GE D25 User Manual page 145

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