Delta AH Series

9-1
9
Chapter 9 Troubleshooting
Table of Contents
9.1 Inspection and Troubleshooting ................................................................. 9-3
9.1.1 Basic Inspection ........................................................................................ 9-3
9.1.2 Clearing the Error State .............................................................................. 9-3
9.1.3 Troubleshooting Procedure .......................................................................... 9-4
9.1.4 Viewing Error Logs ..................................................................................... 9-5
9.2 Error Codes and Indicators ......................................................................... 9-6
9.2.1. AHxxEMC-5A ............................................................................................. 9-7
9.2.2. Analog I/O Modules and Temperature Measurement Modules ........................ 9-28
9.2.3. AH02HC-5A/AH04HC-5A ........................................................................... 9-30
9.2.4. AH05PM-5A/AH10PM-5A/AH15PM-5A ......................................................... 9-30
9.2.5. AH20MC-5A ............................................................................................ 9-32
9.2.6. AH10EN-5A/AH15EN-5A ........................................................................... 9-33
9.2.7. AH10SCM-5A/AH15SCM-5A ....................................................................... 9-33
9.2.8. AH10DNET-5A ......................................................................................... 9-33
9.2.9. AH10PFBM-5A ......................................................................................... 9-34
9.2.10. AH10PFBS-5A .......................................................................................... 9-34
9.2.11. AH10COPM-5A ......................................................................................... 9-35
9.3 Troubleshooting for CPU ........................................................................... 9-36
9.3.1. ERROR Indicator ON ................................................................................. 9-36
9.3.2. ERROR Indicator Blinking .......................................................................... 9-38
9.3.3. BUS FAULT Indicator ON ........................................................................... 9-55
9.3.4. BUS FAULT Indicator Blinking .................................................................... 9-56
9.3.5. Others .................................................................................................... 9-57
9.4 Tr
oubleshooting for I/O Modules ............................................................. 9-69
9.4.1. Analog I/O Modules and Temperature Measurement Modules ........................ 9-69
9.4.2. AH02HC-5A/AH04HC-5A ........................................................................... 9-72
9.4.3. AH05PM-5A/AH10PM-5A/AH15PM-5A ......................................................... 9-74
9.4.4. AH20MC-5A ............................................................................................ 9-76
9.4.5. AH10EN-5A/AH15EN-5A ........................................................................... 9-77
9.4.6. AH10SCM-5A/AH15SCM-5A ....................................................................... 9-78
9.4.7. AH10DNET-5A ......................................................................................... 9-78
9.4.8. AH10PFBM-5A ......................................................................................... 9-79