Relay Self-Tests - GE G30 Instruction Manual

7 COMMANDS AND TARGETS
The range of variables for the target messages is described below. Phase information will be included if applicable. If a tar-
get message status changes, the status with the highest priority will be displayed.
Table 7–1: TARGET MESSAGE PRIORITY STATUS
PRIORITY ACTIVE STATUS
1 OP
2 PKP
3 LATCHED
If a self test error is detected, a message appears indicating the cause of the error. For example
indicates that the minimal relay settings have not been programmed.
a) DESCRIPTION
The relay performs a number of self-test diagnostic checks to ensure device integrity. The two types of self-tests (major and
minor) are listed in the tables below. When either type of self-test error occurs, the Trouble LED Indicator will turn on and a
target message displayed. All errors record an event in the event recorder. Latched errors can be cleared by pressing the
RESET key, providing the condition is no longer present.
Major self-test errors also result in the following:
• The critical fail relay on the power supply module is de-energized.
• All other output relays are de-energized and are prevented from further operation.
• The faceplate In Service LED indicator is turned off.
• A
RELAY OUT OF SERVICE
b) MAJOR SELF-TEST ERROR MESSAGES
The major self-test errors are outlined in this section.
INCOMPATIBLE H/W:
Contact Factory (xxx)
• Latched target message: Yes.
• Description of problem: One or more installed hardware modules is not compatible with the G30 order code.
• How often the test is performed: Module dependent.
• What to do: Contact the factory and supply the failure code noted in the display. The "xxx" text identifies the failed mod-
ule (for example, F8L).
EQUIPMENT MISMATCH:
with 2nd line detail
• Latched target message: No.
• Description of problem: The configuration of modules does not match the order code stored in the G30.
• How often the test is performed: On power up. Afterwards, the backplane is checked for missing cards every five sec-
onds.
• What to do: Check all modules against the order code, ensure they are inserted properly, and cycle control power. If
the problem persists, contact the factory.
FLEXLOGIC ERROR:
with 2nd line detail
• Latched target message: No.
• Description of problem: A FlexLogic equation is incorrect.
GE Multilin
DESCRIPTION
element operated and still picked up
element picked up and timed out
element had operated but has dropped out
event is recorded.
G30 Generator Protection System
7.1 COMMANDS
UNIT NOT PROGRAMMED

7.1.9 RELAY SELF-TESTS

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