Mitsubishi A68DAV User Manual
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Mitsubishi A68DAV User Manual

Mitsubishi A68DAV User Manual

Digital-analog converter module melsec a
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Digital-Analog Converter Module Type A68DAV/DAI(S1)
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User
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Mitsubishi Programmable Logic Controller

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Summary of Contents for Mitsubishi A68DAV

  • Page 1 Digital-Analog Converter Module Type A68DAV/DAI(S1) User s Manual Mitsubishi Programmable Logic Controller...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS (Always read these precautions before using this equipment.) Before using this product, please read this manual and the relevant manuals introduced in this manual carefully and pay full attention to safety to handle the product correctly. The precautions given in this manual are concerned with this product. Refer to the user's manual of the CPU module in use for details on the safety precautions for the programmable logic controller system.
  • Page 4 [INSTALLATION PRECAUTIONS] CAUTION Use the PLC in the environment that meets the general specifications given in this Manual. Using the PLC outside the range of the general specifications may result in electric shock, fire or malfunction, or may damage or degrade the module. Load the module after securely inserting the module fixing hook at the module bottom into the fixing hole of the base unit.
  • Page 5 REVISIONS *The manual number is given on the bottom left of the back cover. Print Date *Manual Number Revision Jul., 1991 IB (NA)-66285-A First edition Nov., 1997 IB (NA)-66285-B Correction Section 2.2, Section 3.6, Section 4.6.2 Apr., 2001 IB (NA)-66285-C Adding models A68DA-S1 Addition...
  • Page 6 INTRODUCTION Thank you for choosing the Mitsubishi MELSEC-A Series of General Purpose Programmable Controllers. Please read this manual carefully so that the equipment is used to its optimum. A copy of this manual should be forwarded to the end user.

  • Page 7: Table Of Contents

    SPECIFICATIONS........................3 − − − − 1 ~ 3 − − − − 21 General Specifications ........................3 − 1 Performance Specifications ......................3 − 2 I/O conversion characteristics of the A68DAV ...............3 − 4 3.2.1 I/O conversion characteristics of the A68DAI ..............3 − 7 3.2.2...
  • Page 8 4.6.1 Connection of A68DAV/DAI/DAI-S1 and external devices ..........4 − 8 4.6.2 Connection of connect the external power supply to the A68DAV/DAI .......4 − 10 4.6.3 PROGRAMMING........................5 − − − − 1 ~ 5 − − − − 12 Programming Procedure......................5 − 1 Sample Program ........................5 −...
  • Page 9 Conformation to the EMC Directive and Low Voltage Instruction When incorporating the Mitsubishi PLC into other machinery or equipment and keeping compliance with the EMC and low voltage directives, refer to Chapter 3, "EMC Directives and Low Voltage Directives" of the User's Manual (Hardware) included with the CPU module or base unit used.

  • Page 10: Introduction

    PLC CPU to analog values (voltage outputs ranging from 0 mA to 20 mA). In the following section, A68DAI is used generically for A68DAI and A68DAI-S1. A68DAV and A68DAI are referred to as "A68DAV/DAI" or "module" in this manual. Features (1) Allows digital-to-analog conversion for 8 channels.
  • Page 11 1. INTRODUCTION MELSEC-A MEMO 1 − 2...

  • Page 12: System Configuration

    Overall Configuration 2.1.1 Building block type CPU system CPU module Building Type block type Main base unit A32B* D-A converter module Type A35B A38B A68DAV Type A68DAI Extension cable AC06B Type AC12B AC30B Extension base unit A55B A58B Type A65B A68B Fig.

  • Page 13: Compact Type Cpu System

    Extension base unit Extension cable I/O cable A55B A0J2C01 A0J2C04B D-A converter module A58B Type Type A0J2C03 Type A0J2C10B A65B A0J2C06 A68DAV A68B Type A68DAI I/O module A0J2 Type I/O module Fig. 2.2 Compact Type CPU System Configuration 2 − 2...

  • Page 14: Applicable A-Series Systems

    POINT The A68DAV/DAI cannot be used in an A0J2P25/R25(remote I/O station). (2) A68DAV/DAI may be loaded into any slot on the base unit with the following precautions: (a) When using the A68DAV/DAI with the A55B or A58B extension bases (i.e.

  • Page 15: Notes On Configuring The System

    2. SYSTEM CONFIGURATION MELSEC-A Notes on Configuring the System (1) When using the A68DAV/DAI, an external power supply is required to supply 24 VDC to the A68DAV/DAI. When supplying a 24 VDC power, follow the power supply specifications mentioned in Section 3.2 Performance Specifications (external power supply).

  • Page 16: Specifications

    MELSEC-A 3. SPECIFICATIONS This chapter describes the general specifications performance specifications, and I/O conversion characteristics of the A68DAV/DAI. General Specifications Table 3.1 shows the general specifications of the A68DAV/DAI. Table 3.1 General Specifications Item Specifications Operating ambient 0 to 55 °C...

  • Page 17: Performance Specifications

    3. SPECIFICATIONS MELSEC-A Performance Specifications Table 3.2 shows the performance specifications of the A68DAV/DAI. Table 3.2 Performance Specifications Specifications Item A68DAV A68DAI(S1)*4 (1) 16-bit signed binary data (1) 16-bit signed binary data (2) Setting range: (2) Setting range: Resolution Setting...
  • Page 18 "1". *2 Overall accuracy Over all accuracy is the accuracy to the maximum value of analog output. 1) Overall accuracy of the A68DAV is the accuracy when the output voltage setting is 10 volts. +10 V Fluctuation will be within 10V ±1% (100mV)

  • Page 19: I/O Conversion Characteristics Of The A68Dav

    (2) Offset/gain values (a) The offset and gain values are defined as follows. 1) Offset value : Voltage output from the A68DAV when the digital value specified from the PLC CPU is "0". 2) Gain value : Voltage output from the A68DAV when digital value specified from the PLC CPU is "4000"...
  • Page 20 Section 3.6 gives buffer details. POINT Due to the nature of the D-A converter of the A68DAV, the variance value of analog output values in response to an increment/decrement of the digital input value by "1" might differ from the calculated value.
  • Page 21 3. SPECIFICATIONS MELSEC-A (5) I/O conversion characteristics when offset/gain setting is changed The figures below show the I/O conversion characteristics when offset/gain setting is changed. The right figure shows the I/O conversion characteristics when offset/gain setting is provided as follows. Offset Value Gain Value +10 V...

  • Page 22: I/O Conversion Characteristics Of The A68Dai

    3. SPECIFICATIONS MELSEC-A 3.2.2 I/O conversion characteristics of the A68DAI (1) I/O conversion characteristics Since the I/O conversion characteristics are for converting the set digital values from the CPU to an analog value, they slanted by the joining of the offset value and gain value.
  • Page 23 Section 3.6 gives buffer details. POINT Due to the nature of the D-A converter of the A68DAV, the variance value of analog output values in response to an increment/decrement of the digital input value by "1" might differ from the calculated value.
  • Page 24 3. SPECIFICATIONS MELSEC-A (5) I/O conversion characteristics when offset/gain setting is changed The figures below show the I/O conversion characteristics when offset/gain setting is changed. (mA) The right figure shows the I/O conversion characteristics when offset/gain setting is provided as follows. Offset Value Gain Value Practical...

  • Page 25: Analog Output Control Functions

    3. SPECIFICATIONS MELSEC-A Analog Output Control Functions 3.3.1 Analog output HOLD/CLEAR function at STOP of CPU When the CPU is at STOP, or when the D-A conversion is stopped by the CPU module because of the occurrence of error, holding of analog output can be selected for all channels in batch with the HOLD/CLEAR terminal.

  • Page 26: Cpu I/O Signal

    CPU I/O Signal 3.4.1 Overview of I/O signals The A68DAV/DAI uses 32 points of signals for input and output respectively. Table 3.4 gives the allocation and description of I/O signals. X devices refer to input signals from the A68DAV/DAI to the CPU.

  • Page 27: I/O Signal Functions

    This flag is set when the self-diagnosis function of the A68DAV/DAI detects a WDT error. While the error flag is set, the D-A conversion of the A68DAV/DAI does not RUN (0 V/0 mA is output). If the error flag (X0) is set, a hardware malfunction may occur.
  • Page 28 Buffer memory addresses Check code 10 to 17 POINT The I/O allocation numbers of the A68DAV/DAI mentioned in this manual are those when the A68DAV/DAI is loaded in slot No.0 of the main base unit. 3 − 13...

  • Page 29: Buffer Memory

    3. SPECIFICATIONS MELSEC-A Buffer Memory The A68DAV/DAI has a buffer memory (not battery backed) for data communication with the CPU. The buffer memory assignment and data maps are indicated below. 3.5.1 Buffer memory assignment Address 2 Relevant (Decimal) Default Value...

  • Page 30: Analog Output Enable/Disable Channel Area

    3. SPECIFICATIONS MELSEC-A 3.5.2 Analog output enable/disable channel area (Address 0 (1) Defines output enable/disable for the converted analog value per channel. (2) All channels are enabled for output when: (a) Power is switched on; or (b) CPU is reset. (3) Output disable/enable is defined by 1/0.

  • Page 31: Resolution Setting Area Of Digital Value

    (−4000 to 4000 : −4097 or below : −4096 for guaranteed operation) −8192 to 8191 8192 or above : 8191 1/8000 A68DAV (−8000 to 8000 −8193 or below : −8192 :for guaranteed operation) −12288 to 12287 12288 or above : 12287 1/12000 (−12000 to 12000 :...

  • Page 32: 1 To Ch.8 Set Value Check Code Storage Area

    3. SPECIFICATIONS MELSEC-A POINT (1) If the set value is other than 1, 2, or 3, the resolution value is not changed and is set to the last set value before set or to a default value. (2) Set the resolution multiplication value only once before the D-A conversion value output enable flag is turned ON.

  • Page 33: Function Block Diagram

    PLC CH. 1 module CH. 2 CH. 3 CH. 4 Hold Buffer con- circuit memory version circuit CH. 5 CH. 6 CH. 7 CH. 8 24 VDC +15 V −15 V Fig. 3.7 A68DAV Function Block Diagram 3 − 18...
  • Page 34 3. SPECIFICATIONS MELSEC-A A68DAI RUN LED WDT error flag Channel select OFFSET switch D-A conversion ready flag Error flag Offset/gain switch GAIN Control UP/DOWN switch D-A conversion value DOWN circuit Output enable flag TEST HLD/CLR OUTPUT Interface with PLC CH. 1 Current module detection...
  • Page 35 3. SPECIFICATIONS MELSEC-A A68DAI-S1 RUN LED WDT error flag Channel select OFFSET switch D-A conversion ready flag Error flag Offset/gain switch GAIN Control UP/DOWN switch D-A conversion value DOWN circuit Output enable flag TEST HLD/CLR OUTPUT Interface Current with PLC detection circuit CH.
  • Page 36 3. SPECIFICATIONS MELSEC-A MEMO 3 − 21...

  • Page 37: Pre-Operation Settings And Procedures

    Load module. • Load the A68DAV/DAI onto the specified slot. Connect the external power supply …..See Section 4.6.3 • Connect 24 VDC to the A68DAV/DAI for D-A conversion. Specify analog output HOLD/CLEAR. ….. See Section 4.4. • Using a jumper, specify whether analog output is held or cleared at the time of CPU STOP.

  • Page 38: Handling Instructions

    4. PRE-OPERATION SETTINGS AND PROCEDURES MELSEC-A Handling Instructions (1) Protect the A68DAV/DAI and its terminal block from impact loads. (2) Do not remove the printed circuit boards from the housing. There are no user- serviceable parts on the boards. (3) Ensure that no conductive debris can enter the module. If it does, make sure that it is removed.

  • Page 39: Nomenclature

    Application Indicates the operating status of the A68DAV/DAI. (Normal mode) On.......... • Indicates that the A68DAV/DAI is operating without fault. Off.......... • 5 VDC is not supplied to the A68DAV/DAI. • A68DAV/DAI is in WDT error. • A68DAV/DAI hardware fault has occurred.
  • Page 40 • SET position : Offset/gain value storage mode. (The offset/gain value is stored to the A68DAV/DAI internal memory when the switch is moved from "OFFSET"/"GAIN" to "SET". Used to define the offset/gain value for the specified channel. Increases or decreases the offset or gain value at the following rate: •...

  • Page 41: Hold/Clear Setting Of Analog Output

    This section explains how to define a HOLD/CLEAR setting of analog output when the CPU is in the STOP mode. (1) Use the HOLD/CLEAR terminal (on the front of the A68DAV/DAI module) to define the HOLD/CLEAR setting of analog output.

  • Page 42: Offset/Gain Setting

    (2) Offset/gain setting is allowed within the following ranges: (a) A68DAV : −10 V to 0 V to + 10 V (b) A68DAI : −0 mA to 20 mA If any value set is outside the above range, overall accuracy may not be within the range of performance specifications (see Section 3.2).

  • Page 43: Offset/Gain Setting Procedure

    4. PRE-OPERATION SETTINGS AND PROCEDURES MELSEC-A 4.5.2 Offset/gain setting procedure Start Select test mode .."RUN" LED switched OFF. Connect the TEST terminals (terminal Nos. 1 and 3) to switch to test mode. Select channel After checking that the OFFSET/GAIN select switch is in "SET"...

  • Page 44: Wiring

    *2 : If noise or ripple is generated by the external wiring, connect a 0.1 to 0.47 µF (25V or more voltage resistance parts) capacitor to the input terminal of the external device. Fig. 4.3 Connection Example of A68DAV and External Devices 4 − 8...
  • Page 45 4. PRE-OPERATION SETTINGS AND PROCEDURES MELSEC-A (2) Connection Example of A68DAI/A68DAI-S1 and External Devices A68DAI Motor driver, etc. CH. 1 0 Ω 600 Ω Motor driver, etc. CH. 8 0 Ω 600 Ω +15 V 24 VDC -15 V *1 : Use two-core shielded wiring (twisted). *2 : If noise or ripple is generated by the external wiring, connect a 0.1 to 0.47 µF (25V or more voltage resistance parts) capacitor to the input terminal of the external device.
  • Page 46 Noise filter 24 GDC(-) POINT (1) The cables between the noise filters and A68DAV/DAI must not be bundled with any other cable. (2) The cables between the noise filters and A68DAV/DAI must be as short as possible. 4 − 10...

  • Page 47: Programming

    5. PROGRAMMING Programming Procedure Program data transfer between the CPU and A68DAV/DAI as indicated in Fig. 5.1. When utilizing the program example introduced in this chapter for an actual system, fully verify that there are no problems in the controllability of the target system.

  • Page 48: Sample Program

    The following describes a program used to write a value (0 to 8000) to the digital value setting area (addresses 1 to 4 of the buffer memory) for channels 1 to 4 of the A68DAV/DAI. The value is set with a BCD digital switch. Programming conditions...
  • Page 49 5. PROGRAMMING MELSEC-A Programming WDT error flag Procedure D-A conversion ready flag X080 X081 M9038 Resolution ..multiplication value is H0008 Initial setting set to "2" (1/8000)..H0008 H00F0 Channels 5 to 8 are set as the analog output disabled channel.

  • Page 50: Program For The A68Dav/Dai Loaded In Remote I/O Station

    Program for the A68DAV/DAI loaded in remote I/O station The following program is used to write a value (0 to 8000) defined by the BCD digital switch to channels 1 to 4 (addresses 1 to 4 of buffer memory) of the A68DAV/DAI in a remote I/O station.
  • Page 51 (8) A68DAV/DAI error detection (a) X1D is switched ON to indicate that the A68DAV/DAI is faulty and the RFRP/RTOP instruction cannot be executed. In this case, check the A68DAV/DAI for A68DAV/DAI fault, module loading error, etc.
  • Page 52 5. PROGRAMMING MELSEC-A Programming condition (1) System configuration Master station Power supply module points points Remote I/O station No.1 Power supply module (V/I) X/Y200 ..Allocation of I/O number in the master station X/Y21F (2) Initial settings (a) Digital value resolution ............. "2" (1/8000) (b) Analog output disable channel .........
  • Page 53 5. PROGRAMMING MELSEC-A 3) Channel No.3.............. W113 4) Channel No.4.............. W114 Programming Procedure Detection of an error in remote I/O station 1 (Error detected if bit 0 of M9036 D9228 is "1") ... WAND H0001 D9228 Detection of parameter communications with remote ...
  • Page 54 5. PROGRAMMING MELSEC-A RTOP H0200 W102 X21F Channels 5 to 8 are set ..to the analog output disabled channel. Analog output X21D enable/disable setting Y20F M10 is turned ON at the ..completion of the initial setting. M10 X200 X201 Y210 After the completion of the initial setting, the D-A...

  • Page 55: Program For The A68Dav/Dai Loaded In Remote I/O Station (Use Of The Anacpu Dedicated Instruction)

    The following program is used to write a value (0 to 8000) defined by the BCD digital switch to channels 1 to 4 (addresses 1 to 4 of buffer memory) of the A68DAV/DAI in a remote I/O station when AnACPU dedicated instructions are used.
  • Page 56 5. PROGRAMMING MELSEC-A Initial setting data storage link register 1) Resolution value register ..........W101 2) Analog output enable/disable channel setting data register ........W102 (g) Digital value read data register ........D0 (h) Digital value storage link register 1) Channel No.1.............. W111 2) Channel No.2..............
  • Page 57 5. PROGRAMMING MELSEC-A Programming Procedure When initial setting has not been completed (M5 X000 is OFF), M0 is goes ON if ..the initial setting execution command is turned ON. W101 Initial setting data is set ..Setting initial data to the M →...
  • Page 58 5. PROGRAMMING MELSEC-A LEDB RTOP SUB H0200 Data in W111 to W114 is Writing digital values ..LEDC W111 written to buffer addresses 1 to 4. LEDC LEDR M7 is reset after the ..completion of the writing of digital values. X005 FMOVP W115...

  • Page 59: Troubleshooting

    6. TROUBLESHOOTING MELSEC-A 6. TROUBLESHOOTING Problem conditions and troubleshooting diagnoses for the A68DAV/DAI are given below. For information on the CPU module, see the corresponding CPU User's Manual. When the RUN LED Flashes or Goes OFF (1) When the RUN LED goes OFF:...

  • Page 60: When Analog Values Are Offset Values

    6. TROUBLESHOOTING MELSEC-A (2) When the value of a given channel is 0 V/0 mA: Items to Check Corrective Actions Is the analog output enable/disable channel with its "0 V/0 mA" Confirm the data set in the analog output enable/disable channel analog value set to disable? setting area of the buffer memory.

  • Page 61: Analog Values Are Output Though The Cpu Module Is Set To Stop

    6. TROUBLESHOOTING MELSEC-A Analog Values are Output though the CPU Module is set to STOP (1) When the analog output does not change after setting to STOP: Items to Check Corrective Actions Are the HOLD/CLEAR setting terminals shorted(held)? Open the HOLD/CLEAR setting terminals. (2) When the analog output changes after setting to STOP: Items to Check Corrective Actions...

  • Page 62: When Digital And Analog Values Do Not Match

    Corrective Actions Does the digital value match the analog value? Correct the offset/gain values. Make sure the wiring between the A68DAV/A68DAI and the Are the A68DAV/A68DAI and external devices properly wired? external devices is correct. Recalculate the total amperage for the module installed to the...
  • Page 63 6. TROUBLESHOOTING MELSEC-A POINT If all of the troubleshooting checks do not show problems, or if the prescriped corrective measures do not solve the problem, the A68DAV/DAI hardware might be faulty. Consult a Mitsubishi representative. 6 − 5...

  • Page 64: Appendices

    APPENDICES MELSEC-A APPENDICES APPENDIX 1 Comparison with Other D-A Converter Modules Table 1.1 shows the comparison of A68DAV/DAI and other D-A converter modules. Table 1.1 Comparison List Specifications Item A62DA A62DA-S1 A616DAV/A616DAI A68DAV/A68DAI Maximum -12000 to 12000 ±2000 −4000 to 4000...

  • Page 65: Appendix 2 Dimensions

    APPENDICES MELSEC-A APPENDIX 2 Dimensions A68DAV 4.2 (0.17) M3×0.5×6 2 (0.08) (Terminal screw) 8.6 (0.34) Printer circuit board 250 (9.84) 7.2 (0.28) 6 (0.24) 10 (0.39) (0.71) (0.17) 106 (4.17) 25 (0.98) 131 (5.16) 37.5 (1.48) Unit : mm (in)

  • Page 66: A68Dai

    APPENDICES MELSEC-A A68DAI 4.2 (0.17) M3×0.5×6 2 (0.08) (Terminal screw) (0.34) Printer circuit board 250 (9.84) (0.28) 6 (0.24) 10 (0.39) (0.71) (0.17) 106 (4.17) 25 (0.98) 131 (5.16) 37.5 (1.48) Unit : mm (in) APP − 3...
  • Page 67 APPENDICES MELSEC-A MEMO APP − 4...

  • Page 68: 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 70 Digital-Analog Converter Module Type A68DAV/DAI(S1) User s Manual A68DAV/DAI-U-E MODEL MODEL 13J667 CODE IB(NA)-66285-E(0509)MEE HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN NAGOYA WORKS : 1-14 , YADA-MINAMI 5-CHOME , HIGASHI-KU, NAGOYA , JAPAN When exported from Japan, this manual does not require application to the Ministry of Economy, Trade and Industry for service transaction permission.

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