Lenze SDSGS - Manual (Page 39)

Troubleshooting and fault elimination 9
l
39 BA 13.0011−EN 1.0
Fault Cause Remedy
Motor does not start Voltage supply interrupted l Check error message at the controller
l Check electrical connection (chapter 6)
Controller inhibited l Check display at drive controller
l Check controller enable
Resolver cable is interrupted l Check error message at the controller
l Check resolver cable
Brake does not release Check electrical connection
Check continuity of magnetic coil
Drive blocks Check components for easy movement, remove foreign particles if
necessary
Motor suddenly stops and
does not restart Overtemperature protector
switch is activated l Let motor cool down
– Reduce the load by prolonging the acceleration times
Overload monitoring of the
inverter is activated l Check controller settings
l Reduce the load by prolonging the acceleration times
Incorrect direction of
rotation of the motor, correct
display on the controller Reversed motor cable and
resolver cable Exchange 2 phases of the motor cable
and
the +COS/−COS connections of the resolver
Motor rotates slowly in one
direction and cannot be
influenced by the controller Polarity reversal of motor or
resolver cable Exchange 2 phases of the motor cable
or
the +COS/−COS connections of the resolver
Motor does not rotate,
gearbox output is not
running Defective wheel−hub
connection Check the connection, replace the keyway, if necessary, repair by
the manufacturer
Toothing worn out Repair by manufacturer
Irregular running Insufficient shielding of
motor or resolver cable Check shielding and grounding (chapter 6)
Drive controller gain too
large Adjust the gains of the controllers (see Drive controller operating
instructions)
Vibrations Insufficiently balanced
coupling elements or
machine Rebalance
Poor alignment of the drive
train Realign machine unit, check foundation if necessary
Loose fixing screws Check and tighten screw connections
Running noises Foreign particles inside the
motor Repair by manufacturer, if necessary
Bearing damage Repair by manufacturer, if necessary
Surface
temperature > 150 °C Overload of the drive Check load and, if necessary, reduce load by prolonging the
acceleration times
Heat dissipation impeded by
deposits Clean surface and cooling fins of the drives