ABB 500 Operating Instructions Manual page 65

Code Text on
seven
LCD of control panel
segm.
CDP 31x
display
A 108 RAM-backup failed
A 110 System restart
A 118 Mains underv.alarm
A 120 Arm.curr.dev.alarm
A 121 Ext.Overvolt.Alarm
A 123 Motor 2 temp. alarm
A 124 Motor 2 overl alarm
A 126 Conv.FAN ack.alarm
DCS 500B / DCP 500B Operating Instructions
Alarm No Battery Backup Function for RAM
Capacitor for RAM backup has discharged
(perhaps unit has been stored for too long
without the electronics voltage switched
on?); load capacitor by leaving unit electron-
ics switched on for a lengthy period.
Alarm System Restart
Signal is filed in fault memory (fault logger),
but not displayed at the unit or the LC-
Display of the CDP 31x.
Alarm Mains Undervoltage (AC)
Setting of undervoltage monitoring with Pa-
rameter
[P 508]
Check: - See also Fault Code
Alarm Armature Current Deviation
If the current reference
from the current feedback for more than
5 sec by more than 20 %, referenced to the
rated current, this signal will be outputted.
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 Fault 121)
Alarm Overtemperature MOTOR 2
Check: - Parameter setting MOT2.TEMP_
ALARM_L
See also Fault Code
Alarm Overload MOTOR 2 (Thermal Model 2)
Check: - See Fault Code
Alarm No (Thyristor Power) Converter FAN
Acknowledge
Check: - See Fault Code
3ADW000055R0401_DCS500B_Operating Instruction_e_d
Chapter 4 - Signals and Troubleshooting
Definition /
Possible source
.
F 29
deviates
[P 10405]
correct?
[P 1602]
F 6.
F 7.
F 50.
Signal Remark
number
(ALARM_WORD_1/2)
11104 bit 7
11104 bit 10
11104 bit 13
11105 bit 6
S21.232
and
higher
11104 bit 8
11104 bit 9
11104 bit 12
IV A
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