ABB ACS880 Firmware Manual page 654

654 Fault tracing
Code Event name /
(hex) Aux. code
2340 Short circuit
2381 IGBT overload
2391 BU current
difference
Cause
Short-circuit in motor cable(s) or
motor.
Excessive IGBT junction to case
temperature. This fault protects the
IGBT(s) and can be activated by a
short circuit in the motor cable.
AC phase current difference between
parallel-connected inverter modules
is excessive.
What to do
With parallel-connected modules,
check the auxiliary code (format XXXY
YYZZ).
"Y YY" specifies through which BCU
control unit channel the fault was
received.
If no earth fault can be detected,
contact your local ABB representative.
Check motor and motor cable for
cabling errors.
If the control unit is externally
powered, check the setting of
parameter 95.4 Control board
Check that parameter
nominal power has been set correctly.
Check there are no power factor
correction capacitors or surge
absorbers in motor cable.
Check the auxiliary code (format XXXY
YYZZ). With parallel-connected
inverter modules, "Y YY" specifies
through which BCU control unit
channel the fault was received. "ZZ"
indicates the location of the short
circuit (0: No detailed information
available, 1: Upper branch of U-phase,
2: Lower branch of U-phase, 4: Upper
branch of V-phase, 8: Lower branch of
V-phase, 10: Upper branch of W-phase,
20: Lower branch of W-phase, other:
combinations of the above).
Check auxiliary code 40h = DC
capacitor short circuit.
After correcting the cause of the fault,
reboot the control unit (using
parameter 96.8 Control board
or by cycling power.
Check motor cable.
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive
power.
Check motor cabling.
Check there are no power factor
correction capacitors or surge
absorbers in motor cable.
Check the auxiliary code (format XXXY
YYZZ). "XXX" specifies the source of
the first error (see "YYY"). "YYY"
specifies the module through which
BCU control unit channel the fault was
received (1: Channel 1, 2: Channel 2, 4:
Channel 3, 8: Channel 4, ..., 800:
Channel 12, other: combinations of the
supply.
99.10 Motor
boot)