Mooring control
this, the displacement is adjusted in line with the pilot pressure , while maintaining a constant torque level, although this may be modified in accordance with the conditions. If the cable is not under
Monitoring
Review of certain variables in terms of complaints with predetermined values, ranges or switching states. The variables to be monitored can be measured directly or may be the result of an evaluation (DIN [...] in which the desired state is saved and which issues an assessment of the state through comparisons with the actual values ( Figure U 12 ). Thus monitoring is a prerequisite for identifying damage at an
Digital signals
Discrete signals with a finite number of value ranges for the signal parameter where each value range is assigned as a whole to a specific item of information. Digital signals can also have multiple parameters [...] parameters (DIN 19 226). In control technology digital signals are only used with two value ranges ( binary signals ). A digital signal comprises several parallel binary signals (Figure D 27 a) that combined
Energy saving in hydraulics
measures (Table E 2) : Design improvements on pumps and valves by the manufacturer, Selection of designs with better efficiency by the user, Reduction of the power losses by means of corresponding dimensioning [...] multiple pumps or variable pumps , Energy-saving circuits ( load sensing, closed circuit , motors with secondary regulation), Measures for energy recovery.
Plug-in valve, 2-way plug-in valve
some circumstances even with the multiple operation of an individual plug-in valve. The layout is typically that of seated valves that are inserted in a bore in accordance with DIN 24 342 and that are [...] function of a 4-direction valve is replaced by four single valves that can now be operated, e.g. also with overlaps ( Figure Z 16 ). This procedure is cost effective because the same basic 2/2 unit can also
Flow control valve
Throttle valve with adjustable throttle ( measuring throttle , A P), in which the flow remains constant through the combination of the valve with a control throttle (, A R), regardless of the changing [...] takes place under the respective load pressure plus approximately 5 bar; therefore, with less energy loss than with 2-way flow control valves (cf. throttle control). To configure the circuit of flow control [...] required must therefore be removed from the circuit via the pressure-limiting valve for the system; i.e. with high losses (cf. throttle valve). 3-way flow control valve : The measuring throttle and the control
Transmission method
channel (one line) per bit is required, whereas in series transmission, only one channel is needed, with the individual bits transferred one after another as impulses. As a rule, parallel data transmission [...] The key characteristic of synchronous, series data transmission is the exact matching of the data with the clock signal on the bus. As soon as the baud rate of the series data transfer is present, the [...] symbol when it is ready to send such a symbol. Between the symbols, a continuous break signal, normally with a higher level, is issued: Each data unit in an asynchronous data flow must carries its own synch
Types of friction
torque. Rolling & sliding friction is rolling friction with an overlaid sliding component (slip). Spinning friction is the dynamic friction with relative rotation around an axis turning perpendicular to
Pressure amplifier
time the transmission ratio of the pressure amplifier. It is possible to operate with the same pressure fluid and also with different pressure fluids (e.g. compressed air/ oil) in the two pressure systems
Constant flow system
ignored. Constant flow systems in an open circuit are therefore always fitted with constant pumps (in a closed circuit, with a variable pump ) and can only operate one load at a time ( Figure K 30 ). If