Publication 2364F-5.05 - March 1999
Troubleshooting Faults and Warnings
3-9
40
P180 bit 8
DPRAM Error
An error has been detected in the dual port
RAM between the host processor and the
DSP.
Clear the fault and try resetting/restarting the RGU. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
41
P180 bit 9
No Vloop Tic
W
The primary clock for the host processor
(which is used to synchronize with the DSP)
is missing.
The unit switches to the internal timer, but synchonization between
the host processor and the DSP is lost. Try restarting the RGU, verify
that all connections to the main control board are in place, and
check the main control board for any obvious damage or any debris
which may be shorting circuitry. If necessary, try reinstalling the
firmware. Replace the board and/or send the board in for repair if
the problem cannot be resolved.
42
P180 bit 10
No Fast Task
A watchdog error has been detected in the
main control loop task of the host processor.
Clear the fault and try resetting/restarting the RGU. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
43
P180 bit 11
No Bgnd Task
A watchdog error has been detected in a
background task of the host processor.
Clear the fault and try resetting/restarting the RGU. Verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
44
P180 bit 12
Addr Bus Err
An address bus error has been detected on
the main control board.
Clear the fault and try resetting/restarting the RGU, verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware (or
upgrade to the latest available firmware). Replace the board and/or
send the board in for repair if the problem cannot be resolved.
45
P180 bit 13
Data Bus Err
A data bus error has been detected on the
main control board.
Clear the fault and try resetting/restarting the RGU, verify that all
connections to the main control board are in place, and check the
main control board for any obvious damage or any debris which may
be shorting circuitry. If necessary, try reinstalling the firmware.
Replace the board and/or send the board in for repair if the problem
cannot be resolved.
46
P180 bit 14
Line Low
W
The input line voltage has fallen below the
minimum threshold (as defined in P26).
Verify the parameter setup. Check the Frame Catalog Number (P4),
the Rated AC Line Current (P11), and the AC Line Low Setting (P26).
Verify that the current feedback burden resistors (on the isolation
board) are appropriately sized.
47
P180 bit 15
Line High
W
The input line voltage has exceeded the
maximum threshold (as defined in P27).
Verify the parameter setup. Check the Frame Catalog Number (P4),
the Rated AC Line Current (P11), and the AC Line High Setting (P27).
Check that the current feedback burden resistors (on the isolation
board) are appropriately sized.
48
P183 bit 0
I2t Warnings
W
The I2t wire protection has evaluated the
heatsink to power module junction
temperatures, and is indicating that the
temperature is at half of the trip point.
The internal wiring may be at risk of overheating. Check that all the
door fans are operating properly, and verify that the RGU is operating
at the appropriately derated current (see the specification appendix
of 2364F-5.01). Verify that the RGU is not operating in overload for
an extended period of time.
Note:
‘W’ indicates that the condition is normally reported as a warning, rather than a fault.
Number Fault
Indicates
Action
