Self-Test Warnings - GE 469 Instruction Manual

4.1.8

Self-Test Warnings

4–8
key, followed by the

MESSAGE
additional information and a complete list of diagnostic messages, refer to Diagnostic
Messages in Chapter 6.
The 469 relay performs self test diagnostics at initialization (after power up) and
continuously as a background task to ensure the hardware and software is functioning
correctly. Self-test warnings indicate either a maintenance alert, or a minor or major
problem. Maintenance alerts and minor problems are problems that does not compromise
motor protection. Major problems are very serious problems that compromise all aspects
of relay operation. Upon detection of either a minor or a major problem the relay will:
• De-energize the self-test warning relay
• Light the self-test warning LED
• Flash a diagnostic message periodically on the display screen
Upon detection of a maintenance alert, the relay will flash a diagnostic message on the
screen, or record an event. The self-test relay remains energized and the service LED
remains off.
Message
Self-Test Warning 1
Replace Immediately
Self-Test Warning 2
Replace Immediately
Self-Test Warning 3
Replace Immediately
Self-Test Warning 5
Replace Immediately
Self-Test Warning 6
Replace Immediately
Self-Test Warning 7
Replace Immediately
Self-Test Warning 8
Replace Immediately
Self-Test Warning 9
key, to scroll through the messages. For

MESSAGE
Table 4–1: Self-Test Warnings
Severity
Caused by detection of a corrupted location in the
program memory as determined by a CRC error
Major
check. Any function of the relay is susceptible to
malfunction from this failure.
Caused by a failure of the analog to digital
Major converter A/D1. The integrity of system input
measurements is affected by this failure.
Caused by a failure of the analog to digital
Major converter A/D2. The integrity of system input
measurements is affected by this failure.
Caused by out of range reading of self-test
Major RTD 13. The integrity of system input
measurements is affected by this failure.
Caused by out of range reading of self-test
Major RTD 14. The integrity of system input
measurements is affected by this failure.
Caused by out of range reading of self-test
Major RTD 15. The integrity of system input
measurements is affected by this failure.
Caused by out of range reading of self-test
Major RTD 16. The integrity of system input
measurements is affected by this failure.
Occurs if the microprocessor has reset
Maintenance unexpectedly and system input measurements
Alert were interrupted for at least 2 seconds. This
warning appears in the event recorder.
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 4: INTERFACES
Failure description