Rexroth 0811405157 p/Q Closed loop control amplifier

Applications

The "1-channel p/Q control card" consists of the basic card in Europe format with DC/DC converter and front plate. With the "2-channel p/Q control card", this basic card contains a p/Q daughter card with identical circuit and a joint front plate. 

The supply voltage is 24 V =. The voltage of the valve to be regulated is not supplied via this card. 

Input variables for the cards are the valve position command value, the pressure command value, the actual pressure value and possible control mode signals. The pressure sensors with voltage interface receive their voltage supply from the card (z6/z8). At the card, pressure sensors with voltage and current signal can be connected.

The pressure command value can be specified by means of a potentiometer. The potentiometers can be supplied from the card (z32/b12). 

For control and comparison, the front plate and the circuit board comprise test points for the most important characteristics. 

The circuit of the "2-channel card" is designed so that the controllers on basic and daughter card work in a completely independent manner. In this mode, the card is suitable for controlling 2 valves with integrated electronics. 

An additional channel mode circuit allows for the considerable extension of the possible applications of the described card.

Features

– Suitable for controlling high-response valves with in stalled electronics

– Amplifier with additional electronics (daughter card)

– Analog amplifiers in Europe format for installation in 19" racks

– Valve position control with PID behavior

– Outputs short-circuit-proof

– External shut-off for pressure controller

– Suitable for pressure sensors (1...6 V, 0...10 V, 4...20 mA)

– Supply for pressure sensors

– Cable break detection for pressure sensor

Block Diagram with Pin Assignments