TAM 00624 16
DS 100 – 200 03 / 2005
Three-phase synchronous motor, air-cooled English
4.4 Malfunctions
Safety instructions:
Troubleshooting and error recovery may only be carried out by qualified personnel.
Do not disconnect any of the safety devices – even during test operations
Only disconnect coolant pipes when depressurized
Only disconnect and connect electrical connection cables when in de-energized and
protected condition
Observe the 5 safety rules for “Disconnecting” (comp. Section 3.3).
Beware of hot surfaces!
In the event of a malfunction
• refer to the operating instructions of the machine/system
• refer to the operating instructions for the converter
• If necessary, contact the manufacturer of the motor or converter
Have the following parameters ready:
nameplate data
type and scope of malfunction
circumstances leading up to the malfuntion
application data (torque cycle, speed and forces over time; ambient conditions)
The following selection possible causes can be helpful in the fault correction process:
Fault Cause Recovery
Motor does not start No controller enable
Controller error, encoder error
Brake doe not release
Brake defect
No power supply
Rotating field
Activate controller enable
Read out error list at
converter or controller, rectify
error
Check connections and power
supply
Repair by manufacturer
Check connections and power
supply
Check phase sequence, if
necessary, replace
connecting cables
Uneven running Insufficient screening on
connecting cables
Controller parameters too high
Check screening connection
and grounding
Optimise controller
parameters
Vibrations Coupling element or work
machine poorly balanced
Inadequate alignment of the
drive train
Fixing screws loose
Rebalance
Realign machine set
Check and tighten screwed
connections
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