Omron E5AK User Manual
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Omron E5AK User Manual

Omron E5AK User Manual

Digital controller
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E5AK
Digital Controller
User's Manual
Cat. No. H083-E1-03

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  • Page 1 E5AK Digital Controller User's Manual Cat. No. H083-E1-03...
  • Page 2 About this manual E OMRON, 1996 (1) All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or trans- mitted, in any form, or by any means, mechanical, electronic, photocopying, recording, recording, or other- wise, without the prior written permission of OMRON.
  • Page 3 Conventions Used in This Manual J Meanings of Abbreviations Sometimes the following abbreviations are used in parameter names, figures and in text explanations. These abbreviations mean the following. Abbreviation Term Process value Set point Remote set point Local set point...
  • Page 4 The following conventions are used to indicate and classify precautions in this manual. Al- ways heed the information provided with them. Failure to heed precautions can result in inju- ry to people or damage to the product.
  • Page 5 J How this Manual is Organized Purpose Title Description D Learning about the gen- Chapter 1 Introduction This chapter describes the fea- tures of the E5AK, names of eral features of the E5AK parts, and typical functions. D Setting up the E5AK...
  • Page 6 Pay Attention to the Following when Installing this Controller F If you remove the controller from its case, never touch nor apply shock to the elec- tronic parts inside. F Do not cover the area around the E5AK. (Ensure sufficient space around the control- ler to allow heat radiation.)
  • Page 7 1--1 This chapter introduces the E5AK. First-time users should read this chapter with- out fail. For details on how to use the controller and parameter settings, see Chapters 2 onwards. 1.1 Names of parts ......... .

  • Page 8: Table Of Contents

    ..... . 8--1 This chapter describes how to find out and remedy the cause if the E5AK does not function properly.

  • Page 9: Table Of Contents

    INTRODUCTION This chapter introduces the E5AK. First-time users should read this chapter without fail. For details on how to use the controller and parameter settings, see Chapters 2 onwards. 1.1 Names of parts ......

  • Page 10: Names Of Parts

    CHAPTER 1 INTRODUCTION 1.1 Names of parts J Main parts Terminals P 2-8 Rear case Front panel This page J Front panel Bar graph No.1 display Operation indicators No.2 display OUT1 OUT2 MANU SUB1 SUB2 SUB1 SUB2 OUT1 OUT2 STOP...

  • Page 11: About The Displays

    Each press of this key switches between the auto and manual opera- tions. The functions of this key change according to how long it is pressed. If the key is pressed for less than one second, the parameters are switched.

  • Page 12: Input And Output

    • The following input sensors can be connected for temperature input: Thermocouple: K, J, T, E, L, U, N, R, S, B, W, PLII Platinum resistance thermometer: JPt100, Pt100 • The following currents can be connected for current input: 4 to 20 mA, 0 to 20 mA •...

  • Page 13: Output

    Assign these output functions to control output 1, control output 2, auxiliary output1, and auxiliary output2. However, note that as control output 1 is used as the open output and control output 2 is used as close output on a position-proportional type controller (E5AK-PRR2), control outputs 1 and 2 cannot be used as assignment destinations.
  • Page 14 CHAPTER 1 INTRODUCTION Control outputs 1 and 2 are used depending on the differences in con- trol method as follows. Control Output 1/ Control Method Model Control Output 2 Standard control E5AK-AA2 AC100-240 Control output (heat) / E5AK-AA2 AC/DC24 Alarm, etc.,...

  • Page 15: Specifications

    F Option mode This is the mode for setting option functions. You can select this mode only when the option unit is set in the controller. In this mode, you can 1--7...

  • Page 16: Selecting Modes

    1 second min. Calibration mode F Menu display • To select the menu display in any of the above modes (excluding the protect mode and manual mode), press the key for 1 second mini- mum. If you select the desired mode using the...

  • Page 17: Selecting Parameters

    OFF. When another mode is selected while in these modes, reset is canceled. F Protect mode • To set the controller to the protect mode or to return to the level 0 mode from the protect mode, press the key and key for 1 se- cond minimum simultaneously.

  • Page 18: About The Communications Function

    1.4 About the Communications Function The E5AK can be provided with a communications function that allows you to check and set controller parameters from a host computer. If the communications function is required, add on the communications unit. For details on the communications function, refer to Chapter 6.

  • Page 19: About Calibration

    The E5AK controller is calibrated before shipment from the factory. So, the user need not calibrate the E5AK controller during regular use. However, if the E5AK controller must be calibrated by the user, use the parameters provided for user to calibrate temperature input, analog input (voltage, current) and transfer output.
  • Page 20 CHAPTER 1 INTRODUCTION 1--12...
  • Page 21 CHAPTER CHAPTER 2 PREPARATIONS This chapter describes the operations you should carry out before turning the E5AK ON. 2.1 Setting up ......
  • Page 22 (2) Draw out the internal mechanism towards you holding both sides of the front panel. Fixing Screw for Tighten this screw by a torque of 0.3 to 0.5 N⋅m, or approx. 3 to 5 kgf⋅cm. Front Panel 2--2...
  • Page 23 2.1 Setting up J Setting up the output unit F Before setup • Check the type of the output unit you are about to set up. • For details on types of output unit and main specifications, see page 2-9.
  • Page 24 (1) Remove the power board and option boards in the order shown in the following diagram. (2) Insert the option units into the sockets for options 1 to 3. The fol- lowing diagram shows the relationship between option units and mounting positions.
  • Page 25 J Panel cutout 110 mm min Unit (mm) 120 mm min +0.8 • Recommended panel thickness is 1 to 8 • Maintain the specified vertical and hori- zontal mounting space between each +0.8 controller. Controllers must not be closely mounted vertically or horizontally.
  • Page 26 J Mounting (1) Insert the E5AK controller into the mounting hole in the panel. (2) Fit the mounting bracket (accessory) into the fixing slots on the top and bottom of the rear case. (3) Tighten the mounting bracket screws alternately a little at a time until the ratchet start to slide.
  • Page 27 • Use E53-COV09 for terminals 1 to 10, and E53-COV08 for terminals 11 to 33. • Fasten the terminal covers as follows by using the snap pins. E5AK E53-COV0809 • To remove the terminal covers, pull the edges of the snap pins. 2--7...
  • Page 28 EV1 to 4 : Event inputs PTMR : Potentiometer J Precautions • Use ducts to separate input leads and power lines in order to protect the controller and its lines from external noise. when wiring • We recommend using solderless terminals when wiring the controller.
  • Page 29 2.3 Wiring Terminals F Sensor input • Connect the sensor input to terminal Nos. 11 to 14 and 33 as follows according to the input type. 31 32 Thermocouple Platinum Voltage input Current input resistance thermometer F Control output • Terminal Nos. 7 and 8 are for control output 1 (OUT1), and terminal Nos.
  • Page 30 • Connect an input (RSP) to be used as the remote SP to terminal Nos.21 and 22. 31 32 • Only 4 to 20 mA inputs can be connected. Connect the input as fol- lows: 4 to 20 mA About the power...
  • Page 31 Permissible load impedance: 600 Ω max., Resolution: Approx. 2600 F Communications • Terminal Nos.18 to 20, 31 and 32 can be used only on controllers hav- ing a communications units (E53-AK01/02/03). • For details on wiring, see Chapter 6, Using the Communications Function.
  • Page 32 CHAPTER 2 PREPARATIONS 2--12...
  • Page 33 CHAPTER 3 BASIC OPERATION CHAPTER CHAPTER 3 BASIC OPERATION This chapter describes an actual example for understanding the basic operation of the E5AK. 3.1 Convention Used in this Chapter ..3.2 Setting Input Specifications .
  • Page 34 CHAPTER 3 BASIC OPERATION 3.1 Convention Used in this Chapter This chapter describes basic E5AK operations such as how to set up parameters, start and stop operation, and adjusting control operation. For more complex control examples, refer to Chapter 4 Applied Opera- tion and Chapter 5 Parameters.
  • Page 35 This description assumes that the controller is operated under the fol- lowing conditions. • A humidity sensor of output 4 to 20 mA is connected to the controller. The measuring range of the humidity sensor is set to 10 to 95%.
  • Page 36 CHAPTER 3 BASIC OPERATION 3.2 Setting Input Specifications J Input type • Set the type No. (0 to 21) in the “input type” parameter. The factory setting is “2: K1 (thermocouple).” • For details on input types and setting ranges, see page 5-26.
  • Page 37 “decimal point” = “1” (1) Select the menu display, and select [ ] (setup mode) using the keys. For details on selecting the menu display, see page 1-8. 1 second min. (2) Press the key to enter the setup mode. The top parameter in the setup mode [ ] “input type”...
  • Page 38 Error 3; RSP input error With control output (cool), the conditions for switching from standard control to heating and cooling control are reached when the output function is assigned at the cooling side during heating and cooling control. In other words, heating and cooling control is carried out when con- trol output (cool) is assigned, and standard control is carried out when output is not assigned.
  • Page 39 (setup mode). J Control period • When the output unit is pulse output such as relay output, set the pulse output cycle (control period). Though a shorter pulse period provides better control performance, the control period should be set taking the life expectancy of the output unit into consideration when the output unit is relay.
  • Page 40 [ ] (“control output 1 assignment” parameter) is displayed. The parameter default is [ (4) As the setting in this example is to be left as it is, press the key. The display changes to [ ] (“control output 2 assignment”...
  • Page 41 3.4 Setting Alarm Type 3.4 Setting Alarm Type • Three alarm outputs are supported: alarms 1 to 3. Of these, only the alarm assigned as the output can be used. • Alarm output conditions are determined according to the combina- tion of the “alarm type”, “alarm value”...
  • Page 42 • Alarm type and close in alarm (normally open)/open in alarm (nor- mally close) can be set independently for each alarm. • Close in alarm/open in alarm is set in the “alarm 1 to 3 open in alarm” parameters (setup mode). Factory setting is [ ] “close in...
  • Page 43 1 second min. until “10.0” is displayed. About the Decimal The decimal point of the alarm value conforms to the setting of the “decimal Point of the Alarm point” parameter (setup mode). In this example, the “decimal point” parameter Value is set to “1”.
  • Page 44 When set to “3”, only level 0 and 1 modes can be selected. • When this parameter is set to “4” to “6”, operations in only the level 0 mode can be selected, and the mode is not displayed on the menu dis- play.
  • Page 45 In an open status, only control output 1 is ON. In a close status, only control output 2 is ON. In a hold status, both control outputs 1 and 2 are OFF. Factory-set to “hold.”...
  • Page 46 CHAPTER 3 BASIC OPERATION 3.7 Adjusting Control Operation J Changing the set • You can change the set point in the “set point” parameter (level 0 mode). point • However, note that you cannot change the set point when the “securi- ty”...
  • Page 47 F Position-proportional type • When a potentiometer is connected to the controller, the process value is displayed on the No.1 display, and the valve opening is displayed on the No.2 display. The valve opening is also displayed on the bar graph in 10% increments.
  • Page 48 ] (“AT cancel”). F 40%AT In order to set the limit cycle of MV change width to 40%, select 40%AT to execute auto-tuning with fluctuations in the process value kept to a minimum. However, note that auto-tuning takes longer to execute compared with 100%AT.
  • Page 49 PID parameters are set in the “proportional band” (P), “integrated time” (I) and “derivative time” (D) parameters (level 1 mode). For details on the setting ranges of these parameters, see chapter 5 Level 1 Mode (page 5-13). 3--17...
  • Page 50 CHAPTER 3 BASIC OPERATION 3--18...
  • Page 51 CHAPTER 4 APPLIED OPERATION This chapter describes each of the parameters required for making full use of the features of the E5AK. Read this chapter while referring to the parameter descriptions in chapter 5. 4.1 Selecting the Control Method ... .
  • Page 52 F Dead band The dead band is set with the set point as its center. The dead band width is the set value of the “dead band” parameter (level 1 mode). Set- ting a positive value produces a dead band, while setting a negative value produces an overlap band.
  • Page 53 • The monitored valve opening is displayed on the bar graph in 10% increments. F Manipulated vari- • Open, close or hold can be selected as output at stop or PV error. Set able at stop/PV these outputs in the “manipulated variable at stop” or “manipulated error variable at PV error”...
  • Page 54 • In standard control (heating or cooling control), hysteresis can be set only for the heating side. Hysteresis (heat) Set point • In heating and cooling control, a dead band can be set. So, 3-position control is made possible. Dead band Hysteresis (heat)
  • Page 55 The upper limit is set for the heating side (positive value), and the lower limit is set for the cooling side (negative value) as shown in the follow- ing figure.
  • Page 56 However, note that when the set point limiter is reset, the set point is forcibly changed to the upper-or lower-limit value of the set point limiter if the set point is out of the limiter range. Also, when the input type, temperature unit and scaling (sensor) range are changed, set point limiter is forcibly reset to the scaling (sensor) range.
  • Page 57 “run” is switched to from “stop,” process value may reach the set point after SP ramp in the same way as when the set point is changed. In this case, operation is carried out with the process value regarded as the set point before the change was made.
  • Page 58 3 and 4 for the designated number. • Other functions are assigned to event inputs 1 to 4 not used for the mul- ti-SP function according to the setting of the “event input assignment 1 to 4”...
  • Page 59 Run/Stop J Multi-SP • Set points 0 to 3 are set as the set point according to event input. However, note that these parameters can not be set when the mul- ti-SP function is not selected. The following table shows the relation- ship between event inputs and set points 0 to 3.
  • Page 60 • This function is enabled only when the “SP mode enable” parameter (option mode) is set to “ON”. • When event input is set to “ON”, the remote SP (RSP) is taken as the set point, and the “RSP” LED lights. When event input is set to “OFF”, the local SP (LSP) is taken as the set point.
  • Page 61 4.4 How to Use the Remote SP 4.4 How to Use the Remote SP • Taking a remote SP input (4 to 20 mA) as the set point is referred to as the “remote SP” function. The remote SP function is enabled only when the “remote SP (RSP) enable”...
  • Page 62 SP tracking function is enabled. If this function is disabled, the SP will be switched to “LSP1”. • When the local SP is switched to the remote SP , the SP ramp will operate if the SP ramp function is enabled.
  • Page 63 • To enable the HBA latch function, set the “HBA latch” parameter to “ON”. J Operating • Turn the heater power supply ON at the same time as or before turn- ing the E5AK power supply ON. If the heater power supply is turned conditions ON after turning the E5AK power supply On, the heater burnout alarm is output.
  • Page 64 • Set the current value at burnout when two or more heaters are con- nected to the CT to the value at the time that the heater having the smallest current value burns out (the value when one of the heaters burns out with all heaters at the same current).
  • Page 65 LBA detection width, and LBA output remains OFF. • If the heater burns out at the point shown in the above figure, the process value “decreases.” Accordingly, it is judged that “the process value is not changing in the increasing direction” at the 2nd judg- ment timing and the LBA output becomes ON.
  • Page 66 (1) Set output to maximum. time (2) Measure the time it takes for the input change width to reach the LBA detection width (default: 0.2 % full-scale). (3) Take a value twice that of the measurement time as the LBA detec- tion time.
  • Page 67 4.7 How to Use Transfer Output • When using transfer output, add on the communications unit (E53-AKF). F Transfer output • You can select the following data items in the “transfer output type” type parameter (option mode) as the transfer outputs: Set point...
  • Page 68 • If “input type”, “scaling upper/lower limit”, “SP limitter upper/lower limit”, or “_C/_F selection” parameters is changed when “set point”, “set point during SP ramp”, or “process value” parameter is selected, each of the “transfer output upper limit” and “transfer output lower limit”...
  • Page 69 CHAPTER 5 PARAMETERS CHAPTER CHAPTER 5 PARAMETERS This chapter describes the parameters of the E5AK. Use this chapter as a reference guide. Conventions Used in this Chapter ... . Protect Mode .
  • Page 70 On the E5AK controller, only parameters that can be used are displayed. These parameters are displayed only when the “Conditions of Use” on the right of the parameter heading are satisfied. However, note that the settings of protected parameters are still valid, and are not displayed regardless of the conditions of use.
  • Page 71 Level 1 Level 0 • When this parameter is set to “4” to “6”, operations in only the level 0 mode can be selected, and the mode is not displayed on the menu display. • When this parameter is set to “5”, only the “PV/SP” parameter in the level 0 mode can be used.
  • Page 72 CHAPTER 5 PARAMETERS Protect Mode [A/M] key protect • Invalidate the function of the key. In other words, you cannot switch between the auto and manual operations by key operation. Function • [ key protect ON • [ key protect canceled •...
  • Page 73 No.1 displayed, and the valve opening is dis- played on the No.2 display. The valve opening is also displayed on the bar graph in 10% increments. When a potentiometer is not connected to the controller, [----] is displayed on the No.2 display, and nothing is displayed on the bar graph.
  • Page 74 • The process value is displayed on the No.1 display, and the set point is displayed on the No.2 display. The set point can be set. • Either of the local SP or remote SP is displayed as the set point depending on the Function SP mode.
  • Page 75 • Process value Unit Monitor Range Scaling lower limit -10%FS to scaling upper limit +10%FS Comment During temperature input, the range of the currently selected sensor is taken as the monitor range. • Set point Unit Default Setting Range/Monitor Range...
  • Page 76 SP ramp function is enabled. • Monitors the set point during SP ramp • Matches the set point of the “PV/SP” parameter when the set point is not during SP ramp . Function Unit...
  • Page 77 • When the “run/stop” function is assigned to event input, “stop” is set when event Function input is ON, and “run” is set when event input is OFF. Even if the setting of the Run/Stop parameter is changed using key operations, Controller operation will be determined by the status of the event input.
  • Page 78 AT (auto-tuning), setting the alarm values, set- ting the control period, and setting PID parameters. • To select this mode when in the levels 0 and 2, setup, expansion, option and cal- ibration modes, press the key for 1 second minimum.
  • Page 79 • Switches set points 0 to 3 by event input for use as the set point (local SP). • Of set points 0 to 3, the number of valid set points is designated by the “multi-SP function”...
  • Page 80 1 assignment” “Control output 2 assignment” “Auxiliary output 1 assign- ment” “Auxiliary output 2 assignment” “Alarm 1 type” “Alarm 2 type” “Alarm 3 type” “Alarm 1 open in alarm” “Alarm 2 open in alarm” “Alarm 3 open in alarm” (setup mode) “Alarm 1 hysteresis”...
  • Page 81 Conditions of Use The control must be either heating and cooling control, or advanced PID control. • In heating and cooling control, P at the cooling side is calculated by the following formula: Cooling side P = cooling coefficient ¢ P...
  • Page 82 Level 1 Mode Dead band Conditions of Use The control system must be heating and cooling control. • Sets the output dead band width in a heating and cooling control system. A nega- tive setting sets an overlap band. Function Unit Default Setting Range -19.99 to 99.99...
  • Page 83 Function • In heating and cooling control, the hysteresis can be set independently for heating and cooling. Use the “hysteresis (heat)” parameter to set the heating side hystere- sis, and use the “hysteresis (cool)” parameter to set the cooling side hysteresis.
  • Page 84 PID control, standard con- trol or heating and cooling control. • Sets the pulse output period. Set the control period taking the control characteris- tics and life expectancy of the controller into consideration. • In standard control, use the “control period (heat)” parameter. The “control Function period (cool)”...
  • Page 85 • Outputs the heater burnout alarm when the heater current value falls below this parameter setting. • When the set value is “0.0”, the heater burnout alarm is “OFF”. When the set Function value is “50.0”, the heater burnout alarm is “ON”.
  • Page 86 LBA (Loop Break Alarm), alarm hysteresis, and input digital filter values. • To select this mode when in the levels 0 and 1, setup, expansion, option and cal- ibration modes, press the key for 1 second minimum. The display changes to the menu display.
  • Page 87 • Switches between remote SP and local SP . • Switches the SP to the remote SP when an event input to which the “SP mode” has been assigned is ON. Switches the SP to the local SP when an event input to Function which the “SP mode”...
  • Page 88 • Specifies the change rate during SP ramp operation. Set the maximum permissi- ble change width per unit of time (minute or hour) as the “SP ramp set value”. However, note that when set to “0”, the SP ramp function is disabled.
  • Page 89 • This parameter is automatically set by AT execution (excluding AT execution in a ON/OFF control). • The LBA is output if the change width of the process value falls below 0.2 %full- Function scale of the time preset to this parameter when the manipulated variable is set in the “MV upper limit”...
  • Page 90 MV lower limit MV change rate limit • The “MV upper limit” and “MV lower limit” parameters set the upper and lower limits of the manipulated variable. When the manipulated variable calculated by the E5AK controller is outside of the upper-and lower-limit range, the upper limit Function or lower limit set to these parameters is output, respectively.
  • Page 91 Level 2 Mode Input digital filter • Sets the time constant of the input digital filter. The following figures shows the effect on data after passing through the digital filter. Function PV before passing through filter PV after passing through filter 0.63A...
  • Page 92 3.4 Setting Alarm Type (page 3-9) F Related parameters “Alarm 1 type” “Alarm 2 type” “Alarm 3 type” “Alarm 1 open in alarm” “Alarm 2 open in alarm” “Alarm 3 open in alarm” (setup mode) “Alarm value 1” “Alarm value 2” “Alarm value 3” (level 1 mode)
  • Page 93 E5AK controller. These parameters include parameters for specifying the input type, scaling, output assignments, and direct/reverse operation. • To select this mode when in the levels 0 to 2, expansion, option and calibration modes, press the key for 1 second minimum. The display changes to the menu display.
  • Page 94 CHAPTER 5 PARAMETERS Setup Mode Input type • Sets the sensor type by the code. Function • Set the code according to the following table. Default is “2: K1 thermocouple”. Set value Input Type -199.9 to 650.0 (_C) /-199.9 to 999.9 (_F)
  • Page 95 • This parameter can be used only when voltage input or current input is selected as the input type. • When voltage input or current input is selected as the input type, scaling is car- Function ried out. Set the scaling upper limit in the “scaling upper limit” parameter and the scaling lower limit in the “scaling lower limit”...
  • Page 96 • Errors 1, 2 and 3 cannot be assigned as outputs. • When the output function assigned to control output 1 is ON, the “OUT1” LED lights. However, note that the OUT1 LED does not light when control output (heat) or control output (cool) are assigned to linear outputs such as current and voltage.
  • Page 97 • Assigns output functions to either of auxiliary output 1 or 2. • The following eight output functions can be assigned as outputs: Alarms 1 to 3, HBA, LBA, Error 1 (input error), Error 2 (A/D converter error), Function and Error 3 (remote SP input error).
  • Page 98 3 type” parameter cannot be used. Alarm 3 type • “Alarm 1 to 3 type” parameters specify the operation of the alarm by the one of the set values in the following table. For details of operation at an alarm, see page 3-9.
  • Page 99 • Selects the output states of alarms 1 to 3. • When the controller is set to “close in alarm,” the status of the alarm output func- tion is output as it is. When set to “open in alarm,” the status of the alarm output Function function is output inverted.
  • Page 100 PID and ON/OFF control, specifying the standby sequence re- set method, and automatic return of display mode. • To select this mode when in the levels 0 to 2, setup, option and calibration modes, press the key for 1 second minimum. The display changes to the menu dis- play.
  • Page 101 Set point upper limit Set point lower limit • Limits the upper and lower limits of the set point. When the set point exceeds the settings of the “Set point upper limit” and “Set point lower limit” parameters, the E5AK controller regards the settings of the “Set point upper limit” and “Set point Function lower limit”...
  • Page 102 ST stable range dard control and advanced PID control. • When the “ST” parameter is set to “ON”, the self-tuning (ST) function is active. During operation of the ST function, the power on the load side connected to the control output must be turned ON at the same time or before start of E5AK Function operation.
  • Page 103 • Usually use the default value. • Sets the gain when adjusting the PID parameters by auto-tuning. • To give priority to response, decrease the set value of this parameter. To give Function priority to stability, increase the set value of this parameter.
  • Page 104 Expansion Mode Automatic return of display mode • If you do not operate any of the controller keys for the time set in this parameter when in levels 0 to 2 modes, the display automatically returns to the PV/SP dis- play.
  • Page 105 • The parameters in this mode can be used only when the “security” parameter (protect mode) is set to “0” and “1”. • You can select this mode only when the option unit is set in the controller. In this mode, you can set the communications conditions, transfer output and event input parameters to match the type of option unit set in the controller.
  • Page 106 • When set to “0”, the set point cannot be switched by event input. Function • When this parameter is set to “1”, set points 0 and 1 can be used. When set to “2”, set points 0 to 3 can be used.
  • Page 107 The Remote/Local function can be used on E53-AK01/02/03 option units. The SP mode functions can be used only when the ”Remote SP enable” parameter is ON. • Event input (Run/Stop, Manual/Auto, and SP mode) is disabled while the menu is displayed.
  • Page 108 • These parameters set the communications conditions. Make sure that the stop bit, data length, parity and baud rate of the host computer and the E5AK controller are matching. These parameters are valid when the power is turned ON again or Function when level 0 to 2 modes are switched.
  • Page 109 The setting range varies according to this output data. Also, a lower limit value larger than the upper limit value may be set. • During temperature input, the decimal point position of the set point, set point during SP ramp or process value is dependent on the currently selected sensor, and during analog input on the results of scaling.
  • Page 110 Conditions of Use The HBA output function must be assigned. • When this parameter is set to ON, the heater burnout alarm is held until either of the following conditions is satisfied: a Set the heater burnout set value to “0.0”.
  • Page 111 • Sets a band within which valve will not move. Set point Function PV dead band Process value • This function is for use to reduce valve movement, but consequently reduces con- trol performance within the PV deadband. • The decimal point is dependent on scaling. Unit Default...
  • Page 112 Function • When this parameter is set to “OFF”, only the local SP can be used. The set point during SP ramp is enabled only when the SP ramp function is enabled. Default...
  • Page 113 • Specifies the operation when the remote SP mode is switched to the local SP mode. • When this parameter is set to “ON”, the local SP is changed to the remote SP Function value used immediately before switching.
  • Page 114 (setup mode) can be used. Also, related output parameters can be used only when the communications unit (E53-AKF) is added on. • To select this mode when in the levels 0 to 2, setup, expansion and option modes, press the key for 1 second minimum.
  • Page 115 CHAPTER 6 USING THE COMMUNICATIONS FUNCTION CHAPTER CHAPTER 6 USING THE COMMUNICATIONS FUNCTION This chapter mainly describes communications with a host computer and communications commands. 6.1 Outline of the Communications Function ..Outline .
  • Page 116 J Transfer The host computer sends a “command frame” to the controller, and the controller returns a “response frame” corresponding to the content of procedure the command sent by the host computer. In other words, a response frame is returned for each command frame sent.
  • Page 117 • The total cable length should not exceed 500 meters. • Use shielded twisted-pair cables (AWG28 or more) for the cables. • Attach terminators to the controllers at both ends of a series of con- trollers connected in an open configuration. For example, in the fol- lowing configuration, connect the terminator to the host unit and unit No.30, and do not connect terminators to unit Nos.0 to 29.
  • Page 118 • The total cable length should not exceed 500 meters. • Use shielded twisted-pair cables (AWG28 or more) for the cables. • Attach terminators to the controllers at both ends of a series of con- trollers connected in an open configuration. For example, in the fol- lowing configuration, connect the terminator to the host unit and the unit No.30, and do not connect terminators to unit Nos.0 to 29.
  • Page 119 The start character. This character must be inserted before the lead- ing byte. • Unit No. Specifies the “unit No.” of the E5AK. If there are two or more trans- mission destinations, specify the desired destination using “unit No.” • Command type Specifies the command type by codes “1”...
  • Page 120 • Data is expressed in 1-byte units and in ASCII code. • When the read or write data is a numerical value, the data to be set must conform to the following conditions: (1) The decimal point “.”...
  • Page 121 0.0 to 50.0 *1 Possible only during reading *2 During temperature input, the range becomes the range of use of the selected sensor. *3 During heating and cooling control, the range becomes 0.0 to 105.0. *4 During position-proportional control, the range becomes 1 to 3999.
  • Page 122 *3 During heating and cooling control, the range becomes -105.0 to 0.0 *4 See page 5-26. *5 0: Control output (heat), 1: Control output (cool), 2: to 4: Alarms 1 to 3, 5: HBA, 6: LBA, 7 to 9: Errors 1 to 3 *6 See page 5-30.
  • Page 123 SP setting lower limit to SP setting upper limit 0: OFF, 1: ON SP tracking *1 During temperature input, the range becomes the range of use of the selected sensor instead of the scaling upper/lower limit values *2 See page 5-35.
  • Page 124 • RAM Write mode (number of writings: 100000 operations) In the RAM mode, the local SP (set point and set points 0 to 3) are saved to RAM, and in the backup mode, the local SP is saved to EE- PROM.
  • Page 125 CT hold Potentiometer error RSP input error To return to setting level 0 from setting level 1, issue the “software reset” com- About Setting Levels mand. If the parameter write command is issued for the setup and expansion modes in setting level 0, an error occurs, and the end code (0D = Command cannot be executed) is returned.
  • Page 126 CHAPTER 6 USING THE COMMUNICATIONS FUNCTION 6.5 How to Read Communications Error Information The result of communications on the E5AK can be checked by the end code in the response frame. Use this end code to remedy errors that may occur.
  • Page 127 Check the communications condition. If the communications condition of the host computer and E5AK controller match, then a probable cause is a problem in the communications circuit of one or both of the host computer and E5AK controller. Setting range error...
  • Page 128 Unit Command Data code Command type Input data Automatically generated The output format is as follows. The content of the response frame is displayed as it Unit Data Command code code Command type F Procedure (1) Read the program.
  • Page 129 For IBM PC COMPATIBLE MACHINE 1050 ’ 1060 ’ RS-232C SPEED: 9600BPS, PARITY: EVEN, DATA: 7, STOP: 2 1070 OPEN ”COM: 9600, E, 7, 2, CD0, CS0, DS0, RB256, RS ”FOR RANDAM AS #1 LEN=256 1080 REPEAT 1090 ’ Make Command 1100 PRINT ”send data : ”...
  • Page 130 J Examples of use F Set the unit No. to “00” • In the following examples, data is shown in individual blocks to make the exam- ples easier to understand. However, when actually creating programs, do not leave spaces between frame items. Also, response are displayed without spaces between frame items.
  • Page 131 CHAPTER 7 CALIBRATION This chapter describes procedures for each calibration operation. Read this chapter only when the controller must be calibrated. 7.1 Structure of Parameters ....
  • Page 132 Calibration of inputs → Saving of calibration data • Only inputs that have been set in the “input type” parameter (setup mode) can be calibrated. To temporarily save data for each of the cal- ibration parameters, press the key for 1 second.
  • Page 133 7.1 Structure of Parameters F Calibration item • Parameters are displayed on the No.1 display, and the process value is menu displayed in Hexadecimal on the No.2 display. • Normally, the process value changes by several digits. The process Calibration item...
  • Page 134 • Use the compensating conductor selected thermocouple. However, note that when thermocouple R, S, E, B, W or PLII is used, the cold junction compensator and the compensating conductor can be substi- tuted with the cold junction compensator and the compensating con- ductor for thermocouple K.
  • Page 135 (3) Press the key to display [ ] (0mV calibration display). Set STV output to 0mV . When the value on the No.2 display has stabi- lized (changes of several digits max.), press the key to tempo- rarily save the calibration data.
  • Page 136 (3) Press the key to display [ ] (0mV calibration display). Set STV output to 0mV . When the value on the No.2 display has stabi- lized (changes of several digits max.), press the key to tempo- rarily save the calibration data.
  • Page 137 [ ] (0Ω calibration) display. Short Nos.11 to 13 terminal No. 11 to 13. When the value on the No.2 display has sta- bilized (changes of several digits max.), press the key to tempo- rarily store the calibration data.
  • Page 138 (6) Press the key to display [ ] (0Ω calibration display, Short terminal Nos. 11 to 13. When the value on the No.2 display has sta- bilized (changes of several digits max.), press the key to tempo- rarily store the calibration data.
  • Page 139 The display changes to [ ] (0mA calibration display). Set the STV output to 0 mA. When the value on the No.2 display has stabilized (changes of several digits max.), press the key to temporarily store the calibration data.
  • Page 140 The display changes to [ ] (5 V calibration display). Set the STV output to 5V . When the value on the No.2 dis- play has stabilized (changes of several digits max.), press the key to temporarily store the calibration data.
  • Page 141 No.2 display reads [ ], the calibration data is invalidated. (9) This completes calibration of voltage input (0 to 5V , 1 to 5V). Press key to return the display to [ F Calibration : This example describes how to calibrate voltage input when the trans- fer output function is supported.
  • Page 142 E5AK controller has been correctly calibrated. • Operate the E5AK controller in the PV/SP monitor (level 0 mode) mode. • Check the indication accuracy at the upper and lower limits and mid- point. F Thermocouple •...
  • Page 143 The following figure shows the required device connection. AC100-240V (AC/DC24V 31 32 SOURCE • Operation Set the STV to the current value equivalent to the check value. F Voltage input • Preparation The following figure shows the required device connection. AC100-240V (AC/DC24V...
  • Page 144 CHAPTER 7 CALIBRATION 7--14...
  • Page 145 CHAPTER CHAPTER 8 TROUBLESHOOTING This chapter describes how to find out and remedy the cause if the E5AK does not function properly. 8.1 Initial Checks ......
  • Page 146 8.1 Initial Checks If trouble occurs, first of all check the following. (1) Power supply Make sure that the power supply is ON. Also, make sure that the power supply is within the rated voltage range. (2) Wiring Make sure that all cables are properly connected.
  • Page 147 F Operation at For control output functions, output the manipulated variable matched error to the setting of the “MV at PV error” parameter (level 2 mode). Alarm output functions are activated when the upper limit is exceeded. Memory error F Meaning Internal memory operation is in error.
  • Page 148 CHAPTER 8 TROUBLESHOOTING Calibration data error This error is output only during temperature input, and is displayed for two seconds when the power is turned ON. F Meaning Calibration data is in error. F Action Must repair. F Operation at Both control output functions and alarm output functions operate.
  • Page 149 (level 2 mode). F Input errors • If you assign error 1 as the output, an error can be output to auxiliary output 1 or auxiliary output 2 when input is in error. When this error occurs, remedy by following the description for “Input error” (page 8-3).
  • Page 150 MV change rate Parameter setting At stop Manipulated variable ¢ ¢ MV change rate Items marked by a “x” indicates combinations of conditions not acceptable during ST or AT execu- tion. Items marked by “ ---” are impossible combinations. 8--6...

  • Page 151: About Current Transformer (Ct)

    APPENDIX SPECIFICATIONS ......ABOUT CURRENT TRANSFORMER (CT) . . . CONTROL BLOCK DIAGRAM ....
  • Page 152 Storage : -25°C to 65°C (with no icing) Ambient Humidity 35% to 85% *1 Thermocouple W is W/Re5-26. *2 The following table shows the setting ranges and indication ranges for each of the inputs. Input Setting Range Indication Range JPt100 -199.9 to 650.0(_C)
  • Page 153 Note: 1. Use the K2CU-FVVA-VGS (with gate input terminals) for the detection of three-phase heater burnout. 2. The heater burnout alarm is always OFF if the alarm is set to 0.0A and always ON if the alarm is set to 50.0A.
  • Page 154 J Output Unit Ratings and Characteristics Ratings and characteristics conform to the output unit mounted on the controller. For details on the ratings of the output unit, see page 2---9. The relay output unit is already mounted on the E5AK-PRR2. When replacing the output unit, use the E53-R.
  • Page 155 AC 1000V (1min) Vibration Resistance 50Hz, 98m/s [10G] Weight Approx. 11.5g Approx. 50g Armature (2) Accessory Plug (2) *1 The maximum continuous current of the E5AK is 50 A. F Dimensions E54-CT1 φ5.8 2-φ3.5 E54-CT3 φ2.36 φ12 2-M3 depth 4 A--5...
  • Page 156 APPENDIX CONTROL BLOCK DIAGRAM J Standard type Temperature Analog input input Digital filter Digital filter Input shift Scaling Set point limiter Input type SP mode Process SP ramp value RSP enable Control method Control mode Control mode ON/OFF ON/OFF control...
  • Page 157 CONTROL BLOCK DIAGRAM J Position-proportional type Temperature Analog input input Digital filter Digital filter Input shift Scaling Set point limiter Input type SP mode Process SP ramp value RSP enable PID control MV change rate limiter Position- proportional dead band...
  • Page 158 *1 During heat and cooling control, the lower limit becomes -105.0%. During position-proportional control, the setting becomes HOLD, OPEN or CLOS. *2 During heat and cooling control, the setting range becomes 0.0 to 105.0%. *3 During heat and cooling control, the setting range becomes -105.0 to 0.0%.
  • Page 159 AT hysteresis 0.1 to 9.9 LBA detection width 0.0 to 999.9 *4 When temperature input is selected, the sensor range selected in the “input type” parameter (setup mode) corresponds to the scal- ing upper and lower limit value. A--9...
  • Page 160 -10.0 to 110.0% Default : SP The output ranges of the SP setting, set point or process value when temperature input is selected are the ranges sup- ported by the selected sensor. When the heating side manipulated variable or cooling side manipulated variable is selected, the transfer output lower limit in a heating and cooling control becomes “0.0”.
  • Page 161 MODEL LIST Description Type Name Specification Base unit E5AK-AA2 AC100-240 Standard model E5AK-AA2-500 AC100-240 Standard model with terminal cover E5AK-AA2 AC/DC24 Standard model E5AK-AA2-500 AC/DC24 Standard model with terminal cover E5AK-PRR2 AC100-240 Position-proportional model E5AK-PRR2-500 AC100-240 Position-proportional model with terminal cover...
  • Page 162 APPENDIX PARAMETER OPERATIONS LIST • Switching to modes other than manual or protect mode is carried out by mode selection in the menu display. • The figure below shows all parameters in the order that they are displayed. Some parameters are not displayed depending on the protect mode setting and conditions of use.
  • Page 163 Calibration mode Current input Platinum resistance Voltage input Thermocouple thermometer Thermocouple 1 Thermocouple 2 0 to 5V 1 to 5V 0 to 10V Transfer output Only when transfer output Thermocouple 1 : K1/J1/L1/E/N/W/PLII function is supported Thermocouple 2 : K2/J2/L2/R/S/B/T/U...
  • Page 164 In HT(hunting tuning) mode, when hunting occurs, the PID constants are amended to suppress the hunting. Note: Be sure to turn on the power supply to the load either before or simultaneously with the start of Temperature Controller opera- tion. Dead time will be measured from the time the Temperature Controller starts operating.
  • Page 165 Set point Stable range (Set to 15.0_C before shipping) Stability judgement time Stable Stable F Balanced Status If the process value is within the stable range for 60s when there is no output,it is deemed that the temperature is balanced. A--15...
  • Page 166 APPENDIX F Startup Conditions of DT (1) DT will start if the temperature that has been stable varies due to ex- ternal disturbance and the deflection of the temperature exceeds the stable range, and then the temperature becomes stable, provided that the number of maximum temperature values is less than four.
  • Page 167 X FORMAT The E5AK controller supports communications in the X format. Some of the data, such as unit, may differ with the E5AX/EX series. For details on commands and setting range, see Chapter 5 Parameters and Chapter 6 Using the Communications Function.
  • Page 168 APPENDIX J X FORMAT HEAD LIST Header Code Data Code Command Content Data Remarks AT cancel Write None AT start Write None Undefined error None Error response Remote/Local Write RAM write mode Backup mode Write None RAM data batch save...
  • Page 169 X FORMAT F RX (process value read) command status Unit Command Unit Process value Status Response code Content “1” “0” Run/Stop Stop Setting level Input error A/D converter error EEPROM RAM¸EEPROM RAM=EEPROM Alarm 1 Alarm 2 Alarm 3 AT execution...
  • Page 170 APPENDIX ASCII CODE LIST Upper 4 bits 0000 0001 0010 0011 0100 0101 0110 0111 0000 0001 0010 ” 0011 0100 0101 0110 & 0111 ’ 1000 1001 1010 1011 1100 < ¥ 1101 1110 > 1111 Lower 4 bits...
  • Page 171 Alarm 1 hysteresis ....5---24 Calibration: 0 to 5 V , 1 to 5 V ..7---10 Alarm 1 open in alarm .
  • Page 172 6---14 Conventions Used in this Chapter ..5---2 How to Use the Error Display ..8---3 Cooling coefficient ... . .
  • Page 173 No.2 display ......1---3 Relationship with set point limiter ..4---11 Remote SP enable .
  • Page 174 5---33 Switching with Manual operation ..4---2 Set the set point to “300.0” ... 6---16 Set the unit No. to “00” ....
  • Page 175 Revision History A manual revision code appears as a suffix to the catalog number on the front cover of the manual. Cat. No. H083-E1-03 Revision code The following table outlines the changes made to the manual during each revision. Page numbers refer to previous version.
  • Page 176 OMRON (CHINA) CO., LTD. OMRON ASIA PACIFIC PTE. LTD. In the interest of product improvement, Room 2211, Bank of China Tower, No. 438A Alexandra Road # 05-05/08 (Lobby 2), specifications are subject to change without notice. 200 Yin Cheng Zhong Road, Alexandra Technopark,...

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