Servovalves with integrated Electronics D791 and D792 Series

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D791 and D792 SeriesValve electronics withsupply voltage ± 15 VoltCommand signal 0 to ±10 VValves with voltage commandinputThe spool stroke of the valve isproportional to (U D– U E). 100%valve opening P ç A and B ç T isachieved at (U D– U E) = +10 V. At0 V command the spool is in acentred position.The input stage is a differentialamplifier. If only one commandsignal is available, pin D or E isconnected to signal ground ^(pin C) according to the requiredoperating direction (to be done atthe mating connector).Command signal 0 to ±10 mAValves with current commandinputThe spool stroke of the valve isproportional to (I D– I E). 100%valve opening P ç A and B ç T isachieved at (I D– I E) = +10 mA. At0 mA command the spool is in acentred position.Either pin D or E is used accordingto the required operating direction.The unused pin is left open(not connected at the mating connector).The input pins D and E areinverting.Actual value 0 to ±10 VValves with voltage commandinputThe actual spool position valuecan be measured at pin F. Thissignal can be used for monitoringand fault detection purposes.The spool stroke range correspondsto ±10 V. 100% valve openingP ç A and B ç T correspondsto +10 V.Actual value 0 to ±10 mA or4 to 20 mAValves with current commandinputThe actual spool position valuecan be measured at pin F. Thissignal can be used for monitoringand fault detection purposes.The spool stroke range correspondsto ±10 mA (4 to 20 mA).100% valve opening P ç A andB ç T corresponds to +10 mA(20 mA).General requirementsr Supply ± 15 VDC ± 3%. Ripple
D791 und D792 SeriesOrdering informationD791, D792Model-Numbern n n n nnType designationnn n n n n n n n n n nSpecification status- Series specificationE Preseries specificationZ Special specificationModel designationassigned at the factoryFactory identificationassigned at the factoryValve versionS Servovalve 3-stageSupply voltage0 ± 15 VDC ± 3%, Ripple < 50 mV ppSignals for 100% spool strokeCommand OutputA ±10 V ±10 VB ±10 mA ±10 mAP ±10 mA 4 to 20 mAValve connectorS 6 + PE-pole DIN 43563Rated flowQ N[l/min] at Dp N= 35 bar per land Series10 100 D79116 160 D79125 250 D79140 400 D79263 630 D79280 800 D79299 1 000 D792Maximum operating pressure p PJ 315 bar. At p X£ 315 bar (X and Y external) operating pressurein ports P, A, B and T up to 350 bar possibleK 350 barMain spool typeO 4-way: axis cut, linear characteristicSeal materialU FPM (Viton), PUR (Ultrathan) only for bushing, only D791V FPM (Viton) only D792others on requestPilot connections and pressurePressure Supply Return[bar] X YE 15 to 315 internal internalF 15 to 315 external externalG 15 to 315 external internalH 15 to 315 internal externalJ 25 to 350 internal internalK 25 to 350 external externalL 25 to 350 external internalM 25 to 350 internal externalPilot valveP D761 StandardQ D761 High responseR D765 High responseS D765 StandardSpool position of main stage without electrical supplyPosition Pilot pressure [bar]O undefined ³15A P ç B, A ç T ³15B P ç A, B ç T ³15Preferred configurations are highlighted.All combinations may not be available.Options may increase price.Technical changes are reserved.11
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Servovalves with integrated Electronics D791 and D792 Series

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