Pneumatic and electropneumatic controllers

Pneumatic and electropneumatic controllers

Command memory modules and pulse stage connectionsA special electropneumatic command memory module enables the combination of recurring start and stop functions as well as operating mode preselection conditions. A pulse stage chain consists of a number of memory elements (bistable valves), the pulse stage modules. They are interconnected in such a way that a switching step can only be triggered when it is its turn, i.e. when the previous switching step has been successfully executed and this has been reported back. A pulse stage module is assigned to each switching step or single cycle. Electropneumatic controllers according to the pulse stage method have a clear structure and are easy to service thanks to a built-in pressure indicator and manual override.

Pulse oscillator VLGThe pulse oscillator (multivibrator) is used to generate continuously adjustable signals in controllers. It is used for quick cylinder movements in diaphragm cylinders and single- as well as double-acting drives. Short-stroke, quick piston rod movements are necessary to excite vibratory conveyors, for knocking dirt off extraction systems and for bunkering or moving small sieve shakers.