Issue:
A pump is oscillating (or surging) up and down when ramping up to speed on the ATS48 soft starter?
Product line:
Altistart ATS48
Environment:
All models, all serial numbers
Cause:
Excessive motor slip
Resolution:
In the drC menu, reduce LSC. Generally, LSC = 30 will suffice.
LSC = Stator Loss Compensation
Oscillations are most common when controlling a motor with excessive slip.
Another option is to turn off the torque control. In the drC menu, set CLP = OFF.
Refer to the ATS48 Programming manual S1A37491
A pump is oscillating (or surging) up and down when ramping up to speed on the ATS48 soft starter?
Product line:
Altistart ATS48
Environment:
All models, all serial numbers
Cause:
Excessive motor slip
Resolution:
In the drC menu, reduce LSC. Generally, LSC = 30 will suffice.
LSC = Stator Loss Compensation
Oscillations are most common when controlling a motor with excessive slip.
Another option is to turn off the torque control. In the drC menu, set CLP = OFF.
Refer to the ATS48 Programming manual S1A37491
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