ABB ACSM1 Manual page 309

Code Alarm
(fieldbus code)
2024 LATCH POS 1 FAILURE
(0x7382)
2025 LATCH POS 2 FAILURE
(0x7383)
2026 ENC EMULATION
FAILURE
(0x7384)
Cause
Position latch 1 from encoder 1
or 2 has failed.
Position latch 2 from encoder 1
or 2 has failed.
Encoder emulation error
What to do
Check latch source parameter settings:
HOME SWITCH TRIG, 62.12 PRESET
62.15 TRIG PROBE1 and
PROBE2. Note that zero pulse is not always
supported. *
Check that appropriate encoder interface 1/2
is activated by parameter
SEL / 90.02 ENCODER 2
Note: The new setting will only take effect
after parameter 90.10 ENC PAR REFRESH
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, (4) FEN-11 TTL or (6) FEN-21
- 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
(0) None / (1) Commut sig
TRUE).
- Zero pulse is not supported when resolver
input is selected (i.e. 90.01/90.02
21 RES).
See alarm LATCH POS 1 FAILURE.
If position value used in emulation is
measured by encoder:
- Check that FEN-xx encoder used in
emulation (90.03 EMUL MODE
corresponds to FEN-xx encoder interface 1 or
(and) 2 activated by parameter
ENCODER 1 SEL / 90.02 ENCODER 2
(Parameter 90.01/90.02 activates the position
calculation of the used FEN-xx input).
If position value used in emulation is
determined by drive software:
- Check that FEN-xx encoder used in
emulation (90.03 EMUL MODE
corresponds to FEN-xx encoder interface 1 or
(and) 2 activated by parameter
ENCODER 1 SEL / 90.02 ENCODER 2 SEL
(because position data used in emulation is
written to FEN-xx during encoder data
request). Encoder interface 2 is
recommended.
Note: The new setting will only take effect
after parameter 90.10 ENC PAR REFRESH
used or after the JCU control unit is powered
up the next time.
309
62.04
TRIG,
62.17 TRIG
90.10 ENCODER 1
SEL.
is
TTL+, (2) FEN-01
TTL.
and 91.02 =
and 91.05 = (1)
= (5) FEN-
SEL)
90.01
SEL.
SEL)
90.01
is
Fault tracing