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Pressure created by flow resistances which must be overcome when feeding back the pressure fluid (to the tank).

Function group consisting of several switching or control elements grouped together on an assembly unit (e.g. control block ).

Term for — mainly slow-speed — hydraulic motors with very high displacement and therefore very high torque. High torque motors are generally designed as multi-stroke hydrostatic motors in terms of the

Most important group of pressure gauges on which the measuring organ deforms elastically and proportionally to the pressure. This deformation is therefore a direct measure of the magnitude of the pres

that has the task of adjusting the pressure in a system as a controlled variable as accurately as possible to a setpoint (Figure D 70) .

Velocity is a variable derived from the distance or angle. It can be obtained either by direct measurement or by differentiating the position. Differentiation of analogue signals If the position is av

This is a 2/2- Directional valve that is designed for installation in a control block . If came about as a result of efforts to simplify controls by breaking down the functions of conventional directi

Valve with a proportional connection between the input signal and the flow rate in a working line (consumer port) and in one effective direction. This includes construction designs of proportional flo

Component that actuates a device (e.g. valve ). This can be a lever or cam ( mechanical actuation ), a solenoid or electric motor ( electric actuation ) or a piston or cylinder ( pressure actuation ).

In a normal controller the main tasks for signal handling and signal processing arise in the setpoint branch (e.g. time profiles, ramps etc.). Such tasks can be resolved all the better digitally, the