Alpharetta, GA - Brand new MicroMaster 4 inverters share common configuration and operating features, said to simplify installation and start-up, across four performance classes of this 'universal' drive series designed to control 1/6-300 hp ac motors. MicroMaster (MM) 4 has four models: Micro inverter MM410 up to 1 hp (1-phase 120/220 V), a 'contactor'-like drive for simple V/Hz speed control; Basic MM420 up to 15 hp (1- or 3-phase, 230/460 V), offering speed control via V/Hz or flux current control; Variable-torque-rated MM430, which typically handles pumping applications; and MM440, a sensorless vector drive for extreme high torque/dynamic response applications. Closed-loop vector control also can be added to MM440. Various units accommodate worldwide voltages in the 200-600 V range.

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