ABB DCS550 - Page 293

293
Fault tracing
3ADW000379R0501 DCS550 Manual e e
7-segment
display
Text on DCS
Control Panel
and DWL
Definition / Action
Fault-
word
Fault is
active when
Triplevel
from either flash or Memory Card failed (checksum fault).
Check:
−
one or both parameter sets (User1 and / or User2)
have not been saved properly - see ApplMacro (99.08)
− SDCS-CON-F
F551
551 AIRange
Analog input range:
Undershoot of one of the analog input values under 4mA /
2V.
Check:
−
AI Mon4mA (30.29)
−
used analog inputs connections and cables
− polarity of connection
9.04,
bit 2
always
4
F553
553 TachPolarity
Tacho polarity:
The polarity of the analog tacho respectively pulse
encoder [depending on
M1SpeedFbSell (50.03)] is
checked against the EMF
. Check:
−
EMF FbMonLev (30.15), SpeedFbMonLev (30.14)
−
polarity of tacho cable
−
polarity of pulse encoder cable (e.g. swap channels A
and A not)
−
polarity of armature and field cables
− direction of motor rotation
9.04,
bit 4
always
3
F554
554 TachoRange
Tacho range:
Overflow of AITacho input
. Check:
−
for the right connections (X1:1 to X1:4) on the SDCS-
CON-F
9.04,
bit 5
always
3
F557
557 ReversalTime
Reversal time:
Current direction not changed before
ZeroCurTimeOut
(97.19)
is elapsed. Check:
−
for high inductive motor
−
too high motor voltage compared to mains voltage
−
lower RevDly (43.14) if possible and
− increase ZeroCurTimeOut (97.19)
9.04,
bit
8
RdyRef = 1
3
F601
601 APFault1
User defined fault by AP
9.04,
bit 11
always
1
F602
602 APFault2
User defined fault by AP
9.04,
bit 12
always
1
F603
603 APFault3
User defined fault by AP
9.04,
bit 13
always
1
F604
604 APFault4
User defined fault by AP
9.04,
bit 14
always
1
F605
605 APFault5
User defined fault by AP
9.04,
bit 15
always
1