Programmable logic controller (PLC)
to process the program and their connections are regarded as factors that cannot be altered. PLCs may be equipped with control units which work by bits or by words (EDIN 19 226 T 5). In contrast to the
Electronic Flow Sharing
principle distributed proportionally to the respective requirements of the valves. In addition, there may be requirements regarding the maintenance of certain functions, so that priorities must be set for
Final controlling device
assumes a predetermined position in the case of a failure or end of the activation order. This property may be used, for example for safety technical measures ( rest position ) (according to DIN 19 237).
Particle size
Dimensions of solid contamination elements or foreign particles in the pressure fluid. These impurities may be caused by various things: debris associated with metallic and non-metallic particles produced by
Cavitation
value. This critical value is generally about as high as the vapour pressure for the fluid. Cavitation may take the form of: flow cavitation oscillation cavitation bubble cavitation. Flow cavitation is of
Pressure-limiting valve
P to T) and the oil viscosity that is present during this. In the case of higher flow rates, this may mean that the pressure setting is exceeded (high flow resistance). For this reason directly controlled
Transmission method
The transport of data between digital devices may take place either in be parallel or in series. In the case of parallel transmission, one channel (one line) per bit is required, whereas in series transmission
Load sensing system
stage as a result of an adjustment to the flow rate for pump Q 1 . The individual pressure compensator may be located upstream or downstream of the metering orifice. If the pressure compensator is located