ABB 500 Operating Instructions Manual page 67

Code Text on
seven
LCD of control panel
segm.
CDP 31x
display
A 134 Backup not allowed
A 136 Write backup alarm
A 137 Arm. current ripple
A 138 Init values read
A 140 Auto-reclosing
DCS 500B / DCP 500B Operating Instructions
Alarm Change of Parameter Set not allowed
Signal will appear when an attempt has
been made to change from Motor Set 1 to
Motor Set 2 or vice versa, e.g. while the mo-
tor shaft is turning or the line contactor is
switched on.
Alarm Write Backup of Values in Non-Volatile
Memory failed
The attempt to save values in non-volatile
memory has failed;
parameter memory could not be erased.
Check: - Is Jumper
routine?
Armature current ripple
One or several thyristors carry no current.
Check: - Current feedback with oscilloscope
(6 pulses within one cycle visible?)
- Branch fuses, thyristor gate con-
nection; gate-cathode resistance.
- Sensitivity of monitoring function:
set CUR_RIPPLE_LIM [421] (de
pending on the methode; see F34)
Alarm Initializiation Values read
Default values have been loaded, using
Parameter
[P 11202]
SET_VALUE); signal may only be entered in
the Fault Logger.
Auto-Reclosing (Self-Restart)
This alarm indicates when self-restart is per-
formed. During that time the alarms F29,
F31, F39 and F41 are suppressed. This
function is started when the line voltage
drops below the alarm or error threshold,
when not in synchronism, no field or no line
contactor acknowledgement and with
PWR_LOSS_MODE [9.19] = enable and
PWR_DOWN_TIME [5.10] greater than
zero.
3ADW000055R0401_DCS500B_Operating Instruction_e_d
Chapter 4 - Signals and Troubleshooting
Definition /
Possible source
enabling the save
S3
, Value 3 (FACTORY_
Signal Remark
number
(ALARM_WORD_1/2)
11105 bit 4
11105 bit 5
Can
11105 bit 9
not be re-
set
11105 bit 8
modified
in
S21.232
IV A
4 - 15