ABB 500 Operating Instructions Manual page 58

Chapter 4 - Signals and Troubleshooting
Code Text on
seven
LCD of control panel
segm.
CDP 31x
display
F 20 Local & discon-
nected
F 21 Ext.Overvolt.Fault
F 23 Motor stalled
F 27 Motor 2 overload
IV A
4 - 6
Definition /
Action
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?
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)
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
Overload of MOTOR 2
{see Fault Code F 7 }
3ADW000055R0401_DCS500B_Operating Instruction_e_d
[P 22xx].
(Thermal model ).
2
DCS 500B / DCP 500B Operating Instructions
Status Remark
signal
(FAULT_WORD_1/2)
11102 bit 11 (1)
Self re-
setting
11103 bit 12 (1)
S21.232
and
higher
11102 bit 14 (3)
11101 bit 9 (2)