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GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 2 Faults and Troubleshooting
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2-27
No. Name Type Description
125 AS3 IGDM card flt Trip
The AS3 IGDM card flt trip fault is hardware generated. The trip fault occurs
when the bridge control has lost communication with the indicated IGDM
module. This communication occurs via fiber optic cable between the FOSA
and the IGDM. During normal operation the IGDM transmits continuous light
back to FOSA. Any loss of this signal triggers this trip fault.
Several unrelated situations can cause the light to stop transmitting. Run the
Cell Test Wizard to identify any failed devices.
Primary causes:
CPFP power supply failure
IGDM failure
A desat fault on the indicated IGBT was detected.
Possible board failures:
IGDM
CPFP
FOSA
BICM
Possible wiring faults:
Fiber optic connection between FOSA and IGDM
Power distribution wiring from CPFP.
126 AS4 IGDM card flt Trip The AS4 IGDM card flt trip fault is hardware generated. The trip fault occurs
when the bridge control has lost communication with the indicated IGDM
module. This communication occurs via fiber optic cable between the FOSA
and the IGDM. During normal operation the IGDM transmits continuous light
back to FOSA. Any loss of this signal triggers this trip fault.
Several unrelated situations can cause the light to stop transmitting. Run the
Cell Test Wizard to identify any failed devices.
Primary causes:
CPFP power supply failure
IGDM failure
A desat fault on the indicated IGBT was detected.
Possible board failures:
IGDM
CPFP
FOSA
BICM
Possible wiring faults:
Fiber optic connection between FOSA and IGDM
Power distribution wiring from CPFP.