Phoenix Contact 1201132, User Manual

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CONTACTRON Speed Starter
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PHOENIX CONTACT 109908_en_00
10.5.8 Slip compensation
Constant slip is necessary to generate magnetic torque for an asynchronous motor.
In operation, the slip is inverted proportionally to the synchronous speed to generate the
same magnetic torque. However, when the synchronous speed is getting lower, the slip is
larger.
In another scenario, the slip increases when the load increases.
It also affects the motor speed accuracy.
Use this parameter to set the compensation frequency and reduce the slip to maintain the
synchronous speed when the motor runs at the rated current. Set the slip compensation
when applying the load or after the acceleration.
Increase the compensation value gradually.
If the actual speed is slower than the reference speed, increase the compensation value.
Otherwise, decrease the compensation value
Can be set
during
operation
Leading alphabet Parameter name Setting range Factory
default

8. Sc- slip
compensation
Slip compensation 0.0 % ... 10.0 % 0.0 %