Troubleshooting And Fault Elimination - Lenze L−force GST Operating Instructions Manual

8

Troubleshooting and fault elimination

8 Troubleshooting and fault elimination
If any malfunctions should occur during operation of the drive system, please check the
possible causes using the following table. If the fault cannot be eliminated by one of the
listed measures, please contact the Lenze Service.
Fault
Drive does not turn
Motor running, gearbox at
standstill
Unusual running noises
Excessive temperature
Loose fixing elements
Shrink disc connection is
spinning
70
Possible cause
Voltage supply interrupted
Incorrect electrical connection
Excessive load
Fixing elements are missing or
defective
Gearbox is defective
Clutch disengaged
Overload
Damage in the gearbox or
motor
Overload
Insufficient heat dissipation
Insufficient lubricant
Vibrations
l
Correct screw tightening
torque has not been
reached
– Insufficient number of
passes, not all screws are
tightened correctly.
l
Machine shaft and hollow
shaft bore not sufficiently
degreased
l
Wrong component part
dimensions
– Fits, roughnesses
l
Yield point of machine
shaft material is too low
2
– Re > 300 N/mm required
l Friction factors are too low
– Coefficients of friction m ³
0.15 required
l
The shrink disc itself has
been degreased so that the
screws and the bevels are
dry. Due to incorrect
friction factors, the shrink
disc cannot be tightened
correctly.
l
Remedy
Check connection
Check if nameplate matches voltage supply
Reduce load
Check drive−machine assignment
Check attachment
Contact Lenze Service
Engage the clutch
Reduce load
Check drive−machine assignment
Contact Lenze Service
Reduce load
Check drive−machine assignment
Improve cooling air supply
Clean gearbox / motor
Refill lubricant as specified
Avoid vibrations
Specifications for assembly, dimensions and
material not observed
BA 12.0023−EN 6.0