Low Power Pneumatic Valve
There is a strong competition on the field of pneumatic drives and electrical drives. To reinforce the position of the pneumatic drive technology on the market of automation products this technology has to be measured at the capability of the competitor. Special attention has to be taken on the control architecture of vertical and horizontal communicating and interacting components. In this context the information-technical qualification (?) of pneumatic components gets more and more important. This applies to all parts of the chain according to device, beginning at sensors via the information transfer ending up with the pneumatic drive components. The information transfer by means of field bus technique enables the production of system modules with peripheral intelligence, which can be structured and tested first. In the entire plant these modules are networked by the field bus technique. For the direct link of the electromechanical transformers to modern field bus systems so far the most attention was spend on the minimization of the electrical consumption.
Figure 1: Exemplary field bus connection of a fluid power axis with CAN
For this bases and concepts, to permit a leakage-free or leakage-poor operation of the pneumatic amplifier stage, have to be developed. Contrary to the most common on/off-drives for proportional working drives, there is a increased demand on sensors and of course a local controller. An analysis of the energy consumption of all necessary electrical and electronic components of a pneumatic axis is to point out a possible solution for further energy savings.