GE D90 Plus Instruction Manual page 544

SELF-TESTS
536
CPU CARD TROUBLE
Description: There may be a problem with the CPU card.
Severity: Protection is available.
If this message appears, cycle the control power If the alarm recurs, contact GE Grid
Solutions.
DELAYED AUTOMATION EXECUTION
Description: Execution of the automation logic is longer than specified.
Severity: Protection is available. Automation logic may not produce expected results.
If this message appears, review the automation logic to confirm correct programming.
Move less critical tasks to an automation block with a slower scan.
ETHERNET PORT 1 FAILURE, ETHERNET PORT 2 FAILURE, ETHERNET PORT 3 FAILURE
Description: The indicated Ethernet port is not connected to a LAN.
Severity: Protection is available. Remote communications may not be available.
If this message appears, ensure that the external Ethernet switch is operational and
properly configured. Check for a link light at both ends of the Ethernet cable. If there is
no link light, replace the Ethernet cable. If these steps do not solve the problem, replace
the communications module.
FILE SYSTEM TROUBLE
Description: System files are missing on the flash disk during the boot process or files are
deleted or modified after the system was booted.
Severity: Protection is available.
If this message appears, repeat the firmware upgrade process.
FRONT PANEL MISMATCH
Description: The order code does not match the front panel type.
Severity: Protection is available.
If this message appears, update the order code to clear the self-test error.
FRONT PANEL TROUBLE
Description: An error has been encountered on the front panel.
Severity: Protection is available.
If this message appears, update the order code to clear the self-test error.
HIGH TEMPERATURE
Description: The ambient temperature is outside the specifications.
Severity: Relay remains operational.
If this message appears, ensure proper ventilation or heating is provided.
IO SLOT FIRMWARE MISMATCH
Description: There a firmware mismatch between the input/output card in the indicated
slot and the CPU.
Severity: Protection is not available, and relay is not operational.
If this message appears, contact GE Grid Solutions. It may be necessary to replace the
specified input/output module or update its firmware.
IRIG-B FAILURE
Description: The IRIG-B input signal is not present.
Severity: Protection is available. Timestamping of events may not be accurate.
If this message appears, ensure that the IRIG-B receiver is operational and properly
configured. Ensure that the IRIG-B cable is connected. Check cable integrity (that is, look
for physical damage or perform a continuity test). Check the input signal level.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 14: TESTING