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Mitsubishi Electric MELSEC-A Series User Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
1 Introduction
General Description of Operation
ON/OFF Data Communication between the A2C and the Remote I/O Module
Features
General Terms and Abbreviations
Reference Manuals
2 System Configuration
Overall Configuration
Notes on System Construction
System Equipment
Modules Which Can be Connected to the A2CCPU
Peripheral Devices
3 General Specifications
4 A2Ccpu
Performance
Repeated Operation Processing
In~Ial Processing
END Processing
Timer Processing and Accuracy
Counter Processing and Maximum Counting Speed
Operation Processing at Momentary Power Failure
Scan Time
Watch Dog Timer (Wdl)
RUN. STOP. PAUSE Operation Processing
Functions
Constant Scan
Power Failure Compensation for Device Data in the A2C (LATCH Function)
Running and Stopping the A2C from External Devices (Remote RUN/STOP Function)
Status Latch
Sampling Trace
Offline Sw~Ch Function
Setting Priority for ERROR LED Indication
Control Functions of Remote I/O Modules and Remote Terminal Modules
4.2.10 Output from the ERR Terminals
Fault Detection
Fault Detection with Annunciator (F)
Memory Capacity Setting
Operation Mode at an Occurrence of Error
STOP -+ RUN Output Mode
Entry Code Registration
Print Title Registration
Devices
Device List
Instructions
Sequence Instructions
Basic Instructions
Application Instructions
Precautions on Handling
Part Identification 4 - N
Part Identification
4.10.1 External View of A2CCPUP21/R21
4.10.2 Setting for MELSECNET Data Link
5 MEMORY Ica, BATTERY, CABLES and DIN ADAPTER
Memory Ics
Specifications
Handling Instructions
Installation
Battery
Handling Instructions
Cables
DIN Adapter
Specifications
Handling Instructions
Fixing a DIN Adapter to a Module
Mounting to the DIN Rail
6 Loading and Installation 6 -1
Fail-Safe Circuit
Installation Environment
Calculation of Heat Generated by the A2C System
Wiring
Wiring Instructions
Connection between Modules
Installing the A2CCPU
7 Test Run
Check Points before Test Run
Test Run Procedures
8 Maintenance and Inspection
Daily Inspection
Periodic Inspection
Replacement of Battery
Battery Ike
Replacing Procedures
9 Troubleshooting
Basic Troubleshooting
Troubleshooting Flow Charts
Flow Chart Used When "POWER" LED of the A2CCPU Has Turned off
Flow Chart Used When "RUN" LED of the A2CCPU Has Turned off
Flow Chart Used When "RUN" LED of the A2CCPU Flickers
Flow Chart Used When "ERROR" LED Has Turned on
Flow Chart Used When "ERROR" LED of the A2CCPU Flickers
Flow Chart Used When "RD/SD" Leos of the A2CCPU Do Not Flicker
Flow Chart Used When Output Load of Output Module Does Not Turn on
Error Code Ust
Error Code List
App
APPENDIX 2 Ustof Specialrelays
APPENDIX 3 List of Special Registers APP
APPENDIX 4 Instructions for Use with Peripheral Devices APP
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Table of Contents
Troubleshooting
TROUBLESHOOTING
160
Troubleshooting flow charts
161
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This manual is also suitable for:
Melsec-a a2ccpu
Melsec-a a2ccpup21
Melsec-a a6din3c
Melsec-a a2ccpur21
Melsec-a a6din2c
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