altNORD Gear Corp (Waunakee, WI) offers the NORDAC SK 500E and 520E AC vector frequency inverters. Both feature high torque, rapid response, and wide spread range for extended power outputs ranging from 0.25 kW to 7.5 kW. Available in sizes between 7.32 × 2.99 × 5.94" and 11.26 × 3.86 × 7.01", and features selectable modes for sensorless vector modes for closed-loop flux vector control, optional position control, and additional I/O. Other features include local operation through inverter controls, integrated dynamic braking chopper, automatic motor parameter identification, integrated Class A filter, side-by-side mounting, field bus compatibility, and high overload capability (150% – 60 sec., 200% – 5 sec.).