ABB ACS880 - Page 546

What to doCause
Event name /
Aux. code
Code
(hex)
See A4B0 Excess temperature.
Power unit module temperature is
excessive.
Excess
temperature
4310
See A4B1 Excess temperature
difference (page 561).
High temperature difference between the
IGBTs of different phases.
Excess temp
difference
4380
Check the value of parameter 35.2
Measured temperature 1.
Measured temperature 1 has exceeded
fault limit.
External
temperature 1
4981
Check the cooling of the motor (or other
equipment whose temperature is being
measured).
Check the value of parameter 35.12
Temperature 1 fault limit.
Check the value of parameter 35.3
Measured temperature 2.
Measured temperature 2 has exceeded
fault limit.
External
temperature 2
4982
Check the cooling of the motor (or other
equipment whose temperature is being
measured).
Check the value of parameter 35.22
Temperature 2 fault limit.
Power down the control unit and make
sure that the module is properly inserted
in the correct slot.
A thermistor protection module has been
activated by parameter 35.30 but cannot
be detected.
FPTC not
found
4990
The last digit of the auxiliary code
identifies the slot.
Check the cooling of the motor.The thermistor protection module
installed in slot 1 indicates
overtemperature.
Safe motor
temperature 1
4991
Check the motor load and drive ratings.
Check the wiring of the temperature
sensor. Repair wiring if faulty.
Measure the resistance of the sensor.
Replace sensor if faulty.
Check the cooling of the motor.The thermistor protection module
installed in slot 2 indicates
overtemperature.
Safe motor
temperature 2
4992
Check the motor load and drive ratings.
Check the wiring of the temperature
sensor. Repair wiring if faulty.
Measure the resistance of the sensor.
Replace sensor if faulty.
Check the cooling of the motor.The thermistor protection module
installed in slot 3 indicates
overtemperature.
Safe motor
temperature 3
4993
Check the motor load and drive ratings.
Check the wiring of the temperature
sensor. Repair wiring if faulty.
Measure the resistance of the sensor.
Replace sensor if faulty.
See A581 Fan.
Cooling fan feedback missing.Fan5080
See A582 Auxiliary fan not running.
An auxiliary cooling fan (connected to
the fan connectors on the control unit) is
stuck or disconnected.
Auxiliary fan
not running
5081
Contact your local ABB representative,
quoting the auxiliary code. The code
Safe torque off hardware failure.STO hardware
failure
5090
contains location information, especially
with parallel-connected inverter modules.
546 Fault tracing