ABB ACSM1 - Page 272

Fault tracing
272
2023 ENCODER 2 FAILURE
(0x7381)
Encoder 2 has been activated
by parameter but the encoder
interface (FEN-xx) cannot be
found.
Check parameter 90.02 ENCODER 2 SEL
setting corresponds to encoder interface 2
(FEN-xx) installed in drive Slot 1/2 (signal
9.20 OPTION SLOT 1 / 9.21 OPTION SLOT
2).
Note: The new setting will only take effect
after parameter 90.10 ENC PAR REFRESH is
used or after the JCU control unit is powered
up the next time.
EnDat or SSI encoder is used in
continuous mode as encoder 2.
[I.e. 90.02 ENCODER 2 SEL =
(3) FEN-11 ABS
and
91.02 ABS ENC INTERF = (2)
ENDAT or (4) SSI)
and
91.30 ENDAT MODE = (1)
CONTINUOUS (or 91.25 SSI
MODE = (1) CONTINUOUS).]
If possible, use single position transfer
instead of continuous position transfer (i.e. if
encoder has incremental sin/cos signals):
- Change parameter 91.25 SSI MODE / 91.30
ENDAT MODE to value (0) INITIAL POS..
Otherwise use EnDat/SSI encoder as
encoder 1:
- Change parameter 90.01 ENCODER 1 SEL
to value (3) FEN-11 ABS and parameter
90.02 ENCODER 2 SEL to value (0) NONE.
Note: The new setting will only take effect
after parameter 90.10 ENC PAR REFRESH is
used or after the JCU control unit is powered
up the next time.
2024 LATCH POS 1 FAILURE
(0x7382)
Position latch 1 from encoder 1
or 2 has failed.
Check latch source parameter settings: 62.04
HOME SWITCH TRIG, 62.12 PRESET TRIG,
62.15 TRIG PROBE1 and 62.17 TRIG
PROBE2. Note that zero pulse is not always
supported. *
Check that appropriate encoder interface 1/2
is activated by parameter 90.10 ENCODER 1
SEL / 90.02 ENCODER 2 SEL.
Note: The new setting will only take effect
after parameter 90.10 ENC PAR REFRESH is
used or after the JCU control unit is powered
up the next time.
* - Zero pulse is supported when TTL input of
encoder interface module is selected (i.e. par.
90.01/90.02 = (1) FEN-01 TTL+, (2) FEN-01
TTL, (4) FEN-11 TTL or (6) FEN-21 TTL.
- Zero pulse is supported when absolute
encoder input of encoder interface module is
selected and zero pulse is enabled (i.e.
90.01/90.02 = (3) FEN-11 ABS and 91.02 =
(0) NONE / (1) COMMUT SIG and 91.05 = (1)
TRUE).
- Zero pulse is not supported when resolver
input is selected (i.e. 90.01/90.02 = (5) FEN-
21 RES).
Code Alarm
(fieldbus code)
Cause What to do