ABB ACSM1 - Page 273

Fault tracing
273
2025 LATCH POS 2 FAILURE
(0x7383)
Position latch 2 from encoder 1
or 2 has failed.
See alarm LATCH POS 1 FAILURE.
2026 ENC EMULATION
FAILURE
(0x7384)
Encoder emulation error If position value used in emulation is
measured by encoder:
- Check that FEN-xx encoder used in
emulation (90.03 EMUL MODE SEL)
corresponds to FEN-xx encoder interface 1 or
(and) 2 activated by parameter 90.01
ENCODER 1 SEL / 90.02 ENCODER 2 SEL.
(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 SEL)
corresponds to FEN-xx encoder interface 1 or
(and) 2 activated by parameter 90.01
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 is
used or after the JCU control unit is powered
up the next time.
2027 FEN TEMP MEAS
FAILURE
(0x7385)
Error in temperature
measurement when
temperature sensor (KTY or
PTC) connected to encoder
interface FEN-xx is used.
Check that parameter 45.02 MOT TEMP
SOURCE setting corresponds to encoder
interface installation (9.20 OPTION SLOT 1 /
9.21 OPTION SLOT 2):
If one FEN-xx module is used:
- Parameter 45.02 MOT TEMP SOURCE
setting must be either (2) KTY 1st FEN or (5)
PTC 1st FEN. FEN-xx module can be in
either Slot 1 or Slot 2.
If two FEN-xx modules are used:
- When parameter 45.02 MOT TEMP
SOURCE setting is (2) KTY 1st FEN or (5)
PTC 1st FEN, the encoder installed in drive
Slot 1 is used.
- When parameter 45.02 MOT TEMP
SOURCE setting is (3) KTY 2nd FEN or (6)
PTC 2nd FEN, the encoder installed in drive
Slot 2 is used.
Error in temperature
measurement when KTY
sensor connected to encoder
interface FEN-01 is used.
FEN-01 does not support temperature
measurement with KTY sensor. Use PTC
sensor or other encoder interface module.
Code Alarm
(fieldbus code)
Cause What to do