Hydraulic System Solutions for Plastics Processing ... - Bosch Rexroth

14Consistent Optimum Control ofPressure-Flow and ForceSYHDFEE with analog OBEEfficiency and reliability – theseare the features of Rexroth pumptechnology for plastics applications.It has improved itself in alarge number of machines manufacturedworldwide.To meet the high demands placedon hydraulic systems for injectionmolding machines, pumps of theType A10VSO/A4VSO with DFEEproportional control are usuallyselected, as they generate accurateflow and pressure that is requiredfor machine functions. The DFEpump electronically controls bothflow and pressure, swiftly and withprecision, just as with all subsequentmachine cycles, and withoutrequiring any other proportionaltechnologies. Flow control withoutany throttling pressure loss makesinjection molding machines fittedwith a DFE pump the optimumsolution with respect to hydraulicefficiency.The pressure-compensated versionof the A10VSO/A4VSO pump comesas part of the standard equipmentthat most machine manufacturersuse for conventional, proportionalvalve-controlled injection moldingand blow molding machines. A widerange of control options makes theA10VSO/ A4VSO pump flexibleenough for every casting and moldingapplication.The DFE proportional pump controltechnology is also availablewith fieldbus control as a DFEC.By modifying parameters via thefieldbus the pressure control canbe optimally matched to each motionaxis in the system.