ABB ACS880 - Page 542

What to doCause
Event name /
Aux. code
Code
(hex)
“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.
Short-circuit in motor cable(s) or motor.Short circuit2340
If the control unit is externally powered,
check the setting of parameter 95.4
Control board supply.
Check that parameter 99.10 Motor
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 boot) or by cycling
power.
Check motor cable.Excessive IGBT junction to case
temperature. This fault protects the
IGBT overload2381
Check ambient conditions.
IGBT(s) and can be activated by a short
circuit in the motor cable.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
Check motor cabling.AC phase current difference between
parallel-connected inverter modules is
excessive.
BU current
difference
2391
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 above). “ZZ”
indicates the phase (1: U, 2: V, 3: W).
Check there are no power factor
correction capacitors or surge absorbers
in motor cable.
Total earth leakage of inverter modules
is excessive.
BU earth
leakage
2392
542 Fault tracing