GE D90 Plus Instruction Manual page 633

CHAPTER 14: TESTING
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
The minor self-test error messages are indicated in yellow on the annunciator display and
are described as follows.
AC SLOT F HIGH TEMP
AC SLOT J HIGH TEMP
Description: The ambient temperature is outside the specifications for the AC card in the
indicated slot.
Severity: Relay remains operational.
If this message appears, ensure proper ventilation.
CH 1 DIRECT DEVICE OFF
CH 2 DIRECT DEVICE OFF
Description: A direct device is specified in the configuration but is not connected to the
network. This self-test should occur within 2 seconds of disconnecting the device.
Severity: Protection is available. Direct input/output messaging with the offline device is
not available.
If this message appears, check that all devices that are connected to the direct input/
output network are properly configured. Check the direct input/output wiring.
CH 1 DIRECT RING BREAK
CH 2 DIRECT RING BREAK
Description: The direct input/output settings are configured for a ring, but the connection
is not in a ring. This self-test is asserted approximately 2 seconds after a disconnection
occurs in a ring configuration.
Severity: Protection and direct input/output messaging is available. However, there is no
redundant path available.
If this message appears, check the direct input/output configuration and wiring.
COMMUNICATION CARD TROUBLE
Description: An error has been encountered on the communications module.
Severity: Protection is available.
If this message appears, update the order code to clear the self-test error.
COMM HIGH TRAFFIC
Plus
Description: The D90
Severity: Protection is available.
This message indicates that the D90
more Ethernet ports through the network filtering settings.
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.
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.
is actively limiting IP bandwidth usage.
Plus
is actively limiting bandwidth usage in one or
SELF-TESTS
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