ABB 500 - Page 58

Chapter 4 - Signals and Troubleshooting
IV A 4 - 6 DCS 500B / DCP 500B Operating Instructions
Code
seven
segm.
display
Text on
LCD of control panel
CDP 31x
Definition /
Action
Status
signal
(FAULT_WORD_1/2)
Remark
F 20
Local & discon-
nected
No communication between CDP 31x/CMT
and DCS 500B / DCF 500B or DCP 500B in lo-
cal control mode
(LOCAL)
Check: - Connection cable between
CDP 31x – DCS 500 / DCP 500
(unplug connection cable from
CDP 31x and plug in again);
- Communication board SNAT 6xx
and appropriate programm O.K.?
- Local mode terminated when
panel/PC was removed?
11102 bit 11 (1)
Self re-
setting
F 21
Ext.Overvolt.Fault
Overvoltage protection DCF 506 has acted
There was an overvoltage condition in the
DC circuit of the field supply, which had been
limited by the activation of a free wheeling
circuit.
Check: - Power wiring of the field supply
- Control logic according to wiring
example?
- Does PP_DI_OVP [1216] has been
connected to a binary input?
- Setting of OVP_SELECT [1217]
correct? (see Alarm 121)
11103 bit 12 (1)
S21.232
and
higher
F 23
Motor stalled
Motor stalled
While starting the motor the current exceeded
the value of parameter
[P 2207] for a time
longer than parameter
[P 2208] and the speed
feedback value was below parameter
[P 2206].
Check: - Motor stalled?
- Load changed during start?
- Correct field current?
- Current/torque limitation;
- Parameter settings
[P 22xx].
11102 bit 14 (3)
F 27
Motor 2 overload
Overload of MOTOR 2 (Thermal model 2).
{see Fault Code F 7}
11101 bit 9 (2)