A current loop driven regulator. Regulates a arbitrary device with two relays. Both either connect or disconnect grid power. A deadtime between these two states ensure the regulator never activates both relays.
The customer scenario included a contactor driving a industrial pipe valve in a variable manner. After a setup for the limit mapping of the valve positions to the range of a current loop (Fully closed - Fully open) => (4mA - 20mA) the regulator manages the valve and ensures a correct position accoring to the setpoint input value at all times.