GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual page 167

6 ACTUAL VALUES
The recorded event displayed for Logic inputs and Virtual Inputs will show the programmed name of the input/output. An
active target display may also be generated as a result of a self-test error. When this occurs, the target message will look
like this:
SELF-TEST ERROR:
<ERROR>
The part in the above display will be one of the following:
<ERROR>
Logic Power Out
Real-Time Clock
DSP Processor
Not Calibrated
For more detail about these errors, refer to the next section. As well, there is an additional message that may appear as a
target message. It looks like this:
SETPOINTS HAVE NOT
BEEN PROGRAMMED!
This message will be placed in the target message queue whenever
to "Not Programmed". This serves as a warning that the relay has not been programmed for the installation and is therefore
not in the in-service state.
The 745 performs self-diagnostics at initialization (after power-up), and continuously thereafter (in a background task). The
tests ensure that every testable unit of the hardware is functioning correctly.
ANY SELF-TEST ERROR INDICATES A SERIOUS PROBLEM REQUIRING SERVICE.
CAUTION
MAJOR SELF-TEST ERRORS:
Upon detection of a major self-test error, the 745:
• disables all protection functionality
• turns on the front panel Self-Test Error LED
• turns off the front panel In Service LED
• de-energizes all output relays, including the Self-Test Relay
• indicates the failure by inserting an appropriate message in the target message queue
• records the failure in the Event Recorder
MINOR SELF-TEST ERRORS:
Upon detection of a minor self-test error, the 745:
• turns on the front panel Self-Test Error LED
• de-energizes the Self-Test Relay
• indicates the failure by inserting an appropriate message in the target message queue
• records the failure in the Event Recorder
GE Multilin
Courtesy of NationalSwitchgear.com
Analog Output Emulation Software
Bad Xfmr Settings Flexlogic Eqn
EEPROM Memory Access Denied
Int Temperature IRIG-B Signal
745 Transformer Management Relay
6.6 TARGET AND FLASH MESSAGES
S1 745 SETUP INSTALLATION
6.6.2 SELF-TEST ERRORS
is set
745 SETPOINTS
6
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