06
Fault tracing
A4A1
IGBT overtemperature Estimated drive IGBT
temperature is excessive.
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
A4A9
Cooling
Drive module temperature is
excessive.
Check ambient temperature. If it exceeds
40 °C/104 °F (IP21 frames R4
…
R9) or if
it exceeds 50 °C /122 °F (IP21 frames
R0
…
R9), ensure that load current does
not exceed derated load capacity of
drive. For all P55 frames, check the
derating temperatures. See chapter
Technical data
, section
Derating
in the
Hardware manual
of the drive.
Check drive module cooling air flow and
fan operation.
Check inside of cabinet and heatsink of
drive module for dust pick-up. Clean
whenever necessary.
A4B0
Excess temperature
Power unit module
temperature is excessive.
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
(
1:
U-phase,
2:
V-phase,
3:
W-phase,
4:
INT board,
6:
Air inlet (sensor connected
to INT board X10),
7:
PCB compartment
fan or power supply board,
FA:
Ambient
temperature).
A4B1
Excess temperature
difference
High temperature difference
between the IGBTs of different
phases.
Check the motor cabling.
Check cooling of drive module(s).
A4F6
IGBT temperature
Drive IGBT temperature is
excessive.
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
A582
Auxiliary fan missing
An auxiliary cooling fan (IP55
internal fan) is stuck or
disconnected.
Check the auxiliary code.
Check the auxiliary fan and connection.
Replace faulty fan.
Make sure the front cover of the drive 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
400
).
A5A0
Safe torque off
Programmable warning:
31.22
STO indication
run/stop
Safe torque off function is
active, ie safety circuit signal(s)
connected to connector STO is
lost.
Check safety circuit connections. For
more information, chapter
The Safe
torque off function
in the
Hardware
manual
of the drive and description of
parameter
31.22
STO indication run/stop
(page
244
).
Check the value of parameter
95.04
Control board supply
.
A5EA
Measurement circuit
temperature
Problem with internal
temperature measurement of
the drive.
Contact your local ABB representative.
Code
(hex)
Warning / Aux. code
Cause
What to do
