DCS 500 User Manual

Page 65

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Chapter 4 - Signals and Troubleshooting

DCS 500B / DCP 500B Operating Instructions

IV A

4 - 13

Code

seven

segm.

display

Text on

LCD of control panel

CDP 31x

Definition /

Possible source

Signal

number

(ALARM_WORD_1/2)

Remark

A 108 RAM-backup failed

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.

11104

bit 7

A 110 System restart

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.

A 118 Mains underv.alarm

Alarm Mains Undervoltage (AC)

Setting of undervoltage monitoring with Pa-
rameter

[P 508]

Check: - See also Fault Code

F 29

11104

bit 10

A 120 Arm.curr.dev.alarm

Alarm Armature Current Deviation

If the current reference

[P 10405]

deviates

from the current feedback for more than
5 sec by more than 20 %, referenced to the
rated current, this signal will be outputted.

11104

bit 13

A 121 Ext.Overvolt.Alarm

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)

11105

bit 6

S21.232

and

higher

A 123 Motor 2 temp. alarm

Alarm Overtemperature MOTOR 2

Check: - Parameter setting MOT2.TEMP_

ALARM_L

[P 1602]

correct?