Proportional directional valves

Transcription

1 /4 Proportionl directionl vlves 6.9 Type 4WRE nd 4WREE NG 6 nd p to r p to 8 L/min Contents Function nd configurtion Symols Ordering code Technicl dt 4 Electricl connections, plug-in connectors Integrted electronics -7 Chrcteristic curves 7- nit dimensions -4 Fetures - Direct operted proportionl directionl vlve with electricl position feedck - Closed loop control of the direction nd size of flow - Opertion is y proportionl solenoids with centrl thred nd removle coil - For suplte mounting: Porting pttern conforms to ISO 44 - Spring centred control spool - Integrted electronics (OE) with voltge input or current input ( resp. F) - 4WRE seprte order: nlogue module mplifier 797

2 /4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE Function nd configurtions 4WRE(E) re operted y proportionl solenoids with centrl thred nd removle coil. The solenoids re optionlly controlled y either externl electronics (type 4WRE) or y the integrted electronics (type 4WREE). The vlve siclly consists of: Housing (), Compression springs (), Control spool (), nd Solenoid (4 nd ) with centrl thred, Solenoid() with position trnsducer nd optionl integrted control electronics (6). In the de-energised condition the spool () is held in mechnicl centre position y the solenoid return springs (). With the solenoids (4), de-energised, the control spool () is held in the centrl position y the compression springs ( ). Direct opertion of the control spool () y energising one of the proportionl solenoids (4, ) e.g. control of solenoid right, then movement of the control spool () to the left in proportion to the electricl input signl, nd connection from P to nd to T vi orifice-like crosssections with progressive flow chrcteristics. 6 T P T 4 Type 4WRE...-LX/... T (P) Type 4WREE 6...-LX/... 4WRE(E)...-LX the switched position vlves re however only fitted with solenoid "". plug (7) is fitted in plce on the "" proportionl solenoid. 7 Type 4WRE 6...-LX/... G Type 4WREE...-LX/... G o o P T P T G o P T P G o T 798

3 Directionl vlves Type 4WRE nd 4WREE Hydrulic components Hengli hydrulic /4 Symols Without integrted electronics With integrted electronics Type 4WRE...-LX/... G o o P T P T G Type 4WREE...-LX/... Type 4WRE...-LX/... Type 4WREE...-LX/... G o P T P G o T Ordering code Without integrted =No code With integrte = E Nominl size 6 =6 Nominl size = Spool symols o 4WRE - LX G4 o P T =E E- =V / / 4WRE: 4WREE: * Further informtion in plin text V = FKM No code = NR No code = For 4WRE: Interfce or F for 4WREE: = Commnd vlue input ±V F= Commnd vlue input 4 to m Z4= With plug-in connector K4= Without plug-in connector K= Without plug-in connector Z= With plug-in connector o o P T =W W- =E LX= Power supply voltge of electric control device: G4= Power supply voltge 4VDC Series L~L9 (L to L9,unchnged instlltion nd connection dimensions) Trnsitionl symols With symols E -nd W-: P : q v mx T: q v / P : q v / T: q v mx =W Note:For spools W nd W there is, in the neutrl position, connection etween to T nd to T with pprox.% of the elevnt nominl crossse-ction. Nominl flow t vlve pressure differentil ΔP=r NG 6: 8= 8L/min 6= 6L/min = L/min NG : = L/min = L/min 7= 7L/min 799

4 4/4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE Technicl dt. Hydrulic Instlltion Optionl, preferly horizontl Nominl size 6 Weight 4WRE...LX. 6. Kg 4WREE...LX.4 6. Nominl flow q nom t Δp = r L/min 8, 6,,, 7 Hysteresis %. Reversl spn %. Response sensitivity %. Mx.operting pressure Pressure fluid mient ir temperture rnge Ports,, P r Port T r Minerl oil (HL, HLP) to DIN 4 Other pressure fluids on request! 4WR...LX - to 7 (-4 F to 8 F) 4WRE...LX - to (-4 F to F) Viscosity rnge mm²/s to 8 (preferly to 46) Fluid Clenliness Clss NS68 clss9 or ISO 44 clss /8/. Electricl ) Solenoid dt Nominl size 6 Voltge type Commnd vlue signl for 4WREE Mx.current per solenoid. Solenoid coil resistnce DC ±V or 4 ~ m Cold vlue.7.7 Ω Mx.wrm vlue 4.. Duty % ED% Mx.coil temperture Vlve protection to EN 69 IP 6 ) Control electronics mplifier Supply voltge mplifier power consumption 4WRE...LX VT-VSP-...-LX 4WREE...LX integrted in the vlve(oe) Nominl voltge VDC 4 Lower limiting vlue V 9.4 pper limiting vlue V Imx < Impulse current 8

5 Directionl vlves Type 4WRE nd 4WREE Hydrulic components Hengli hydrulic /4 Electricl connections, plug-in connectors nominl dimensions in mm For type 4WRE...LX (without integrted electronics) Connections on the component plug Plug-in connector to DIN EN 7-8 or ISO 44 PE PE Connections on the plug-in connector PE PE To the mplifier To the mplifier For type 4WREE...LX (with integrted electronics (OE)) 7. For pin lloction lso see lock circuit digrm. Plug-in connector to DIN EN 7-84 Φ8. Φ6.~Φ F C E D Inductive position sensor Coil wiring 4 To the mplifier connect to the plug 4 signl connect to the ground power connect to the ground Signl Supply To the mplifier Coil 6 7 Pg7 Plug connector 4 pin Pg7-G4WF Connecting cles: Recommend: For cles up to m in length, Plese use cle of type LiYCY 4. mm Connect the shield to the PE only on the supply side. 7,8 Φ 8

6 /4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE Integrted control electronics for type 4WREE Component plug lloction Supply voltge Reference potentil (ctul vlue) Differentil mplifier input Mesurement output (ctul vlue) Contct Interfce signl Interfce F signl 4 VDC((t)=9.4V to V), I mx = V C ref.contct F, Re>KΩ ref.contct F, Re<Ω D ±V, Re>KΩ 4 to m, Re>Ω E Reference potentionl commnd vlue F PE ± V ctul vlue (limiting lod m) 4 to m ctul vlue, lod resistnce mx.ω Connected with cooling ody nd vlve housing Commnd vlue: ctul vlue: Connection cle: positive commnd vlue to +V (or to m) t D nd the reference potentil t E results in flow from P to nd to T. negtive commnd vlue to V (or to 4 m) t D nd the reference potentil t E results in flow from P to nd to T. For vlve with solenoid on side (e.g. spool vrints E nd W) positive commnd vlue t D nd the referencepotentil t E results in flow from P to nd to T. positive ctul vlue to +V (or to m) t F nd the reference potentil t C results in flow from P to nd to T, negtive ctul vlue to V (or 4 to m) t F nd the reference potentil t C results in flow from P to nd to T. With vlves with solenoid, positive ctul vluet F nd referencepotentil t C results in flow from P to nd to T. Recommended: up to m cle length type LiYCY 7.7 mm² up to m cle length type LiYCY 7. mm² For outside dimeter see plug-in connector sketch Only connect screen to PE on the supply line. Integrted electronics (OE) for type 4WREE...LX 7pin Interfce Integrted electronics (OE) Vlve Com.vlue Ref.potentil ct.vlue Ref.potentil D E F C Differentil mplifier Rmp genertor ) ct.vlue Controller Output I Input I nder voltge recognition Interlock Supply 4V Voltge GND Protective ) PE conductor Power supply +i V -i Oscilltor = Demodultor = ) Position Sensitivity Zero point trnsducer 8

7 Directionl vlves Type 4WRE nd 4WREE Hydrulic components Hengli hydrulic 7 /4 Integrted control electronics for type 4WREE Note: Electricl signls processed y control electronics (e.g. ctul vlue) must not e used for switching off sfety relevnt mchine functions! ) The protective conductor (PE) is connected to the cooling ody nd the vlve housing! ) The rmp is externlly djustle from to. s, the sme pplies for T up nd T down. ) Zero point is externlly djustle. ) ) F E D E C ±V ctul position +4V V Reference ctul position ±V/4..m signl input Reference signl input Chrcteristic curves (mesured with HLP46, ϑ oil =4 ± ) Type 4WREE (NG 6 nd ) Pressure-signl-chrcteristic curves (V spool, Ps = r) NG 6 NG P L in% P S P L in% P S E EN in% E EN in% Lekge flow with the spool in the centrl position Type 4WREE6 V Type 4WREE V7 Lekge flow L/min Lekge flow L/min Working pressure in r Working pressure in r 8

8 8/4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE Chrcteristic curves (mesured with HLP46, ϑ oil =4 ±, P=r) Type 4WREE (NG 6 nd ) NG 6 Flow in L/min Flow in L/min L/min nominl flow t r vlve pressure differentil P / T or P / T V spool Commnd vlue in % L/min nominl flow t r vlve pressure differentil P / T or P / T V spool E nd W spools Commnd vluein % NG L/min nominl flow t r vlve pressure differentil 8 P / T 7 or P / T Flow in L/min E nd W spools Flow in L/min 6 4 Mx.permissile flow Flow in L/min 7 6L/min nominl flow t r vlve pressure differentil P / T or P / T Commnd vluein % Δp=r constnt Δp=r constnt Δp=r constnt 4 Δp=r constnt Δp=r constnt Δp=Vlve pressure differentil (inlet pressure p p minus lod pressure p L minus return pressure p T ) L/min nominl flow t r vlve pressure differentil P / T or P / T 4 4 V spool E nd W spools V spool E nd W spools Commnd vlue in % V spool E nd W spools Commnd vlue in % Flow in L/min L/min nominl flow t r vlve pressure differentil P / T or P / T V spool E nd W spools Commnd vlue in % Mx.permissile flow Δp=r constnt Δp=r constnt Δp=r constnt 4 Δp=r constnt Δp=r constnt Δp=Vlve pressure differentil (inlet pressure p p minus lod pressure p L minus return pressure p T ) 84

9 Directionl vlves Type 4WRE nd 4WREE Hydrulic components Hengli hydrulic 9 /4 Chrcteristic curves Type 4WREE (NG 6) (mesured with HLP46, ϑ oil =4 ±, P=r) Strokein % Signl chnge in % Trnsient function with stepped form of electricl input signl 4/ vlve version, Spool symol E 4 Time in ms - mpitude reltionship in d Frequency in Hz Phse ngle in Frequency response chrcteristic curves 4/ vlve version, Spool symol V Signl±% Signl±% Signl±% Flow in L/min Flow-pressure differentil curve Lod function with mximum vlve opening. Nominl flows 8, 6 nd L/min. Spool symol V Mx.permissile flow P / T or P / T Vlve pressure differentil in r Tke the mximum permissile flow of 8 L/min into ccount! 8

10 /4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE Chrcteristic curves (mesured with HLP46, ϑ oil =4 ±, P=r) Type 4WREE (NG ) Signl chnge in % -- Strokein % Trnsient function with stepped form of electricl input signl 4/ vlve version, Spool symol E Time in ms - mpitude reltionship in d Frequency in Hz Phse ngle in Frequency response chrcteristic curves 4/ vlve version, Spool symol V Signl±% Signl±% Signl±% Flow in L/min 4 8 Flow-pressure differentil curve Lod function with mximum vlve opening. Nominl flows, nd 7 L/min. Spool symol V 7 Q mx =7L/min Mx.permissile flow P / T or P / T Vlve pressure differentil in r Tke the mximum permissile flow of 8 L/min into ccount! 8

11 Directionl vlves Type 4WRE nd 4WREE Hydrulic components Hengli hydrulic /4 nit dimensions (nominl dimensions in mm) Type 4WRE6...LX Φ7.6 mx M;./mm.7 P T Instlltion Dimensions Mounting surfce Required surfce finish of the vlve mounting surfce Vlve housing Proportionl solenoid "" with inductive position trnsducer Proportionl solenoid "" 4. Plug-in connector "" 4. Plug-in connector "" Nme plte 6 Identicl sel rings for ports,, P nd T (R-ring or O-ring 9..78) 7 Plug for vlves with one solenoid ( switching positions, versions E or W) 8 Plug-in connector for inductive position trnsducer 9 Spce required to remove the plug-in connector Vlve mounting screws The following vlve fixing screws re recommended: - 4 S.H.C.S.ISO M G / T 7. - M Tightening torque M = 8.9 Nm ± % 87

12 /4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE nit dimensions (nominl dimensions in mm) Type 4WREE6...LX Φ7.6 mx M;./mm T.8.7 P Required surfce finish of the vlve mounting surfce Instlltion Dimensions Mounting surfce.9 Vlve housing Proportionl solenoid "" with inductive position trnsducer Proportionl solenoid "" Nme plte 6 Identicl sel rings for ports,, P nd T (R-ring or O-ring 9..78) 7 Plug for vlves with one solenoid ( switching positions, versions E or W) Plug-in connector Integrted electronics (OE) Vlve mounting screws The following vlve fixing screws re recommended: - 4 S.H.C.S.ISO M G / T 7. - M Tightening torque M = 8.9 Nm ± % 88

13 Directionl vlves Type 4WRE nd 4WREE Hydrulic components Hengli hydrulic /4 nit dimensions (nominl dimensions in mm) Type Type 4WRE...LX Φ. mx 9. T P T /mm.8 Instlltion Dimensions Mounting surfce 4 M6; Required surfce finish of the vlve mounting surfce Vlve housing Proportionl solenoid "" with inductive position trnsducer Proportionl solenoid "" 4. Plug-in connector "" 4. Plug-in connector "" Nme plte 6 Identicl sel rings for ports,, P nd T (R-ring.6 or O-ring ) 7 Plug for vlves with one solenoid ( switching positions, versions E or W) 8 Plug-in connector for inductive position trnsducer 9 Spce required to remove the plug-in connector Vlve mounting screws The following vlve mounting screws re recommended: - 4 S.H.C.S.ISO M G / T 7. - M Tightening torque M =. Nm ± % 89

14 4/4 Hengli hydrulic Hydrulic components Directionl vlves Type 4WRE nd 4WREE nit dimensions (nominl dimensions in mm) Type 4WREE...LX T P T. Φ. mx /mm.8 Required surfcefinishof the vlve mounting surfce Instlltion Dimensions Mounting surfce 4 M6; Vlve housing Proportionl solenoid "" with inductive position trnsducer Proportionl solenoid "" 4 Nme plte Identicl sel rings for ports,, P nd T (R-ring.6 or O-ring ) 6 Plug for vlves with one solenoid ( switching positions, versions E or W) 7 Plug-in connector 8 Integrted electronics (OE) Vlve mounting screws The following vlve fixing screws re recommended: - 4 S.H.C.S.ISO 476-M G/T 7.-M Tightening torque M =.Nm±% 8