Unico, Inc. - Franksville, WI
Distributor, Manufacturer, Custom Manufacturer
Worldwide manufacturer of standard & custom interface & signal converters including phase-converting AC drives. Features include motor independent design, auto tuning, modular design, digital current regulators, insulated gate bipolar transistors (IGBTs), pulse-width modulation (PWM) & digital signal processing (DSP). Available in voltage ratings from 230 Vac to 480 Vac & power ratings to 125 hp. Applications include variable-frequency (V/Hz) or flux vector control of three-phase induction or synchronous AC motors from single-phase power source.
www.unicous.com/en/1000.html

WAGO Corp. - Germantown, WI
Manufacturer, Custom Manufacturer
ISO 9001:2000 & ISO 14001:2004 certified custom manufacturer of AC to AC signal converters including stepper controllers. Controllers are available in 12 mm to 42 mm width with 12 mm terminal RS422 interface. Suitable for enabling acceleration control functions of time, travel & number of steps.
Brand Names: Wago
www.wago.us/products/10793.htm