A DSP microprocessor controls the soft-starting process digitally.

DSP Digital Control

Voltage-regulated and contactor-free operation are available; contactor-free operation requires forced-air cooling.

Starting Strategies

Supports voltage-ramp, constant-current and constant-time starting.

Adjustable Starting Modes

Supports free stop, soft stop and braking stop.

Multiple Stop Modes

Starting current can generally be limited to approximately three times rated current.

Starting-current Control

Monitors operation and protects against phase loss, stall, voltage faults, short circuit and overheating.

Monitoring and Protection