- General Electric Computer Accessories User Manual

GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 2 Faults and Troubleshooting •
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• 2-13
No. Name Type Description
57 DB resistor hot Alarm
The DB resistor hot alarm occurs when the dynamic braking resistor thermal
model indicates that the dynamic braking package is approaching its rating.
Primary causes:
Incorrect configuration of DB thermal model.
DB resistor package is marginal for application.
58 Motor reac parms
bad
Trip The Motor reac parms bad trip fault occurs when the primary motor reactance
parameters have values that are not appropriate relative to one another.
Primary causes:
Internal calculations are performed using Starting react Xst, Magnetizing react
Xm, Stator lkg react X1,and Rotor lkg react X2. The relationship between
these parameters should be: (Rotor lkg react X2 || Magnetizing react Xm) +
Stator lkg react X1 > Starting react Xst.
This should be corrected before attempting to run the drive.
63 BICM card over
temp
Fault The BICM card over temp trip fault occurs when the sensor on BICM
measures a temperature above 60C. The drive control electronics cannot
operate reliably above this temperature. Reset the fault after the temperature
drops below 60C.
BIC ambient temp is the variable being monitored to generate this fault.
Primary causes:
Blocked air flow to control rack.
Control rack cooling fan failure.
Ambient temperature is too high.
Possible board failures:
BICM
64
HtSink DB over
temp
Trip
The HtSink DB over temp trip fault occurs when the dynamic brake heatsink
temperature (variable DB heat sink temp) is too high.
Related functions:
Heatsink Thermal Protection
65 HtSink DS over
temp
Trip The HtSink DS over temp trip fault occurs when the diode source heatsink
temperature (variable DS heat sink temp) is too high.
The bridge turns off in response to the fault to protect the IGBTs from thermal
damage.
Primary causes:
Airflow to the heatsink is not sufficient.
Blower is not operating correctly.
Possible board failures:
BICM
Related functions:
Heatsink Thermal Protection
66 HtSink A over temp Trip
The HtSink A over temp trip fault occurs when heatsink A temperature
(variable Heat sink A temp) is too high.
Related functions:
Heatsink Thermal Protection
67 HtSink B over temp Trip The HtSink B over temp trip fault occurs when heatsink B temperature
(variable Heat sink B temp) is too high.
Related functions:
Heatsink Thermal Protection