Vickers - Eaton

1 Vickers 3-Way cartridge valves with Spool Position FeedbackType CVU-**-EPQ; Sizes 32 and 50 Flow Rates up to 750 L/min (200 USgpm)Maximum Pressure: 315 bar (4500 psi)This product has been designed and tested to meet speci c standards outlined in the European Electromagnetic Compatibility Directive (EMC) 89/336/EEC,amended by 91/263/EEC, 92/31/EEC and 93/68/EEC, article 5. For instructions on installation requirements to achieve e ective protection levels, see thislea et and the Installation Wiring Practices for Vickers Electronic Products lea et 2468. Wiring practices relevant to this Directive are indicated by Electromagnetic Compatibility (EMC).

2 3-Way cartridge valves with Spool Position Feedback2 ContentsGeneral Description and Functional SymbolsPage 3 System Components for Flow Control ModePage 4 System Components for p/Q ModePage 4 Model Codes:CVU-**-EPQ cartridge valve and pilot valvePage 5 CVU-**-EPQ cartridge Valve:Operating DataPage 6 Performance Data:Pressure Gain and Signal/Flow Rate functionPage 7 Frequency ResponsePage 8 Installation DimensionsPage 9 Pocket Machining details for CVU-32-EPQ1 Pages 10 & 11 Pocket Machining details for CVU-50-EPQ2 Pages 12 & Pilot Valve:Installation DimensionsPage 14 Integrated Electronics: Block DiagramPage 15 Integrated Electronics: Wiring ConnectionsPage 16 Application DataPage 173-Way cartridge valves with Spool Position Feedback3 This catalog presents the 3-port cartridge valve,type CVU-**-EPQ, as the primary functionalelement in two types of system:1.

3 Flow controland2. p/Q, pressure and flow hydraulically operated CVU-**-EPQ valve mustbe controlled by a separate proportional-solenoid-operated pilot valve, for which recommendationsare included in the catalog. The size 3 pilot valve isavailable with integral control electronics, valvetype KBSDG4V-3, allowing direct connection withthe user's control 3-way function provides fully controllablethrottling action between service port A and eitherinlet port P or outlet port T according to spoolposition, with a closed transient. In the normalcondition ( no hydraulic pilot pressure) the spoolis biased by the integral spring to give the flow path A to T.

4 This may be referred to as the failsafe valves are intended for use in open andclosed-loop control systems, and the publishedperformance data herein is applicable only whenthey are used in such systems with the appropriateVickers pilot valve and associated Pressure ControlThe zero overlap condition of the main spoolenables the EPQ valve to be used in a pressurecontrol mode, with the control loop being closed bya pressure transducer sensing pressure in theoutlet port A .Single/Double Pilot ControlModel Type EPQ1 The controlling hydraulic pressure from port A ofthe remote pilot valve is connected to the full areaat the top of the spool via connection X in themounting interface.

5 Spool position is thendetermined by the relationship between the input(demand) signal and the LVDT feedback Type EPQ2In addition to the pilot connection via port X , port B of the pilot valve is connected to the spoolannulus area via a second pilot port, B , in the 3-way cartridge . Thus the spool is actively controlledin both directions of travel by pilot Face and Pocket DimensionsThe EPQ series 3-port cartridge valves are basedon the general design concepts of 2-port cartridgevalves to ISO 7368 (DIN 24342). That is, they havethe same manifold surface mounting interface, butdiffer in having deeper pocket recesses toaccommodate the longer, 3-way spool.

6 Further-more, these pockets vary according to whether theselected model is single or double-pilot operated,see Single/Double Pilot Control below. Full detailsof pocket machining dimensions are given in DescriptionCVU-**-EPQF unctional SymbolsCVU-**-EPQ22222 Double pilot operationCVU-**-EPQ11111 Single pilot operationAPTXAPTXB3-Way cartridge valves with Spool Position Feedback4 Flow Control ModeSystem ComponentsFor p/Q ).ylbmessaenorofsi"deriuqerytitnauQ"ehT( .onmetInoitacificepSderiuqerytQylbmessar ep23ezisroF1201-83-9-1 QPE-23-UVC38NE-*1-**-42-L69-3-V4 GDSBK1105ezisroF1201-57-9-2 QPE-05-UVC38NE-*1-**-04-L69-3-V4 GDSBK11sezisllaroF3275133-201 XBATPAPTD emand4-pin connector7-pin connector132 Pilot pages 14, 15 & 16 CableSee page ).

7 Ylbmessaenorofsi"deriuqerytitnauQ"ehT(.o nmetInoitacificepSderiuqerytQylbmessarep 23ezisroF1201-83-9-1 QPE-23-UVC38NE-*1-**-42-L69-3-V4 GDSBK1105ezisroF1201-57-9-2 QPE-05-UVC38NE-*1-**-04-L69-3-V4 GDSBK11sezisllaroF34275133-2002-A-102-DI P-AHE 11 . single pilot version, -EPQ1- is shown. The pilotand control recommendations apply equally to thedouble piloted version, connector7-pinconnector132 Pilot pages 14, 15 & 16 CableSee page 94 PID controller transducer (not supplied by Eaton ):Output options for controller module compatibility:0 to 10V, 4 to 20 cartridge valves with Spool Position Feedback5 Model Codes4 servo Controlled 3-Way Valve5 Pilot OperationApplicable to size 32 only:1- Single pilot operationApplicable to size 50 only:2- Double pilot operation6 Mounting Bolts9- Metric mounting bolts RatingCode EPQFlow rating.)

8 SizeL/minUSgpm38 - 3238010075 - 507502008 Design NumberInstallation dimensions unchanged for designnumbers 10 to 19 Valve (with Integral Electronics)1 Seal MaterialF3- VitonOmit for Nitrile rubber2 cartridge Valve Unit3 Nominal SizeMounting face ( not pocket) identified as for 2-port cartridge to ISO 7368 (DIN 24342).32 - 09 (NG32)50 - 11 (NG50)(F3-)CVU- **- EPQ *- 9- ** - 1*12567834 KBSDG4V-3-96L-**-**-H7-1*- EN831519121818 Design number, 10 seriesInstallation dimensions unchanged for designnumbers 10 to 19 FeaturesEN83 - 1. The integral electronics are optimizedfor use with the -EPQ*- valve, and2.

9 The addition and location of a 4-pinsocket for the primary with integral amplifiers are suppliedwith or without the metal 7-pin ensure that the EMC rating and IP67 rating areachieved:1. The Vickers plug, part no. 934939, must becorrectly fitted. The plug retaining nut must betightened with a torque of 2,0 Nm ( lbf ft) toeffect a proper The securing nuts of the co-axial 4-pinconnector cable must be correctly fitted andtightened with a torque of 0,5 Nm ( lbf ft).The specification of these valves is fixed except forthe customer's choice of the 7-pin plug connectionas set out below.

10 See 15A full description of the model code features can befound in catalog , (positions 15and 18 conform to this catalog).12 Rated flow at 70 bar (1000 psi) loop Dppressure drop (for precise details of ratings referto catalog )24 - Specify for use with CVU-32-EPQ*40 - Specify for use with CVU-50-EPQ*15 Electrical connectionPC7 - 7-pin connector without plugPE7 - 7-pin electrical plug with mating halfPH7 - As PE7 but with pin C used for enablesignalPR7 - As PC7 but with pin C usedfor enable signal3-Way cartridge valves with Spool Position Feedback6 Operating DataCVU-**-EPQ*scitsiretcarahCstroplla,e russerpmumixaM)isp0054(rab513 Btropotdeilppa(erusserplortnoctoliP)