Keba ServoOne User Manual

Designation
Description Parameters
Index
pRef
PressurereferencevaluepRef 2847
2
pressAct
PressureactualvaluepAct 2847
0
PressureactualvaluepAct2 2847
1
Oneofthetwovalues,selectableusingP
2840[3]Pressuredifference=pAct - pAct2
2847
2847
0
1
Qmax
Max.volumetricflowratelimitQMax
Max.volumetricflowratesetpointQRef
Oneofthetwovalues,selectablewith
P 2840[6, 7]
2850
2847
8
3
Qmin
Min.volumetricflowratelimitQMin
Min.volumetricflowratesetpointQRef
Oneofthetwovalues,selectablewith
P 2840[6, 7]
2850
2847
7
3
Kp, τn
PI(D)pressurecontroller(derivativeterm
notimplementedatthetimeofwriting)
2850
0-4
nRefPump
Pumpspeedsetpoint 2843
9
nmin
nmax
Speedlimitpressurecontrol
2851
2851
5
6
nRefMot
Motorspeedsetpoint 2843
12
PressWindow
Pressurewindow“Pressurereached” 2850
9
Legend for “Structure of pressure control”
ID Index Name Unit Description
2850  HYD_PressCon  Hydraulicpressurecontrolparameters
2850 0 Kp rpm/bar Gain
2850 1 KpScale  Gainscaling
Gainscaling
2850 2 Tn ms Integrationtimeconstant
2850 3 Tv ms Ratetime
2850 4 Tp ms Integral-actiontime
Table 7.80: “Hydraulic - pressure control” parameters
ID No.: 0842.26B.5-01Date: 09.2020
ServoOne- Device Help
200
7 Control
ID Index Name Unit Description
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
2853  HYD_PressConScale  Scalingofthepropertiesofthepressurecontrolgain
2853 0 pMin bar Minimumpermissiblepressureofthecharacteristic
2853 1 pMax bar Maximumpermissiblepressureofthecharacteristic
2853 2 Nval  Numberofinterpolationpoints
2853 3 Type  Interpolationtype
2853 4 Table0 % ScalingTableValue0
2853 5 Table1 % ScalingTableValue1
2853 6 Table2 % ScalingTableValue2
2853 7 Table3 % ScalingTableValue3
2853 8 Table4 % ScalingTableValue4
2853 9 Table5 % ScalingTableValue5
Table 7.80: “Hydraulic - pressure control” parameters (continue)
7.11.8Volumetricflowratecontrol
7.11.8.1Volumetricflowratecontrolwithpressurelimitation
If the reference variable for the volumetric flow rate that needs to be set is
QRefInput, the implemented volumetric flow rate control can be used. Generally,
QRefInput can be converted to an equivalent motor setpoint speed nRefPump
using the displacement volume and QLeak can be disregarded during the process.

Keba ServoOne Specifications

General

Brand	Keba
Model	ServoOne
Category	Controller
Language	English