EATON 伺服阀培训

DirectionalServoValves•SM4-10•SM4-12•SM4-15•SM4-20•SM4-40•SM4-60Newin2007•SX4-10thru20ServoValveFeatures•Reliableflapper–nozzledesign•2Stageoperationw/mechanicalfeedback•Widerangeofcoilstomeetcompetition•Jeweledorifices•Jeweledfeedbackeliminatesspoolrotationand“nullglitch”.•Flowrangesfrom1GPMto40GPM(@1000PSI.)•Customspoolsfromoverlaptounderlapconfigurations•Industrystandardmountingpatterns•Filteredpilotstageflow•Externalpilotcapabilities•Pressuresto5000PSI•Bandwidthsupto350HZ•“IntrinsicallySafe”Capabilities````SERVOVALVESERVOVALVE-BODYConstructionoftheservovalvestartswiththebody.DirectionalServoValvesSERVOVALVESLEEVEThebodyisfittedwithasleeveinorderthatthespoollandscanbeaccuratelymatchedtothesleeveports.SERVOVALVE-SPOOLThebodyisfittedwithasleeveinorderthatthespoollandscanbeaccuratelymatchedtothesleeveports.SERVOVALVE-PILOTFILTERAfilterforthepilotsupplyisalsofittedinthemainbody.SERVOVALVE-PILOTSUPPLYThebodyend-capsareusedtoconnectpilotoilfromthefiltertothepilotstageofthevalve.SERVOVALVE-NOZZLEBLOCKSERVOVALVE-PILOTNOZZLESThepilotstageincludestwonozzles...SERVOVALVE-TORQUEMOTOR...andatorquemotor.Attachedtothetorquemotorarmatureisaflapperplatewhichextendsdownthroughthetwopilotnozzlesandlocatesinarecessinthemainspool.SERVOVALVEWhenthevalveisde-energised,theflapperiscentredrelativetothetwopilotnozzlessopressuresoneitherendofthemainspoolareequalandthemainspoolisalsocentred.SERVOVALVEThetorquemotorisfittedwithapermanentmagnetframesurroundingthearmature.SERVOVALVEPassingacurrentthroughthetorquemotorcoilsmagentisesthearmatureandcausesittotilt.Thedirectionofthetiltisdeterminedbythevoltagepolarityandtheamountoftiltbythemagnitudeofthecurrent.SERVOVALVEThetiltingofthearmaturecausestheflappertomoveclosertoonenozzleandfurtherawayfromtheoppositenozzle.SERVOVALVE...causingthemainspooltomoveandflowtopassthroughthevalve.Asthemainspoolmoves,theflapperisdraggedbacktothecentreofthetwonozzleswhenthepilotpressuresequaliseandthespoolstopsmoving.SERVOVALVE名称型号流量压力伺服阀SM4-10/12/1557l/min210bar伺服阀SM4-20-1076l/min210bar伺服阀SM4-20-5076l/min350bar伺服阀SM4-30,113l/min140bar伺服阀SM4-40151l/min350bar伺服阀SX476l/min350bar伺服阀电子附件放大板、电源、功能模块和控制器伺服阀功率放大器EHA-PAM-291-A-20伺服阀安装与故障诊断指南SERVOVALVEPRODUCTS