Troubleshooting And Fault Elimination - Lenze m500-P Series Operating Instructions Manual

9

Troubleshooting and fault elimination

9 Troubleshooting and fault elimination
If faults occur during operation of the drive system:
¯ First check the possible causes of malfunction according to the following table.
)
Note!
Also observe the corresponding chapters in the operating instructions for
the other components of the drive system.
If the fault cannot be remedied using one of the listed measures, please contact the
Lenze Service.
Fault
Motor too hot
Can only be evaluated by
measuring the surface
temperature:
¯ Non−ventilated motors
> 140 °C
¯ Externally ventilated or
self−ventilated motors
> 110 °C
Motor does not start
Motor suddenly stops and
does not restart
Incorrect rotating direction
of the motor
Motor rotates normally but
does not reach the expected
torque
Motor turns in one direction
at maximum speed in an
uncontrolled manner
Motor rotates slowly in one
direction and cannot be
influenced by the inverter
Irregular running
Vibrations
Running noises
Surface temperature > 140°C Overload of the drive
54
Cause
Insufficient cooling air, blocked air
ducts.
Preheated cooling air
Overload, with normal mains voltage
the current is too high and the speed
too low
Rated operating mode exceeded (S1 to
S8 IEC/EN 60034−1)
Loose contact in supply cable
(temporary two−phase operation!)
Fuse has blown (two−phasing!)
Overload of the drive
Heat dissipation impeded by deposits
Voltage supply interrupted
Inverter inhibited
Fuse has blown
Interrupted encoder cable
Brake does not release
Drive blocks
Motor cable with reverse polarity
Overload monitoring of the inverter is
activated
Motor cable with reverse polarity
Motor cable interchanged cyclically
Not all motor phases connected
Motor cable interchanged cyclically
Polarity of encoder cable reversed
Polarity of motor cable and encoder
cable reversed
Insufficient shielding of motor or
resolver cable
Drive inverter gain too large
Insufficiently balanced coupling
elements or machine
Inadequate alignment of drive train
Loose fixing screws
Foreign particles inside the motor
Bearing damage
Heat dissipation impeded by deposits
Remedy
Ensure unimpeded circulation of cooling air
Ensure a sufficient supply of fresh cooling air
Use larger drive (determined by power measurement)
Adjust rated operating mode to the specified operating conditions.
Determination of correct drive by expert or Lenze customer service
Tighten loose contact
Replace fuse
Check load and, if necessary, reduce by means of longer ramp−up
times
Check winding temperature
Clean surface and cooling fins of the drives
Check error message on the inverter
Check electrical connection, ^ 27
Check display on the inverter
Check inverter enable
Replace fuse
Check error message on the inverter
Check encoder cable
Check electrical connection, ^ 27
Check air gap, , brake documentation
Check continuity of magnetic coil
Check components for easy movement, remove foreign particles if
necessary
Check electrical connection, ^ 27
Check inverter settings
Reduce load caused by longer acceleration times
Check and correct polarity
Connect the phases at the motor cable connection correctly
Check motor connector and correct it if necessary
Check encoder connection and correct it if necessary
Check and correct polarity
Checking shielding and earth connection
Adjust the gains of the inverters (see operating instructions for
drive inverter)
Rebalance
Realign machine unit, check foundation if necessary
Check and tighten screw connections
Repair by manufacturer if necessary
Check load
Check winding temperature
Clean surface and cooling fins of the drives
Lenze ¯ BA 33.0008 ¯ 5.0