TAM00720
18
DSM1
10/2015
Three-phase-synchronous motor
English
4.4 Failures
Safety instructions:
Troubleshooting and correction of failures must be executed by qualified personnel,
only.
Do not take safety devices out of operation – not in the test run either.
Remove and mount connecting cables off circuit and within a protected state, only.
Observe the 5 safety regulations of “Release” (see section 3.3).
Observe hot surfaces!
Always observe the following at failures:
•
The operation manual of the machine/installation
•
The operation manual of the inverter
•
Contact the manufacturer of the motor or inverter, if required
The following parameters must be kept at hand:
•
Rating plate data
•
Type and degree of failure; attendant circumstances of the failure
•
Application data (speed cycle, speed and power, which exceeded the time, environmental
conditions)
The following selection of failure causes can help to detect errors:
Failure
Cause of error
Correction
Motor doesn’t start-up
Controller enable is missing
Controller error, encoder error
Brake doesn’t release
Brake is defect
Voltage supply is missing
Rotating field
Activate controller enable
Read out the error list at the
inverter or the controller, correct
the errors
Triggering, check connecting
and voltage supply
Manufacturer must repair
Check connecting and voltage
supply
Check phase sequence, ex-
change connecting cables, if
required
Irregular running
Shielding of the connecting
cables are insufficient
Controller parameters too high
Check shield connection and
grounding
Optimize controller parameters
Vibrations
Coupling elements or work
machine is badly balanced
Nonconform alignment of
driveline
Fastening screws are loose
Re-balance
Realign the machine unit
Check and fasten the screwed
fastenings
Failure
Cause of error
Correction
Running noises
Foreign particles in the motor
Motor manufacturer must
