The Hoffman Controls 760-ECM Manual EC Motor Speed Controller with PWM Output. The Hoffman 760-ECM Series Electronic Motor Speed Controller is designed to provide manually adjustable proportional speed control for energy efficient ECM (brushless dc) motors.
The 760-ECM Series is line voltage independent and requires only a 24 VAC power source.
Motor speed control is accomplished via a pulse width modulated signal from the 760-ECM which drives the ECM motor through it’s dedicated control signal input. If you need 0-10 VDC output instead, please see the 765-ECM product.