ABB ACS800 Firmware Manual page 281

WARNING CAUSE
CALIBRA REQ Calibration of output current transformers is
required. Displayed at start if drive is in Scalar
(FF36)
control (parameter 99.04) and scalar fly start
feature is on (parameter 21.08).
COMM MODULE Cyclical communication between drive and
master is lost.
(7510)
3.08 AW 1 bit 12
(programmable
Fault Function
30.18, 30.19)
CTRL LOC DIFF Master and Follower are not in the same
control location.
3.32 bit 12
CUR UNBAL xx Drive has detected excessive output current
unbalance in inverter unit of several parallel
(2330)
connected inverter modules. This can be
3.08 AW1 bit 14 and
caused by external fault (earth fault, motor,
4.01
motor cabling, etc.) or internal fault (damaged
(programmable
inverter component). xx (2...12) refers to
Fault Function
inverter module number.
30.17)
DC BUS LIM Drive limits torque due to too high or too low
intermediate circuit DC voltage.
(3211)
3.18 AW5 bit 9
(programmable
Fault Function
30.23)
EARTH FAULT Drive has detected load unbalance typically
due to earth fault in motor or motor cable.
(2330)
3.08 AW 1 bit 14
(programmable
Fault Function
30.17)
ENCODER A<>B Pulse encoder phasing is wrong: Phase A is
connected to terminal of phase B and vice
(7302)
versa.
3.09 AW 2 bit 4
ENCODER ERR Communication fault between pulse encoder
and pulse encoder interface module and
(7301)
between module and drive
3.08 AW 1 bit 5
WHAT TO DO
Calibration starts automatically. Wait for a
while.
Check status of fieldbus communication. See
chapter Fieldbus control, or appropriate
fieldbus adapter manual.
Check parameter settings:
- group 51 COMM MODULE DATA
adapter)
- group 52 STANDARD MODBUS
Standard Modbus Link).
Check Fault Function parameters.
Check cable connections.
Check if master can communicate.
Check that the Master and the Follower are
both in EXT2.
Check that there are no power factor correction
capacitors or surge absorbers in motor cable.
Check that there is no earth fault in motor or
motor cables:
- measure insulation resistances of motor and
motor cable.
If no earth fault can be detected, contact your
local ABB representative.
Informative alarm
Check Fault Function parameters.
Check there are no power factor correction
capacitors or surge absorbers in motor cable.
Check that there is no earth fault in motor or
motor cables:
- measure insulation resistances of motor and
motor cable.
If no earth fault can be detected, contact your
local ABB representative.
Interchange connection of pulse encoder
phases A and B.
Check pulse encoder and its wiring, pulse
encoder interface module and its wiring,
parameter group 50 ENCODER MODULE
settings.
281
(for fieldbus
(for
Fault tracing