ABB ACS880-104

Fault tracing 573
A582 Auxiliary fan missing An auxiliary cooling fan
(connected to the fan
connectors on the control unit)
is stuck or disconnected.
The auxiliary code identifies the fan (1:
Auxiliary fan 1, 2: Auxiliary fan 2).
Check auxiliary fan(s) and connection(s).
Replace faulty fan.
Make sure the front cover of the drive
module is in place and tightened. If the
commissioning of the drive requires that
the cover is off, this warning will be
generated even if the corresponding fault
is defeated. See fault 5081 Auxiliary fan
broken (page 591).
A5A0 Safe torque off
Programmable warning:
31.22 STO indication
run/stop
Safe torque off function is
active, i.e. safety circuit
signal(s) connected to
connector XSTO is lost.
Check safety circuit connections. For
more information, see appropriate drive
hardware manual and description of
parameter 31.22 STO indication run/stop
(page 306).
A5EA Measurement circuit
temperature
Problem with internal
temperature measurement of
the drive.
Check the auxiliary code (format XXXY
YYZZ). “Y YY” specifies through which
BCU control unit channel the fault was
received (“0 00” with a ZCU control unit).
“ZZ” specifies the location (1: U-phase
IGBT, 2: V-phase IGBT, 3: W-phase
IGBT, 4: Power unit INT board, 5: Brake
chopper, 6: Air inlet, 7: Power supply
board, 8: du/dt filter, FAh: Air in temp).
A5EB PU board powerfail Power unit power supply
failure.
Contact your local ABB representative.
A5EC PU communication
internal
Communication errors
detected between the drive
control unit and the power unit.
Check the connections between the drive
control unit and the power unit.
A5ED Measurement circuit
ADC
Problem with measurement
circuit of power unit (analog to
digital converter)
Contact your local ABB representative.
A5EE Measurement circuit
DFF
Problem with current or voltage
measurement of power unit
Contact your local ABB representative.
A5EF PU state feedback State feedback from output
phases does not match control
signals.
Contact your local ABB representative.
A5F0 Charging feedback Charging in progress Informative warning. Wait until charging
finishes before starting the inverter unit.
A5F3 Switching frequency
below requested
Adequate motor control at
requested output frequency
cannot be reached because of
limited switching frequency
(eg. by parameter 95.15).
Informative warning.
A5F4 Control unit battery The battery of the control unit
is low.
Replace control unit battery.
This warning can be suppressed using
parameter 31.40.
Code
(hex)
Warning Cause What to do