8
Service
Malfunctions
Operating Instructions – CMP ELVCD
83
8
Service
8.1
Malfunctions
8.1.1
Malfunctions on the ELVCD drive
Fault
Possible cause
Measure
Motor heats up excessively
and switches off with a
fault.
Overload
•
Perform power measurement.
•
If necessary, use a bigger motor or reduce the
load.
•
Check travel profile.
Ambient temperature too
high.
Observe permitted temperature range.
Insufficient cooling.
Clean the ELVCD drive.
Running noise on motor
Bearing damage
•
Contact SEW-EURODRIVE Service.
•
Replace motor.
Vibration of rotating parts
Rectify cause, possible imbalance.
Oil leaks in the connection
box or at the motor/flange
connection (with gearmo-
tors only).
Internal seal defective.
•
Contact SEW-EURODRIVE Service.
•
Have SEW‑EURODRIVE Service change the
internal seal.
8.1.2
Brake malfunctions
Fault
Possible cause
Measure
Brake does not release.
Inverter is defective.
•
Contact SEW-EURODRIVE Service.
•
Have brake and motor replaced by
SEW‑EURODRIVE Service.
The maximum permissible
working air gap has been
exceeded because the
brake lining is worn.
•
Contact SEW-EURODRIVE Service.
•
Have brake and motor replaced by
SEW‑EURODRIVE Service.
The brake is defective.
•
Contact SEW-EURODRIVE Service.
•
Have brake and brake control replaced by
SEW‑EURODRIVE Service.
Motor does not brake.
Brake lining is worn.
•
Contact SEW-EURODRIVE Service.
•
Have brake and motor replaced by
SEW‑EURODRIVE Service.
Braking torque is wrong.
•
Contact SEW-EURODRIVE Service.
22759468/EN – 11/2017
