Fan switches and potentiometers
Fan switches and potentiometers
EC fan potentiometers are used to control the speed of EC fan by signal 0 – 10 V or - when the cable length is very long between potentiometer and fan – by PWM signal. They also could be used to control frequency inverter or damper actuator by signal 0 – 10 V. Three-step switches control 3-speed single phase fans.