GE Industrial Solutions GPS 4812_24 - Manual (Page 121)

Galaxy Power System 4812/24
Issue 9 Januray 2008 Troubleshooting Vector Systems 14 - 9
Minor RECTIFIER FAIL ALM HO High output
voltage:
•Rectifier high
voltage
shutdown
•Internal
rectifier failure
1. Verify the configurable HV
thresholds in the controller.
2. Toggle the ON/STBY switch
into the STBY position and
then back into the ON position.
3. If the problem is not corrected,
replace the rectifier.
Minor RECTIFIER FAIL ALM TA Thermal alarm:
•Excessive
ambient
temperature
•Internal
rectifier failure
1. Verify that there is no
obstruction of the fan inlet.
2. Toggle the ON/STBY switch
into the STBY position and
then back into the ON position.
3. If the problem is not corrected,
replace the rectifier.
Minor RECTIFIER FAIL ALM FSE Fuse alarm:
•DC fuse open
•Internal
rectifier failure
1. Toggle the ON/STBY switch
into the STBY position and
then back into the ON position.
2. If the problem is not corrected,
replace the rectifier.
Minor RECTIFIER FAIL ALM LO Low output
voltage:
•Excessive
output current
•Internal
rectifier failure
1. Toggle the ON/STBY switch
into the STBY position and
then back into the ON position.
2. If the problem is not corrected,
replace the rectifier.
Minor RECTIFIER FAIL ALM ICS
IP5
IP6
IP7 Internal rectifier
failure 1. Place the ac circuit breaker for
the rectifier in the OFF
position.
2. Remove the rectifier from the
shelf.
3. Wait for 30 seconds or until all
front panel display LEDs have
extinguished.
4. Replace the rectifier.
5. Return the ac breaker to the
ON position.
6. Place the rectifier ON/STBY
switch into the ON position.
7. If the problem is not corrected,
replace the rectifier.
Table 14-E: Rectifier Related Alarms
(See Figures 12-6 and 12-8)
Controller
Alarm
Status
Vector
Controller Display
Rectifier
LED
Rectifier
Display
Possible
Problem(s)
Possible Solution(s)