The SK 200E series distributed size 4 AC vector drives from NORD Gear Corp. (Waunakee, WI) offers power capacity to 30 HP. The drives are capable of operating up to 15-HP motors on 200 to 240 VAC 3-phase power, and up to 30-HP motors on 380 to 500 VAC 3-phase power. The drive mounts directly to the motor and not in the control panel. The drive offers sensorless current vector control (ISD), plug-in memory-storage module (EEPROM) for storing application-specific drive settings on a transferrable memory module, diagnostic LEDs, internal 24V control power supply with the option to provide external 24V control power, and POSICON positioning control with incremental or absolute encoder feedback.

The drives also include cover-mounted trim potentiometers, an electromechanical motor brake power supply, and an integral cooling fan. They feature both digital and analog inputs as standard. These inputs give the drive many options to apply basic process control, governing aspects of the operation including flow, pressure, and temperature. Four configurable digital inputs are available, as well as two digital outputs. The drives are available in two protection classes for various installation environments. Standard IP55 version drives feature protection from limited ingress, dust, and low-pressure water jets.

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Motion Control & Automation Technology Magazine

This article first appeared in the June, 2013 issue of Motion Control & Automation Technology Magazine.

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