ABB +N5600 Firmware Instructions page 588

588 Fault tracing
Code
Fault
(hex)
2391 BU current difference
2392 BU earth leakage
3130 Input phase loss
Programmable fault:
Supply phase loss
3180 Charge relay lost
3181 Wiring or earth fault
Programmable fault:
Wiring or earth fault
Cause
AC phase current difference
between parallel-connected
inverter modules is excessive.
Total earth leakage of inverter
modules is excessive.
Intermediate circuit DC voltage
is oscillating due to missing
31.21
input power line phase or
blown fuse.
No acknowledgement received
from charge relay.
The drive hardware is supplied
from a common DC bus.
31.23
Incorrect input power and
motor cable connection (i.e.
input power cable is connected
to the motor connection).
Drive has detected load
unbalance typically due to
earth fault in motor or motor
cable.
What to do
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 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.
Measure insulation resistances of motor
cables and motor.
Contact your local ABB representative.
Check input power line fuses.
Check for loose power cable
connections.
Check for input power supply imbalance.
Contact your local ABB representative.
Switch off the protection in parameter
31.23.
Check the power connections.
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.
Try running the motor in scalar control
mode if allowed. (See parameter
Motor control mode.)
99.04