186
Operating Instructions – Electronic Motor DRC.-..-DAC
11
Malfunctions of the mechanical DRC drive
Service
11
Service
11.1 Malfunctions of the mechanical DRC drive
11.1.1 Malfunctions of the DRC motor
11.1.2 Brake malfunctions
NOTICE
Improper handling of DRC drive units may lead to damage.
Possible damage to property
• Note that only qualified personnel is permitted to repair drives from SEW-
EURODRIVE.
• Consult the SEW-EURODRIVE Service department.
Malfunction
Possible cause
Remedy
Motor heats up excessively
and trips an error
Overload
Measure power, use larger motor or
reduce load, if necessary, check travel
profile
Ambient temperature too high
Observe permitted temperature range
Insufficient cooling
Clean the drive
Running noise on motor
Bearing damage
•
Consult SEW-EURODRIVE Service
•
Replace motor
Vibration of rotating parts
Rectify cause, possible imbalance
Malfunction
Possible cause
Remedy
Brake does not release
Electronics cover faulty
•
Consult SEW-EURODRIVE Service
•
Replace electronics cover
Max. permitted working air gap
exceeded because brake lin-
ing worn down
•
Consult SEW-EURODRIVE
•
Have brake lining replaced by SEW-
EURODRIVE Service or a qualified
technician trained by SEW-
EURODRIVE
Brake defective
•
Consult SEW-EURODRIVE
•
Have brake replaced by SEW-
EURODRIVE Service or a qualified
technician trained by SEW-
EURODRIVE
Motor does not brake
Brake lining worn
•
Consult SEW-EURODRIVE
•
Have brake lining replaced by SEW-
EURODRIVE Service or a qualified
technician trained by SEW-
EURODRIVE
Incorrect braking torque.
•
Consult SEW-EURODRIVE
•
Have braking torque changed by
SEW-EURODRIVE Service or a
qualified technician trained by SEW-
EURODRIVE.