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Every machine or even every cylinder , provided its movements overlap with others, has a dedicated pump with a size based on the highest load speed v k required (Figure E 13) . This means that high sp

Servo valve

Hydraulic drive unit operated electrically using a stepper motor or DC motor with integrated control unit ( following control valve ) and integrated, mostly mechanical feedback . The following control

Hydraulic (pressurised) actuation of a valve by a small, directly solenoid actuated valve (pilot valve). Here the pilot valve is mostly directly on the main valve (Figure E 19) . With this combination

Area of hydraulics in which the devices are controlled electrically (as a rule by means of solenoids, in some circumstances also by control motors). This statement includes in the signal area also ele

Actuation of the adjustment equipment in a pump/ motor by an electric motor. Permits in general adjustment speeds that are not very high. Mostly slower than electro-hydraulic adjustment.

The force required to actuate a valve . The control force reaches its maximum value at the full input signal and is zero with zero input signal. Here there is a device-specific dependency for the outp

Collective term for all measuring procedures that convert mechanical (physical) measured variables into proportional electrical signals. These are therefore always indirect measuring procedures. The c

Signal processing with switching elements such as contactors among others. This technology is outdated, complex and slow. It is therefore only used for small, relatively simple systems. Exception: Saf

Signal area in which the signal input , signal linking and signal processing are with electrical components. These are predominantly switches, relays and contactors. Electric signal processing has bec