ABB ACS800 Series Firmware Manual page 175

Warning Cause
CUR UNBAL xx Drive has detected excessive output current
unbalance in inverter unit of several parallel
(2330)
connected inverter modules. This can be
02.15 AW1 bit 14
caused by external fault (ground fault, motor,
(programmable
motor cabling, etc.) or internal fault (damaged
Fault Function
inverter component). xx (2...12) refers to
30.17)
inverter module number.
DC BUS LIM Drive limits torque due to too high or too low
intermediate circuit DC voltage.
(3211)
ENC CABLE Pulse encoder phase signal is missing.
(7310)
ENCODER A<>B Pulse encoder phasing is wrong: Phase A is
connected to terminal of phase B and vice
(7302)
versa.
ENCODER ERR Communication fault between pulse encoder
and pulse encoder interface module and
(7301)
between module and drive
02.15 AW 1 bit 05
FAN OTEMP Excessive temperature of drive output filter fan.
Supervision is in use in step-up drives.
(FF83)
GROUND FAULT Drive has detected load unbalance typically
due to earth fault in motor or motor cable.
02.15 AW 1 bit 14
(programmable
Fault Function
30.17)
HW RECONF RQ Inverter type (e.g. sr0025_3) has been
changed. Inverter type is usually changed at
(FF38)
factory or during drive implementation.
ID DONE Drive has performed motor identification
magnetization and is ready for operation. This
(FF32)
warning belongs to normal start-up procedure.
ID MAGN Motor identification magnetization is on. This
warning belongs to normal start-up procedure.
(FF31)
ID MAGN REQ Motor identification is required. This warning
belongs to normal start-up procedure. Drive
(FF30)
expects user to select how motor identification
should be performed: By Identification
Magnetization or by ID Run.
ID N CHANGED Drive ID number has been changed from 1.
(FF68)
What to Do
Check there are no power factor correction
capacitors or surge absorbers in motor cable.
Check that there is no ground 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 pulse encoder and its wiring.
Check pulse encoder interface module and its
wiring.
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 PULSE ENCODER
settings.
Stop drive. Let it cool down.
Check ambient temperature.
Check fan rotates in correct direction and air
flows freely.
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.
Wait until alarm POWEROFF! activates and
switch control board power off to validate
inverter type change.
Continue drive operation.
Wait until drive indicates that motor
identification is completed.
Start Identification Magnetization by pressing
Start key, or select ID Run and start (see
parameter 99.10).
Change ID number back to 1. See chapter
Control panel.
163
Fault tracing