22
DFS/DFY Synchronous Motors
7
Trouble Shooting
7
Trouble Shooting
7.1
Problems with the motor
Problem
Possible cause
Solution
Motor will not start
Lead broken
Check and restore the connections
Fuse blown
Check the servo controller, replace the fuse
Circuit-breaker tripped
Check the circuit-breaker, adjust if necessary, check drive for possible
overload
Servo controller defective, con-
nected incorrectly, set incorrectly
Check servo controller and wiring
Motor will not start,
or starts with
difficulty
Servo controller not set correctly
or overloaded
Check servo controller and wiring
Wrong direction of
rotation
Incorrect control of motor
Check servo controller, check setpoints, change over setpoint leads
Motor hums
Drive blocking
Check the drive
Fault on resolver lead
Check the resolver lead
Brake cannot be released
Check the brake
Servo controller not set correctly
Check servo controller
Motor overheats
(check temperature)
Overload
Check load with controller current if necessary check configuration data
Inadequate cooling
Adjust the cooling air supply, or clear the cooling air passage. Fit forced
cooling fan if necessary
Forced cooling fan not operating
Check the connection and correct it if necessary
Ambient temperature too high
Reduce the power
Selected duty exceeded
Match motor duty to required operating conditions. We recommend getting
expert advice for the selection of the correct drive
Servo controller not optimized
Check servo controller
Too noisy
Ball bearings distorted or damaged Re-align the motor, check the driven machine, replace the ball bearings
(refer to Sec. 5.1)
Rotating parts vibrate
Rectify the cause or correct the imbalance if necessary
Forced cooling fan: foreign matter
in the cooling air passages
Clean the cooling air passages
Содержание DFS 56L/B
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