23 January 2021
Not enough torque to get the motor moving from a start position
Altistart 22, ATS22
All models, all serial numbers
The default settings in the ATS22 cannot produce enough torque to ramp up the Soft Starter, which could lead to overcurrent, overload or excessive starting time faults.
Increasing the parameters below can aid in providing more breakaway torque to get the motor moving and up to speed.
Parameter T90 - Initial Voltage. This value is adjustable from 10% to 50% of the full voltage, in increments of 5%. Factory setting is 30%.
Parameter ILt - Current limit. This is the maximum current allowed during the startup. It is adjustable up to 700% of the Motor Rated Current (In parameter). The maximum value is 350% of the Soft Starter rated current (IcL parameter). Factory setting is 350%.
(To access the ADJ menu, LAC parameter under the SET menu must be set to "on")
Parameter bSt - Boost Time. This provides an 80% pulse of the Line voltage (UIn parameter) for 0.0 to 1.0 seconds. Factory setting is 0.0.