Q: What are the key differences between an Inverter Drive and a Soft Start?

A: A soft start gradually increases the voltage at the motor input terminals, at a fixed frequency, to limit starting current, which increases starting time and gives a soft start for the motor. With a Soft Start there is no available speed control for the motor. While an Inverter Drive varies its output frequency, output voltage and current to the motor to allow precise control of both speed and torque. The Inverter Drive also has a built in adjustable soft start for the motor, so has the best of both worlds.