ABB ACS880 Firmware Manual page 525

Code
Fault
(hex)
7192 BC IGBT excess
temperature
71A2 Mechanical brake
closing failed
Programmable fault:
Brake fault function
71A3 Mechanical brake
opening failed
Programmable fault:
Brake fault function
71A5 Mechanical brake
opening not allowed
Programmable fault:
Brake fault function
71B1 Motor fan
Programmable fault:
35.106 DOL starter event
type
7301 Motor speed feedback
Programmable fault:
Motor feedback fault
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Cause
Brake chopper IGBT
temperature has exceeded
internal fault limit.
Mechanical brake control fault.
Activated eg. if brake
acknowledgement is not as
44.17
expected during brake closing.
Mechanical brake control fault.
Activated eg. if brake
acknowledgement is not as
44.17
expected during brake
opening.
Open conditions of mechanical
brake cannot be fulfilled (for
example, brake has been
44.17
prevented from opening by
parameter 44.11 Keep brake
closed).
In an encoderless application,
the brake is kept closed by a
brake close request (either
from parameter 44.12 Brake
close request or from an
FSO-xx safety functions
module) against a modulating
drive for longer than 5
seconds.
No feedback received from
external fan.
No motor speed feedback
received.
90.45
Fault tracing 525
What to do
Let chopper cool down.
Check for excessive ambient
temperature.
Check for cooling fan failure.
Check for obstructions in the air flow.
Check the dimensioning and cooling of
the cabinet.
Check resistor overload protection
function settings (parameter group
Brake chopper).
Check that braking cycle meets allowed
limits.
Check that drive supply AC voltage is not
excessive.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that acknowledgement signal
matches actual status of brake.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that acknowledgement signal
matches actual status of brake.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control (especially 44.11 Keep brake
closed).
Check that acknowledgement signal (if
used) matches actual status of brake.
Check the source signal selected by
parameter 44.12 Brake close
Check the safety circuits connected to
the FSO-xx safety functions module.
Check external fan (or other equipment
controlled) by the logic.
Check settings of parameters
35.100...35.106.
See A7B0 Motor speed feedback
505).
43
request.
(page