Lenze m500-P Series, Operating Instructions Manual

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Troubleshooting and fault elimination 9
54
Lenze ¯ BA 33.0008 ¯ 5.0
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 Cause Remedy
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
Insufficient cooling air, blocked air
ducts. Ensure unimpeded circulation of cooling air
Preheated cooling air Ensure a sufficient supply of fresh cooling air
Overload, with normal mains voltage
the current is too high and the speed
too low Use larger drive (determined by power measurement)
Rated operating mode exceeded (S1 to
S8 IEC/EN 60034−1) Adjust rated operating mode to the specified operating conditions.
Determination of correct drive by expert or Lenze customer service
Loose contact in supply cable
(temporary two−phase operation!) Tighten loose contact
Fuse has blown (two−phasing!) Replace fuse
Overload of the drive
Check load and, if necessary, reduce by means of longer ramp−up
times
Check winding temperature
Heat dissipation impeded by deposits Clean surface and cooling fins of the drives
Motor does not start Voltage supply interrupted
Check error message on the inverter
Check electrical connection,
^
27
Inverter inhibited
Check display on the inverter
Check inverter enable
Fuse has blown Replace fuse
Interrupted encoder cable
Check error message on the inverter
Check encoder cable
Brake does not release
Check electrical connection,
^
27
Check air gap,
,
brake documentation
Check continuity of magnetic coil
Drive blocks Check components for easy movement, remove foreign particles if
necessary
Motor cable with reverse polarity Check electrical connection,
^
27
Motor suddenly stops and
does not restart Overload monitoring of the inverter is
activated
Check inverter settings
Reduce load caused by longer acceleration times
Incorrect rotating direction
of the motor Motor cable with reverse polarity Check and correct polarity
Motor rotates normally but
does not reach the expected
torque Motor cable interchanged cyclically
Not all motor phases connected Connect the phases at the motor cable connection correctly
Motor turns in one direction
at maximum speed in an
uncontrolled manner Motor cable interchanged cyclically Check motor connector and correct it if necessary
Polarity of encoder cable reversed Check encoder connection and correct it if necessary
Motor rotates slowly in one
direction and cannot be
influenced by the inverter Polarity of motor cable and encoder
cable reversed Check and correct polarity
Irregular running
Insufficient shielding of motor or
resolver cable Checking shielding and earth connection
Drive inverter gain too large Adjust the gains of the inverters (see operating instructions for
drive inverter)
Vibrations
Insufficiently balanced coupling
elements or machine Rebalance
Inadequate alignment of 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
Surface temperature > 140°C Overload of the drive
Check load
Check winding temperature
Heat dissipation impeded by deposits Clean surface and cooling fins of the drives