Mitsubishi MELSEC-A Series User Manual
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Mitsubishi MELSEC-A Series User Manual

Mitsubishi MELSEC-A Series User Manual

General-purpose programmable controller
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Type A0J2HCPU(P21/R21)
Mitsubishi General-Purpose Programmable
Thank you for purchasing the Mitsubishi general-purpose
programmable controller MELSEC-A series.
Prior to use, please read both this manual and detailed manual
thoroughly and familiarize yourself with the product.
©1990 MITSUBISHI ELECTRIC CORPORATION
User's Manual
A0J2HCPU-U-H/W-E
MODEL
MODEL
Code
IB(NA)-66758-E(0308)MEE
Controller
(Hardware)
13JL05

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Summary of Contents for Mitsubishi MELSEC-A Series

  • Page 1 Type A0J2HCPU(P21/R21) Mitsubishi General-Purpose Programmable Controller User's Manual (Hardware) Thank you for purchasing the Mitsubishi general-purpose programmable controller MELSEC-A series. Prior to use, please read both this manual and detailed manual thoroughly and familiarize yourself with the product. A0J2HCPU-U-H/W-E MODEL...

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS (Read these precautions before using.) When using Mitsubishi equipment, thoroughly read this manual and the associated manuals introduced in this manual. Also pay careful attention to safety and handle the module properly. These SAFETY PRECAUTIONS classify the safety precautions into two categories: "DANGER"...
  • Page 3 [DESIGN PRECAUTIONS] DANGER (2) When the PLC detects the following problems, it will stop calculation and turn off all output in the case of (a). In the case of (b), it will stop calculation and hold or turn off all output according to the parameter setting.
  • Page 4 [DESIGN PRECAUTIONS] DANGER When connecting a peripheral device to the CPU module or connecting a personal computer or the like to the intelligent function module to exercise control (data change) on the running PLC, configure up an interlock circuit in the sequence program to ensure that the whole system will always operate safely.
  • Page 5 [INSTALLATION PRECAUTIONS] CAUTION Use the PLC in an environment that meets the general specifications contained in this manual. Using this PLC in an environment outside the range of the general specifications could result in electric shock, fire, erroneous operation, and damage to or deterioration of the product. Hold down the module loading lever at the module bottom, and securely insert the module fixing latch into the fixing hole in the base unit.
  • Page 6 [WIRING PRECAUTIONS] DANGER Completely turn off the external power supply when installing or placing wiring. Not completely turning off all power could result in electric shock or damage to the product. When turning on the power supply or operating the module after installation or wiring work, be sure that the module's terminal covers are correctly attached.
  • Page 7 [STARTUP AND MAINTENANCE PRECAUTIONS] DANGER Do not touch the terminals while power is on. Doing so could cause shock or erroneous operation. Correctly connect the battery. Also, do not charge, disassemble, heat, place in fire, short circuit, or solder the battery. Mishandling of battery can cause overheating or cracks which could result in injury and fires.
  • Page 8 [STARTUP AND MAINTENANCE PRECAUTIONS] CAUTION The online operations conducted for the CPU module being operated, connecting the peripheral device (especially, when changing data or operation status), shall be conducted after the manual has been carefully read and a sufficient check of safety has been conducted. Operation mistakes could cause damage or problems with of the module.
  • Page 9 Japanese Manual Version IB(NA)68462-E 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 10: Table Of Contents

    CONTENTS 1.SPECIFICATIONS .......................1 1.1 SPECIFICATIONS......................1 2.PERFORMANCE SPECIFICATIONS................2 2.1 A0J2HCPU Module Performance Specifications ............2 3.LOADING AND INSTALLATION..................4 3.1 Installing Modules......................4 3.1.1 Precautions for handling of modules ..............4 3.1.2 Installation environment...................4 3.1.3 Precautions relating to the installation of the module ...........5 3.2 Failsafe Circuits .......................8 3.3 Power Supply Module and Cable Specifications ............
  • Page 11 This manual describes the handling precautions, connections to I/O modules, and error codes, for the A0J2HCPU(P21/R21). About Manuals The following manuals are also related to this product. Please order those you require. Detailed Manuals Manual No. Manual Title (Model Code) A0J2HCPU (P21/R21) User's Manual IB-66268 This manual describes the performance, functions, handling, etc., of the...

  • Page 12: Specifications

    1. SPECIFICATIONS 1.1 SPECIFICATIONS Table 1.1 General Specification Item Specifications Ambient operating 0 to 50°C temperature Ambient storage -20 to 75°C temperature Ambient operating 10 to 90%RH, No-condensing humidity Ambient storage 10 to 90%RH, No-condensing humidity No. of Frequency Acceleration Amplitude sweeps 0.075mm...

  • Page 13: Performance Specifications

    2. PERFORMANCE SPECIFICATIONS 2.1 A0J2HCPU Module Performance Specifications (1) This section describes the performance of the A0J2HCPU module, including memory capacity, devices, etc. Table 2.1 List of Performance Type A0J2H A0J2H-DC24 Item Control system Repeated operation (using stored program) I/O control method Refresh mode/Direct mode selectable Language dedicated to sequence control Programming language...
  • Page 14 (2) This section describes the performance specifications of optical and coaxial links when using A0J2HCPU (P21/R21) data link modules. Table 2.2 Data Link Performance Specification Optical Data Link Coaxial Data Link A0J2HCPUP21 A0J2HCPUR21 Maximum number of I/O points (480 when extension base is used) Max.

  • Page 15: Loading And Installation

    3. LOADING AND INSTALLATION 3.1 Installing Modules 3.1.1 Precautions for handling of modules The precautions on handling the A0J2HCPU are listed below. (1) The case of the A0J2HCPU is made of resin : do not drop it or subject it to strong impact.

  • Page 16: Precautions Relating To The Installation Of The Module

    3.1.3 Precautions relating to the installation of the module When installing the PC on an operation panel or other base, due consideration must be given to operability, maintainability, and resistance to environmental conditions. (1) Installation site (a) In order to allow good ventilation, and to ensure the module can be replaced easily, provide the following clearances between the module and structural elements or other equipment.
  • Page 17 Indicates the position of the ceiling of the panel. or a wiring duct or component. 50 (1.97) A0J2C03 A0J2C06 or greater Duct height: 80 (3.15) 50 (1.97) to 50 (1.97) 90 (3.54) 70 (2.76) or greater greater 50 (1.97) or greater Unit: mm (inch) Unit: mm (inch) *1 If there is a duct in the 80 mm (3.15 in)
  • Page 18 (2) Installing orientation (a) Since the PC generates heat it must be used in the orientation that permits good ventilation, shown below. (b) Do not install it in the orientations shown below. Vertical mount Horizontal mount (3) The A0J2HCPU module must be mounted on a flat surface. An uneven mounting surface can cause undue stress to the PCBs, and could lead to malfunctions.

  • Page 19: Failsafe Circuits

    3.2 Failsafe Circuits When the programmable controller power is switched ON/OFF, abnormal processing outputs may occur temporarily due to a delay time between the controller's power supply and the external power supply (particularly DC power) for processing, and due to a start-up time difference. For example, a momentary erroneous output will occur from a DC output module if the programmable controller power is switched ON after the processing power (external power supply) is switched ON.
  • Page 20 (1) Example of circuit design For AC Power For AC/DC Power Power supply Power supply Transformer Transformer Transformer "DC current establi- Fuse Fuse Fuse shed" signal input START/STOP circuit M9006 START is enabled power M9006 at programmable (+)(−) M9039 controller's RUN M9039 "TM"...
  • Page 21 (2) Failsafe measures for PC failure Although programmable controller CPU and memory failures are detected by a self-diagnosis function, there are cases where malfunctions at the input/output control area, etc., cannot be detected by the CPU. Although the operation at such times depends in part on the nature of the malfunction, there may be cases where an all-points ON or all-points OFF condition occurs, making it impossible to ensure normal and safe execution of the operation being controlled.

  • Page 22: Power Supply Module And Cable Specifications

    3.3 Power Supply Module and Cable Specifications 3.3.1 Performance specification for power supply modules Table 3.1 Performance Specification for Power Supply Modules Type Performance specification Item A0J2H A0J2PW A0J2H-DC24 A0J2PW-DC24 +10% +10% +10% 100-120 VAC 200-240 VAC 24 VDC -15% -15% -15% Input power...

  • Page 23: Cable Specifications

    3.3.2 Cable specifications This section describes specifications of the I/O and extension cables to be used for the A0J2HCPU system. (1) I/O cable specifications Table 3.2 shows specifications of the I/O cables to be used for the A0J2HCPU system. Select I/O cable according to module mounting method. Table 3.2 I/O Cable Specifications Type A0J2C01...

  • Page 24: Extension Cable Specifications

    POINTS (a) When connecting the CPU module and I/O modules, the overall distance of the I/O cable must not be made longer than 6.6 m (21.65ft). If a length of I/O cable longer than this is used, erroneous outputs may be made to the output units.

  • Page 25: Power Supply Connection

    3.3.3 Power supply connection The information on wiring that you should be aware of when using the system is given below. The following cautions must be observed when wiring the power line and input/output lines. (1) Wiring of power source (a) If voltage variations are greater than the specification, connect a constant voltage transformer.
  • Page 26 (e) The 100 VAC, 200 VAC, 24 VDC cables should be twisted as tightly as possible, with the distance between the connected modules as short as possible. (f) A thick cable (max. 2 mm ) should be used for the 100 VAC, 200 VAC, 24 VDC cables to minimize voltage drop.
  • Page 27 (3) Wiring of I/O equipment (a) The applicable size of wire to the terminal block connector is 0.75 to 2 . However, you are recommended to use wires of 0.75 mm convenience. (b) Run the input line and output line along separate rotes. (c) I/O signal wires must be at least 100 mm (3.94 in.) away from high-voltage and large-current main circuit wires.

  • Page 28: Connection To Module Terminals

    3.3.4 Connection to module terminals This section describes the wiring of power lines and grounding lines to CPU modules, I/O modules, and extension base units. (1) A0J2HCPU A0J2HCPU module 100/110 VAC Connect to 24 VDC terminal of I/O module which requires 24 VDC internally.
  • Page 29 POINTS (1) The 100/200 VAC and 24 VDC cables should be as thick as possible (max. 2 mm ), and should be twisted from the connected terminal. In order to prevent shorting at the solderless terminals due to loose screws, use solderless terminals with insulation sleeves. (2) If the LG and FG terminals are connected, be sure to ground the connection.

  • Page 30: Precaution When Connecting The Uninterruptive Power Supply (Ups)

    (2) A0J2H-DC24 A0J2H-DC24 Fuse 24 VDC AC DC I/O module (A0J2-E28 ) + 24V Grounding line Ground 3.4 Precaution when Connecting the Uninterruptive Power Supply (UPS) Be sure of the following items when connecting the ACPU system to the uninterruptive power supply (abbreviated as UPS hereafter) : Use a UPS which employs the constant inverter power supply method with 5% or less voltage fluctuation.

  • Page 31: Part Ldentification And Setting Of A0J2Hcpu (P21/R21)

    3.5 Part ldentification and Setting of A0J2HCPU (P21/R21) A0J2HCPU A0J2HCPUP21 A0J2HCPUR21 1) RUN/STOP key switch • RUN/STOP : Executes/stops sequence program operation. • RESET : Resets the hardware Resets after occurrence of an operation error and initializes for sequence program operation. •...
  • Page 32 "RUN" LED • Lit : The RUN key switch is at the "RUN" position and sequence program operation is in progress. The LED remains lit if an error that does not stop sequence program operation occurs. • Not lit : The "RUN"...
  • Page 33 The LEDs "CRC" to "R.LOOP" indicate the operation status of the MELSECNET data link system. For details, refer to the MELSECNET (II) Data Link System Reference Manual. The "S.RUN" LED indicates the operation status of the sequence program. • Lit : The RUN key switch is in the "RUN"...
  • Page 34 Power supply terminal block A0J2HCPU(P21/R21) A0J2H-DC24 Terminal screw M4 × 0.7 × 8 Power input terminals Power supply terminals Connect 100 VAC or 200 VAC to these terminals. Voltage selection terminals To receive 100 VAC : Short the terminals with the jumper. To receive 200 VAC : Leave the terminals open.
  • Page 35 I/O cable and extension cable connector • The connector for signal cables of I/O modules and extension base units. Connect the I/O cable (A0J2C0 ) or extension cable (AJ2C Cover Protective cover for PCB, EP-ROM, and battery of A0J2HCPU (P21/R21) •...
  • Page 36 13) DIP switch Switches used to set memory protect state, ROM/RAM selection, and input/output control mode. Factory setting Switches 1 and 2 ... OFF Switch 3 ....ON I/O control mode selection switch Memory selection switch Memory protect switch Setting the memory protect switch The memory protect range is the first 20k bytes of the 32k byte user memory area.

  • Page 37: Mode Selection Switch

    16) Station number setting switches • Set the station number in the range of 01 to 64. • "×10"switch : Sets tens digit of station number STATION No. • "×1" switch : ×10 ×1 Sets units digit of station number •...
  • Page 38 18) Fiber-optic cable connector The connector is shown below. Reverse loop: Send Forward loop: Receive Forward loop: Send Reverse loop: Receive • Connect the fiber-optic cable connector and cables as shown below. A0J2HCPUP21 A0J2HCPUP21 Front OUT IN Master station Station 1 Station 2 19) Coaxial cable connector R SD...

  • Page 39: Installing And Removing The Lever Holder

    3.6 Installing and Removing the Lever Holder 3.6.1 Procedure for installation (1) First, attach the cord on the lever holder to the connection cable. (This is to prevent loss and rinks.) CORD LEVER HOLDER CONNECTION CABLE (2) Place the both holes of the Lever Holder on top of connector levers and position the Lever Holder on connector.

  • Page 40: Procedure For Removal

    (3) Using fingers, push arms of the Lever Holder to lower top of connector levers and lock connector levers. PUSH LEVER HOLDER PUSH CONNECTOR (4) Check to ensure that the Lever Holder is firmly attached the connector and locked connector levers. 3.6.2 Procedure for removal Pull the cord of the Lever Holder, remove the Lever Holder from connector levers.

  • Page 41: Input/Output Module Specifications And Connections

    4. INPUT/OUTPUT MODULE SPECIFICATIONS AND CONNECTIONS 4.1 Explanation of I/O Module Model Names This section explains the model names of I/O modules. The final part of an I/O module model name indicates the I/O specifications. A0J2-E A: 100VAC input D: 12/24VDC input R: Relay output I/O specifications S: Triac output...
  • Page 42 Input Response Time Internal Number of Common Connections Current Input/Output Connection Consumption Points OFF→ → → → ON ON→ → → → OFF 15ms 35ms max. max. 36 point 16 points per terminal block 105mA 10ms 10ms common connector max. max.

  • Page 43: Connections For Input Modules

    4.2.2 Connections for input modules Model Name Rated Input Voltage Model Name Rated Input Voltage A0J2-E32A 100/120VAC A0J2-E32D 12/24VDC − COM1 COM1 − COM2 COM2 Model Name Rated Input Voltage A0J2E-E32D 12/24VDC − COM1 − COM2...
  • Page 44 MEMO...

  • Page 45: Output Modules

    4.3 Output Modules 4.3.1 Output module specifications Points Rated Output Response Model Max. Load Current Output Type Load Time Name Module Voltage 1Common OFF→ → → → ON ON→ → → → OFF 1Point Relay contact 24VDC A0J2-E24R 10ms max. 12ms max. output 240VAC 100/...
  • Page 46 External Number Internal External Common Surge Error Current Supply of Input/ Fuse Current Connection Connection Suppressor Display (TYP 24VDC) Output Consumption Current Points None None None 0.145A 0.23A CR absorber 0.4A 3.2A Featured 36 points terminal 8 points per None None 0.023A 64 points...

  • Page 47: Output Module Connections

    4.3.2 Output module connections Model Name Rated Load Voltage Model Name Rated Load Voltage A0J2-E24R 24VDC A0J2-E24S 100V/240VAC 240VAC A0J2E-E24R COM1 COM1 COM2 COM2 COM3 COM3 DC24V − DC24G Model Name Rated Load Voltage Model Name Rated Load Voltage A0J2-E24T 12V/24VDC A0J2E-E24T 12/24VDC...
  • Page 48 MEMO...

  • Page 49: Input/Output Modules

    4.4 Input/Output Modules 4.4.1 Input/Output module specification Input Modules Points Per Rated Input Input Model Name Input Type Insulation Method Module Voltage Current A0J2-E28AR AC input 100/120VAC 10mA A0J2-E28AS A0J2-E28DR 3/7mA DC input A0J2-E28DS 3/7mA (sink type) A0J2-E28DT 3/7mA 12/24VDC A0J2E-E28DR 3/7mA DC input...
  • Page 50 Max. Simultaneous Operation Voltage Input Response Time Input Points Input External Common (Simultaneous ON Display Connection Connection → → → → → → → → Percentage) Voltage Voltage 80VAC 40VAC 15ms 35ms max. max. max. greater 10ms 10ms 36 points max.
  • Page 51 Output Modules Number Rated Output Response Max. load Current of Points Model Name Output type load Time Voltage 1common OFF→ → → → ON ON→ → → → OFF 1point Module Relay contact 24VDC A0J2-E28AR 10ms max. 12ms max. output 240VAC 100/240 0.5Hz+...
  • Page 52 External power Internal Number of Common Surge Error Supply Fuse Current Occupied Connection Suppressor Display (TYPE 24VDC) Consumption Points Current 8points per common 3points per None None None 0.14A 0.125A common independent contacts 8points per common CR absorber 0.26A 3.2A Featured 4points per common...

  • Page 53: Input/Output Module Connections (A0J2(E)-E28

    4.4.2 Input/Output module connections (A0J2(E)-E28 Rated Input Rated Load Rated Input Rated Load Model Name Model Name Voltage Voltage Voltage Voltage 24VDC A0J2-E28AS 100/120VAC 100V/240VAC A0J2-E28AR 100/120VAC 240VAC COM1 COM1 COM2 COM2 COM3 COM4 COM3 DC24V DC24G − Rated Input Rated Load Rated Input Rated Load...
  • Page 54 Rated Input Rated Load Rated Input Rated Load Model Name Model Name Voltage Voltage Voltage Voltage 24VDC A0J2-E28DT 12/24VDC 12/24VDC A0J2E-E28DR 12V/24VDC 240VAC − − COM1 COM1 − COM2 COM2 DC12/24V COM3 − COM3 DC24V DC12/24V DC24G − Rated Input Rated Load Rated Input Rated Load...

  • Page 55: Input/Output Module Connections (A0J2(E)-E56

    4.4.3 Input/Output module connections (A0J2(E)-E56 An A0J2(E)-E56 is a combination of an input module (A0J2)(E)-E32 ) and an output module (A0J2(E)-E24 ). For details on connecting the A0J2(E)-E56 type I/O modules, refer to the details for the corresponding input modules and output modules. The table below indicates the combinations of I/O modules.

  • Page 56: Error Codes

    5. ERROR CODES If an error occurs in the RUN mode, an error display or error code (including a step number) is stored in the special register by the self-diagnostic function. The error code reading procedure and the causes of and corrective actions for errors are shown below.
  • Page 57 Table 5.1 Error Codes List (Continued) Contents of Special Error Message Register Error and Cause Corrective Action State D9008 (BIN value) "MISSING (1) There is no END (FEND) (1) Write END at the end of END INS." instruction in the program. the program.
  • Page 58 Table 5.1 Error Codes List (Continued) Contents of Special Error Message Register Error and Cause Corrective Action State D9008 (BIN value) "CAN’T (8) The instruction has (1) Read the error step by EXECUTE (P)" caused execution to jump use of a peripheral (Checked at to a step or subroutine device and correct the...
  • Page 59 (1) The CPU has checked if Since this is a PC CPU write and read operations hardware fault, consult your (Checked at can be performed properly nearest Mitsubishi power on, STOP to the data memory area of representative. reset, M9084...
  • Page 60 CPU hardware fault. STOP noise, etc. Therefore, consult your (Checked at the (2) The instruction has nearest Mitsubishi execution of changed to another representative. instruction code for some instruction) reason. "WDT instruction cannot Check for an infinite loop and ERROR"...
  • Page 61 Therefore, change the unit and check the STOP defective module. (Checked at the Consult your nearest execution of Mitsubishi representative FROM and TO about the defective instruction) module. "SP.UNIT When FROM/TO instructions is This is a special function DOWN"...
  • Page 62 Therefore, change the module and check the STOP defective module. Consult your nearest Mitsubishi representative (At interrupt about the defective occurrence) module. "SP.UNIT LAY. (1) Three or more computer (1) Reduce the computer ERR."...
  • Page 63 If this message is (Checked at displayed again, it is a power on, hardware fault. reset, STOP to Therefore, consult your RUN, PAUSE nearest Mitsubishi to STEP-RUN) representative. "OPERATION (1) The result of BCD (1) Use a peripheral device ERROR" conversion has exceeded...

  • Page 64: Appendices

    Appendix 2.2 Transport Guidelines Comply with IATA Dangerous Goods Regulations, IMDG code and the local transport regulations when transporting products after unpacking or repacking, while Mitsubishi ships products with packages to comply with the transport regulations. Also, contact the transporters.
  • Page 65 MEMO...
  • Page 66 Warranty Mitsubishi will not be held liable for damage caused by factors found not to be the cause of Mitsubishi; machine damage or lost profits caused by faults in the Mitsubishi products; damage, secondary damage, accident compensation caused by special factors unpredictable by Mitsubishi;...

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