GE Grid Solutions
D25
User's Manual
GE Information
994-0081-3.00-21
145
Run-time and Startup Problems,
Continued
Symptom
Possible Causes
Suggestions
Queued Requests
Cleared
Controls Switch is in the Local
position. D25 Plant I/O Subsystem
monitoring detects that the supply
voltage is not available.
The D25 Plant I/O Subsystem
monitoring detects a conflict
between desired and actual coil
status (a coil is not energized when
it should be).
Move the Controls Switch
to the Local position.
Verify supply voltage
source.
Verify coil status.
System Hangs
Watchdog failure
Plant I/O Watchdog
Failure
Plant I/O Subsystem integrity is
faulty.
Remove and restore
power to the D25.
Digital Output Points
are Disabled
The Local/Remote switch is in the
Local position.
Move the Local/Remote
switch to the Remote
position.
Digital Input Points Do
Not Register
Incorrect wiring, Protection fuse is
blown
Verify wiring, verify fuse is
in place and is in good
condition
Communication Watch
Dog Failure
Internal system monitors detect
serious errors.
D25 Does Not Operate
Remotely
The Local/Remote switch is in the
Remote position, but the D25 does
not contain a Digital output Card, or
the Digital output Card malfunctions.
Verify that a Digital output
Card is installed.
Verify that the Digital
output Card functions
correctly.
Coil Status Check
The D25 Plant I/O Subsystem
monitoring detects a conflict
between desired and actual coil
status.
Verify coil status.
Control Voltage Not
Available
Output has failed.
Hardware Watchdog
Digital output coils are not in the
state requested by the software
Plant I/O Subsystem failure
Digital Output Failure
Control voltage not available, coil
status check, hardware watchdog
error condition, or protection fuse is
blown
RAM Check Failure
System start-up fails
Use WESMAINT II+ to
view the error message.
NVRAM Check Failure System start-up fails
Use WESMAINT II+ to
view the error message.
Application Checksum
Failure
System start-up fails
Use WESMAINT II+ to
view the error message.
BootROM Checksum
Failure
System start-up fails
Use WESMAINT II+ to
view the error message.
Summary of Contents for D25
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