Variable Displacement Pump A10VSO - Group VH A/S

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RE 92 711/03.00DFR/DFR1 Pressure / Flow ControlIn addition to the pressure control function, the pump flow may bevaried by means of a differential pressure over an orifice or valvespool,Xinstalled in the service line. The pump flow is equal to the actualrequired flow by the actuator.not includedThe DFR1-valve has no connection between X and the tank.in supplyFor function of pressure control see pages 16/17.plugged ontswivel out time t SAswivel in time t Flow loss at qSE vmaxsee page 8 and 9.DFR1Static operating curve(at n 1= 1500 rpm; t oil= 50° C)Bq v maxadjustment rangeq v min20 280operating pressure p [bar]PortsS L1 LStatic operating curve at variable speedBPressure portSSuction portL, L1 Case drain ports ( L1 plugged)XPilot pressure portDifferential pressure ∆p:Adjustable between 10 and 22 bar (higher values on request).Standard setting: 14 bar. If a different setting is required please indicatespeed nin clear text.When port X is unloaded to tank a "zerostroke pressure" ofDynamic flow control operating curvep = 18 ± 2 bar ("stand by") results (dependent on ∆p).The operating curves are average values measured under testconditions with the unit mounted inside the tank.100350300280 Controller data75250 Data pressure controller see page 16.200 Max. flow variation (hysteresis and increase)50150measured at drive speed n = 1500 rpm25100 Size 28 45 71 100 14050∆qv maxL/min 1,0 1,8 2,8 4,0 6,0018DFR pilot oil consumption _________ max. approx. 3 ... 4,5 L/mincontrol timeDFR1 pilot oil consumption _____________ max. approx. 3 L/minflow q vdisplacement V g% ➝flow q v∆q v(see table)∆q v(see table)load pressure [bar] ➝(stand by)NGt SA[ms] t SE[ms] t SEstand by–280 bar 280 bar–stand by 50 bar–stand by28 40 20 4045 50 25 5071 60 30 60100 120 60 120140 130 60 130Brueninghaus Hydromatik 20/40 <strong>A10VSO</strong>
RE 92 711/03.00Unit Dimensions DFR; DFR1 Pressure and Flow ControlBefore finishing your design, please request a certified drawing.Sizes 28…100A 5Bcontrol valve installed herefor anti-clockwise rotationadjustment srew pressurecontroller cut-off pressurecontrol valve installed herefor clockwise rotationadjustment srew for flowcontroller differential pressureXXA4X orifice pluggedon DFR1A1SA 2A 5XBA4A1threaded connection7/16-20 UNF-2BA 3Size 140control valve installed herefor anti-clockwise rotationcontrol valve installed herefor clockwise rotationadjustment srew for flowcontroller differential pressureadjustment srew pressurecontroller cut-off pressureX X orificeplugged onDFR1SA 3A 2NG A 1A 2A 3A 4A 5port X28 109 136 119 40 119 M14x1,5; 12 deep45 106 146 129 40 134 M14x1,5; 12 deep}with adaptor71 106 160 143 40 162 M14x1,5; 12 deep100 106 165 148 40 229 M14x1,5; 12 deep140 127 209 183 27 244 M14x1,5; 12 deep without adaptor<strong>A10VSO</strong> 21/40 Brueninghaus Hydromatik
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Variable Displacement Pump A10VSO - Group VH A/S

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