Instructions for use and maintenance
Electric motors 50-400 V CA
Page
19
of
22
11.2
Troubleshooting
CAUSES
SOLUTIONS
THE
MOTOR
IS
NOT
WORKING
- No voltage to the motor
- Incorrect connection of motor phases
- Incorrect transducer cable connection
- PTC operation (motor temperature over
120°C)
- Check driver power supply
- Verify sequence phases
- Check encoder/resolver
connections
- Wait for motor temperature to
lower and check load
THE
MOTOR
SNAP WHEEL
OR
VIBRATE
VISIBLY
- Incorrect connection of motor phases
- Incorrect transducer cable connection
- Inadequate shielding
- Incorrect setting of motor parameters
- Unaligned transducer
- Verify sequence phases
- Check encoder/resolver
connections
- Check shielding connections
- Verify correct insertion of motor
parameters on the driver
- Check encoder/ resolver phasing
THE
MOTOR
IN
STATIONARY
TORQUE"
OSCILLATES
SLIGHTLY
- Incorrect transducer cable connection
- Check encoder/resolver
connections
- Check shielding connections
THE
MOTOR
IS
RUNNING
IRREGULAR
- Presence of interferences
- Check the presence near the
motor of sources of noise ( relays,
solenoid valves, telehandlers,
etc... )
- Check the correct separation
between power and signal cable
- Check shielding connections
OVERCURRE
NT ON THE
MOTOR
- Incorrect connection of motor cables
and/or transducer
- Unaligned transducer
- Incorrect setting of engine parameters
- Check connections
- Check encoder/ resolver phasing
- Verify correct insertion of motor
parameters on the driver
THE
MOTOR
VIBRATES
AND IS NOISY
- Worn bearings
- Incorrect coupling or assembly
- Contact the retailer
- Check coupling and mounting