User Guide

Acceleration time, also called ramp-up time, controls the time between when the motor starts and then it reaches its required speed.

The default value is xx s. This timing may not be suitable for your particular application. The acceleration time can be adjusted.

If the acceleration time is too short it will produce an overcurrent condition.

Deceleration time, also called ramp-down time, controls the time that is taken to slow the motor down, normally to a standstill.

The default value is xx s. This timing may not be suitable for your particular application. The deceleration time can be adjusted.

During deceleration, the motor speed is faster than the synchronous speed, which is equivalent to the Clean Power VFD output frequency.

In this condition, the motor functions as a generator and returns the energy to the Clean Power VFD. This is why DC voltage increases.

This operation is called regeneration.

If the deceleration time is too short it will produce an overvoltage condition.