Yaskawa CIMR-H3.7B.D04 Variable Frequency Drive

The Yaskawa CIMR-H3.7B.D04 Varispeed 616HII Transistor Inverter is an AC variable frequency drive designed to control speed and torque of 3-phase induction motors in industrial automation. It accepts a ~460 VAC class three-phase input, provides an adjustable output voltage proportional to frequency via PWM transistor inverter (V/f control), and typically supports output frequencies up to ~400 Hz. As part of the legacy Varispeed 616HII family, it is commonly mounted in panels for general-purpose motor speed control in conveyors, pumps, fans, and machine tools, and is used for replacement or retrofit of older drives. Common replacements include CIMR-AU4A0004FAA and CIMR-VU4A0004FAA (also CIMR-AC4A0004FAA).