Motor control features

Scalar motor control

It is possible to select scalar control as the motor control method instead of Direct

Torque Control (DTC). In scalar control mode, the drive is controlled with a frequency

reference. However, the performance of DTC is not achieved in scalar control.

It is recommended to activate the scalar motor control mode in the following situations:

• In multimotor drives: 1) if the load is not equally shared between the motors, 2) if

the motors are of different sizes, or 3) if the motors are going to be changed after

motor identification (motor ID run)

• If the nominal current of the motor is less than 1/6 of the nominal output current of the drive

• If the drive is used without a motor connected (for example, for test purposes)

• If the drive runs a medium-voltage motor through a step-up transformer.