The Baldor Electric Company VS1MD21 AC Drive Module is a compact microdrive from the VS1MD family designed to regulate the speed of small AC motors. It is rated for 1 horsepower (0.75 kW) output with a 220–240 V input and uses Frame Size A construction, making it well-suited for space-constrained installations. This drive operates in open-loop V/Hz control, a PWM-based method that provides motor speed control without feedback. Model VS1MD21 specifies an output current of 1.0 A, aligning with its 0.75 kW rating for compact, single-motor applications in automation tasks.
