Gap extrusion
Property of an elastomer seal to become squeezed behind the seal under the influence of pressure in the sliding gap, causing damage to the seal ( Figure S 65 ). Remedy: Another material back ring made
Signal path
Graphical representation of the transfer of a signal between two or more functional elements or operating materials (DIN 40 719 T 61).
Open-centre position
In the case of three-directional valves, in the centre position, all ports can be connected to one another –– and therefore with the workflow (requires negative overlap).
Hydrostatic energy
Energy produced by the effect of the pressure of a fluid.
High pass (filter)
Electronic circuit that allows high-frequency signals to pass through unchanged, but results in a reduction in amplitude and a phase lead at low frequencies (Figure H 7) .
Velocity amplification
Defines the degree to which the velocity x at the zero point (y = 0) increases as a function of the deflection of the control element y, if the load is zero (Figure G 12) .
Back pressure
Pressure that acts against a force or another pressure over an area (according to DIN 24 312).
Sequence control
Sequential control system that is called a "process-dependent sequence control" according to DIN 19 237.
Equivalent time constant
This includes the Delay T u as the time defined by the time from the arrival of the control signal to the intersection of the inflection line with the abscissa and the Settling time T g as the time de
Rapid traverse
Transport motion with high speed to cover the free travel from the end position to the start of operation.