ABB ACS880+N5350 User Manual page 188

Table 13-2 Fault Messages (Alphabetical by Keypad Text)
Fault
Motor stall
Programmable fault: 31.24
Stall function
Brake resistor
BR excess
temperature
Brake resistor
wiring
BC short circuit
BC IGBT excess
temperature
Mechanical brake
closing failed
Programmable fault: 44.17
Brake fault function
Mechanical brake
opening failed
Programmable fault: 44.17
Brake fault function
Mechanical brake
opening not allowed
Programmable fault: 44.17
Brake fault function
Motor fan
Programmable fault:
35.106 DOL starter event type
Motor speed
feedback
Programmable fault: 90.45
Motor feedback fault
3AXD50000011888
Fault # Cause
7121 Motor is operating in stall
region because of e.g.
excessive load or
insufficient motor power.
7181 Brake resistor broken or
not connected.
7183 Brake resistor temperature
has exceeded fault limit
defined by parameter
43.11 Brake resistor
fault limit.
7184 Brake resistor short circuit
or brake chopper control
fault.
7191 Short circuit in brake
chopper IGBT.
7192 Brake chopper IGBT
temperature has
exceeded internal fault
limit.
71A2 Mechanical brake control
fault.
Activated eg. if brake
acknowledgement is not
as expected during brake
closing.
71A3 Mechanical brake control
fault.
Activated eg. if brake
acknowledgement is not
as expected during brake
opening.
71A5 Open conditions of
mechanical brake cannot
be fulfilled (for example,
brake has been prevented
from opening by
parameter 44.11 Keep
brake closed).
71B1 No feedback received
from external fan.
7301 No motor speed feedback
received.
What to do
Check motor load and drive ratings.
Check fault function parameters.
Check that a brake resistor has been connected.
Check the condition of the brake resistor.
Check the dimensioning of the brake resistor.
Stop drive. Let resistor cool down.
Check resistor overload protection function settings
(parameter group 43 Brake chopper).
Check fault limit setting, parameter 43.11 Brake resistor
fault limit.
Check that braking cycle meets allowed limits.
Check brake chopper and brake resistor connection.
Ensure brake resistor is not damaged. After correcting the
cause of the fault, reboot the control unit (using parameter
96.08 Control board boot) or by cycling power.
Ensure brake resistor is connected and not damaged.
Check the electrical specifications of the brake resistor
against the Hardware manual.
Replace brake chopper (if replaceable). After correcting
the cause of the fault, reboot the control unit (using
parameter 96.08 Control board boot) or by cycling power.
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 43 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 external fan (or other equipment controlled) by the
logic.
Check settings of parameters 35.100...35.106.
See A7B0 Motor speed feedback.
Troubleshooting 13-15