Position controller for pressure-operated actuating drive, has additional voltage input that is formed as another electrical input supply for power supply to current-pressure-converter and separated from electrical, analog input supply

摘要

The controller has an electronic circuit for comparison of reference and actual position values, and for output of control signals that are received by a current-pressure-converter to control an actuating drive. An electrical, analog input supply supplies electric power to the circuit. An additional voltage input (4) is formed as another electrical input supply for power supply to the converter, and is separated from the analog supply.