Diagnostics And Fault Elimination; Malfunctions - Lenze g500-S Series Mounting And Switch-On Instructions

Diagnostics and fault elimination

Malfunctions

Diagnostics and fault elimination
Malfunctions
If faults occur during the operation of the drive, the table below helps you to identify the
causes. If it is not possible to remedy the fault using the measures listed, please contact the
Lenze service department.
Error
Drive is not running
Motor runs, gearbox does not
Unusual running noises
Excessive temperature
Vibrations, noise
Shrink disc connection is spinning Correct screw tightening torque has not been reached
Oil is leaking
Oil discharge at the gearbox
ventilation unit
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Possible cause
Voltage supply interrupted
Faulty electrical connection
Load too high
Coupling components are missing or defective
Gearbox is defective
Clutch disengaged
Overload
Overload
Inadequate heat dissipation
Lack of lubricant
Loose fixing elements
- Insufficient number of passes, not all screws are
tightened correctly.
Machine shaft and hollow shaft bore not sufficiently
degreased
Wrong component part dimensions
- Fits, roughnesses
Yield point of machine shaft material is too low
- Re > 300 N/mm2 required
Friction factors are too low
- Surface roughness Rz ≤ 15 µm required
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.
Wrong oil level for the applied mounting position
Initially slight leakage at the shaft seal
Overpressure due to lacking ventilation
Overpressure due to polluted ventilation
Worn-out shaft sealing rings
Cover / flange screws are loose
Incorrect oil level for the mounting position applied
and/or incorrect position of ventilation unit
Remedy
Check connection
Check external voltage supply.
Reduce load
Check assignment drive - machine
Check mounting
Inform Lenze Service
Engage the clutch
Reduce load
Check assignment drive - machine
Reduce load
Improve cooling air supply, clean gearbox / motor
Top up lubricant according to regulations
Tighten fixing elements
Specifications for assembly, dimensions and material
must be observed
Check mounting position (see nameplate) and oil level
Optimum sealing conditions only arise after the
running-in phase
Install ventilation according to the mounting position
Clean ventilation
Check condition of sealing lip contact area, repair if
necessary.
Check that the fixing screws are tightly fastened.
Continue to monitor the gearbox
Check mounting position (see nameplate) and oil level
Check position of ventilation unit
Use oil compensation reservoir