TAM 00682
17
DSC 045-100
07 / 2012
Three-phase synchronous motor
English
•
Check the motor surface and connection cables for dirt, e. g., layers of dust, oil deposits,
dampness, etc.
•
Check the maintenance intervals.
•
Check air inlet and outlet ports for fouling.
5.4
Malfunctions in operation
Safety instructions:
Troubleshooting and rectification must only be performed by qualified personnel.
Do not disconnect any of the safety devices – even during test runs.
Only disconnect and connect connection cables when they are electrically isolated and
secured.
Observe the 5 safety rules for "Isolation" (see
Sect. 4
).
Beware of hot surfaces!
In case of malfunctions in operation always
• Refer to the operating instructions for the machine/system.
• Refer to the operating instructions for the converter.
• If necessary, contact the manufacturer of the motor or converter.
Have the following information 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 of possible causes can be helpful in the fault rectification process:
Malfunction
Cause
Remedy
Motor does not start
No controller enable
Controller fault, encoder fault
Brake does not release
Faulty brake
No power supply
Rotating field
Activate controller enable
Read out fault list at converter
or controller; rectify fault
Check control, connections,
and power supply
Repairs carried out by
manufacturer
Check connections and power
supply
Check phase sequence. If
necessary, replace the
connection cables
Uneven running
Insufficient screening on
connecting cables
Controller parameters too high
Check screening connection
and grounding
Optimize controller
parameters
