ABB 500 - Page 61

Chapter 4 - Signals and Troubleshooting
DCS 500B / DCP 500B Operating Instructions
IV A 4 - 9
Code
seven
segm.
display
Text on
LCD of control panel
CDP 31x
Definition /
Action
Status
signal
(FAULT_WORD_1/2)
Remark
field weakening range too big / threshold
too high
Check: - Do selection parameters match
the field exciter (field supply)?
- Field exciter, it´s supply, cable and
field winding;
- Take this error message at the data
logger as a trigger condition and
record signals 11302 and 11203
- Status/level of acknowledge signal.
F 40
No ext. FAN ack.
No acknowledge from FAN of motor
Check: - Was input for acknowledge
signal (parameter
[P 911]) used?
- Contactor circuit/supply for fan of
motor;
- Status of binary inputs/outputs
(DI/DO) on SDCS-IOB-1/2 board.
11102 bit 6 (1)
F 41
No main cont. ack.
Missing main contactor acknowledge
Check: - Switch-ON/-OFF sequence
correct?
- Status of binary input DI for ac-
knowledge signal and of ACK
MAIN CONT (
[P 912]) after main
contactor is closed;
- Status of binary output DO resp.
of auxiliary contactor (relay)
closing the main contactor after
ON/OFF command.
11102 bit 7 (3)
F 42
Field ex.1 not OK
FIELD EXCITER 1 (field supply 1) status is not
O.K.
A fault was found during self-diagnosis of
field exciter {see
[11203])}
Check: - Field exciter operation;
change the unit, if necessary.
11102 bit 12 (1)
F 43
Field ex.2 not OK
FIELD EXCITER 2 (field supply 2) status is not
O.K.
{See Fault Code
F 42}
11102 bit 13 (1)