362 Fault tracing
7121 Motor stall
Programmable fault: 31.24
Stall function
Motor is operating in stall
region because of e.g.
excessive load or insufficient
motor power.
Check motor load and drive ratings.
Check fault function parameters.
7181 Brake resistor Brake resistor broken or not
connected.
Check that a brake resistor has been
connected.
Check the condition of the brake resistor.
Check the dimensioning of the brake
resistor.
7183 BR excess
temperature
Brake resistor temperature has
exceeded fault limit defined by
parameter 43.11 Brake resistor
fault limit.
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.
7184 Brake resistor wiring Brake resistor short circuit or
brake chopper control fault.
Check brake chopper and brake resistor
connection.
Ensure brake resistor is not damaged.
7191 BC short circuit Short circuit in brake chopper
IGBT.
Ensure brake resistor is connected and
not damaged.
Check the electrical specifications of the
brake resistor against chapter Resistor
braking in the hardware manual of the
drive.
Replace brake chopper (if replaceable).
7192 BC IGBT excess
temperature
Brake chopper IGBT
temperature has exceeded
internal fault limit.
Let chopper cool down.
Check for excessive ambient
temperature.
Check for cooling fan failure.
Check for obstructions in the air flow.
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.
7301 Motor speed feedback No motor speed feedback
received.
Encoder speed differs too
much from internal speed
estimate.
Aux code 4 = Drift detected.
Aux code 3FC = Incorrect
motor feedback configuration.
Aux code 3FD = Incorrect
motor speed.
Check the parameter 90.41 setting and
the actual source selected.
Check electrical connection of the
encoder and pulse sin/cos nr.
Code
(hex)
Fault / Aux. code Cause What to do
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