Lenze SDSGA - Manual (Page 30)

Troubleshooting and fault elimination 8
l
30 BA 13.0008 − EN 2.1
8 Troubleshooting and fault elimination
ƒ If faults occur during operation, take the following steps:
– Check the possible causes of the faults by means of the following table.
– Please observe the corresponding chapters in the Operating Instructions for the
other components of the drive system.
ƒ If the fault cannot be eliminated by one of the measures listed in these Operating
Instructions, please contact the Lenze Service.
Fault Cause Remedy
Motor does not start Voltage supply interrupted l Check error message at drive controller
l Check electrical connection (chapter 5)
Controller inhibited l Check display at drive controller
l Check controller enable
Resolver cable is interrupted l Check error message at drive controller
l Check resolver cable
Brake does not release Check electrical connection
Check air gap (see Brake operating instructions)
Check continuity of magnetic coil
Drive is blocked Check components for easy movement, remove foreign bodies if
necessary
Motor stops suddenly and
does not start again Temperature monitoring 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
Wrong direction of rotation
of the motor, correct display
at 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 a
direction which cannot be
influenced via 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 key, if necessary, repair by the
manufacturer
Toothing worn out Repair by the manufacturer
Uneven running Insufficient shielding of
motor or resolver cable Check shielding and grounding (chapter 5)
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 the machine set, if necessary, check the base
Loose fixing screws Check and tighten screw connections
Running noises Foreign bodies inside the
motor Repair by manufacturer, if necessary
Bearing damage Repair by manufacturer, if necessary
Surface
temperature > 140 °C Overload of drive l Check load and, if necessary, reduce load by prolonging the
acceleration times
l Check the winding temperature (chapter 7.1)
Heat removal restricted due
to deposit build−up Clean surface and cooling ribs of the drives