Keba ServoOne junior Device Help

Image 7.70: “Leakage compensation” screen
ID Index Name Unit Description
2849  HYD_Lfe  Leakageflowestimate
2849 0 lfe_Qmin l/min Leakageflowestimate:minimumvalue
2849 1 lfe_Qmax l/min Leakageflowestimate:maximumvalue
2849 2 lfe_K 1/ms Leakageflowestimate:gain
2849 3 lfe_Tn ms Leakageflowestimate:integrationtimeconstant
2850  HYD_PressCon  Hydraulicpressurecontrolparameters
2850 0 Kp rpm/bar Gain
2850 1 KpScale  Gainscaling
2850 2 Tn ms Integrationtimeconstant
2850 3 Tv ms Differentialtimeconstant
Table 7.82: “Hydraulic - Volumetric flow rate” parameters
ID No.: 0842.26B.5-01Date: 09.2020
ServoOne- Device Help
203
7 Control
ID Index Name Unit Description
2850 4 Tp ms Integral-actiontime
2850 5 pMin bar Minimumpermissiblepressure
2850 6 pMax bar
Maximum permissible pressure
2850 7 QMin l/min Minimumflowrate
2850 8 QMax l/min Maximumflowrate
2850 9 PressWindow bar Pressurecontrolparameters
2850 10 decmpLvl bar Levelforactivedecompression
2850 11 decmpRate bar/s Rateforactivedecompression
2850 12 pActScale  ScalingforpAct
2850 13 pAct2Scale  ScalingforpAct2
2850 14 pRange_k % Pressure range threshold
2850 15 pRange_midpoint bar Pressure range midpoint
Table 7.82: “Hydraulic - Volumetric flow rate” parameters (continue)
7.11.9Speedcontrol
The speed of a hydraulic cylinder can be influenced directly with the controlled
volumetric flow rate that is flowing in. The cylinder speed can be determined by
means of a linear position sensor which is coupled to the cylinder. The values from
the cylinder model and the cylinder speed allow the steady-state volumetric flow rate
to be set with precision. (P 2840.13 - AltSpdCon = 0)
If, in the case of double-acting cylinders, force is to be applied in both directions at
will, the simplest application will require at least one changeover valve. In this case,
the speed magnitude will continue to be defined via the volumetric flow rate, i.e. via
the pump speed. Meanwhile, the force direction will be based on the valve position.
Within this context, it is important to take into account that the sign will be reversed in
the relationship between the volumetric flow rate and the speed and that, due to the
different piston/annulus area, the relationship will change as well. The actuation of a
changeover valve, as well as its consideration for the cylinder positioning, are part of
the hydraulic package.

Keba ServoOne junior Specifications

General

Brand	Keba
Model	ServoOne junior
Category	Controller
Language	English