GE DGP Series, Instruction Manual

Page: 168 / 278

6-
6
DGP Digital Generator Protection System GE Power Management
6.3 TROUBLESHOOTING 6 SERVICING
6
6.3.5 SERVICING SYSTEM STATUS FAILURES
A system failure is one that indicates a failure of a power system input, or indicates that the relay has been dis-
abled by a user command. They are indicated by the non-critical alarm contacts, by a red LED, or by the critical
alarm contacts. However, no MMI display is provided until the INFORMATION–STATUS command is used.
Turn off then re-apply the DC input power. The non-critical alarm contact (N.O.) will be closed if the failure still
exists. Use the INFORMATION–STATUS to determine the cause of the trouble.
Table 6–4: SYSTEM STATUS ERROR MESSAGES
SYSTEM STATUS ERROR INDICATION DESCRIPTION
WARN NCA WARN condition, press up arrow
FAIL CA/LED FAIL condition, press up arrow
MISC LED Miscellaneous condition, press up arrow
Note: LED = red LED on the MMI; NCA = energizing the non-critical alarm relay
CA = de-energizing the critical alarm relay.
Table 6–5: MISCELLANEOUS MESSAGES
MISCELLANEOUS MESSAGES DESCRIPTION INDICATION
PROT OFF Protection off LED
DIS OUTS Outputs Disabled LED
RELAY TEST Relay in Test Mode LED
D O TEST Digital Output test LED