TAM 00699 17
DSD2 045 – 132 04/2018
Three-phase synchronous motor English
• Are measures in place to ensure that the maximum permitted speed n
max
of the motor cannot be
exceeded? The maximum permitted speed n
max
is the highest permitted operating speed for short-time
duty.
Checks during operation:
• Listen out for unusual noises.
• If scraping, scratching, grinding, or other similar noises occur, stop the drive immediately and locate
the cause.
• Check the motor surface and connection cables for dirt (such as layers of dust, oil deposits,
dampness and leakiness etc.
• Check the maintenance intervals.
Check air inlet and outlet ports for dirt.
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 electrical cables when electrically isolated and secured.
Observe the 5 safety rules for "Isolation" (see Section 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:
Type plate data
Type and scope of the malfunction situation on occurrence of the malfunction
Application data (torque cycle, speed and forces over time; ambient conditions)
The following selection of possible causes can be helpful in the troubleshooting process:
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 on the
converter or controller; rectify
faults
Check control, connections, and
power supply
Repairs carried out by
manufacturer
Check connections and power
supply
Check phase sequence. If
necessary, switch over the
connecting cables
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