340 Fault tracing
Warning messages
Note: The list also contains events that only appear in the Event log.
Code
(hex)
Warning / Aux. code Cause What to do
64FF Fault reset A fault has been reset from the
panel, Drive composer PC tool,
fieldbus or I/O.
Event. Informative only.
A2B1 Overcurrent Output current has exceeded
internal fault limit.
In addition to an actual
overcurrent situation, this
warning may also be caused
by an earth fault or supply
phase loss.
Check motor load.
Check acceleration times in parameter
group 23 Speed reference ramp (speed
control) or 28 Frequency reference
chain (frequency control). Also check
parameters 46.01 Speed scaling, 46.02
Frequency scaling and 46.03 To rq u e
scaling.
Check motor and motor cable
(including phasing and delta/star
connection).
Check for an earth fault in motor or
motor cables by measuring the
insulation resistances of motor and
motor cable. See chapter Electrical
installation, section Checking the
insulation of the assembly in the
Hardware manual of the drive.
Check there are no contactors opening
and closing in motor cable.
Check that the start-up data in
parameter group 99 Motor data
corresponds to the motor rating plate.
Check that there are no power factor
correction capacitors or surge
absorbers in motor cable.
A2B3 Earth leakage Drive has detected load
unbalance typically due to
earth fault in motor or motor
cable.
Check there are no power factor
correction capacitors or surge
absorbers in motor cable.
Check for an earth fault in motor or
motor cables by measuring the
insulation resistances of motor and
motor cable. See chapter Electrical
installation, section Checking the
insulation of the assembly in the
Hardware manual of the drive. If an
earth fault is found, fix or change the
motor cable and/or motor.
If no earth fault can be detected,
contact your local ABB representative.
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