The 266 Series PI Interface provides set point control for the Hoffman Controls 709 Series of PSC motor controls, the 790 Series of ECM motor controls, and the 865-3AA PSC motor control.

The 266-PI Interface accepts a 2-10 VDC or 4-20 mA signal input and will drive the selected Hoffman control as required to meet desired set point level using a proportional plus integral (PI) control algorithm.

This control is typically utilized with a velocity, pressure, or temperature (thermostat) sensor as input. It then provides a signal to drive the motor control so that the input matches the set point on the control.