Mitsubishi Electric MELCEC Q Series - Flow for Actions When the ERR. LED Is Flashing

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11. TROUBLESHOOTING

11.2.7 Flow for actions when the ERR. LED is flashing

The flow when the ERR. LED is flashing during operation is described.

The ERR. LED

is flashing.

Is the details

of the special register

D9124 "0"?

YES

Reset the annunciator coil

that is on using the RST

F instruction.

Complete

Describe the problem to the

nearest service center, retail

store, or corporate office, and

obtain advice.

Main Page

Default Chapter14
- Table of Contents14
1 Overview20
- Features21
2 SYSTEM CONFIGURATION 2 - 1 to22
- System Configuration22
- Precautions When Configuring the System23
- System Equipment29
- System Configuration Overview29
  - QCPU-A System44
3 Specifications45
4 Cpu Module47
- Performance Specifications47
- Parameter Setting Ranges61
- Function List77
- Functions Added to QCPU-A79
- Handling Precautions87
- Part Names and Settings89
5 POWER SUPPLY MODULE 5 - 1 to93
- Specifications93
- Part Names95
6 Base Unit and Extension Cable97
- Specifications97
  - Base Unit Specifications97
  - Extension Cables Specifications98
- Part Names and Settings99
- Setting the Extension Stage Numbers102
- Voltage Drop When an Extension Base Unit Is Used103
7 Memory Card and Battery105
- Memory Card105
  - Specifications105
- Battery Specifications (CPU Module and Memory Card Batteries)106
  - Specifications106
  - Handling Precautions107
- Handling Memory Cards108
- Part Names of Memory Card109
- Installing/Removing a Memory Card110
- Installing Batteries (CPU Module and Memory Card Batteries)111
- Battery Replacement112
  - Battery Life113
  - Battery Replacement Procedure115
8 EMC and LOW VOLTAGE DIRECTIVES 8 - 1 to118
- Requirements for Compliance with EMC Directive118
- Requirements for Compliance with Low Voltage Directive129
9 Loading and Installation133
- Module Installation133
- Concept of Fail Safe Circuit147
- Installation Environment153
- Calculation Method of Heat Amount Generated by the Programmable Controller154
- Wiring156
  - Wiring Precautions156
  - Wiring to Module Terminals161
- Precautions When Connecting the Uninterruptible Power Supply (UPS)162
10 Maintenance and Inspection163
- Daily Inspection164
- Periodic Inspection165
- Operating a CPU Module after Being Stored Without a Battery166
- Operating a CPU Module after Being Stored over the Battery Life167
11 Troubleshooting168
- Fundamentals of Troubleshooting168
- Error Code List179
  - Procedure to Read an Error Code179
  - Error Code List for the QCPU-A (a Mode)180
- Fault Examples with I/O Modules189
  - Faults with the Input Circuit and the Corrective Actions189
  - Faults in the Output Circuit191
Appendix 1 Instruction List195
Appendix 1.1 Precautions for Write During RUN of a Dedicated Instruction208
Appendix 2 Lists of Special Relays and Special Registers209
Appendix 2.2 Special Registers221
Appendix 3 Peripheral Device240
Appendix 4 Precautions for Utilizing the Existing Sequence Programs for the QCPU-A242
Appendix 4.1 Instructions with Different Specifications243
Appendix 4.2 Special Relays and Special Registers with Different Specifications244
Appendix 4.4 I/O Control Mode245
Appendix 4.5 Microcomputer Program246
Appendix 4.6 Index Register Processing247
Appendix 5 External Dimensions248
Appendix 5.2 A1S61PN, A1S62PN and A1S63P Power Supply Module249
Appendix 5.3 Base Unit250
Appendix 6 Transportation Precautions252
Appendix 6.2 Transportation Guidelines253
Appendix 7 Handling of Batteries and Devices with Built-In Batteries in EU Member States254
Appendix 7.2 Exportation Precautions255

Mitsubishi Electric MELCEC Q Series - Flow for Actions When the ERR. LED Is Flashing

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