Mitsubishi MELSEC L Series User Manual
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Mitsubishi MELSEC L Series User Manual

Mitsubishi MELSEC L Series User Manual

Temperature control module
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Summary of Contents for Mitsubishi MELSEC L Series

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS (Read these precautions before using this product.) Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly. The precautions given in this manual are concerned with this product only. For the safety precautions of the programmable controller system, refer to the user's manual for the CPU module used.
  • Page 4 Do not remove the film during wiring. Remove it for heat dissipation before system operation. ● Mitsubishi programmable controllers must be installed in control panels. Connect the main power supply to the power supply module in the control panel through a relay terminal block. Wiring and replacement of a power supply module must be performed by qualified maintenance personnel with knowledge of protection against electric shock.
  • Page 5 [Startup and Maintenance Precautions] WARNING ● Do not touch any terminal while power is on. Doing so will cause electric shock or malfunction. ● Shut off the external power supply (all phases) used in the system before cleaning the module or retightening the terminal block screw.

  • Page 6: Conditions Of Use For The Product

    PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific applications agreed to by Mitsubishi and provided further that no special quality assurance or fail-safe, redundant or other safety features which exceed the general specifications of the PRODUCTs are required.

  • Page 7: Introduction

    INTRODUCTION Thank you for purchasing the Mitsubishi MELSEC-L series programmable controllers. This manual describes the operating procedures, system configuration, parameter settings, functions, programming, and troubleshooting of the L series temperature control module L60TCTT4/L60TCTT4BW/L60TCRT4/L60TCRT4BW (hereafter abbreviated as L60TC4). Before using this product, please read this manual and the relevant manuals carefully and develop familiarity with the functions and performance of the MELSEC-L series programmable controller to handle the product correctly.

  • Page 8: Compliance With Emc And Low Voltage Directives

    DIRECTIVES (1) Method of ensuring compliance To ensure that Mitsubishi programmable controllers maintain EMC and Low Voltage Directives when incorporated into other machinery or equipment, certain measures may be necessary. Please refer to the manual included with the CPU module or head module. The CE mark on the side of the programmable controller indicates compliance with EMC and Low Voltage Directives.

  • Page 9: Relevant Manuals

    RELEVANT MANUALS (1) CPU module user's manual Manual name Description <manual number (model code)> MELSEC-L CPU Module User's Manual Specifications of the CPU modules, power supply modules, display unit, SD (Hardware Design, Maintenance and Inspection) memory cards, and batteries, information on how to establish a system, <SH-080890ENG, 13JZ36>...

  • Page 10: Table Of Contents

    CONTENTS CONTENTS SAFETY PRECAUTIONS ............. 1 CONDITIONS OF USE FOR THE PRODUCT .
  • Page 11 External wiring ............. 6.4.1 L60TCTT4 .
  • Page 12 8.2.25 Output off-time current error detection function ........Common Functions.
  • Page 13 11.5 Troubleshooting by Symptom ..........11.5.1 When the temperature process value (PV) is abnormal .

  • Page 14: Manual Page Organization

    MANUAL PAGE ORGANIZATION In this manual, pages are organized and the symbols are used as shown below. The following illustration is for explanation purpose only, and should not be referred to as an actual documentation. "" is used for screen names and items. The chapter of the current page is shown.
  • Page 15 Pages describing buffer memory areas and functions are organized as shown below. The following illustration is for explanation purpose only, and should not be referred to as an actual documentation. These icons indicate modes that can be used. Icon Meaning Common to all modes This icon means that the buffer memory area or function can be used in both temperature control mode and temperature input mode.

  • Page 16: Terms

    TERMS Unless otherwise specified, this manual uses the following terms. Term Description L60TCTT4 The abbreviation for the L60TCTT4 temperature control module The abbreviation for the L60TCTT4BW temperature control module with the L60TCTT4BW disconnection detection function L60TCRT4 The abbreviation for the L60TCRT4 temperature control module The abbreviation for the L60TCRT4BW temperature control module with the L60TCRT4BW disconnection detection function...

  • Page 17: Packing List

    PACKING LIST The following items are included in the package of this product. Before use, check that all the items are included. L60TCTT4, L60TCRT4 L60TCTT4, L60TCRT4 Before Using the Product L60TCTT4BW, L60TCRT4BW L60TCTT4BW, L60TCRT4BW Before Using the Product...

  • Page 18: Chapter 1 What Can Be Done With A Temperature Control Module

    CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE The L60TC4 performs PID operation to reach the target temperature based on input from an external temperature sensor. The module controls temperature by outputting the operation result to a heater or others in transistor output. -based modules which possess an additional L60TCTT4BW L60TCRT4BW...
  • Page 19 CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE Heating-cooling control (heating and cooling) Heating and cooling are processed when the target temperature is lower than the ambient temperature or when the temperature of the target subject is easy to change. Input from temperature sensor L60TC4 Cooling...

  • Page 20: Features

    Features This section describes the L60TC4 features. For functions not described here, refer to the list of functions. ( Page 39, Section 3.3) (1) Optimum temperature adjustment control (PID control) • The L60TC4 performs temperature adjustment control automatically when the user simply sets PID constants necessary for PID operation: proportional band (P), integral time (I), derivative time (D), and temperature set value (SV).
  • Page 21 CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE (4) Simultaneous temperature rise of multiple loops Temperatures of multiple loops can be adjusted to simultaneously reach the set value of each; temperatures are controlled evenly without any partial heat exaggeration. Temperature process value (PV) Matches temperature rise...

  • Page 22: Rfb Limiter Function

    (6) RFB limiter function The RFB (Reset feed back) limiter suppresses overshoot which is liable to occur at a startup or when a temperature process value (PV) is increased. (7) Correction of temperature process value (PV) The difference between the temperature process value (PV) and actual temperature can be corrected easily using the following functions.

  • Page 23: The Pid Control System

    CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE The PID Control System This section explains the PID control of the L60TC4. (1) PID control system The following figure shows a system of when performing the PID control. L60TC4 Set value (SV)
  • Page 24 (3) PID control (simple two-degree-of-freedom) The L60TC4 operates in "simple two-degree-of-freedom". In this form of PID control, parameters are simplified compared to the two-degree-of-freedom PID control. In the simple two-degree-of-freedom, the module controls the target subject using not only PID constants but also the control response parameter.

  • Page 25: About The Pid Operation

    CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE About the PID Operation The L60TC4 can perform PID control in process-value incomplete derivation. 1.4.1 Operation method and formula The PID control in process-value incomplete derivation is an operation method which puts a primary delay filter on input from a derivative action and eliminate high-frequency noise component in order to perform a PID operation on the deviation (E).

  • Page 26: The L60Tc4 Actions

    1.4.2 The L60TC4 actions The L60TC4 performs PID operations in forward actions and reverse actions. (1) Forward action In a forward action, the manipulated value (MV) is increased when the temperature process value (PV) increases from the set value (SV). A forward action is used for cooling control.

  • Page 27: Proportional Action (P-Action)

    CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE 1.4.3 Proportional action (P-action) A proportional action is an action to obtain the manipulated value (MV) proportional to the deviation (difference between the set value (SV) and the process value (PV)). (1) Proportional gain In a proportional action, the relationship between changes in the deviation (E) and the manipulated value can be expressed in the following formula:...

  • Page 28: Integral Action (I-Action)

    1.4.4 Integral action (I-action) An integral action is an action which continuously changes the manipulated value (MV) to eliminate the deviation (E) when there is any. The offset caused by a proportional action can be eliminated. In an integral action, the time from a deviation occurrence until when the manipulated value (MV) of the integral action becomes equals to that of the proportional action is called integral time, and is indicated as T The following table describes the difference of actions depending on the value of T , integral time.

  • Page 29: Derivative Action (D-Action)

    CHAPTER 1 WHAT CAN BE DONE WITH A TEMPERATURE CONTROL MODULE 1.4.5 Derivative action (D-action) A derivative action adds the manipulated value (MV) proportional to the rate of change to eliminate the deviation (E) when it occurs. A derivative action can prevent the control target from changing significantly due to disturbance. In an integral action, the time from a deviation occurrence until when the manipulated value (MV) of the derivative action becomes equals to that of the proportional action is called derivative time, and is indicated as T The following table describes the difference of actions depending on the value of T...

  • Page 30: Pid Action

    1.4.6 PID action A PID action performs control using the manipulated value (MV) calculated by merging the proportional action, integral action, and derivative action. The following figure shows a PID action of step responses where the deviation (E) is a fixed value. Deviation Time PID action...

  • Page 31: Chapter 2 Part Names

    CHAPTER 2 PART NAMES CHAPTER 2 PART NAMES The following table shows part names of the L60TC4. L60TCTT4, L60TCRT4 L60TCTT4BW, L60TCRT4BW Number Name Description Module joint levers Levers for connecting modules RUN LED Indicates the operating status of the L60TC4. Operating normally •...
  • Page 32 Number Name Description Used for temperature sensor input and transistor output. Terminal block for I/O Page 85, Section 6.2) Terminal block for CT Used for current sensor (CT) input. Cold junction temperature Used when cold junction temperature compensation is executed for the L60TCTT4 and compensation resistor L60TCTT4BW.

  • Page 33: Chapter 3 Specifications

    CHAPTER 3 SPECIFICATIONS CHAPTER 3 SPECIFICATIONS This chapter describes general specifications, performance specifications, the function list, the I/O signal list, and the buffer memory list. General Specifications For the general specifications of the L60TC4, refer to the following manual. "Safety Guidelines", the manual supplied with a CPU module or head module...

  • Page 34: Performance Specifications

    Performance Specifications The following table lists the performance specifications of the L60TC4. Specifications Item L60TCTT4 L60TCRT4 L60TCTT4BW L60TCRT4BW Control output Transistor output Number of temperature input points 4 channels/module Type of usable temperature sensors, the temperature measurement range, the resolution, and the effect from Page 36, Section 3.2.2 wiring resistance of 1Ω...
  • Page 35 CHAPTER 3 SPECIFICATIONS Specifications Item L60TCTT4 L60TCRT4 L60TCTT4BW L60TCRT4BW Between input terminal and programmable controller power supply: 500VAC for Dielectric withstand voltage 1 minute Between input channels: 500VAC for 1 minute Between input terminal and programmable controller power supply: 500VDC Insulation resistance 20MΩ...

  • Page 36: Number Of Parameters To Be Set

    3.2.1 Number of parameters to be set The total number of the parameters of the initial setting and of the auto refresh setting of the L60TC4 must be within the number of parameters which can be set in the CPU module including the number of other intelligent function module parameters.
  • Page 37 CHAPTER 3 SPECIFICATIONS Description Total number of the parameters of the auto refresh setting that is checked on the window Maximum number of parameters of the auto refresh setting...

  • Page 38: Type Of Usable Temperature Sensors, Temperature Measurement Range, Resolution, And Effect From Wiring Resistance Of 1 Ohm

    3.2.2 Type of usable temperature sensors, temperature measurement range, resolution, and effect from wiring resistance of 1 ohm This section describes the types of temperature sensors that can be used with the L60TC4, the temperature measurement range, the resolution, and the effect from wiring resistance of 1Ω. Set the used temperature sensor in the following buffer memory area.
  • Page 39 CHAPTER 3 SPECIFICATIONS °C Thermocouple Effect from wiring Temperature Effect from wiring Temperature type resistance of 1Ω measurement Resolution resistance of 1Ω measurement Resolution range (°C/Ω)*1 range /Ω) 0 to 400 0 to 800 0.006 0 to 900 0 to 1600 0.003 0.0 to 400.0 ⎯...

  • Page 40: Sampling Cycle And Control Output Cycle

    3.2.3 Sampling cycle and control output cycle This section describes the sampling cycle and control output cycle of the L60TC4. (1) Sampling cycle The L60TC4 performs PID operations in the order of CH1, CH2, CH3, CH4, CH1, CH2 ..The time from when PID operation is started on the current channel (CHn) until PID operation is restarted on the current channel (CHn) is called a sampling cycle.

  • Page 41: Function List

    CHAPTER 3 SPECIFICATIONS Function List This section lists the L60TC4 functions. (1) When the L60TC4 is used as a temperature input module Item Description Reference Conversion enable/disable Whether to enable or disable the temperature conversion can be set for each Page 117, Section 8.1.1 function channel.
  • Page 42 Enable or disable Heating- Item Description Reference Standard cooling control control Derivative action Dynamic performance can be improved by selecting the suitable Page 154, selection function derivative action for the fixed value action and the ramp action. Section 8.2.9 Change rate setting of the set value (SV) per set time unit when Setting change rate Page 155, this value is changed.

  • Page 43: Common Functions

    CHAPTER 3 SPECIFICATIONS (3) Common functions Item Description Reference Temperature process value The temperature process value (PV) can be converted to the set width and this Page 221, Section 8.3.1 (PV) scaling function value can be imported into the buffer memory. If a difference between a temperature process value (PV) and an actual temperature occurs due to the measurement status, the error can be corrected.

  • Page 44: I/O Signal List

    I/O Signal List This section describes the assignment and applications of the L60TC4 input signals. (1) Input signal list Input signal (signal direction: CPU module ← L60TC4) Device Temperature input Standard control Heating-cooling control Mix control mode Module READY flag Module READY flag Module READY flag Module READY flag...

  • Page 45: Output Signal List

    CHAPTER 3 SPECIFICATIONS (2) Output signal list Output signal (signal direction: CPU module → L60TC4) Device Temperature input Standard control Heating-cooling control Mix control mode Setting/operation mode Setting/operation mode Setting/operation mode Setting/operation mode status instruction instruction instruction Error reset instruction Error reset instruction Error reset instruction Error reset instruction...

  • Page 46: Buffer Memory List

    Buffer Memory List This section lists the L60TC4 buffer memory areas. For details on the buffer memory, refer to Page 334, Appendix 2. Do not write data in the system area or the write-protect area in a program in the buffer memory. Doing so may cause malfunction.
  • Page 47 CHAPTER 3 SPECIFICATIONS (a) In the temperature input mode : Enable, ×: Disable Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel Temperature input mode value setting (hexadecimal)) availability Page 334, Appendix 2 All CHs Error code ×...
  • Page 48 Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel value setting Temperature input mode (hexadecimal)) availability Page 363, Appendix 2 77(4D Sensor correction value setting × (21) 78(4E System area ⎯ ⎯ ⎯ ⎯ ⎯ 79(4F ⎯...
  • Page 49 CHAPTER 3 SPECIFICATIONS Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel Temperature input mode value setting (hexadecimal)) availability 0(TT) Process alarm lower lower −2000(RT) 197(C5 limit value 0(TT) Process alarm lower upper −2000(RT) 198(C6 limit value Page 388, Appendix 2 (54) 1300(TT)
  • Page 50 Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel value setting Temperature input mode (hexadecimal)) availability 0(TT) Process alarm lower lower −2000(RT) 229(E5 limit value 0(TT) Process alarm lower upper −2000(RT) 230(E6 limit value Page 388, Appendix 2 (54) 1300(TT) Process alarm upper lower...
  • Page 51 CHAPTER 3 SPECIFICATIONS Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel Temperature input mode value setting (hexadecimal)) availability 2-point sensor compensation Page 395, Appendix 2 gain value (compensation 547(223 (66) value) 2-point sensor compensation Page 396, Appendix 2 548(224 ×...

  • Page 52: Setting Contents

    Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel value setting Temperature input mode (hexadecimal)) availability 616(268 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ System area 639(27F 2-point sensor compensation Page 394, Appendix 2 offset value (measured 640(280 (63) value)
  • Page 53 CHAPTER 3 SPECIFICATIONS Setting contents Non-volatile Address Default Automatic Target Read/Write memory write (decimal Reference channel Temperature input mode value setting (hexadecimal)) availability 745(2E9 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ System area 756(2F4 Process value (PV) scaling Page 405, Appendix 2 757(2F5 ×...
  • Page 54 This default value is set after the module is turned off and on or after the CPU module is reset and the reset is cancelled. This column indicates whether data can be read from or written to the buffer memory area through sequence programs. R: Reading enabled W: Writing enabled This column indicates whether the setting in the buffer memory area is automatically changed when the input range is...
  • Page 55 CHAPTER 3 SPECIFICATIONS (b) In the temperature control mode : Enable, ×: Disable Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor control availability (CT) Page 334,...
  • Page 56 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Heating Heating Transistor 21(15 transistor transistor output flag output flag output flag Heating Heating Transistor...
  • Page 57 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Heating upper Heating upper Upper limit 42(2A limit output limit output 1000 ×...
  • Page 58 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Loop Page 375, disconnection 60(3C System area System area Appendix 2 detection dead (34) band...
  • Page 59 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Heating control Heating control Page 364, Control output output cycle 79(4F output cycle...
  • Page 60 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Automatic Automatic Automatic backup setting backup setting Page 378, backup setting 95(5F after auto after auto...
  • Page 61 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Control Control Control Page 366, response 113(71 response response ×...
  • Page 62 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Page 353, Stop mode Stop mode Stop mode 129(81 × Appendix 2 setting setting setting...
  • Page 63 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Page 369, Setting change rate limiter/Setting change rate 148(94 ×...
  • Page 64 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Page 380, 167(A7 All CHs Temperature rise completion range setting × Appendix 2 (41) Page 381,...
  • Page 65 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) 184(B8 Auto tuning mode selection × Auto tuning Auto tuning Auto tuning 185(B9...
  • Page 66 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Alert 1 mode Alert 1 mode Alert 1 mode 240(F0 × *6*9 setting setting...
  • Page 67 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) 288(120 CT ratio setting 289(121 CT ratio setting 290(122 CT ratio setting Page 393,...
  • Page 68 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Page 400, 575(23F Self-tuning flag System area System area × × Appendix 2 (73) Page 394,...
  • Page 69 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Page 395, 2-point sensor compensation gain value 611(263 Appendix 2 (compensation value) (66)
  • Page 70 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Page 397, 646(286 × × Appendix 2 2-point sensor compensation gain latch request (69) Page 397, 647(287...
  • Page 71 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Temperature conversion 695(2B7 System area System area × setting Temperature Page 403,...
  • Page 72 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Cooling Cooling 712(2C8 System area transistor transistor × × output flag output flag Cooling Cooling...
  • Page 73 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Simultaneous Page 408, 732(2DC temperature rise System area System area Appendix 2 dead time...
  • Page 74 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor control availability (CT) Simultaneous Page 408, 748(2EC temperature rise System area System area Appendix 2 dead time (86) Simultaneous...
  • Page 75 CHAPTER 3 SPECIFICATIONS Target Setting contents Non- channel volatile Default Read/ Automatic Address Heating- memory value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor availability control (CT) Simultaneous Simultaneous Page 408, temperature 763(2FB temperature rise System area Appendix 2 rise gradient...
  • Page 76 Target Setting contents Non- channel volatile Default Read/ Automatic Address memory Heating- value Write setting (decimal Reference Standard current write cooling Mix control (hexadecimal)) control sensor control availability (CT) Simultaneous Simultaneous Page 407, temperature temperature rise 778(30A System area × Appendix 2 rise group (84)
  • Page 77 CHAPTER 3 SPECIFICATIONS This default value is set after the module is turned off and on or after the CPU module is reset and the reset is cancelled. This column indicates whether data can be read from or written to the buffer memory area through sequence programs. R: Reading enabled W: Writing enabled This column indicates whether the setting in the buffer memory area is automatically changed when the input range is...
  • Page 78 (2) Buffer memory address for error history Non- volatile Read/ Automatic Address Default memory Target Write setting (decimal Setting contents Reference write channel value (hexadecimal)) availability Page 415, 1279(4FF All CHs Latest address of error history × × Appendix 2 (95) 1280(500 Error code...
  • Page 79 CHAPTER 3 SPECIFICATIONS Non- volatile Read/ Automatic Address Default memory Target Write setting (decimal Setting contents Reference write channel value (hexadecimal)) availability 1325(52D ⎯ System area ⎯ ⎯ ⎯ ⎯ ⎯ 1327(52F 1328(530 Page 415, Error code, error occurrence time (Data All CHs History 7 ×...
  • Page 80 Non- volatile Read/ Automatic Address Default memory Target Write setting (decimal Setting contents Reference write channel value (hexadecimal)) availability 1381(565 ⎯ System area ⎯ ⎯ ⎯ ⎯ ⎯ 1383(567 1384(568 Page 415, History Error code, error occurrence time (Data All CHs ×...

  • Page 81: Chapter 4 Procedure Before Operation

    CHAPTER 4 PROCEDURE BEFORE OPERATION CHAPTER 4 PROCEDURE BEFORE OPERATION This chapter describes the procedure before operating the L60TC4. Using the module as a temperature input module Using the module as a temperature control module Start Start Module mounting Module mounting Connect the L60TC4 in an arbitrary configuration.
  • Page 82 Memo...

  • Page 83: Chapter 5 System Configuration

    CHAPTER 5 SYSTEM CONFIGURATION CHAPTER 5 SYSTEM CONFIGURATION This chapter describes the total configuration of the L60TC4, number of connectable modules, and applicable software version. Total Configuration This section describes examples of system configurations when using the L60TC4. (1) Connecting to a CPU module Display unit (optional) I/O module or...

  • Page 84: Applicable Systems

    Applicable Systems (1) Number of connectable modules A CPU module and a head module recognize one L60TCTT4BW or L60TCRT4BW as two modules. Therefore, number of connectable modules reduces to half of other modules. For the number of connectable modules, refer to the following manuals. MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) MELSEC-L CC-Link IE Field Network Head Module User's Manual (2) Applicable software version...

  • Page 85: Precautions For System Configuration

    CHAPTER 5 SYSTEM CONFIGURATION Precautions for System Configuration The L60TC4 measures temperature based on the temperature of the terminal block. Therefore, depending on the system configuration, temperature distribution of the terminal block can be uneven due to the effect of heat generated from modules, and the measured temperature may differ from actual temperature (especially when two or more L60TC4 modules are connected next to each other or the L60TC4 is mounted next to the power supply module or CPU module).

  • Page 86: Chapter 6 Installation And Wiring

    CHAPTER 6 INSTALLATION AND WIRING This chapter describes the installation and wiring of the L60TC4. Installation Environment and Installation Position For precautions for installation environment and installation position, refer to the following. MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) MELSEC-L CC-Link IE Field Network Head Module User's Manual...

  • Page 87: Terminal Block

    CHAPTER 6 INSTALLATION AND WIRING Terminal Block (1) Precautions Tighten the terminal block screws within the following specified torque range. Undertightening screws may cause module dropping, failures, or malfunction. Overtightening screws can damage the screw and/or module, resulting in module dropping, short-circuit, or malfunction. Screw location Tightening torque range Terminal screw (M3 screw)
  • Page 88 (2) Signal names of terminal blocks The following shows signal names of terminal blocks. (a) L60TCTT4, L60TCTT4BW (terminal block for I/O) Temperature input Standard control Terminal Indication number Symbol Name Symbol Name ⎯ OUT1 Unused CH1 Output OUT2 ⎯ Unused CH2 Output ⎯...
  • Page 89 CHAPTER 6 INSTALLATION AND WIRING Heating-cooling control Heating-cooling control Mix control Mix control Terminal (normal mode) (expanded mode) (normal mode) (expanded mode) Indication number Symbol Name Symbol Name Symbol Name Symbol Name CH1 Heating CH1 Heating CH1 Heating CH1 Heating OUT1 output output...
  • Page 90 (b) L60TCRT4, L60TCRT4BW (terminal block for I/O) Temperature input Standard control Terminal Indication number Symbol Name Symbol Name ⎯ OUT1 Unused CH1 Output ⎯ OUT2 Unused CH2 Output OUT3 ⎯ Unused CH3 Output ⎯ OUT4 Unused CH4 Output ⎯ Unused COM- Output common Unused...
  • Page 91 CHAPTER 6 INSTALLATION AND WIRING Heating-cooling control Heating-cooling control Mix control Mix control Terminal (normal mode) (expanded mode) (normal mode) (expanded mode) Indication number Symbol Name Symbol Name Symbol Name Symbol Name CH1 Heating CH1 Heating CH1 Heating CH1 Heating OUT1 output output...
  • Page 92 (c) L60TCTT4BW (terminal block for CT), L60TCRT4BW (terminal block for CT) Standard control Terminal Indication number Symbol Name Unused CT input 1 CT input 1 CT input 2 CT input 2 CT input 3 CT input 3 CT input 4 CT input 4 CT input 5 CT input 5...
  • Page 93 CHAPTER 6 INSTALLATION AND WIRING (3) Removal and installation of the terminal block The following shows how to remove and install the terminal block. (a) Removal procedure Open the terminal cover and loosen the terminal block mounting screw. Terminal block mounting screw Using the terminal block fixing hole as a supporting point, remove the terminal block.

  • Page 94: Wiring Precautions

    Wiring precautions External wiring that is less susceptible to noise is required as a condition of enabling a highly reliable system and making full use of the capabilities of the L60TC4. The following figure shows the wiring precautions. • Use separate cables with the AC control circuit and the L60TC4's external input signals to avoid the influence of AC side surges and induction.

  • Page 95: External Wiring

    CHAPTER 6 INSTALLATION AND WIRING External wiring The following figure shows the external wiring. 6.4.1 L60TCTT4 (1) In the temperature input mode L60TCTT4 Internal circuit Unused Internal circuit COM- Object to be temperature-measured CH1+ Filter CH1- Internal CH2+ Filter circuit CH2- CH4+ Filter...
  • Page 96 (2) In the temperature control mode (a) In the standard control L60TCTT4 Internal circuit Internal circuit COM- 24VDC CH1+ Filter CH1- Object to be controlled Internal CH2+ Filter circuit CH2- CH4+ Filter CH4- Use the shielded compensation lead wire. Use the shielded cable. Use the compensation lead wire for the cable of thermocouple.
  • Page 97 CHAPTER 6 INSTALLATION AND WIRING (b) In the heating-cooling control L60TCTT4 Internal circuit Internal circuit Internal circuit Internal circuit COM- 24VDC Heating Cooling Object to be controlled CH1+ Filter CH1- Internal circuit CH2+ Filter CH2- Use the shielded compensation lead wire. Use the shielded cable.

  • Page 98: L60Tctt4Bw

    6.4.2 L60TCTT4BW (1) In the temperature input mode L60TCTT4BW Internal circuit Unused Internal circuit COM- CH1+ Filter CH1- Controlled object CH2+ Internal Filter CH2- circuit CH4+ Filter CH4- Connector Connector CT input circuit Unused Use the shielded compensation lead wire. Use the compensation lead wire for the cable of thermocouple.
  • Page 99 CHAPTER 6 INSTALLATION AND WIRING (2) In the temperature control mode (a) In the standard control L60TCTT4BW Internal circuit Internal circuit COM- Current sensor 24VDC (CT) CH1+ Filter CH1- Object to be controlled CH2+ Internal Filter CH2- circuit CH4+ Filter CH4- Connector Connector...
  • Page 100 (b) In the heating-cooling control L60TCTT4BW Internal circuit Internal circuit Internal circuit Internal circuit Current sensor COM- (CT) Cooling 24VDC CH1+ Filter CH1- Heating Object to be Internal controlled circuit CH2+ Filter CH2- Connector Connector CT input circuit Use the shielded compensation lead wire. Use the shielded cable.

  • Page 101: L60Tcrt4

    CHAPTER 6 INSTALLATION AND WIRING 6.4.3 L60TCRT4 (1) In the temperature input mode L60TCRT4 Internal circuit Unused Internal circuit COM- Object to be temperature-measured CH1 A Filter CH1 B CH1 b CH2 A Internal Filter CH2 B circuit CH2 b CH4 A Filter CH4 B...
  • Page 102 (2) In the temperature control mode (a) In the standard control L60TCRT4 Internal circuit Internal circuit COM- 24VDC CH1 A Filter CH1 B CH1 b Object to be controlled Internal CH2 A Filter CH2 B circuit CH2 b CH4 A Filter CH4 B CH4 b...
  • Page 103 CHAPTER 6 INSTALLATION AND WIRING (b) In the heating-cooling control L60TCRT4 Internal circuit Internal circuit Internal circuit Internal circuit COM- 24VDC Heating Cooling CH1 A Filter CH1 B CH1 b Internal Object to be circuit controlled CH2 A Filter CH2 B CH2 b Use the shielded cable.

  • Page 104: L60Tcrt4Bw

    6.4.4 L60TCRT4BW (1) In the temperature input mode L60TCRT4BW Internal circuit Unused Internal circuit COM- CH1 A Filter CH1 B CH1 b Controlled object Internal CH2 A Filter CH2 B circuit CH2 b CH4 A Filter CH4 B CH4 b Connector Connector Unused...
  • Page 105 CHAPTER 6 INSTALLATION AND WIRING (2) In the temperature control mode (a) In the standard control L60TCRT4BW Internal circuit Internal circuit COM- Current sensor (CT) 24VDC CH1 A Filter CH1 B CH1 b Object to be controlled Internal CH2 A Filter CH2 B circuit...
  • Page 106 (b) In the heating-cooling control L60TCRT4BW Internal circuit Internal circuit Internal circuit Internal circuit COM- Current sensor 24VDC Cooling (CT) CH1 A Filter CH1 B Heating CH1 b Internal Object to be circuit controlled CH2 A Filter CH2 B CH2 b Connector Connector CT input circuit...

  • Page 107: Heater Disconnection Detection Wiring And Setting Example For Three-Phase Heater

    CHAPTER 6 INSTALLATION AND WIRING Heater disconnection detection wiring and setting example for three-phase heater The following figure shows a wiring and setting example to detect a three-phase heater disconnection by using the heater disconnection detection function. L60TCTT4BW L60TCRT4BW COM- Object to be controlled To three-phase heater (used in CH2 loop)

  • Page 108: Unused Channel Setting

    Unused Channel Setting When no temperature sensor is connected to a channel, the L60TC4 performs upscale processing for the channel. Therefore, when a temperature sensor is not connected to a channel where no temperature control is performed, the module determines that the temperature process value (PV) has exceeded the temperature measurement range for the input range, and the ALM LED blinks.

  • Page 109: Chapter 7 Various Settings

    CHAPTER 7 VARIOUS SETTINGS CHAPTER 7 VARIOUS SETTINGS This chapter describes the setting procedures of the L60TC4. After writing the contents of the new module, switch setting, parameter setting and auto refresh setting into the CPU module, reset the CPU module, switch STOP → RUN → STOP → RUN, or turn off and on the power, to enable the setting contents. Addition of Modules Add the model name of the L60TC4 to use on the project.

  • Page 110: Switch Setting

    Switch Setting Configure settings such as the output setting at CPU stop error and the control mode selection which are used in each channel. (1) Setting method Open the "Switch Setting" window. Project window [Intelligent Function Module] Module name [Switch Setting] (a) When using the L60TC4 as a temperature input module Select "Temperature Input Mode".
  • Page 111 CHAPTER 7 VARIOUS SETTINGS (b) When using the L60TC4 as a temperature control module Select "Temperature Control Mode". Item Description Set value Reference Set whether to hold or clear the transistor output status Output Setting at • 0: CLEAR (default value) Page 128, when a CPU stop error occurs or when a CPU module is CPU Stop Error...

  • Page 112: Parameter Setting

    Parameter Setting Set the parameter for each channel. By setting parameters here, the parameter setting is not required on a program. (1) Setting method Open the "Parameter" window. Start up "Parameter" on the Project window. Project window [Intelligent Function Module] Module name [Parameter] Clear Value for...
  • Page 113 CHAPTER 7 VARIOUS SETTINGS Operation Setting item Reference mode Input range Page 345, Appendix 2 (12) Conversion enable/disable setting Page 402, Appendix 2 (75) Sensor correction value setting Page 363, Appendix 2 (21) Primary delay digital filter setting Page 365, Appendix 2 (24) Process value (PV) scaling function enable/disable setting Page 405, Appendix 2 (80) Process value (PV) scaling lower limit value...

  • Page 114: Operation Mode

    Operation Setting item Reference mode Input range Page 345, Appendix 2 (12) Set value (SV) setting Page 354, Appendix 2 (14) Unused channel setting Page 376, Appendix 2 (35) Proportional band (P) setting/Heating control proportional band setting (Ph) Page 355, Appendix 2 (15) Cooling proportional band (Pc) setting Integral time (I) setting Page 357, Appendix 2 (16)
  • Page 115 CHAPTER 7 VARIOUS SETTINGS Operation Setting item Reference mode Simultaneous temperature rise group setting Page 407, Appendix 2 (84) Simultaneous temperature rise AT mode selection Page 409, Appendix 2 (87) Setting change rate limiter Unit time setting Page 411, Appendix 2 (89) Peak current suppression control group setting Page 412, Appendix 2 (90) Automatic backup setting after auto tuning of PID constants...

  • Page 116: Auto Refresh

    Auto Refresh Buffer memory data can be transferred to specified devices using this function. By using this auto refresh setting, reading or writing is not required on a program. (1) Setting method Open the "Auto_Refresh" window. Start "Auto_Refresh" on the Project window. Project window [Intelligent Function Module] Module name...

  • Page 117: Chapter 8 Functions

    CHAPTER 8 FUNCTIONS CHAPTER 8 FUNCTIONS This chapter explains the details of the L60TC4 functions and how to set each function. For details on I/O signals and the buffer memory, refer to the following: • Details of I/O signals ( Page 323, Appendix 1) •...

  • Page 118: Temperature Input Mode

    Temperature Input Mode The L60TC4 can be used as a temperature input module using this function. Input from temperature sensor L60TC4 (1) Setting method Set the L60TC4 to the temperature input mode on Switch Setting. ( Page 108, Section 7.2) Project window [Intelligent Function Module] Module name...

  • Page 119: Conversion Enable/Disable Function

    CHAPTER 8 FUNCTIONS 8.1.1 Conversion enable/disable function Temperature Input Temperature conversion can be enabled or disabled for each channel using this function. By disabling unused channels, unnecessary disconnection detection or alert output can be prevented. (1) Setting method Set "Conversion enable/disable setting " to "0: Enable". Project window [Intelligent Function Module] Module name...

  • Page 120: Primary Delay Digital Filter

    (2) Primary delay digital filter The primary delay digital filter smoothens extreme noise before outputting the temperature process value (PV). Temperature process value (PV) When the primary delay digital filter is not set Time Temperature process value (PV) When the primary delay digital filter is set Time For the primary delay digital filter, set the time until the temperature process value (PV) changes by 63.3% (time...
  • Page 121 CHAPTER 8 FUNCTIONS (a) How to set the primary digital filter In "Primary delay digital filter setting", set the time until the temperature process value (PV) changes by 63.3% (time constant). Project window [Intelligent Function Module] Module name [Parameter] When 3(3s) is set in "Primary delay digital filter setting" The change shown below will happen if the Temperature process value (PV) changes from 250°C to 260°C under the condition where 3(3s) is set in "Primary delay digital filter setting".

  • Page 122: Alert Output Function

    8.1.3 Alert output function Temperature Input An alert can be output when the temperature process value (PV) meets the condition set in advance using this function. Use this function to activate danger signals of devices or safety devices. There are two types of alert: process alarm and rate alarm. (1) Process alarm An alert occurs when the temperature process value (PV) reaches the process alarm upper upper limit value or more, or the process alarm lower lower limit value or less.
  • Page 123 CHAPTER 8 FUNCTIONS (c) How to set process alarm Set "Process alarm alert output enable/disable setting" to "0: Enable". Then, set the lower lower limit value, lower upper limit value, upper lower limit value, and upper upper limit value of the process alarm. Project window [Intelligent Function Module] Module name...

  • Page 124: Rate Alarm

    (2) Rate alarm The temperature process value (PV) is monitored every rate alarm alert detection cycle. An alert occurs when the change from the previous monitoring is greater than the rate alarm upper limit value, or smaller than the rate alarm lower limit value.
  • Page 125 CHAPTER 8 FUNCTIONS Temperature Rate alarm process warning value (PV) detection Temperature period process value (PV) Rate alarm Time warning detection Change of period temperature process value (PV) ( C) Rate alarm upper limit Change of value temperature process value (PV) Rate alarm lower limit value...
  • Page 126 A setting example of the rate alarm upper limit value and lower limit value to monitor that the temperature process value (PV) is rising within the specified range Change of temperature process value Rate alarm upper limit value (PV) ( C) 20.0 10.0 Rate alarm lower limit value...

  • Page 127: Temperature Control Mode

    CHAPTER 8 FUNCTIONS Temperature Control Mode The L60TC4 can be used as a temperature control module using this function. • Standard control (heating) Input from temperature sensor L60TC4 Control output (heating) Heater • Heating-cooling control (heating and cooling) Input from temperature sensor L60TC4 Cooling equipment...

  • Page 128: Control Mode Selection Function

    8.2.1 Control Mode Selection Function Heating-cooling Standard A control mode can be selected using this function. This section explains selectable control modes of the L60TC4. (1) Standard control and heating-cooling control There are two types of control modes in the L60TC4: standard control and heating-cooling control. (a) Standard control The control method is either one of heating (reverse action) or cooling (forward action).

  • Page 129: Expanded Mode

    CHAPTER 8 FUNCTIONS (3) Expanded mode In the heating-cooling control (expanded mode) or the mix control (expanded mode), the number of loops for heating-cooling control can be expanded using an output module and others in the system. To use an expanded mode, construct a system such as the one shown below.

  • Page 130: Control Output Setting At Cpu Stop Error

    8.2.2 Control output setting at CPU stop error Heating-cooling Standard When a stop error occurs on the CPU module or when CPU's status is changed from RUN to STOP, whether to hold or clear the status of transistor output can be selected using this function. Configure "Output Setting at CPU Stop Error"...

  • Page 131: Control Method

    CHAPTER 8 FUNCTIONS 8.2.3 Control method Standard Heating-cooling The following control methods can be applied by setting the proportional band (P), integral time, and derivative time(D). • Two-position control ( Page 129, Section 8.2.3 (1)) • P control ( Page 131, Section 8.2.3 (2)) •...

  • Page 132: Output Status

    (b) Heating-cooling control The module operates as follows outside the range of CH Adjustment sensitivity (dead band) setting (Un\G46, Un\G78, Un\G110, Un\G142). Heating transistor Cooling transistor Condition output status output status The temperature process value (PV) is below the lower limit of the adjustment sensitivity (dead band).
  • Page 133 CHAPTER 8 FUNCTIONS (2) P Control P control is a control method in which the manipulated value (MV) is determined proportional to the deviation (E) between the temperature process value (PV) and set value (SV). (a) Standard control The manipulated value is 50% in the following conditions. •...
  • Page 134 (c) Setting method Set each item as follows. • "Proportional band (P) setting/Heating control proportional band setting (Ph)" : any value • "Integral time (I) setting": 0s • "Derivative time (D) setting": 0s Project window [Intelligent Function Module] Module name [Parameter] (3) PI Control PI control is a control method in which integral elements are added to P control, and an offset (remaining...

  • Page 135: Pid Control

    CHAPTER 8 FUNCTIONS (4) PD Control PD control is a control method in which the derivative time (D) is set in addition to PD control. The control mechanism is the same as P control. (a) Setting method Set each item as follows. •...
  • Page 136 (6) Condition to perform PID control The condition to be able to perform PID control depends on the settings of the followings. • Setting/operation mode instruction (Yn1) ( Page 330, Appendix 1.2 (1)) • PID continuation flag (Un\G169)) ( Page 381, Appendix 2 (43)) •...
  • Page 137 CHAPTER 8 FUNCTIONS (7) Buffer memory areas related to control method The following table shows the buffer memory areas related to control method. Buffer memory address Setting range Buffer Two- memory area Reference position name control control control control control Thermocouple: 1 to 4, 11 to 28, 36 to 48, 49 to 52, 100 to Page 345, 117, 130 to 132, 201 to 205...
  • Page 138 Buffer memory address Setting range Buffer Two- memory area Reference position name control control control control control Control output cycle Un\G47 Un\G79 Un\G111 Un\G143 • The control output cycle unit selection setting setting on Switch Setting is 1s: 1 to 100 Heating Page 364, The setting...

  • Page 139: Manual Reset Function

    CHAPTER 8 FUNCTIONS 8.2.4 Manual Reset Function Standard Heating-cooling The position of the stable condition in P control or PD control can be shifted manually using this function. By shifting the proportional band (P), an offset (remaining deviation) is manually reset. The offset is reset by determining and setting the amount to shift the value of the manipulated value (MV) in a stable condition from the reference value.

  • Page 140: Heating-Cooling Control

    (2) Heating-cooling control The set value (SV) is set where the manipulated value for heating (MVh)/manipulated value for cooling (MVc) is 0%. Due to this, as long as the temperature process value (PV) and the set value (SV) is not in equilibrium at 0% of manipulated value for heating (MVh)/manipulated value for cooling (MVc), an offset (remaining deviation) generates.

  • Page 141: Manual Control

    CHAPTER 8 FUNCTIONS 8.2.5 Manual Control Standard Heating-cooling Manual control is a form of control for which the user sets the manipulated value (MV) manually instead of obtaining it automatically by PID control. The manipulated value (MV) is checked every 250ms or 500ms , and is reflected to transistor output.

  • Page 142: Control Output Cycle Unit Selection Function

    8.2.6 Control output cycle unit selection function Heating-cooling Standard The unit of the control output cycle can be selected from 1s or 0.1s using this function. When the control output cycle is set in 0.1s, control can be more attentive. The control output cycle is the ON/OFF cycle of transistor output for the temperature control function.

  • Page 143: Auto Tuning Function

    CHAPTER 8 FUNCTIONS 8.2.7 Auto tuning function Standard Heating-cooling The auto tuning function is designed for the L60TC4 to set the optimum PID constants automatically. In auto tuning, the PID constants are calculated according to the hunting cycle and amplitude generated by repeated overshoot and undershoot of the manipulated value (MV) toward the set value (SV).
  • Page 144 (2) Buffer memory areas related to auto tuning Auto tuning can be executed when the following data are set. Note that other data must be preset to the values used for actual operation since actual control starts on completion of auto tuning. When "0"...
  • Page 145 CHAPTER 8 FUNCTIONS (4) Backup of the calculated value on completion of auto tuning By setting the following buffer memory area to Enable (1) at the start of auto tuning, the calculated value Page 142, Section 8.2.7 (3)) is automatically backed up into a non-volatile memory on completion of auto tuning.
  • Page 146 (5) Procedure of auto tuning (a) GX Works2 Start from "Auto Tuning...". [Tool] [Intelligent Function Module Tool] [Temperature Control Module] [Auto Tuning...] Select the module by which auto tuning is executed, and click ↓ Click the "Auto Tuning Setting" tab. ↓...
  • Page 147 CHAPTER 8 FUNCTIONS (From the previous page) ↓ Configure the auto tuning setting. ↓ Click ↓ Click ↓ (To the next page)
  • Page 148 (From the previous page) ↓ Click ↓ Click ↓ Click the "Auto Tuning Execution" tab. ↓ (To the next page)
  • Page 149 CHAPTER 8 FUNCTIONS (From the previous page) ↓ Click of the channel where auto tuning is to be executed. ↓ Click ↓ Check that "Status" has changed from "Executing" to "Tuned", and click ↓ Click ↓...
  • Page 150 (b) Program The execution procedure of auto tuning is as follows. Start Set buffer memories. L60TC4 data setting Page 142, Section 8.2.7 (2) Switch the setting/operation mode command (Yn1) Operation mode setting from off to on. Confirm that the setting/operation mode status (Xn1) is on. Auto tuning start Switch CH Auto tuning instruction (Yn4 to Yn7) from on to off.
  • Page 151 CHAPTER 8 FUNCTIONS (6) Conditions where auto tuning cannot be executed If one of the following conditions applies, auto tuning cannot be executed. Conditions to start auto tuning Reference The module is in the setting mode (Setting/operation mode status (Xn1): OFF). Page 324, Appendix 1.1 (2) In standard control, CH Proportional band (P) setting (Un\G35, Un\G67, Un\G99, Un\G131) is set...
  • Page 152 (7) Conditions where auto tuning ends in fail The conditions are described below. (a) Shift from the operation mode to the setting mode Shifting from the operation mode to the setting mode (Setting/operation mode instruction (Yn1) is turned off from on) ends auto tuning in fail. Note that an exception is when PID continuation flag (Un\G169) is set to Continue (1).
  • Page 153 CHAPTER 8 FUNCTIONS (e) Calculated values of PID constants after auto tuning If a calculated value of PID constants after auto tuning exceeds one of the following ranges, auto tuning ends in fail. • CH Proportional band (P) setting (Un\G35, Un\G67, Un\G99, Un\G131): 1 to 10000 (0.1% to 1000.0%) •...

  • Page 154: Adjustment After Auto Tuning

    (10)Adjustment after auto tuning To change the control response toward the PID constants calculated by auto tuning, change the setting in the following buffer memory area. • CH Control response parameter (Un\G49, Un\G81, Un\G113, Un\G145) ( Page 366, Appendix 2 (25))

  • Page 155: Simple Two-Degree-Of-Freedom

    CHAPTER 8 FUNCTIONS 8.2.8 Simple Two-degree-of-freedom Standard Heating-cooling This is the simplified control form of the two-degree-of-freedom PID control. In this form of PID control, the L60TC4 controls the target subject using not only PID constants but also the control response parameter. The response speed toward the change of the set value (SV) can be selected from three levels.

  • Page 156: Derivative Action Selection Function

    8.2.9 Derivative Action Selection Function Heating-cooling Standard An derivative action appropriate for each of fixed value action and ramp action can be selected and the action characteristic can be improved using this function. (1) Action Each type of derivative action operates as shown below. Derivative action selection (Un\G729, Action...

  • Page 157: Setting Change Rate Limiter Setting Function

    CHAPTER 8 FUNCTIONS 8.2.10 etting Change Rate Limiter Setting Function Standard Heating-cooling When the set value (SV) is changed, the change rate in the specified time unit can be set on "Setting Change Rate Limiter Setting". The user can select whether to set this rate for temperature rise and temperature drop individually or at once.
  • Page 158 (c) Time unit setting Set the time unit of the setting change rate limiter on "Setting change rate limiter Unit time setting". Project window [Intelligent Function Module] Module name [Parameter] Operation of when individual setting is selected on Switch Setting Setting change rate limiter (temperature rise) (Un\G52, Un\G84, Un\G116, Un\G148) Temperature process...

  • Page 159: Alert Function

    CHAPTER 8 FUNCTIONS 8.2.11 Alert Function Standard Heating-cooling When the process value (PV) or deviation reaches the value set in advance, the system is set in an alert status. Use this function to activate danger signals of devices or safety devices. The alert function is classified into input alerts and deviation alerts depending on the setting of the alert mode.
  • Page 160 (2) Deviation alert With the deviation alert, when the deviation (E) between the temperature process value (PV) and the set value (SV) meets a particular condition, the system is put in an alert status. The set value (SV) to be referred is either "set value (SV) monitor" or "set value (SV) setting" depending on the alert mode.
  • Page 161 CHAPTER 8 FUNCTIONS • When the setting change rate limiter is specified: The value in CH Set value (SV) monitor (Un\G25 to Un\G28) follows the set value (SV) of after the setting is reflected. Temperature process value (PV) Set value (SV) setting (Un\G34, Un\G66, UG98, Un\G130) Set value (SV) monitor Set value (SV) 2...
  • Page 162 (c) Lower limit deviation alert When the deviation (E) is equal to or less than the alert set value, the system is put in an alert status. When the alert set value is positive When the alert set value is negative Temperature process value (PV) Temperature process value (PV) Set value...
  • Page 163 CHAPTER 8 FUNCTIONS (e) Within-range alert When the following condition is satisfied, the system is put in an alert status. • -(Alert set value) ≤ Deviation (E) ≤ Alert set value Temperature process value (PV) Set value (SV) Time Deviation (E) (= Temperature process value (PV) - set value (SV) Alert set value Time - (Alert set value)

  • Page 164: Setting Value

    (f) Setting method (alert mode and the set value (SV) to be referred) Select one of the two types of set value (SV) described in Page 158, Section 8.2.11 (2) by specifying an alert mode. • When the alert judgment requires the value in CH Set value (SV) monitor (Un\G25 to Un\G28), set one of the following values.
  • Page 165 CHAPTER 8 FUNCTIONS (3) Alert with standby Even if the temperature process value (PV) or deviation (E) is in a condition to be in an alert status when the module's status is changed from the setting mode to the operation mode (Setting/operation mode instruction (Yn1): OFF→ON), the alert does not occur.
  • Page 166 (4) Alert with standby (second time) A function to deactivate the alert function once again when the set value (SV) is changed is added to an alert with standby. This is called an alert with standby (second time). When control needs the set value (SV) change, the alert supposed to occur can be avoided when the set value is changed by selecting an alert with standby (second time).
  • Page 167 CHAPTER 8 FUNCTIONS Remark If a setting change rate limiter is specified, an alert with standby (second time) is not active even though one of the following alert modes is selected. Alert mode setting ( Page 167, Section 8.2.11 (7) (a)) Setting value Alert mode name Upper Limit Deviation Alert with Re-Wait...
  • Page 168 (5) Condition for alert judgment Whether alert occurrence is judged or not depends on the settings of the followings: • Setting/operation mode instruction (Yn1) ( Page 330, Appendix 1.2 (1)) • PID continuation flag (Un\G169) ( Page 381, Appendix 2 (43)) •...
  • Page 169 CHAPTER 8 FUNCTIONS (7) Setting alert modes and alert set values Settings of the alert mode and alert set value are described below. (a) Alert mode Set the alert mode. Up to four modes can be set for each channel. Set modes in "Alert 1 mode setting" to "Alert 4 mode setting".
  • Page 170 (8) Setting the alert dead band When the temperature process value (PV) or deviation (E) is close to the alert set value, alert status and non-alert status may alternates repeatedly due to inconsistent input. Such case can be prevented by setting an alert dead band. (a) Setting method Set a value on "Alert dead band setting".
  • Page 171 CHAPTER 8 FUNCTIONS (9) Setting the number of alert delay Set the number of sampling to judge alert occurrence. The system is set in the alert status when the process value (PV) that has reached the alert set value remains in the alert range until the number of sampling becomes equal to or greater than the preset number of alert delays.
  • Page 172 (10)Alert mode and settings The following table shows the alert modes and validity/availability of related settings. , Inactive/No: ⎯) (Active/Yes: Alert dead band Number of alert Alert with Alert with setting delay standby standby (second Alert Page 168, Page 169, Page 163, time) ( Page...

  • Page 173: Rfb Limiter Function

    CHAPTER 8 FUNCTIONS 8.2.12 RFB Limiter Function Standard Heating-cooling The RFB (reset feed back) function operates when deviation (E) continues for a long period of time. In such occasion, this function limits the PID operation result (manipulated value (MV)) from an integral action so that it does not exceed the valid range of the manipulated value (MV).

  • Page 174: Input/Output (With Another Analog Module) Function

    8.2.13 Input/output (with another analog module) function Heating-cooling Standard Input and output can be processed using other analog modules (such as an A/D converter module or D/A converter module) in the system. (1) Input In general, a temperature control module uses the temperature measured through thermocouples or platinum resistance thermometers connected to the module as a temperature process value (PV).
  • Page 175 CHAPTER 8 FUNCTIONS (2) Output Instead of the transistor output from the temperature control module, analog output values from other analog modules (such as a D/A converter module) can be used as the manipulated value (MV). (a) Setting method Follow the procedure below (for the standard control). Select the value on "Resolution of the manipulated value for output with another analog module".

  • Page 176: On Delay Output Function

    8.2.14 ON delay output function Heating-cooling Standard This function allows the user to set the delay (response/scan time delay) of transistor output. By setting a delay, and monitoring the ON delay output flag and external output on the program, disconnection of external output can be judged.

  • Page 177: Self-Tuning Function

    CHAPTER 8 FUNCTIONS 8.2.15 Self-tuning function Standard The L60TC4 constantly monitors the control state. When the control system is oscillatory, this function allows PID constants to be automatically changed under the following situations such as: • After the control has been just started •...
  • Page 178 (2) Starting ST and vibration ST Two types of self-tuning are available depending on the state of the control system: starting ST (self-tuning) and vibration ST. • Starting ST: Self-tuning is performed immediately after the control is started or when the set value (SV) is changed.
  • Page 179 CHAPTER 8 FUNCTIONS (3) Procedure for the self-tuning control The following is the flow chart for the control. Self-tuning start Did the temperature adjustment control start? Or did the set value (SV) change? Auto tuning status (Xn4 to Xn7) turns on. Is the (Starting ST) temperature process value (PV)
  • Page 180 (4) Operation with starting ST This section explains the operation of when the temperature control is started or the set value (SV) is changed (starting ST). With starting ST, the module monitors the response waveform of the temperature process value (PV) of when the temperature control is started or when the set value (SV) is changed.
  • Page 181 CHAPTER 8 FUNCTIONS If the starting ST is started when the temperature process value (PV) is not stable, incorrect PID constants may be determined. Execute the starting ST after the temperature process value (PV) has been stable for two minutes or longer.
  • Page 182 (5) Operation with vibration ST This section explains the operation of when a control response is oscillatory (vibration ST). With vibration ST, PID constants are automatically corrected to settle a vibration when a control response becomes oscillatory due to reasons such as the change in the characteristic of a controlled object and conditions for operation.
  • Page 183 CHAPTER 8 FUNCTIONS (6) Conditions where self-tuning is not executed This section explains the conditions where self-tuning is not executed. (a) The control method is not the PID control method When the control method is one of the methods other than the PID control method (two-position control, P control, PI control, PD control), the following is operated.
  • Page 184 (d) The manipulated value (MV) is not changed from the lower limit output limiter value or upper limit output limiter value when the temperature control is started and the set value (SV) is changed The starting ST does not start. However, self-tuning is enabled at the time of when a control response becomes oscillatory under the following setting.
  • Page 185 CHAPTER 8 FUNCTIONS (8) Conditions where self-tuning does not complete due to errors The following are the conditions where an error occurs in self-tuning. • The setting for the buffer memory areas in the following table was changed during self-tuning. Buffer memory address Buffer memory area name Reference...
  • Page 186 (9) Precautions • Before starting the temperature control using the L60TC4, power on a controlled object such as a heater. If the temperature control is started with a heater powered off, PID constants are calculated based on a response that differs from the original characteristics using self-tuning. Temperature process value (PV) Set value (SV) Original response...

  • Page 187: Peak Current Suppression Function

    CHAPTER 8 FUNCTIONS 8.2.16 Peak current suppression function Standard The upper limit output limiter value for each channel is changed automatically and the peak current is suppressed by dividing timing for transistor outputs using this function. When the peak current suppression When the peak current suppression control function is not used control function is used...
  • Page 188 (1) The number of timing divided and upper limit output limiter Set the number of timing to be divided (setting in Peak current suppression control group setting (Un\G784) in the setting mode (Setting/operation mode status (Xn1): off). The setting is enabled by turning off, on, and off Setting change instruction (YnB).
  • Page 189 CHAPTER 8 FUNCTIONS (2) Examples of dividing timing (a) Four timing The following table shows two examples. Example Channel Group Group 1 Group 2 Example 1 Group 3 Group 4 Group 1 Group 2 Example 2 Not divided Group 4 The following shows the relationship between groups and the values (%) of CH Upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138).
  • Page 190 (b) Three timing The following table shows two examples. Example Channel Group Group 1 Group 2 Example 1 Group 2 Group 3 Group 1 Group 2 Example 2 Group 3 Not divided The following shows the relationship between groups and the values (%) of CH Upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138).

  • Page 191: Setting Method

    CHAPTER 8 FUNCTIONS (c) Two timing The following table shows two examples. Example Channel Group Group 1 Group 1 Example 1 Group 2 Group 2 Group 1 Group 2 Example 2 Not divided Not divided The following shows the relationship between groups and the values (%) of CH Upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138).

  • Page 192: Simultaneous Temperature Rise Function

    8.2.17 Simultaneous temperature rise function Standard This function allows several loops to reach the set value (SV) at the same time. Simultaneous temperature rise can be performed on up to two groups separately by setting a group for the channels to rise at the same time. This function is effective for controlled objects where the temperature rise should complete at the same time.
  • Page 193 CHAPTER 8 FUNCTIONS (1) Operation of the simultaneous temperature rise function The channel with the temperature rise reaching the set value (SV) last among channels satisfying the condition for start-up in the same group is used as a standard when the simultaneous temperature rise function is started up.
  • Page 194 When channels are divided as following: • CH1 and CH2: Group 1 • CH3 and CH4: Group 2 Temperature process value (PV) Matches temperature rise completion time in each group CH1 Set value (SV) CH2 Set value (SV) CH3 Set value (SV) CH4 Set value (SV) Temperature rise start Group 1...
  • Page 195 CHAPTER 8 FUNCTIONS (2) Conditions for the simultaneous temperature rise function The simultaneous temperature rise function is executed when all the following conditions are satisfied: • When the control is started or the set value (SV) is changed • When the set value (SV) is larger than the temperature process value (PV) •...
  • Page 196 (5) Simultaneous temperature rise AT PID constants and the simultaneous temperature rise parameter are calculated. The waveform upon execution is the same as that for the auto tuning function. For details on the auto tuning function, refer to the following. Page 141, Section 8.2.7 (a) How to execute the simultaneous temperature rise AT function Follow the instructions below.
  • Page 197 CHAPTER 8 FUNCTIONS (c) Condition for the simultaneous temperature rise AT The simultaneous temperature rise parameter is calculated when all the following conditions are satisfied after the procedure described on Page 194, Section 8.2.17 (5) (a) is executed: • When the module is in the PID control (all of the proportional band (P), integral time (I), and derivative time (D) are not 0) •...
  • Page 198 (d) When the simultaneous temperature rise parameter cannot be calculated The simultaneous temperature rise parameter cannot be calculated under the following conditions: • When the maximum gradient is not determined • When the saturation time for output is short The L60TC4 turns CH AT simultaneous temperature rise parameter calculation error status (b1 of Un\G573, Un\G605, Un\G637, Un\G669) to 1 (ON).
  • Page 199 CHAPTER 8 FUNCTIONS (6) The simultaneous temperature rise parameter setting using self-tuning The control response at the time of temperature rise is constantly monitored during self-tuning and the simultaneous temperature rise parameter is calculated based on the characteristics of a controlled object. For details on the self-tuning function, refer to the following.
  • Page 200 (c) When the simultaneous temperature rise parameter cannot be calculated The simultaneous temperature rise parameter cannot be calculated under the following conditions: • When the maximum gradient is not determined • When the saturation time for output is short The L60TC4 turns CH Simultaneous temperature rise parameter error status (b9 of Un\G575, Un\G607, Un\G639, Un\G671) to 1 (ON).
  • Page 201 CHAPTER 8 FUNCTIONS (7) Operation when the simultaneous temperature rise parameter is calculated with self-tuning and auto tuning (a) When the simultaneous temperature rise AT is started before the simultaneous temperature rise parameter is calculated with self-tuning The simultaneous temperature rise parameter is not calculated neither with self-tuning nor auto tuning. PID constants are changed.
  • Page 202 (b) When the simultaneous temperature rise AT is started after the simultaneous temperature rise parameter is calculated with self-tuning The simultaneous temperature rise parameter calculated with self-tuning is effective. Then PID constants are changed with auto tuning. Temperature Auto tuning waveform process value Maximum gradient (PV)
  • Page 203 CHAPTER 8 FUNCTIONS (c) When CH Auto tuning instruction (Yn4 to Yn7) is turned off and on in the setting mode and the module is shifted to the operation mode After the module is shifted to the operation mode (Setting/operation mode instruction (Yn1) is turned off and on), the simultaneous temperature rise parameter and PID constants are changed with auto tuning.
  • Page 204 (d) When auto tuning is started with the temperature process value (PV) within the stable judgment width (1°C ( )) after the setting mode is changed to the operation mode Until the temperature process value (PV) goes outside the stable judgment width (1°C ( )), the data measured after the module is shifted to the operation mode (Setting/operation mode instruction (Yn1) is turned off and on) can be used.

  • Page 205: Forward/Reverse Action Selection Function

    CHAPTER 8 FUNCTIONS 8.2.18 Forward/reverse action selection function Standard Whether PID operation is performed with forward action or reverse action can be selected using this function. This function can be used in all the control methods (two-position control, P control, PI control, PD control, and PID control).

  • Page 206: Loop Disconnection Detection Function

    8.2.19 Loop disconnection detection function Standard Using this function detects an error occurring within a control system (control loop) due to reasons such as a load (heater) disconnection, an externally-operable device (such as a magnetic relay) failure, and input disconnection. (1) How an error is detected Since the time a PID operation value becomes 100% or 0%, the amount of changes in the temperature process value (PV) is monitored every unit time and disconnection of a heater and input is detected.
  • Page 207 CHAPTER 8 FUNCTIONS (b) Setting for the dead band Set the dead band under "Loop disconnection detection dead band". Project window [Intelligent Function Module] Module name [Parameter] When the loop disconnection detection dead band is set, loop disconnection does not occur even if the temperature does not change by 2°C ( ) or more with the set value (SV) 100% or 0% of control output.

  • Page 208: Proportional Band Setting Function

    8.2.20 Proportional band setting function Heating-cooling Proportional band (P) values can be set for heating and cooling separately using this function. Different gradients can be set by using different proportional band (P) values in a heating and cooling area. Heating proportional Cooling proportional Manipulated value band (Ph)

  • Page 209: Cooling Method Setting Function

    CHAPTER 8 FUNCTIONS 8.2.21 Cooling method setting function Heating-cooling An auto tuning calculation formula is automatically selected according to the selected cooling method during auto tuning and the operation is started using this function. Select one of the following characteristics: •...
  • Page 210 (1) Setting method Set the characteristic under "Cooling method setting". Project window [Intelligent Function Module] Module name [Parameter] ● An auto tuning calculation formula to find PID constants is determined based on this setting; therefore, configure this setting before executing auto tuning. ●...

  • Page 211: Overlap/Dead Band Function

    CHAPTER 8 FUNCTIONS 8.2.22 Overlap/dead band function Heating-cooling In heating-cooling control, the temperature process value (PV) significantly changes due to slight heating or cooling control output when the heat produced by a controlled object and natural cooling are being balanced. Consequently, excessive output may be performed.
  • Page 212 (2) Dead band Dead band refers to the temperature area where neither heating control output nor cooling control output is performed. When the temperature process value (PV) is stable within this area, output is not performed for the slight change in the temperature, resulting in energy saving. When buffer memory values are set as following: •...
  • Page 213 CHAPTER 8 FUNCTIONS (3) Dead band setting in two-position control (three-position control) Set the dead band in two-position control. Three-position control can be achieved by setting a dead band area in addition to areas for the manipulated value for heating (MVh) 100% and the manipulated value for cooling (MVc) 100%. Manipulated value for heating (MVh): 0% Heating only...

  • Page 214: Temperature Conversion Function (Using Unused Channels)

    8.2.23 Temperature conversion function (using unused channels) Heating-cooling In heating-cooling control (normal mode) and mix control (normal mode), only temperature measurement can be performed by using unused temperature input terminals. When this function is used, temperature control and alert judgment are not performed. (1) Temperature input terminals that can be used Temperature input terminals that can be used for this function differ depending on the control mode.
  • Page 215 CHAPTER 8 FUNCTIONS (3) Buffer memory areas that can be used with this function The following table lists the buffer memory areas that can be used with this function (the terminals used correspond to the buffer memory areas in the table). Buffer memory Buffer memory area name Reference...
  • Page 216 (4) Setting method Set whether using this function under "Temperature conversion setting". Project window [Intelligent Function Module] Module name [Parameter] When heating-cooling control (expanded mode) or mix control (expanded mode) is selected, the setting in CH Temperature conversion setting (Un\G695 to Un\G697) is ignored.

  • Page 217: Heater Disconnection Detection Function

    CHAPTER 8 FUNCTIONS 8.2.24 Heater disconnection detection function Standard Heating-cooling When transistor output is on, whether a heater is disconnected or not can be checked based on a reference heater current value (load current value detected by a current sensor (CT)) using this function. A reference heater current value and heater disconnection alert current value are compared.
  • Page 218 (From the previous page) ↓ Monitor CT Heater current process value (Un\G256 to Un\G263) and check the current value of when the heater is on. ( Page 390, Appendix 2 (58)) ↓ Set the value monitored in CT Heater current process value (Un\G256 to Un\G263) under "CT Reference heater current value".
  • Page 219 CHAPTER 8 FUNCTIONS (3) Heater disconnection correction function When heater voltage is dropped, heater current is reduced. The L60TCTT4BW and L60TCRT4BW detect heater disconnection by measuring heater current; therefore, an accidental alert may occur due to a voltage change caused by a reduced heater voltage. The heater disconnection correction function offsets the amount of heater current reduced (heater disconnection correction), preventing disconnection from being detected.
  • Page 220 When CH Heater disconnection alert setting (Un\G58, Un\G90, Un\G122, Un\G154) is 80% and the differences between CH Heater current and the reference heater current value are the following values: • CH1: -16% • CH2: -17% • CH3: -22% • CH4: -19% The following table lists the result.
  • Page 221 CHAPTER 8 FUNCTIONS (4) To clear the disconnection detection status Disconnection detection is disabled by restoring the disconnection status and turning CH Heater disconnection detection (b12 of Un\G5 to Un\G8) from 1 (ON) to 0 (OFF). ( Page 336, Appendix 2 (3)) Under the following setting, however, CH Heater disconnection detection (b12 of Un\G5 to Un\G8) does not change from 1 (ON) to 0 (OFF) unless a heater turns on.

  • Page 222: Output Off-Time Current Error Detection Function

    8.2.25 Output off-time current error detection function Heating-cooling Standard Transistor output errors can be detected using this function. The current sensor (CT) for heater disconnection detection is used to check for errors of when transistor output is off. A heater current measurement value and heater disconnection alert current value are compared. If the heater current measurement value is larger than the heater disconnection alert current value, an output off-time current error occurs.

  • Page 223: Common Functions

    CHAPTER 8 FUNCTIONS Common Functions This section explains the common functions between the temperature input mode and temperature control mode. 8.3.1 Temperature process value (PV) scaling function Common The temperature process value (PV) is scaled up or down to the value in a set range, and can be stored into the buffer memory using this function.

  • Page 224: Project Window

    (2) Setting method Set the function on "Parameter". Follow the instructions below. Project window [Intelligent Function Module] Module name [Parameter] Enable or disable the temperature process value (PV) scaling function under "Process value (PV) scaling function enable/disable setting". ↓ Set a scaling upper limit value and lower limit value under "Process value (PV) scaling lower limit value"...

  • Page 225: Sensor Compensation Function

    CHAPTER 8 FUNCTIONS 8.3.2 Sensor compensation function Common When a difference occurs between the temperature process value (PV) and the actual temperature due to reasons such as a measuring condition, the difference can be corrected using this function. The following two types are available.
  • Page 226 (a) How to execute 1-point sensor compensation (standard) (when using GX Works2) Set the setting on the "Sensor Compensation Function" window. [Tool] [Intelligent Function Module Tool] [Temperature Control Module] [Sensor Compensation Function] Select the module where sensor correction is executed and click ↓...
  • Page 227 CHAPTER 8 FUNCTIONS (From the previous page) ↓ Select "1-point Sensor Compensation (Standard)" under "Sensor Compensation Function Selection". ↓ Set "Sensor Compensation Value" and click ↓ Click ↓ Click ↓ To back up the correction value in the non-volatile memory, click ↓...
  • Page 228 (From the previous page) ↓ Click ↓ Click ↓ Click ↓ Click ↓ Remark By executing 1-point sensor compensation in "Sensor Compensation", the action after the correction can be checked temporarily. To use the compensation value set in "Sensor Compensation" thereafter, set it on "Sensor correction value setting"...
  • Page 229 CHAPTER 8 FUNCTIONS (2) 2-point sensor compensation function With this function, the difference between the temperature process value (PV) and the actual temperature between the two points selected in advance (a corrected offset value and a corrected gain value) is stored. Based on this gradient, the difference between a sensor and the actual temperature is corrected.
  • Page 230 (a) How to execute 2-point sensor compensation (when using GX Works2) Set this function on the "Sensor Compensation Function" window. [Tool] [Intelligent Function Module & Tool] [Temperature Control Module] [Sensor Compensation Function] Select the module where sensor correction is executed and click ↓...
  • Page 231 CHAPTER 8 FUNCTIONS (From the previous page) ↓ Select "2-point Sensor Compensation" under "Sensor Compensation Function Selection". ↓ Monitor "Temperature process value (PV)" and enter the corrected offset value. ↓ Set the Temperature process value (PV) to be input under "Compensation Offset Value". Then click ↓...
  • Page 232 (From the previous page) ↓ Click ↓ Click ↓ Click ↓ Click ↓ Click ↓ To back up the correction value in the non-volatile memory, click ↓ (To the next page)
  • Page 233 CHAPTER 8 FUNCTIONS (From the previous page) ↓ Click ↓ Click ↓ Click ↓ Click ↓ To shift from the setting mode to the operation mode, click ↓ Enter the value using devices such as a thermocouple, platinum resistance thermometer, and standard DC voltage generator, or based on a general resistance value.
  • Page 234 (b) How to execute 2-point sensor compensation (when using the program) Follow the instructions below. Setting start Set the temperature process value (PV) equivalent to be input for CH 2-point sensor Switch the module to the setting mode (turn on and compensation gain value (compensation value) then off the setting/operation mode instruction (Yn1)).
  • Page 235 CHAPTER 8 FUNCTIONS ● If a write data error (error code: ) occurs during 2-point sensor compensation, correctly configure the setting for 2-point sensor compensation again. (The value set for 2-point sensor compensation of when an error occurred is not written in the L60TC4.) ●...

  • Page 236: Auto Configuration At Input Range Change Function

    8.3.3 Auto configuration at input range change function Common When an input range is changed, using this function automatically changes related buffer memory data to prevent an error outside the setting range. Set the function on the "Switch Setting" window. For details on the setting method, refer to the following.

  • Page 237: Buffer Memory Data Backup Function

    CHAPTER 8 FUNCTIONS 8.3.4 Buffer memory data backup function Common This function allows buffer memory data to be stored in the non-volatile memory and backed up. The backed-up data is transferred from the non-volatile memory to the buffer memory when the power is turned off and on or the CPU module is reset and the reset is cancelled.
  • Page 238 (3) Data read from non-volatile memory Follow the instructions below. • Turn off and on the power or reset the CPU module and cancel the reset. • Set CH Memory of PID constants read instruction (Un\G62, Un\G94, Un\G126, Un\G158) to Requested (1).

  • Page 239: Error History Function

    CHAPTER 8 FUNCTIONS 8.3.5 Error history function Common The error or alert occurred with the L60TC4 is stored in the buffer memory areas (Un\G1280 to Un\G1404) as history. Up to 16 error history data can be stored. (1) Processing of the error history function An error code and error occurrence time are stored starting from Error history No.1 (the start address is Un\G1280).
  • Page 240 If the 17th error occurred: The 17th error is stored in Error history No.1 and 1280 (the start address of Error history No.1) is overwritten in Latest address of error history (Un\G1279). Latest error code address (Un\G1279) Address 1280 Error history No.1 17th error 1st error 1288...

  • Page 241: Module Error History Collection Function

    CHAPTER 8 FUNCTIONS 8.3.6 Module error history collection function Common The errors and alarms occurred with the L60TC4 are collected into the CPU module. The CPU module keeps the error information collected from the L60TC4 as a module error history in the memory where data is maintained even at the time of the power failure.

  • Page 242: Error Clear Function

    8.3.7 Error clear function Common When an error occurs, the error can be cleared on the system monitor. Clicking the button on the system monitor clears the error code stored in Error code (Un\G0) and turns off the ERR.LED. The operation is the same as when an error is cleared using Error reset instruction (Yn2). However, the error history is not cleared.

  • Page 243: Chapter 9 Display Unit

    CHAPTER 9 DISPLAY UNIT CHAPTER 9 DISPLAY UNIT This chapter describes the functions of the display unit that can be used with the L60TC4. For details on how to operate the display unit, the functions, and menu structure, refer to the following manual. MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals) Display Unit The display unit is an LCD display to be attached to the CPU module.
  • Page 244 (2) Screen transition to the initial setting change screen The following figure shows the screen transition to the initial setting change screen. Conversion enable and disable setting screen Standby screen Rate alarm setting screen Primary delay filter screen Rate alarm detection cycle screen Function selection screen Process alarm setting screen...

  • Page 245: Setting Value Change Screen List

    CHAPTER 9 DISPLAY UNIT Setting Value Change Screen List The following table shows the setting value change screen list. (1) Displayed in English Name Input limits Screen Upper limit Lower limit format Setting item Screen display value value ⎯ ⎯ Conversion enable/disable setting CONVERSION Selection...
  • Page 246 (2) Conversion enable/disable setting Select "DISABLE or "ENABLE" in the "Conversion enable and disable setting" screen. "Conversion enable and disable setting" screen Use the buttons to select "DISABLE" or "ENABLE", then make a confirmation with the button. (3) Primary delay digital filter setting Set the time constant for the primary delay digital filter in the "Primary delay filter"...
  • Page 247 CHAPTER 9 DISPLAY UNIT (4) Process alarm setting Select "DISABLE or "ENABLE" in the "Process alarm setting" screen. "Process alarm setting" screen Use the buttons to select "DISABLE" or "ENABLE", then make a confirmation with the button. (If "ENABLE" is selected, proceed to step 2.) ↓...
  • Page 248 (5) Rate alarm setting Select "DISABLE" or "ENABLE" in the "Rate alarm setting" screen. "Rate alarm setting" screen Use the buttons to select "DISABLE" or "ENABLE", then make a confirmation with the button. (If "ENABLE" is selected, proceed to step 2.) ↓...
  • Page 249 CHAPTER 9 DISPLAY UNIT (6) Scaling setting Select "DISABLE" or "ENABLE" in the "Scaling setting" screen. "Scaling setting" screen Use the buttons to select "DISABLE" or "ENABLE", then make a confirmation with the button. (If "ENABLE" is selected, proceed to step 2.) ↓...

  • Page 250: Checking And Clearing Errors

    Checking and Clearing Errors By operation from the display unit, the error that occurred in the L60TC4 can be checked. The error that is occurring can also be cleared. (1) Checking the error The error that occurred in the L60TC4 can be checked by specifying the error code (Un\G0) from "Buffer memory monitor/test".
  • Page 251 CHAPTER 9 DISPLAY UNIT (2) Clearing the error To clear the error, remove the error cause and turn Error clear request (Yn2) off, on, and off from "Device monitor/test". When an error occurred in the L60TC4 with the start I/O number 1 "CPU monitor/test"...

  • Page 252: Chapter 10 Programming

    CHAPTER 10 PROGRAMMING This chapter describes the programs of the L60TC4. When applying any of the program examples introduced in this chapter to the actual system, verify that the control of the target system has no problem thoroughly. 10.1 Programming Procedure (1) Temperature input mode Create a program that performs temperature conversion in the L60TC4 using the following procedure.
  • Page 253 CHAPTER 10 PROGRAMMING (2) Temperature control mode Create a program that performs temperature control in the L60TC4 using the following procedure. Start Configure the initial setting using GX Works2? Create a program to configure initial data (such as input range and set value Configure initial data (such as input range and set value (SV)) using GX Works2.

  • Page 254: When Using The Module In A Standard System Configuration

    10.2 When Using the Module in a Standard System Configuration This section describes the following program examples. Mode Overview of the program example Reference This is a program example where the L60TC4 is used as a temperature input Page 252, Temperature input mode module.

  • Page 255: Programming Condition

    CHAPTER 10 PROGRAMMING ● When using the L26CPU-BT, set the I/O assignment of the built-in CC-Link of the L26CPU-BT to X/YFE0 to X/YFFF so that the I/O assignment be the same as that of the system configuration above. ● When the L60TCTT4BW or the L60TCRT4BW is used, the I/O assignment is the same as that of the system configuration shown above.

  • Page 256: Switch Setting

    (4) Switch Setting Configure settings such as the input mode selection and the as follows. auto-setting at the input range change Project window [Intelligent Function Module] [L60TCTT4] [Switch Setting] Item Setting value Input Mode Selection Temperature Input Mode Auto-setting at Input Range Change 0: Disable Sampling Cycle Selection 1: 250ms...
  • Page 257 CHAPTER 10 PROGRAMMING Description Item Process alarm upper lower 1300.0°C 295°C 1300.0°C 1300°C limit value Process alarm upper upper 1300.0°C 300°C 1300.0°C 1300°C limit value Rate alarm alert output 1: Disable 1: Disable 0: Enable 1: Disable enable/disable setting Rate alarm alert detection 1 Times 1 Times 4 Times...
  • Page 258 (b) Parameter setting Set the contents of initial settings in the parameter. Open the "Parameter" window. Project window [Intelligent Function Module] [L60TCTT4] [Switch Setting] Click to set items unnecessary for the mode set on Switch Setting to 0. Set the parameter. Setting value Item Description...
  • Page 259 CHAPTER 10 PROGRAMMING Setting value Item Description Process alarm Set the process alarm upper upper lower limit 1300.0°C 295.0°C 1300.0°C 1300°C lower limit value. value Process alarm Set the process alarm upper upper upper limit 1300.0°C 300.0°C 1300.0°C 1300°C upper limit value. value Rate alarm alert Set whether to enable or disable...
  • Page 260 (c) Auto refresh setting Set the device to be automatically refreshed. Project window [Intelligent Function Module] [L60TCTT4] [Auto_Refresh] Setting value Item Description An error code or alarm code is Error code stored. The detected temperature Temperature value where sensor correction ⎯...
  • Page 261 CHAPTER 10 PROGRAMMING (d) Writing parameter of an intelligent function module Write the set parameter to the CPU module. Then reset the CPU module or turn off and on the power supply of the programmable controller. [Online] [Write to PLC...] or Power OFF (e) Program example •...
  • Page 262 (7) Program example of when not using the parameter of an intelligent function module (a) Devices used by a user Device Description Module READY flag Error occurrence flag L60TCTT4 (X10 to X1F) Hardware error flag Setting change completion flag Set value write instruction Error code reset instruction LX42C4 (X20 to X5F) Operation mode setting instruction...
  • Page 263 CHAPTER 10 PROGRAMMING (b) Program example • Program that changes the setting/operation mode The program is the same as that of when the parameter of the intelligent function module is used. Page 259, Section 10.2.1 (6) (e)) • Initial setting program Flag 0 for setting value write: ON Flag 1 for setting value write: ON CH1 Input range: 49...
  • Page 264 • Program that reads the temperature process value (PV) and takes action when a process alarm or a rate alarm occurs Read Conversion completion flag to D60. Read CH1 Temperature process value (PV) to D11. Read CH2 Temperature process value (PV) to D12. Read CH3 Temperature process value (PV) to D13.

  • Page 265: Standard Control (Such As Auto Tuning, Self-Tuning, And Error Code Read)

    CHAPTER 10 PROGRAMMING 10.2.2 Standard control (such as auto tuning, self-tuning, and error code read) This section describes the program example for operations such as the auto tuning, self-tuning, and error code read. (1) System configuration The following figure shows the system configuration for operations such as the auto tuning, self-tuning, and error code read.
  • Page 266 (2) Programming condition This program is designed to read the temperatures measured by the thermocouple (K type, 0°C to 1300°C) connected to CH1 for the control. An error code can be read and reset. The self-tuning function automatically sets the PID constants optimal to CH1. (3) Wiring example The following figure shows a wiring example.
  • Page 267 CHAPTER 10 PROGRAMMING (4) Switch Setting Configure settings such as the input mode selection and the auto-setting at the input range change as follows. Project window [Intelligent Function Module] [L60TCTT4] [Switch Setting] Set value Item Input Mode Selection Temperature Control Mode Output Setting at CPU Stop 0: CLEAR 0: CLEAR...
  • Page 268 (5) Contents of the initial setting Description Item 2: Thermocouple K 2: Thermocouple K 2: Thermocouple K 2: Thermocouple K Measured Measured Measured Measured Input range Temperature Range Temperature Range Temperature Range Temperature Range (0 to 1300°C) (0 to 1300°C) (0 to 1300°C) (0 to 1300°C) Set value (SV) setting...
  • Page 269 CHAPTER 10 PROGRAMMING (b) Parameter setting Set the contents of initial settings in the parameter. Open the "Parameter" window. Project window [Intelligent Function Module] [L60TCTT4] [Parameter] Click to set items unnecessary for the mode set on Switch Setting to 0. Set the parameter.
  • Page 270 Setting value Item Description Lower limit setting Set the lower limit of the 0°C 0°C 0°C 0°C limiter set value (SV). Set the operation of the 1: Starting ST (PID 0: Do Not Run the 0: Do Not Run the 0: Do Not Run the Self-tuning setting self-tuning.
  • Page 271 CHAPTER 10 PROGRAMMING (d) Writing parameter of an intelligent function module Write the set parameter to the CPU module. Then reset the CPU module or turn off and on the power supply of the programmable controller. [Online] [Write to PLC...] or Power OFF (e) Performing auto tuning Set the "Automatic backup setting after auto tuning of PID constants"...
  • Page 272 (f) Program example • Program that changes the setting/operation mode This program is the same as that of when it is used as a temperature input module. ( Page 259, Section 10.2.1 (6) (e)) • Program that reads the PID constants from the non-volatile memory CH1 Memory's PID constant read instruction: With instruction Read bit data from b7 to b0 of the...
  • Page 273 CHAPTER 10 PROGRAMMING (7) Program example of when not using the parameter of an intelligent function module (a) Devices used by a user Device Description Module READY flag Setting/operation mode status Error occurrence flag Hardware error flag L60TCTT4 (X10 to X1F) CH1 Auto tuning status Back-up of the set value completion flag Setting change completion flag...
  • Page 274 (b) Program example • Program that changes the setting/operation mode This program is the same as that of when it is used as a temperature input module. ( Page 259, Section 10.2.1 (6) (e)) • Initial setting program Flag 0 for setting value write: ON Flag 1 for setting value write: ON CH1 Unused channel setting: Used CH2 Unused channel setting: Unused...
  • Page 275 CHAPTER 10 PROGRAMMING • Program that executes the auto tuning and backs up the PID constants in the non-volatile memory CH1 Auto tuning instruction: ON CH1 Auto tuning instruction: OFF CH1 Auto tuning completion flag: ON Setting value backup instruction: ON Setting value backup instruction: OFF CH1 Auto tuning completion flag: OFF •...

  • Page 276: Standard Control (Peak Current Suppression Function, Simultaneous Temperature Rise Function)

    10.2.3 Standard control (peak current suppression function, simultaneous temperature rise function) This section describes the program example where the peak current suppression function and the simultaneous temperature rise function are used for the control. (1) System configuration The following figure shows the system configuration example of when the peak current suppression function and the simultaneous temperature rise function are used for the control.
  • Page 277 CHAPTER 10 PROGRAMMING (2) Programming condition • Program example where the peak current suppression function is used This program is designed to suppress the peak current by automatically changing the values of the upper limit output limiter of CH1 to CH4 and dividing the timing of the transistor output into four timing. When the peak current suppression When the peak current suppression control function is not used...
  • Page 278 • Program example where the simultaneous temperature rise function is used This program is designed to classify the CH1 and CH2 into group 1 and CH3 and CH4 into group 2 so that the channels in each group reach the set values (SV) simultaneously. Temperature process value (PV) Matches temperature rise completion time in each group...
  • Page 279 CHAPTER 10 PROGRAMMING (4) Switch Setting Configure settings such as the input mode selection and the auto-setting at the input range change as follows. Project window [Intelligent Function Module] [L60TCTT4] [Switch Setting] Set value Item Input Mode Selection Temperature Control Mode Output Setting at CPU Stop 0: CLEAR 0: CLEAR...
  • Page 280 (5) Contents of the initial setting Description Item 2: ThermocoupleK 2: ThermocoupleK 2: ThermocoupleK 2: ThermocoupleK Measured Measured Measured Measured Input range Temperature Range Temperature Range Temperature Range Temperature Range (0 to 1300°C) (0 to 1300°C) (0 to 1300°C) (0 to 1300°C) Set value (SV) setting 200°C 250°C...
  • Page 281 CHAPTER 10 PROGRAMMING (b) Parameter setting Set the contents of initial settings in the parameter. Open the "Parameter" window. Project window [Intelligent Function Module] [L60TCTT4] [Parameter] Click to set items unnecessary for the mode set on Switch Setting to 0. Set the parameter.
  • Page 282 Setting value Item Description Set the target channels for Peak current the peak current suppression suppression function and 1: Group 1 2: Group 2 3: Group 3 4: Group 4 control group the gap of the control output setting cycles between channels. Simultaneous 1: AT for 1: AT for...
  • Page 283 CHAPTER 10 PROGRAMMING (c) Auto refresh setting Set the device to be automatically refreshed. Project window [Intelligent Function Module] [L60TCTT4] [Auto_Refresh] Setting value Item Description An error code or alarm code is Error code stored. The detected temperature Temperature value where sensor correction process value (PV) was performed is stored.
  • Page 284 (e) Performing auto tuning Set the "Automatic backup setting after auto tuning of PID constants" to "ON" and perform the auto tuning. [Tool] [Intelligent Function Module Tool] [Temperature Control Module] [Auto Tuning...] [L60TCTT4] (f) Program example where the peak current suppression function or the simultaneous temperature rise function is used •...
  • Page 285 CHAPTER 10 PROGRAMMING (7) Program example of when not using the parameter of an intelligent function module (a) Devices used by a user Device Description Module READY flag Setting/operation mode status Error occurrence flag Hardware error flag L60TCTT4 (X10 to X1F) X14 to X17 Auto tuning status Back-up of the set value completion flag...
  • Page 286 (b) Program example where the peak current suppression function is used • Program that changes the setting/operation mode This is the same as that of when it is used as a temperature input module. ( Page 259, Section 10.2.1 (6) (e)) •...
  • Page 287 CHAPTER 10 PROGRAMMING • Program that executes the auto tuning and backs up the PID constants in the non-volatile memory CH1 Auto tuning instruction: ON CH2 Auto tuning instruction: ON CH3 Auto tuning instruction: ON CH4 Auto tuning instruction: ON CH1 Auto tuning instruction: OFF CH1 Auto tuning completion flag: ON CH2 Auto tuning instruction: OFF...
  • Page 288 (c) Program example where the simultaneous temperature rise function is used • Program that changes the setting/operation mode This program is the same as that of when it is used as a temperature input module. ( Page 259, Section 10.2.1 (6) (e)) •...
  • Page 289 CHAPTER 10 PROGRAMMING • Program that executes the auto tuning and backs up the PID constants in the non-volatile memory This program is the same as that of when the peak current suppression function is used. ( Page 284, Section 10.2.3 (7) (b)) •...

  • Page 290: When Performing The Heating-Cooling Control

    10.2.4 When performing the heating-cooling control This section describes the program example to perform the heating-cooling control. (1) System configuration The following figure shows the system configuration example to perform the heating-cooling control. Power supply module (L61P) CPU module (L02CPU) Temperature control module (L60TCTT4) Input module (LX42C4) Output module (LY42NT1P)

  • Page 291: Wiring Example

    CHAPTER 10 PROGRAMMING (2) Program conditions This program is designed to perform the heating-cooling control by using the temperature input of CH1. (3) Wiring example The following figure shows a wiring example. Heater operation input OUT1 OUT2 Cooling equipment OUT3 operation input COM- OUT4...

  • Page 292: Switch Setting

    (4) Switch Setting Configure settings such as the input mode selection and the auto-setting at input range change as follows. Project window [Intelligent Function Module] [L60TCTT4] [Switch Setting] Setting value Item Input Mode Selection Temperature Control Mode Output Setting at CPU Stop 0: CLEAR 0: CLEAR 0: CLEAR...
  • Page 293 CHAPTER 10 PROGRAMMING (5) Contents of the initial setting Description Item 2: ThermocoupleK 2: ThermocoupleK 2: ThermocoupleK 2: ThermocoupleK Measured Measured Measured Measured Input range Temperature Range Temperature Range Temperature Range Temperature Range (0 to 1300°C) (0 to 1300°C) (0 to 1300°C) (0 to 1300°C) Set value (SV) setting 200°C...
  • Page 294 (b) Parameter setting Set the contents of initial settings in the parameter. Open the "Parameter" window. Project window [Intelligent Function Module] [L60TCTT4] [Parameter] Click to set items unnecessary for the mode set on Switch Setting to 0. Set the parameter. Setting value Item Description...
  • Page 295 CHAPTER 10 PROGRAMMING Setting value Item Description Set the pulse cycle Cooling control (ON/OFF cycle) of the 30 s 30 s 30 s output cycle setting transistor output. Configure the Overlap/dead band overlap/dead band -0.3 % 0.0 % 0.0 % 0.0 % setting setting.
  • Page 296 (c) Auto refresh setting Set the device to be automatically refreshed. Project window [Intelligent Function Module] [L60TCTT4] [Auto_Refresh] Setting value Item Description An error code or alarm code is Error code stored. The detected temperature Temperature value where sensor correction ⎯...
  • Page 297 CHAPTER 10 PROGRAMMING (e) Performing auto tuning Set the "Automatic backup setting after auto tuning of PID constants" to "ON" and perform the auto tuning. [Tool] [Intelligent Function Module Tool] [Temperature Control Module] [Auto Tuning...] "L60TCTT4" (f) Program example • Program that changes the setting/operation mode This program is the same as that of when it is used as a temperature input module.
  • Page 298 (7) Program example of when not using the parameter of an intelligent function module (a) Devices used by a user Device Description Module READY flag Setting/operation mode status Error occurrence flag Hardware error flag L60TCTT4 (X10 to X1F) CH1 Auto tuning status Back-up of the set value completion flag Setting change completion flag Set value write instruction...
  • Page 299 CHAPTER 10 PROGRAMMING (b) Program example • Program that changes the setting/operation mode This program is the same as that of when it is used as a temperature input module. ( Page 259, Section 10.2.1 (6) (e)) • Initial setting program Flag 0 for setting value write: ON Flag 1 for setting value write: ON CH1 Unused channel setting: Used...

  • Page 300: When The Module Is Connected To The Head Module

    10.3 When the Module is Connected to the Head Module This section describes the program example of when the module is connected to the head module. (1) System configuration The following figure shows the system configuration example of when the module is connected to the head module.
  • Page 301 CHAPTER 10 PROGRAMMING (3) Wiring example The wiring is the same as the that of when the module is in the standard control (such as auto tuning, self-tuning, and error code read). ( Page 264, Section 10.2.2 (3)) (4) Switch Setting Configure settings on the intelligent device station.
  • Page 302 Display the network parameter setting window and configure the setting as follows. Project window [Parameter] [Network Parameter] [Ethernet/CC IE/MELSECNET] Display the network range assignment setting window and configure the setting as follows. Project window [Parameter] [Network Parameter] [Ethernet/CC IE/MELSECNET]...
  • Page 303 CHAPTER 10 PROGRAMMING Display the refresh parameter setting window and configure the setting as follows. Project window [Parameter] [Network Parameter] [Ethernet/CC IE/MELSECNET] Write the set parameter to the CPU module on the master station. Then reset the CPU module or turn off and on the power supply of the programmable controller.
  • Page 304 (7) Setting on the intelligent device station Create a project on GX Works2. Select "LCPU" for "PLC Series:" and select "LJ72GF15-T2" for "PLC Type:". [Project] [New...] Display the PLC parameter setting window and configure the setting as follows. Project window [Parameter] [PLC Parameter] "Communication Head Setting"...
  • Page 305 CHAPTER 10 PROGRAMMING Display the L60TCTT4 Switch Setting window and configure the setting as follows. Project window [Intelligent Function Module] [L60TCTT4] [Switch Setting] Setting value Item Input Mode Selection Temperature Control Mode Output Setting at CPU Stop 0: CLEAR 0: CLEAR 0: CLEAR 0: CLEAR Error...
  • Page 306 Display the L60TCTT4 initial setting window, click , and configure the setting as follows. Project window [Intelligent Function Module] [L60TCTT4] [Parameter] Setting value Item Description 2: ThermocoupleK 2: ThermocoupleK 2: ThermocoupleK 2: ThermocoupleK Set the temperature sensor Measured Measured Measured Measured Input range used for the L60TC4 and the...
  • Page 307 CHAPTER 10 PROGRAMMING Display the L60TCTT4 auto refresh setting window and configure the setting as follows. Project window [Intelligent Function Module] [L60TCTT4] Right-click [Auto_Refresh] Setting value Item Description An error code or alarm code is Error code W1050 stored. The detected temperature Temperature ⎯...
  • Page 308 Perform auto tuning. Set the "Automatic backup setting after auto tuning of PID constants" to "ON" and perform the auto tuning. [Tool] [Intelligent Function Module Tool] [Temperature Control Module] [Auto Tuning...] "L60TCTT4" (a) Devices used by a user Device Description Error code reset instruction Operation mode setting instruction LX42C4 (X20 to X5F)
  • Page 309 CHAPTER 10 PROGRAMMING (b) Program example Write the program to the CPU module on the master station. • Program that checks the data link status of the head module Check the data link status of the head module Add the following MCR instruction to the end of the program. •...

  • Page 310: Chapter 11 Troubleshooting

    CHAPTER 11 TROUBLESHOOTING This chapter describes the causes and corrective actions to take when a problem occurs in the L60TC4. 11.1 Before Troubleshooting Check whether any of the following LEDs are on. • The POWER LED on the power supply module •...
  • Page 311 CHAPTER 11 TROUBLESHOOTING (From the previous page) ↓ Click to open the "Module's Detailed Information" window. Check the error description and the corrective action to take under "Error and Solution". When the error description cannot be confirmed after doing the operation above, proceed with the following troubleshooting.

  • Page 312: Checks Using Leds

    Properly connect the cold junction temperature compensation resistor. only) A hardware failure occurred in the L60TC4. Others Please consult your local Mitsubishi system service, service center, or representative, explaining a detailed description of the problem. (2) When flashing Check Item...

  • Page 313: When The Alm Led Turns On Or Flashes

    CHAPTER 11 TROUBLESHOOTING 11.3.3 When the ALM LED turns on or flashes (1) When turning on Check Item Action Check CH Alert definition (Un\G5 to Un\G8) and take the appropriate Is CH Alert occurrence flag (XnC to XnF) on? corrective action. ( Page 336, Appendix 2 (3)) (2) When flashing Check Item...

  • Page 314: Checks Using Input Signals

    Properly connect the cold junction temperature compensation resistor. only) A hardware failure occurred in the L60TC4. Others Please consult your local Mitsubishi system service, service center, or representative, explaining a detailed description of the problem. 11.4.4 When the auto tuning does not start (CH...

  • Page 315: When The Auto Tuning Does Not Complete

    Has a backup to non-volatile memory failed? When writing fails again, a hardware is in failure. Please consult your local Mitsubishi system service, service center, or representative, explaining a detailed description of the problem. 11.4.8 When CH...

  • Page 316: Troubleshooting By Symptom

    11.5 Troubleshooting by Symptom This section describes troubleshooting using the wiring resistance values of thermocouples. 11.5.1 When the temperature process value (PV) is abnormal Check Item Action • Check the thermocouple wiring resistance value and check whether a difference in the temperatures was caused by the wiring resistance. Page 36, Section 3.2.2 (1)) Is the thermocouple wiring resistance value too high? •...

  • Page 317: Error Code List

    • Replace the L60TC4. 0001 Hardware error symptom. • Please consult your local Mitsubishi system service, service center, or representative, explaining a detailed description of the problem. • The data written is retained. • Return the value to 0 and turn off, •...

  • Page 318: Error Code

    Error code Cause Operation at error occurrence Action (hexadecimal) • The data written is ignored. The setting value is being • The setting cannot be changed until an error After turning off, on, and off Error changed while Default setting reset is performed.
  • Page 319 CHAPTER 11 TROUBLESHOOTING The address where the error occurred is stored in Buffer memory addresses are written in decimal (Intelligent function module device (Un\G )) in this manual. Read the stored value in decimal and refer to the buffer memory list ( Page 44, Section 3.5).

  • Page 320: Alarm Code List

    11.7 Alarm Code List The following table lists alarm codes. The alarm code is stored in all bits of Error code (Un\G0). b12 b11 b8 b7 b4 b3 Alarm types Alarm occurrence An error code is channels (1 to 4 stored to A when an alarm occurs...
  • Page 321 CHAPTER 11 TROUBLESHOOTING Alarm code Operation at alarm Cause Action (hexadecimal) occurrence • The ALM LED turns on. • CH Alert occurrence flag (XnC 06 A Alert 1 has occurred. to XnF) turns on. • CH Alert 1 (b8 of Un\G5 to Un\G8) turns on.
  • Page 322 Remark • The error code is always given priority over the alarm code for being stored in Error code (Un\G0). For that reason, when an alarm occurs during an error, the alarm code is not stored in Error code (Un\G0). Further, when an error occurs during an alarm, the error code is written over the alarm code in Error code (Un\G0).
  • Page 323 CHAPTER 11 TROUBLESHOOTING 11.8 Check the L60TC4 Status The error code and hardware status can be checked by selecting "Module's Detailed Information" of the L60TC4 in the system monitor of the programming tool. (1) Operating the programming tool From [Diagnostics] [System Monitor...] "Main Block", select L60TC4 (2) Module's Detailed Information...

  • Page 324: Hardware Information

    (3) Hardware information On the "Module's Detailed Information" window, click (a) H/W LED information The following information is displayed. Condition for 0001 Item Value Operating normally (same as the RUN LED) DATA ERR A write data error has occurred PID control is being run ALM1 Alert 1 is on ALM2...

  • Page 325: Details Of I/O Signals

    APPENDICES APPENDICES Appendix 1 Details of I/O Signals The following section describes the details of the L60TC4 I/O signals toward the CPU module. The I/O numbers (X/Y) described in Appendix 1 is for the case when the start I/O number of the L60TC4 is set to 0. Appendix 1.1 Input signal (1) Module READY flag (Xn0)
  • Page 326 (2) Setting/operation mode status (Xn1) This signal turns on at the operation mode, off at the setting mode. Setting/operation mode instruction (Yn1) Setting/operation mode status (Xn1) Setting mode at Operation mode Setting mode power-ON (during operation) (after operation) Mode transition During mode shift processing During mode shift processing Executed by the L60TC4...
  • Page 327 APPENDICES (3) Error occurrence flag (Xn2) This flag turns on when errors other than a hardware error occur. After an error occurs and the error code is stored in Error code (Un\G0), this flag turns on. Errors occur under the following conditions. •...

  • Page 328: Mix Control

    (5) CH Auto tuning status (Xn4 to Xn7) This signal turns on when auto tuning of each channel is set by the user or when the L60TC4 performs self- tuning. Auto tuning status Heating- Channel ON/OFF status Standard cooling Mix control control control ON: The auto tuning/self-tuning is being...
  • Page 329 APPENDICES (6) Back-up of the set value completion flag (Xn8) Turning Set value backup instruction (Yn8) on from off starts the writing of the buffer memory data to the non- volatile memory. After the data writing is completed, this flag turns on. Turning Set value backup instruction (Yn8) off from on also turns off this flag.
  • Page 330 (8) Back-up of the set value fail flag (XnA) Turning Set value backup instruction (Yn8) on from off starts the writing of the buffer memory data to the non- volatile memory. This flag turns on when the writing failed. Setting value backup instruction (Yn8) During write to memory...
  • Page 331 APPENDICES (10)CH Alert occurrence flag (XnC to XnF) When an alert occurs, the alert definition is stored in CH Alert definition (Un\G5 to Un\G8), and this flag turns For conditions where this flag turns off, refer to the following. Page 166, Section 8.2.11 (6) The following table lists the partucular flag and buffer memory addresses of alert definitions for each channel.

  • Page 332: Output Signal

    Appendix 1.2 Output signal (1) Setting/operation mode instruction (Yn1) Use this signal to select the setting mode or the operation mode. • OFF: Setting mode • ON: Operation mode Some buffer memory areas can be set only in the setting mode. (a) Buffer memory areas that can be set only in the setting mode The following settings can be changed only when Setting/operation mode instruction (Yn1) is off.
  • Page 333 APPENDICES Buffer memory address Buffer memory area name Reference Process value (PV) scaling lower limit Un\G726 Un\G742 Un\G758 Un\G774 value Page 406, Appendix 2 (81) Process value (PV) scaling upper limit Un\G727 Un\G743 Un\G759 Un\G775 value Derivative action selection Un\G729 Un\G745 Un\G761 Un\G777...
  • Page 334 (4) Set value backup instruction (Yn8) Use this signal to write the buffer memory data to the non-volatile memory. Turning this instruction on from off starts the data writing to the non-volatile memory. For the buffer memory areas whose data is to be backed up, refer to the following. Page 44, Section 3.5 (a) When data writing to the non-volatile memory has completed normally Back-up of the set value completion flag (Xn8) turns on.
  • Page 335 APPENDICES (7) CH PID control forced stop instruction (YnC to YnF) Use this signal to temporarily stop PID control forcibly. (a) Mode when PID control stops The mode depends on the setting of CH Stop mode setting (Un\G33, Un\G65, Un\G97, Un\G129). For details on CH Stop mode setting (Un\G33, Un\G65, Un\G97, Un\G129), refer to the following.

  • Page 336: Details Of The Buffer Memory

    Appendix 2 Details of the Buffer Memory This chapter describes details on the buffer memory of the L60TC4. For buffer memory areas indicated with the icons , or with , the following terms are used, Standard Heating-cooling Common unless otherwise specified. •...
  • Page 337 APPENDICES Buffer memory address Buffer memory area name Reference 2-point sensor compensation gain value Page 395, Appendix 2 Un\G546 Un\G578 Un\G610 Un\G642 (measured value) (65) 2-point sensor compensation gain value Page 395, Appendix 2 Un\G547 Un\G579 Un\G611 Un\G643 (compensation value) (66) Simultaneous temperature rise gradient Page 408, Appendix 2...
  • Page 338 (3) CH Alert definition (Un\G5 to Un\G8) Common Bits corresponding to alerts detected in each channel become 1. b7 b6 b5 b4 b3 b2 b1 b0 Bit data b15 are Bit data from b7 to fixed to 0. b2 are fixed to 0. Target bit number Flag name Alert definition...
  • Page 339 APPENDICES (a) Temperature measurement range The temperature measurement range is as follows. • Input range lower limit - 5% of full scale to Input range upper limit + 5% of full scale A calculation example when CH Input range (Un\G32, Un\G64, Un\G96, Un\G128): 38 (temperature measurement range: -200.0 to 400.0°C) •...
  • Page 340 (4) CH Temperature process value (PV) (Un\G9 to Un\G12) Common The detected temperature value where sensor correction is performed is stored in this buffer memory area. The value to be stored differs depending on the stored value in CH Decimal point position (Un\G1 to Un\G4). Page 334, Appendix 2 (2) •...
  • Page 341 APPENDICES (5) CH Manipulated value (MV) (Un\G13 to Un\G16) Standard Manipulated value for heating (MVh) (Un\G13 to Un\G16) Heating-cooling Manipulated value for cooling (MVc) (Un\G704 to Un\G707) Heating-cooling The result of PID operation based on temperature process value (PV) is stored in these buffer memory areas. The area Un\G13 to Un\G16 are used for heating in the case of the heating-cooling control.
  • Page 342 (6) CH Temperature rise judgment flag (Un\G17 to Un\G20) Standard Heating-cooling This flag is for checking whether the temperature process value (PV) is in the temperature rise completion range or not. The following values are stored in this buffer memory area. •...
  • Page 343 APPENDICES (7) CH Transistor output flag (Un\G21 to Un\G24) Standard Heating transistor output flag (Un\G21 to Un\G24) Heating-cooling Cooling transistor output flag (Un\G712 to Un\G715) Heating-cooling ON/OFF status of transistor output and ON delay output are stored in these flags. In the heating-cooling control, ON/OFF status of transistor output/ON delay output for heating are stored in Un\G21 to Un\G24.
  • Page 344 (8) CH Set value (SV) monitor (Un\G25 to Un\G28) Standard Heating-cooling Set value (SV) of each time unit set in CH Setting change rate limiter time unit setting (Un\G735, Un\G751, Un\G767, Un\G783) is stored in this buffer memory area. ( Page 411, Appendix 2 (89)) The set value (SV) can be monitored in real time.

  • Page 345: Flag Description

    APPENDICES (11)Memory of PID constants read/write completion flag (Un\G31) Standard Heating-cooling This flag is for showing whether the settings of the following buffer memory areas are completed or not. • CH Memory of PID constants read instruction (Un\G62, Un\G94, Un\G126, Un\G158)( Page 377, Appendix 2 (36) •...
  • Page 346 (c) ON/OFF timing for CH Automatic backup setting after auto tuning of PID constants (Un\G63, Un\G95, Un\G127, Un\G159) ( Page 378, Appendix 2 (37)) The following figure shows ON/OFF timing of this flag for CH Automatic backup setting after auto tuning of PID constants (Un\G63, Un\G95, Un\G127, Un\G159).
  • Page 347 APPENDICES (12)CH Input range (Un\G32, Un\G64, Un\G96, Un\G128) Common Select the set value according to temperature sensor, temperature measurement range , output temperature unit (Celsius (°C)/Fahrenheit ( )/digit) and resolution (1/0.1) which are used with the L60TC4. In the case of input from other analog modules (such as an A/D converter module) also, set these values. When the L60TCTT4 or L60TCTT4BW is used and the following thermocouple is selected •...

  • Page 348: Thermocouple Type

    (a) Setting range of the L60TCTT4, L60TCTT4BW The following table lists setting values of CH Input range (Un\G32, Un\G64, Un\G96, Un\G128) and the corresponding thermocouple types. The relationship between temperature unit and setting values is as follows. Setting of CH Input range (Un\G32, Item Un\G64, Un\G96, Un\G128)
  • Page 349 APPENDICES Automatic setting when changing the input range Upper limit Lower limit Celsius Input range setting limiter, setting limiter, Temperature (°C)/ Thermocouple (Un\G32, Process Process measurement Resolution type Fahrenheit Un\G64, Un\G96, alarm upper alarm lower range Un\G128) ( )/digit lower limit value, lower limit value, Process Process...
  • Page 350 Automatic setting when changing the input range Upper limit Lower limit Celsius Input range setting limiter, setting limiter, Temperature (°C)/ Thermocouple (Un\G32, Process Process measurement Resolution Fahrenheit type Un\G64, Un\G96, alarm upper alarm lower range Un\G128) ( )/digit lower limit value, lower limit value, Process Process...
  • Page 351 APPENDICES Remark For the following mode and channel, CH Input range (Un\G32, Un\G64, Un\G96, Un\G128) cannot be set to 201 to 205. If these values are set, a write data error (error code: ) occurs. Mode Corresponding channel Temperature input mode CH1 to CH4 Heating-cooling control (normal mode) CH3, CH4...
  • Page 352 (b) Setting range of the L60TCRT4, L60TCRT4BW The following table lists setting values of CH Input range (Un\G32, Un\G64, Un\G96, Un\G128) and the corresponding platinum resistance thermometer types. Automatic setting when changing the input range Upper limit Lower limit Celsius Platinum Input range setting limiter,...
  • Page 353 APPENDICES Remark For the following mode and channel, CH Input range (Un\G32, Un\G64, Un\G96, Un\G128) cannot be set to 201 to 205. If these values are set, a write data error (error code: ) occurs. Mode Corresponding channel Temperature input mode CH1 to CH4 Heating-cooling control (normal mode) CH3, CH4...
  • Page 354 Buffer memory address Buffer memory area name Reference 2-point sensor compensation offset value Un\G545 Un\G577 Un\G609 Un\G641 Page 394, Appendix 2 (64) (compensation value) 2-point sensor compensation gain value Un\G546 Un\G578 Un\G610 Un\G642 Page 395, Appendix 2 (65) (measured value) 2-point sensor compensation gain value Un\G547 Un\G579...
  • Page 355 APPENDICES (13)CH Stop mode setting (Un\G33, Un\G65, Un\G97, Un\G129) Standard Heating-cooling Set the mode activated at PID control stop. (a) Setting range and action of L60TC4 The following table lists the relationship. : Executed ×: Not executed Action Mode which can be Set value of CH Stop mode setting Temperature...
  • Page 356 (14)CH Set value (SV) setting (Un\G34, Un\G66, Un\G98, Un\G130) Standard Heating-cooling Set the target temperature value of PID control. (a) Setting range The setting range is identical to the temperature measurement range of the set input range. ( Page 345, Appendix 2 (12)) When a value which is out of the setting range is set, a write data error (error code: ) and the following...
  • Page 357 APPENDICES (15)CH Proportional band (P) setting (Un\G35, Un\G67, Un\G99, Un\G131) Standard Heating proportional band (Ph) setting (Un\G35, Un\G67, Un\G99, Un\G131) Heating-cooling Cooling proportional band (Pc) setting (Un\G720, Un\G736, Un\G752, Un\G768) Heating-cooling Set proportional band (P)/heating proportional band (Ph)/cooling proportional band (Pc) to perform PID control. (In the heating-cooling control, set heating proportional band (Ph) to Un\G35, Un\G67, Un\G99, Un\G131.) (a) Setting range Set the value within the following ranges for the full scale of the set input range.
  • Page 358 If the proportional band (P)/heating proportional band (Ph) is set to 0 (0.0%), the auto tuning cannot be performed. To perform the auto tuning, set proportional band (P)/heating proportional band (Ph) to other than 0. For details on the auto tuning function, refer to the following. Page 141, Section 8.2.7 Remark The proportional band (P) is the variation width of deviation (E) necessary for manipulated value (MV) to vary 0% to 100%.
  • Page 359 APPENDICES (16)CH Integral time (I) setting (Un\G36, Un\G68, Un\G100, Un\G132) Common Set integral time (I) to perform PID control. (a) Setting range The setting range is 0 to 3600 (0 to 3600s). (b) In the P control or PD control Set this setting to 0.
  • Page 360 (18)CH Alert set value 1 (Un\G38, Un\G70, Un\G102, Un\G134) Standard Heating-cooling Alert set value 2 (Un\G39, Un\G71, Un\G103, Un\G135) Heating-cooling Standard Alert set value 3 (Un\G40, Un\G72, Un\G104, Un\G136) Standard Heating-cooling Alert set value 4 (Un\G41, Un\G73, Un\G105, Un\G137) Standard Heating-cooling Set temperature values where CH Alert 1 (Un\G5 to Un\G8 of b8) to CH...
  • Page 361 APPENDICES (c) Setting unit The value to be set differs depending on the stored value in CH Decimal point position (Un\G1 to Un\G4). Page 334, Appendix 2 (2)) • No decimal place (0): Set a value in 1°C ( or digit) unit. •...

  • Page 362: Buffer Memory

    (19)CH Upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138) Standard Lower limit output limiter (Un\G43, Un\G75, Un\G107, Un\G139) Standard Heating upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138) Heating-cooling Cooling upper limit output limiter (Un\G721, Un\G737, Un\G753, Un\G769) Heating-cooling In the standard control, set upper limit value/lower limit value for actual output of manipulated value (MV) calculated by the PID operation to an external device.
  • Page 363 APPENDICES (b) Two-position control ( Page 129, Section 8.2.3 (1)) The following table lists Enable/Disable of the setting. Enable/Disable of the setting in the two- Buffer memory position control Upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138) Disable Lower limit output limiter (Un\G43, Un\G75, Un\G107, Un\G139) Heating upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138) Enable Cooling upper limit output limiter (Un\G721, Un\G737, Un\G753, Un\G769)
  • Page 364 (20)CH Output variation limiter setting (Un\G44, Un\G76, Un\G108, Un\G140) Standard Heating-cooling Set the limit of an output variation per 1s to regulate a rapid change of the manipulated value (MV). (a) Setting range The setting range is 0 or 1 to 1000 (0.1%/s to 100.0%/s). When 0 is set, an output variation is not regulated. When the value of the buffer memory is set as follows •...
  • Page 365 APPENDICES (21)CH Sensor correction value setting (Un\G45, Un\G77, Un\G109, Un\G141) Common Set the correction value when measured temperature and actual temperature are different. For details on the sensor compensation function, refer to the following. Page 223, Section 8.3.2 (a) Setting range Set the value within the range -5000 to 5000 (-50.00% to 50.00%) of the full scale of the set input range.
  • Page 366 (23)CH Control output cycle setting (Un\G47, Un\G79, Un\G111, Un\G143) Standard Heating control output cycle setting (Un\G47, Un\G79, Un\G111, Un\G143) Heating-cooling Cooling control output cycle setting (Un\G722, Un\G738, Un\G754, Un\G770) Heating-cooling Set the pulse cycle (ON/OFF cycle) of the transistor output. In the heating-cooling control, the output cycle of the heating control and cooling control can be set individually.
  • Page 367 APPENDICES (b) Default value • When the control output cycle unit selection setting on Switch Setting is set to the cycle of 1s: 30 (30s) • When the control output cycle unit selection setting on Switch Setting is set to the cycle of 0.1s: 300 (30.0s) (24)CH Primary delay digital filter setting (Un\G48, Un\G80, Un\G112, Un\G144)
  • Page 368 (25)CH Control response parameter (Un\G49, Un\G81, Un\G113, Un\G145) Standard Heating-cooling In the simple two-degree-of-freedom PID control, select the response speed to the change of the set value (SV) from the following three levels: Slow, Normal, and Fast. For details on the simple two-degree-of-freedom, refer to the following. Page 153, Section 8.2.8 (a) Setting range Setting...
  • Page 369 APPENDICES (26)CH AUTO/MAN mode shift (Un\G50, Un\G82, Un\G114, Un\G146) Standard Heating-cooling Select whether to calculate the manipulated value (MV) by PID operation or to set it manually by the user. (a) Setting range Setting Set value Description contents Activates the AUTO mode. The manipulated value (MV) calculated by PID operation is AUTO used to calculate the ON time of the control cycle.
  • Page 370 (27)CH MAN output setting (Un\G51, Un\G83, Un\G115, Un\G147) Standard Heating-cooling This buffer memory area is used for setting the manipulated value (MV) in the MAN mode. (a) How to shift the mode Shift the mode by the following buffer memory area. •...
  • Page 371 APPENDICES (28)CH Setting change rate limiter (Un\G52, Un\G84, Un\G116, Un\G148) Standard Heating-cooling Setting change rate limiter (temperature rise) (Un\G52, Un\G84, Un\G116, Un\G148) Standard Heating-cooling Setting change rate limiter (temperature drop) (Un\G564, Un\G596, Un\G628, Un\G660) Standard Heating-cooling Set the change rate of the set value (SV) per a set time unit when the set value (SV) is changed. This setting can regulate a rapid change of the manipulated value (MV).
  • Page 372 (29)CH AT bias setting (Un\G53, Un\G85, Un\G117, Un\G149) Standard Heating-cooling The point set as the set value (SV) in the auto tuning can be rearranged by using this buffer memory area. The auto tuning function determines each PID constant by performing the two-position control toward the set value (SV) and making a temperature process value (PV) hunting.
  • Page 373 APPENDICES (30)CH Forward/reverse action setting (Un\G54, Un\G86, Un\G118, Un\G150) Standard Select whether to use channels in the forward action or reverse action. Select the forward action for the cooling control. Select the reverse action for the heating control. For details on the forward action/reverse action selection function, refer to the following. Page 203, Section 8.2.18 (a) Setting range •...
  • Page 374 (31)CH Upper limit setting limiter (Un\G55, Un\G87, Un\G119, Un\G151) Standard Heating-cooling Lower limit setting limiter (Un\G56, Un\G88, Un\G120, Un\G152) Standard Heating-cooling Upper/lower limit value of the set value (SV) can be set. (a) Setting range The setting range is identical to the temperature measurement range of the set input range. ( Page 345, Appendix 2 (12)) The setting should meet the following conditions.
  • Page 375 APPENDICES (32)CH Heater disconnection alert setting (Un\G58, Un\G90, Un\G122, Un\G154) Standard Heating-cooling Set the set value in heater disconnection detection and off-time current error detection in percentage of the reference heater current value. For details on the heater disconnection detection function, refer to the following. Page 215, Section 8.2.24 For details on the output off-time current error detection function, refer to the following.
  • Page 376 (33)CH Loop disconnection detection judgment time (Un\G59, Un\G91, Un\G123, Un\G155) Standard Errors such as disconnection of resistors, malfunction of an external controller, and errors of the control system due to troubles such as disconnection of the sensor can be detected by the loop disconnection detection function. If temperature does not change by 2°C ( ) or more in the Loop disconnection detection judgment time, a loop disconnection is detected.
  • Page 377 APPENDICES (34)CH Loop disconnection detection dead band (Un\G60, Un\G92, Un\G124, Un\G156) Standard To prevent an error alarm of Loop disconnection detection, set a non-alert band (temperature band in which the loop disconnection is not detected) where the set value (SV) is at the center. Temperature process value (PV) Loop disconnection detection dead band...
  • Page 378 (35)CH Unused channel setting (Un\G61, Un\G93, Un\G125, Un\G157) Standard Heating-cooling Set this buffer memory area when treating channels that do not control temperature or are not connected with temperature sensors as "Unused". Setting them as unused channels stops detection of an alert. For details on the unused channel setting, refer to the following.
  • Page 379 APPENDICES (36)CH Memory of PID constants read instruction (Un\G62, Un\G94, Un\G126, Un\G158) Standard Heating-cooling PID constants are read from a non-volatile memory and stored in the buffer memory by using this instruction. Setting this buffer memory area to Requested (1) stores the value backed up in the non-volatile memory in the buffer memory.
  • Page 380 (37)CH Automatic backup setting after auto tuning of PID constants (Un\G63, Un\G95, Un\G127, Un\G159) Standard Heating-cooling The set value to be stored in the buffer memory is automatically backed up to a non-volatile memory by using this function. By reading the set value that is backed up, when the power is turned on from off or the CPU module is released from the reset status, another auto tuning can be omitted.
  • Page 381 APPENDICES (38)Alert dead band setting (Un\G164) Standard Heating-cooling This setting is for using the alarm function. For details on the alert function, refer to the following. Page 157, Section 8.2.11 (a) Setting range Set the value within the range 0 to 100 (0.0% to 10.0%) of the full scale of the set input range. ( Page 345, Appendix 2 (12)) When the value of the buffer memory is set as follows...
  • Page 382 (40)Heater disconnection/output off-time current error detection delay count (Un\G166) Standard Heating-cooling Set the limit value for consecutive heater disconnection detections and output off-time current error detections so that the errors exceeding the limit value triggers an alert judgment. For details on the heater disconnection detection function, refer to the following. Page 215, Section 8.2.24 For details on the output off-time current error detection function, refer to the following.
  • Page 383 APPENDICES (42)Temperature rise completion soak time setting (Un\G168) Standard Heating-cooling Set the delay time for CH Temperature rise judgment flag (Un\G17 to Un\G20) ( Page 340, Appendix 2 (6)) to be set to Within temperature rise completion range (1). (a) Setting range The setting range is 0 to 3600 (min).
  • Page 384 (45)Transistor output monitor ON delay time setting (Un\G175) Standard Heating-cooling Set the delay time of the ON delay output flag. Set this buffer memory area to perform the heater disconnection detection with an input module. For ON delay output flag, refer to the following. Page 341, Appendix 2 (7) For details on the ON delay output function, refer to the following.
  • Page 385 APPENDICES (47)CH Manipulated value (MV) for output with another analog module (Un\G177 to Un\G180) Standard Manipulated value of heating (MVh) for output with another analog module (Un\G177 to Un\G180) Heating-cooling Manipulated value of cooling (MVc) for output with another analog module (Un\G708 to Un\G711) Heating-cooling The values stored in the following buffer memory areas are converted for other analog modules such as a D/A...
  • Page 386 (48)Resolution of the manipulated value for output with another analog module (Un\G181) Standard Heating-cooling Set the resolution of the following buffer memory areas. ( Page 339, Appendix 2 (5)) • CH Manipulated value (MV) (Un\G13 to Un\G16) • CH Manipulated value for heating (MVh) (Un\G13 to Un\G16) •...
  • Page 387 APPENDICES (50)Control switching monitor (Un\G183) Common The setting contents of the mode selection set on Switch Setting are stored in this buffer memory area. The mode in operation can be confirmed. The following table lists the stored value and the contents. Mode Stored value Control mode...
  • Page 388 (52)CH Alert 1 mode setting (Un\G192, Un\G208, Un\G224, Un\G240) Standard Heating-cooling Alert 2 mode setting (Un\G193, Un\G209, Un\G225 Un\G241) Heating-cooling Standard Alert 3 mode setting (Un\G194, Un\G210, Un\G226, Un\G242) Standard Heating-cooling Alert 4 mode setting (Un\G195, Un\G211, Un\G227, Un\G243) Standard Heating-cooling Set the alert mode of alert 1 to 4.
  • Page 389 APPENDICES Alert mode Setting range of alert set value value Upper limit deviation alert with standby (using the set value (SV)) -(full scale) to +(full scale) Lower limit deviation alert with standby (using the set value (SV)) Upper lower limit deviation alert with standby (using the 0 to +(full scale) set value (SV)) Upper limit deviation alert with standby (second time)
  • Page 390 (54)CH Process alarm lower lower limit value (Un\G197, Un\G213, Un\G229, Un\G245) Temperature Input Process alarm lower upper limit value (Un\G198, Un\G214, Un\G230, Un\G246) Temperature Input Process alarm upper lower limit value (Un\G199, Un\G215, Un\G231, Un\G247) Temperature Input Process alarm upper upper limit value (Un\G200, Un\G216, Un\G232, Un\G248) Temperature Input...
  • Page 391 APPENDICES (55)CH Rate alarm alert output enable/disable setting (Un\G201, Un\G217, Un\G233, Un\G249) Temperature Input Set whether to enable or disable alert output of rate alarm. For details on the rate alarm, refer to the following. Page 122, Section 8.1.3 (2) (a) Setting range •...
  • Page 392 (57)CH Rate alarm upper limit value (Un\G203, Un\G219, Un\G235, Un\G251) Temperature Input Rate alarm lower limit value (Un\G204, Un\G220, Un\G236, Un\G252) Temperature Input Set the rate alarm upper limit value and lower limit value. (a) Setting range The setting is -32768 to 32767. (b) Setting unit The value to be set differs depending on the stored value in CH Decimal point position (Un\G1 to Un\G4).
  • Page 393 APPENDICES (59)CT CT input channel assignment setting (Un\G264 to Un\G271) Standard Heating-cooling Set the assignment of each current sensor (CT) input to the channels. (a) Supported modules • L60TCTT4BW • L60TCRT4BW (b) Correspondence between CT input terminal and buffer memory address CT input terminal Buffer memory address Un\G264...
  • Page 394 (60)CT CT selection (Un\G272 to Un\G279) Standard Heating-cooling Select the current sensor to be connected to each current sensor (CT) input. (a) Supported modules • L60TCTT4BW • L60TCRT4BW (b) Setting range • 0: When CTL-12-S36-8 is used (0.0 to 100.0A) •...
  • Page 395 APPENDICES When CT ratio setting is used (0.0 to 100.0A) (2) is selected, the setting of CT CT ratio setting (Un\G288 to Un\G295) is enabled. In advance, set CT CT ratio setting (Un\G288 to Un\G295) corresponding to the sensor to be connected. After that, select When CT ratio setting is used (0.0 to 100.0A) (2).
  • Page 396 (63)CH 2-point sensor compensation offset value (measured value) (Un\G544, Un\G576, Un\G608, Un\G640) Common The measured value of temperature corresponding to the offset value of the 2-point sensor compensation is stored in this buffer memory area. The value to be stored differs depending on the stored value in CH Decimal point position (Un\G1 to Un\G4).
  • Page 397 APPENDICES (65)CH 2-point sensor compensation gain value (measured value) (Un\G546, Un\G578, Un\G610, Un\G642) Common The measured value of temperature corresponding to the gain value of the 2-point sensor compensation is stored in this buffer memory area. The value to be stored differs depending on the stored value in CH Decimal point position (Un\G1 to Un\G4).
  • Page 398 (67)CH 2-point sensor compensation offset latch request (Un\G548, Un\G580, Un\G612, Un\G644) Common This request is for storing temperature process value (PV) as 2-point sensor compensation offset value to the following buffer memory area. • CH 2-point sensor compensation offset value (measured value) (Un\G544, Un\G576, Un\G608, Un\G640) Page 394, Appendix 2 (63)) For details on the 2-point sensor compensation function, refer to the following.
  • Page 399 APPENDICES (69)CH 2-point sensor compensation gain latch request (Un\G550, Un\G582, Un\G614, Un\G646) Common This is a request for storing temperature process value (PV) as 2-point sensor compensation gain value to the following buffer memory area. • CH 2-point sensor compensation gain value (measured value) (Un\G546, Un\G578, Un\G610, Un\G642) Page 395, Appendix 2 (65)) For details on the 2-point sensor compensation function, refer to the following.
  • Page 400 (71)CH AT simultaneous temperature rise parameter calculation flag (Un\G573, Un\G605, Un\G637, Un\G669) Standard The status when simultaneous temperature rise AT (auto tuning) calculates simultaneous temperature rise parameter is stored in this buffer memory area. • 0: OFF • 1: ON b3 b2 b1 b0 Bit data from b15 to b3 are fixed to 0.
  • Page 401 APPENDICES (72)CH Self-tuning setting (Un\G574, Un\G606, Un\G638, Un\G670) Standard Perform operation setting of self-tuning with this buffer memory area. For details on the self-tuning function, refer to the following. Page 175, Section 8.2.15 (a) Setting range • 0: Do Not Run the ST •...
  • Page 402 (73)CH Self-tuning flag (Un\G575, Un\G607, Un\G639, Un\G671) Standard The execution status of self-tuning can be monitored in this buffer memory area. For details on the self-tuning function, refer to the following. Page 175, Section 8.2.15 b10 b9 b8 b7 b2 b1 b0 Fixed to 0 Fixed to 0 The following contents are stored in each bit.
  • Page 403 APPENDICES Condition on which value turns to 1 Condition on which value turns to 0 Flag name (ON) (OFF) This flag is set to 1 (ON) when simultaneous Simultaneous temperature rise temperature rise parameter cannot be parameter error status calculated by self-tuning. This flag is set to 1 (ON) when either of the following operation is performed during the self-tuning.
  • Page 404 (74)CH Temperature process value (PV) for input with another analog module (Un\G689 to Un\G692) Standard Heating-cooling Digital input value of the current/voltage converted in another analog module (such as A/D conversion module) on system can be used as a temperature process value (PV). Store digital input values of current/voltage converted by another analog module (such as A/D conversion module) in this area.
  • Page 405 APPENDICES (76)CH Temperature conversion setting (Un\G695 to Un\G697) Heating-cooling In the heating-cooling control (normal mode) or the mix control (normal mode), only the temperature measurement can be performed using temperature input terminals of unused channels. The following table lists the settable buffer memory addresses for each control mode selection. Control mode Heating- Heating-...
  • Page 406 (77)Cooling method setting (Un\G719) Heating-cooling Set the method for the cooling control in the heating-cooling control. Select the suitable cooling method for cooling characteristics of devices. The following figure shows the channel assignment of the buffer memory area. b8 b7 b4 b3 For details on the cooling method setting function, refer to the following.
  • Page 407 APPENDICES (79)CH Manual reset amount setting (Un\G724, Un\G740, Un\G756, Un\G772) Standard Heating-cooling Set the amount of the proportional band (P) to be moved. For details on the manual reset function, refer to the following. Page 137, Section 8.2.4 (a) Setting range Set the value within the range of -1000 to 1000 (-100.0% to 100.0%) for the full scale of the set input range.
  • Page 408 (81)CH Process value (PV) scaling lower limit value (Un\G726, Un\G742, Un\G758, Un\G774) Common Process value (PV) scaling upper limit value (Un\G727, Un\G743, Un\G759, Un\G775) Common Set the upper limit value/lower limit value of the temperature process value (PV) scaling function. For details on the temperature process value (PV) scaling function, refer to the following.
  • Page 409 APPENDICES (83)CH Derivative action selection (Un\G729, Un\G745, Un\G761, Un\G777) Standard Heating-cooling Select the type of derivative action. Dynamic performance can be improved by selecting the suitable derivative action for the fixed value action and the ramp action. For details on the derivative action selection function, refer to the following.
  • Page 410 (85)CH Simultaneous temperature rise gradient data (Un\G731, Un\G747, Un\G763, Un\G779) Standard Set Simultaneous temperature rise gradient data (temperature rising per minute). For details on the simultaneous temperature rise function, refer to the following. Page 190, Section 8.2.17 (a) Setting range The setting range is 0 to (the upper limit of the temperature measurement range of the set input range).
  • Page 411 APPENDICES (87)CH Simultaneous temperature rise AT mode selection (Un\G733, Un\G749, Un\G765, Un\G781) Standard Select mode of the auto tuning. For details on the auto tuning function, refer to the following. Page 141, Section 8.2.7 For details on the simultaneous temperature rise function, refer to the following. Page 190, Section 8.2.17 (a) Setting range •...
  • Page 412 (88)CH Simultaneous temperature rise status (Un\G734, Un\G750, Un\G766, Un\G782) Standard The execution state of the simultaneous temperature rise is monitored. The following values are stored in this buffer memory area. • 0: Simultaneous temperature rise not in process • 1: Simultaneous temperature rise in process During control by the simultaneous temperature rise function, Simultaneous temperature rise in process (1) is stored in this buffer memory area.
  • Page 413 APPENDICES (89)CH Setting change rate limiter time unit setting (Un\G735, Un\G751, Un\G767, Un\G783) Standard Heating-cooling Set the time unit of setting change rate limiter. For details on the setting change rate limiter time unit setting function, refer to the following. Page 155, Section 8.2.10 (a) Setting range •...
  • Page 414 (90)Peak current suppression control group setting (Un\G784) Standard Set the target channels for the peak current suppression function and the gap of the control output cycle between channels. b8 b7 b4 b3 For details on the peak current suppression function, refer to the following. Page 185, Section 8.2.16 (a) Setting range •...
  • Page 415 APPENDICES (91)Sensor compensation function selection (Un\G785) Common Select the method of the sensor correction for each channel. b8 b7 b4 b3 For details on the sensor compensation function, refer to the following. Page 223, Section 8.3.2 (a) Setting range • 0 : 1-point sensor compensation (standard) •...
  • Page 416 (93)Function extension bit monitor (Un\G787) Common The following settings configured on Switch Setting are stored. • "Auto-setting at Input Range Change" • "Setting Change Rate Limiter Setting" • "Control Output Cycle Unit Selection Setting" For details on Switch Setting, refer to the following. Page 108, Section 7.2 The following figure and table show how the setting is stored.
  • Page 417 APPENDICES (95)Latest address of error history (Un\G1279) Common The latest address of error history is stored. For details on the error history function, refer to the following. Page 237, Section 8.3.5 (96)Error history 1 to 16 (Un\G1280 to Un\G1407) Common Errors and alarms occurred in the module are recorded up to 16.
  • Page 418 Appendix 3 How to Check the Serial Number and Function Version For details on how to check the serial number and function version, refer to the following. MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) MELSEC-L CC-Link IE Field Network Head Module User's Manual...

  • Page 419: Functional Comparison

    APPENDICES Appendix 4 Differences with MELSEC-Q series Modules Appendix 4.1 Differences with temperature control modules This section describes the differences in functions and programming methods between the MELSEC-Q series temperature control modules (Q64TCTTN, Q64TCTTBWN, Q64TCRTN, Q64TCRTBWN) and the L60TC4. (1) Functional comparison (a) Added functions The following table lists the functions added in the L60TC4.

  • Page 420: Program Compatibility

    (2) Program compatibility Programs used in the MELSEC-Q series temperature control modules (Q64TCTTN, Q64TCTTBWN, Q64TCRTN, Q64TCRTBWN) can be used with the L60TC4. (a) I/O signal Although some I/O numbers of the L60TC4 have different names from those of the MELSEC-Q series temperature control modules, they have the same function and are compatible with each other.

  • Page 421: When Using Gx Developer

    APPENDICES Appendix 5 When Using GX Developer This section describes how to configure the setting of the L60TC4 using GX Developer. Appendix 5.1 I/O assignment and intelligent function module switch setting Configure the setting on the following windows when using GX Developer. Window name Application I/O assignment...

  • Page 422: Intelligent Function Module Switch Setting

    (2) Intelligent function module switch setting Configure the setting on "Switch Setting" in "PLC parameter". Parameter [PLC parameter] [I/O assignment] Click Select "HEX.". Item Setting item Control output HOLD/CLEAR setting Setting value Output setting Switch 1 CH4 CH3CH2 CH1 CLEAR Other than 0 HOLD Mode selection...
  • Page 423 APPENDICES Item Setting item Function extension bit specification, sampling cycle selection b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 Extended function bit setting Fixed to 0 Fixed to 0 b0: Automatic setting when the input range is changed 0: Disable 1: Enable...

  • Page 424: Initial Setting

    Appendix 5.2 Initial setting and auto refresh setting The initial setting and auto refresh setting cannot be configured when GX Developer is used. Use the program instead. (1) Initial setting Configure the initial setting using the program. ( Page 250, CHAPTER 10) (2) Auto refresh setting To access the buffer memory using the program, perform one of the following methods.

  • Page 425: External Dimensions

    APPENDICES Appendix 6 External Dimensions The following shows the external dimensions of the L60TC4. (1) L60TCTT4 DIN rail center 28.5 (Unit: mm) (2) L60TCTT4BW DIN rail center 57.0 (Unit: mm)
  • Page 426 (3) L60TCRT4 DIN rail center 28.5 (Unit: mm) (4) L60TCRT4BW DIN rail center 57.0 (Unit: mm)
  • Page 427 APPENDICES Memo...
  • Page 428 INDEX 0 to 9 ..223,413 ..151 1-point sensor compensation (standard) Checking the completion of auto tuning ....413 .
  • Page 429 Control output cycle setting (Un\G47, Un\G79, PID control forced stop instruction (YnC to YnF) ..... . 364 ........333 Un\G111, Un\G143) Control response parameter (Un\G49, Un\G81, Primary delay digital filter setting (Un\G48, Un\G80,...
  • Page 430 Temperature process value (PV) (Un\G9 to Reference heater current value (Un\G280 to ......338 .
  • Page 431 ......29 Heater disconnection correction function selection Module joint levers ......381 .
  • Page 432 ....79 Procedure before operation Simultaneous temperature rise AT disable status ... 177 .
  • Page 433 ......327 Unused channel ....106 Unused channel setting .

  • Page 434: Print Date

    Japanese manual version SH-080999-A This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.

  • Page 435: Warranty

    6. Failure caused by reasons unpredictable by scientific technology standards at time of shipment from Mitsubishi. 7. Any other failure found not to be the responsibility of Mitsubishi or that admitted not to be so by the user. 2. Onerous repair term after discontinuation of production (1) Mitsubishi shall accept onerous product repairs for seven (7) years after production of the product is discontinued.
  • Page 436 Microsoft, Windows, Windows NT, and Windows Vista are registered trademarks of Microsoft Corporation in the United States and other countries. Pentium is a trademark of Intel Corporation in the United States and other countries. Ethernet is a trademark of Xerox Corporation. The SD logo and SDHC logo are trademarks.
  • Page 440 Phone: +380 (0)44 / 490 92 29 Fax: +380 (0)44 / 248 88 68 Mitsubishi Electric Europe B.V. /// FA - European Business Group /// Gothaer Straße 8 /// D-40880 Ratingen /// Germany Tel.: +49(0)2102-4860 /// Fax: +49(0)2102-4861120 /// info@mitsubishi-automation.com /// www.mitsubishi-automation.com...

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