Port
flow path in a device to which pipes for the transport of the hydraulic fluid to or from the device can be connected. As the type of port has a major effect on how the installation is assembled, ports on
Word length
Also known as the data length, this is the number of bits that can be jointly transferred and processed in a computer. It is used to classify microprocessors and microcomputers. There are currently: 4
Charge pump
systems is "charging" a pump in the open circuit (due to improved filling in the priming phase, it can be run at a higher rotation speed) and in the closed circuit (to replace leakage losses and to flush
Velocity feedback control circuit
controlled variable as accurately as possible to a setpoint . For this purpose the actual velocity can be measured via a velocity transducer ( velocity measurement ) or calculated from the distance measured
Controller for damping (high pass filter)
the pressure oscillations in the drive and controls the downstream damping devices . This assembly can operate mechano-hydraulically (e.g. hydraulic accumulator or as a spring-loaded piston, each with throttle
Pressure actuation
Feature that actuates the device on a pressure change in the control line. The actuation can be direct or indirect. Direct pressure actuation occurs if the hydraulic pressure acts directly on the actuating
Ageing of seals
contained in mineral oil act like a vulcanising agent on elastomers. For this reason vulcanisation can occur at high temperatures; this action is termed ageing. The consequence of the further cross-linking
Logic control
common names, such as parallel control, pilot control, interlocking controls are to be avoided as they can cause confusion (DIN 19 237).
Fluid power systems with main pipe
loads (drive elements) are supplied by one drive power pack. The fluid power system with main pipe can combine such loads, which do not interact, because e.g. they come in succession ( drive systems ).
Underlap compensating signal
valves (before the start of switching). (DIN 24 311). The size of the underlap compensating signal can be configured on the amplifier card ( proportional amplifier ) of the proportional valve .