Mitsubishi Electric NZ2MFB2-16A

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112

11 TROUBLESHOOTING

11.4 Examples of Troubles with the I/O Module

A load momentarily turns on from off when the system is powered off

■Cause

When an inductive load is connected, [2] Load may turn on from off due to a sneak current of back EMF at [1] Shutoff.

OFF

COM+

CTL-

COM-

CTL+

[2]

Load

Output module

- Back electromotive force + [3]

+ Back electromotive force - [3]

Output module

Sink output

[1] Shut off

Source output

Main Page

Default Chapter3
- Safety Precautions3
- Conditions of Use for the Product7
- Introduction8
- Table of Contents9
- Relevant Manuals11
- Generic Terms and Abbreviations12
- Terms12
Chapter 1 Product Lineup13
- Input Module13
- Output Module13
- I/O Combined Module14
Chapter 2 Part Names15
Chapter 3 Specifications17
- General Specifications17
- Performance Specifications18
- Function List64
- List of Functions of each Module64
Chapter 4 Procedures before Operation65
Chapter 5 System Configuration67
Chapter 6 Installation and Wiring69
- Before Using the I/O Modules69
  - Input Modules69
  - Output Module70
- Setting Switch75
  - IP Address Setting Switch Setting75
  - Function Setting Switch Setting78
- Installation Environment and Installation Position79
- Installation81
  - Mounting the Module on a DIN Rail81
- Wiring83
Chapter 7 Parameter Setting90
- Network Configuration Setting90
Chapter 8 Functions92
- Input Response Time Setting Function92
- Output HOLD/CLEAR Setting Function93
- Protection Function94
- SLMP Communication Function95
Chapter 9 Programming96
- Precautions for Programming96
- Program Example97
Chapter 10 Maintenance and Inspection101
Chapter 11 Troubleshooting103
- Checking the Leds103
- CC-Link IE Field Network Basic Diagnostics105
- Troubleshooting by Symptom106
- Examples of Troubles with the I/O Module107
  - Troubleshooting for Input Circuit107
  - Troubleshooting for Output Circuit112
- Method for Checking Errors118
- Error Code List119
  - I/O Module Specific Error119
  - CC-Link IE Field Network Basic Related Error119
- Appendices120
Appendix 1 Remote I/O Signal120
- List of Remote I/O Signals120
- Details of Remote Input Signals125
- Details of Remote Output Signals125
Appendix 2 Remote Register126
- List of Remote Register126
Appendix 3 Setting IP Addresses and Subnet Masks127
Appendix 4 Diagnostic Information of Slave Station129
- Diagnostic Information List129
- Diagnostic Information Details130
Appendix 5 Processing Time133
Appendix 6 EMC and Low Voltage Directives134
- Measures to Comply with the EMC Directive134
- Requirements to Compliance with the Low Voltage Directive140
Appendix 7 How to Check Serial Number and Function Version141
Appendix 8 External Dimensions142
- Index144
- Revisions146
- Warranty147
- Trademarks148

Mitsubishi Electric NZ2MFB2-16A - Page 114

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