Solenoid Pilot Operated Proportional Directional Control Valve

Transcription

1 Solenoid Pilot Operated Proportional Directional Control Valve Features hese solenoid pilot operated proportional directional control valves use a nozzle flapper valve as pilot valve and perform spool position feedback control by detecting the displacement of the main valve with the differential transformer. Nomenclature SEM - G Model No. SEM: Solenoid pilot operated proportional directional control valve 2 Connections G: Gasket mount type Design No. (he design No. is subject to change) Option code I No designation: Without driver A: Driver installation type * Nominal diameter 3: ⅜ 4: ½ : ¾ Spool type and spool operating method (See the spool type table) Note: * 1 he driver installation type applies only to nominal diameters 3 ( 3 /8) and 4 (½). Specifications Model No. SEM-G3- -2 Nominal diameter ⅜ Maximum operating pressure MPa {kgf/cm 2 } Rated flow rate * 2 L/min SEM-G4- -2 ½ 21 {21} 17 SEM-G- -2 ¾ 3 Permissible back pressure at drainage line MPa {kgf/cm 2 } 1.4 {14} 7 Option code II No designation: With filter block P:, with reducing valve (MG-2P-1-) Hysteresis, resolution, repeatability. % maximum Supplied pressure MPa {kgf/cm 2 } Pilot valves Required flow rate L/min 3 to {3 to } 2.7 to 3. 3 to 7 {3 to 7} 4 to 7 Saturated current ma 2 Note: * 2 he rated flow rate indicates the value at 1 land differential pressure: P= 1 MPa {1 kgf/cm 2 }. Filtration accuracy of filter block: 7 µm 4 : Spool type table Spool type and spool operating method C D IS graphic symbols for hydraulic system P X P X P X P X : Specifications of installation type driver : Model code of separate installation type driver Power supply voltage Command input Output current Power consumption Input impedance DC ±1 V 1% (ripples included) DC to ±1 V ma or more Approx. W 17 ±4 kω Valve model code SEM-G - -2 Model code KSV-2-1 Applicable driver Power supply voltage AC, 2, 22 V (Common for / Hz) -49

2 Mass (kg) Model No. (1) (2) (3) (4) SEM-G SEM-G SEM-G Note: Mass (1) Without driver, with filter block (2) Driver installation type, with filter block (3) Without driver, with filter block, with reducing valve (4) Driver installation type, with filter block, with reducing valve Accessories Sub-plate model code he sub-plate is not provided with the valve. Order it separately as required by specifying the model code given in the table below. Model No. Model code Nominal diameter SEM-G S-M ¾ S-M8 Connection port diameter Rc¾ Rc1 Refer to Page S-9 for the dimensions of the sub-plate. Note: No sub-plate is provided for SP-G3, 4. Mass kg.2 Model No. Hexagon socket head cap bolt Quantity ightening torque N m {kgf cm} SEM-G3 M to 14 {11 to 14} SEM-G4 M to 14 {11 to 14} M to 8 {3 to 8} SEM-G M12 94 to 118 {94 to 118} Wiring guide (driver installation type) Pin arrangement (driver installation type) Pin No. 1 : to ±1 V Signal name 1 2 Spool displacement check 3 DC +1 V ±1% (ripples included),. A minimum [Supplied power] 4 V [Supplied power] 4 2 DC 1 V ±1% (ripples included),. A minimum [Supplied power] Handling Directly connect the drain piping to the tank without merging it with other tank piping. his valve uses an external pilot and adopts the external drain type. his valve is equipped with a filter block (model: MFB-2-7-1) as standard to protect the pilot valve. Contamination of the hydraulic fluid causes valve trouble and reduces the service life, so pay due attention to controlling contamination and ensure that it goes no higher than NAS contamination class 9. he input voltage - flow rate characteristics vary from valve to valve. Even when using valves of the same model, the flow rates of individual valves have to be finely adjusted. Do not touch the zero adjusting screw of the differential transformer since it is factory adjusted. Use shielded cables for connecting the differential transformer. (Applicable cable diameter: φ7) For specifications with a reducing valve (option code II: P), the pressure setting at shipment is as shown in the table below. Model No. Set pressure MPa {kgf/cm 2 } SEM-G3 {} 3 SEM-G4 SEM-G 7 {7} -

3 Performance curves (viscosity: 32 mm 2 /s {cst}) - Flow rate characteristics (1 land differential pressure: P = 1 MPa {1 kgf/cm 2 }) SEM-G3-A (driver installation type) SEM-G4-A (driver installation type) SEM-G (without driver) P A 1 P A P A P B (V) P B (V) P B 4 (V) Load pressure - Flow rate characteristics SEM-G3-A (driver installation type) SEM-G4-A (driver installation type) SEM-G (without driver) V 2 V 1.2 V Load pressure (MPa) { 1 kgf/cm 2 } Frequency response characteristics SEM-G V 2.2 V 4.1 V 1. V Load pressure (MPa) { 1 kgf/cm 2 } SEM-G V 2.8 V 2.3 V 3.8 V Load pressure (MPa) { 1 kgf/cm 2 } Gain (db) % ± 1% fluctuation Gain Phase Phase delay (deg) Gain (db) % ± 1% fluctuation Gain Phase Phase delay (deg) Frequency (Hz) SEM-G Frequency (Hz) Gain (db) % ± 1% fluctuation Phase Gain Phase delay (deg) Pilot pressure: 7 MPa {7 kgf/cm 2 }, MPa { kgf/cm 2 } for G3 Note: Frequency characteristics of the spool displacement voltage in reference to input voltage Frequency (Hz) -1

4 External dimension diagram SEM-G3- -2 Connector for differential transformer SNS-1PCF (from Sanwa Denki Kogyo) φ11 4-φ A P B -φ11 -φ φ8 2-φ12 Air bleeding screw (2 locations) 7 SEM-G3- -2-P Maximum 11 Pilot port X X P Drain port Mounting face (conforming standard) ISO MG-2P-1- SEM-G3- -2-A MFB Plug RM12WBP-S-(7) Receptacle RM12WBR-P X A P B Air bleeding screw (2 locations) 9-2

5 External dimension diagram SEM-G4- -2 MFB Connector for differential transformer SNS-1PCF (from Sanwa Denki Kogyo) φ17. 2-φ11 4-φ11 2-φ (4.) 94 4-φ φ1 27 Air bleeding screw (2 locations) φ12 9 φ A B P X Mounting face (conforming standard) ISO SEM-G4- -2-P MG-2P Maximum 11 SEM-G4- -2-A MFB Plug RM12WBBP-S-(7) Receptacle RM12WBR-P Air bleeding screw (2 locations) 9-3

6 External dimension diagram SEM-G- -2 MFB Connector for differential transformer SNS-1PCF (from Sanwa Denki Kogyo) -φ2 -φ φ23 2-φ 4-φ34 2-φ φ A B X P SEM-G- -2-P 19 Maximum MG-2P Mounting face (conforming standard) ISO

7 Sectional structural diagram SEM-G Sealing part table Part No. Name SEM-G3 SEM-G4 SEM-G Quantity Part specifications Quantity Part specifications Quantity Part specifications 3 O-ring IS B 241 1B P12 4 IS B 241 1B P22A 4 IS B 241 1B P28 31 O-ring 2 IS B 241 1B P9 1 IS B 241 1B P9 1 IS B 241 1B P12 2 IS B 241 1B P2 SEM-G - -2-A O-ring 1 AS8-23 (NBR, Hs9) 1 IS B 241 1B P34 1 IS B 241 1B P4 33 O-ring IS B 241 1B P 2 IS B 241 1B P7 34 O-ring 1 AS8-13 (NBR, Hs9) 1 IS B 241 1B P34 1 IS B 241 1B P4 3 O-ring 2 IS B 241 1B P14 2 IS B 241 1B P14 2 IS B 241 1B P14 3 O-ring 8 IS B 241 1B P9 8 IS B 241 1B P9 8 IS B 241 1B P9 37 O-ring 1 IS B 241 1B P8 1 IS B 241 1B P8 1 IS B 241 1B P8 38 O-ring 1 IS B 241 1B P11 1 IS B 241 1B P11 1 IS B 241 1B P Sealing part table SEM-G3 SEM-G4 Part No. Name Quantity Part specifications Quantity Part specifications 3 O-ring IS B 241 1B P12 4 IS B 241 1B P22A 1 IS B 241 1B P9 37 O-ring 2 IS B 241 1B P9 1 IS B 241 1B P12 38 O-ring 1 AS8-23 (NBR, Hs9) 1 IS B 241 1B P34 39 O-ring IS B 241 1B P 2 IS B 241 1B P7 4 O-ring 1 AS8-13 (NBR, Hs9) 1 IS B 241 1B P34 41 O-ring 2 IS B 241 1B P14 2 IS B 241 1B P14 42 O-ring 8 IS B 241 1B P9 8 IS B 241 1B P9 43 O-ring 1 IS B 241 1B P8 1 IS B 241 1B P8 44 O-ring 1 IS B 241 1B P11 1 IS B 241 1B P11 -