Catalog HY14-255/US echnical Information ilot Operated ressure Reducing Valves Series VMY*6 General Series VMY*6 valves consist of the main stage with valve spools and the pilot stage with the proportional solenoids. he desired pressure can be variably set corresponding to the command signal specified on the amplifier. he proportional solenoid converts the current of the amplifier into force on the valve poppet of the pilot stage. In the pilot stage, there is a flow limiter which supplies the pilot valve with pressure-independent pilot oil flow from the pressure port. he proportional pressure reducing valves of the series VMY*6 allow the variable adjustment of the reduced pressure from bar up to p max. ypical applications are pressure systems, test equipment, or counterweight systems. he electrical control of the valve takes place using the digital amplifier module CD-4. Use in closed pressure control circuits is also possible. he valve is distinguished by its constancy. Features Consistent performance. Variable adjustment. ilot operated with proportional solenoid. Subplate according to ISO 5781. Ordering Information VMY Reducing Valve ressure Range 64 64 ar (928 SI) 1 1 ar (145 SI) 16 16 ar (232 SI) 21 21 ar (3 SI) 315 315 ar (45 SI) K Linear Solenoid 6 NG6 6 Valve Size Function ilot Oil V ilot Drain V Seal Fluorocarbon N 1) Internal External 2) Internal Internal 1) connection on drain port only 2) p min = bar possible Neutral osition Neutral osition Design Series NOE: Not required when ordering. Y(G1/4) With the proportional solenoids de-energised the main spring forces the main spool into the neutral position. ort is connected to port. hus the reduced pressure only depends on the back pressure in the external drain pipe and/or the tank pressure and can accordingly be reduced down to bar. he pressure present in the line delivers the pilot oil to the pilot stage via a flow control valve. When the proportional solenoid is energised, the pilot pressure is increased in the pilot pressure area, and the main spool moves against the spring until the connection - opens. he regulation of the reduced pressure on connection takes place by the constant comparison of the actual pressure and the reference pressure of the pilot stage. High ressure Channel Weight: 2.8 kg (6.2 lbs.) old: Designates ier I products and options. Non-old: Designates ier II products and options. hese products will have longer lead times. 43 arker Hannifin Corporation Elyria, Ohio, US
Catalog HY14-255/US Specifications ilot Operated ressure Reducing Valves Series VMY*6 General Design roportional Reducing Valve Size NG6 Mounting attern ISO 5781 ctuation roportional Solenoid Mounting osition ny mbient emperature -2 C to +7 C (-4 F to +158 F) Hydraulics Operating ressure, orts, and 315 ar (45 SI) depresssurized Flow 4 LM (1.6 GM) djustment Range 64, 1, 16, 21, 315 ar (928, 145, 232, 345, 4568 SI) ressure Medium Hydraulic oil as per DIN 51 524 to 525 ressure Fluid emperature +3 C to +5 C (+86 F to +122 F) Recommended -2 C to +7 C (-4 F to +158 F) Maximum Viscosity Range 3 to 5 mm²/s (135 to 23 SSU) Recommended 2 to 38 mm²/s (9 to 175 SSU) Maximum Max. Contamination Level ISO 446 (1999) 18/16/13 Linearity See erformance Curves Repeatability <±2% Hysteresis ±1.5% to p max Response ime <15 ms Manufacturing olerance ±5% to p max Electrical Duty Cycle rotection Class Nominal Voltage Maximum Current mbient emperature Coil Resistance lug Connectors ower mplifier 1% ED I54 at DIN 45 (plugged and mounted) 9 VDC 2.5-2 C to +7 C (-4 F to +158 F) 2.1 ohm at 2 C (68 F) 2 pole + E / connector EN 17531-83 / cable Ø 8 to 1mm CD-4 44 arker Hannifin Corporation Elyria, Ohio, US
Catalog HY14-255/US erformance Curves ilot Operated ressure Reducing Valves Series VMY*6 resssure Curves where p = f(u set ) Setting Range max. 64 ar (87 SI) Setting Range max. 21 ar (345 SI) Step Response ypical Curve SI ar 58 35 435 3 26 ar (377 SI) SI ar 58 35 435 3 26 ar (377 SI) Without accumulator plate With accumulator plate H6 VMY-135 363 25 363 25 29 218 2 15 145 1 9 ar (131 SI) Dead oil volume in line V = 5cm3 29 218 2 15 145 1 9 ar (131 SI) Dead oil volume in line V = 3cm3 73 5 73 5 5 1 15 2 25 3 35 4 5 1 15 2 25 3 35 4 ime t (ms) ime t (ms) Note: ccumulator late H6 VMY - 135 Height: 4 mm (1.58 in.) 45 arker Hannifin Corporation Elyria, Ohio, US
Catalog HY14-255/US erformance Curves ilot Operated ressure Reducing Valves Series VMY*6 p/q erformance Curves measured at t = 5 C (122 F) and v = 35mm 2 /s Setting Range max. 64 ar (87 SI) Setting Range max. 1 ar (145 SI) SI ar 145 1 SI ar 174 12 116 8 87 6 58 4 Flow - 1% Imax 5% Imax Flow - 145 1 116 8 87 6 58 4 Flow - 1% Imax 5% Imax Flow - 29 2 m LM 4 3 GM 1.6 7.9 p min 2 1 1 2 3 5.3 2.6 2.6 5.3 7.9 4 1.6 29 2 LM 4 GM 1.6 m pmin 3 7.9 2 5.3 1 1 2 3 2.6 2.6 5.3 7.9 4 1.6 Setting Range max. 16 ar (232 SI) Setting Range max. 21 ar (3 SI) SI ar 29 2 SI 377 ar 26 261 18 23 16 1% Imax 319 22 1% max 23 14 174 12 145 1 116 8 87 6 58 4 29 2 LM 4 GM1.6 m p min 3 7.9 Flow - 2 5.3 5% Imax Flow - 1 1 2 3 2.6 2.6 5.3 7.9 4 1.6 261 18 23 14 145 1 87 6 29 2 LM 4 GM 1.6 Flow - Flow - 5% Imax m p min 3 2 1 1 2 3 7.9 5.3 2.6 2.6 5.3 7.9 4 1.6 Setting Range max. 315 ar (45 SI) SI ar 493 34 435 3 377 26 319 22 261 18 23 14 145 1 Flow - 1% Imax 5% Imax Flow - 87 6 29 2 LM 4 GM 1.6 m p min 3 2 7.9 5.3 1 1 2 3 2.6 2.6 5.3 7.9 4 1.6 46 arker Hannifin Corporation Elyria, Ohio, US
Catalog HY14-255/US echnical Information ilot Operated ressure Reducing Valves Series VMY*6 Dimensions Inch equivalents for millimeter dimensions are shown in (**) 7. (.28) 13.5 (.53) 4.5 (1.59) 31. (1.22) G11 141. (5.55) 143. (5.63) Y G1/4 Y 48. (1.89) 73.5 (2.89) 6. (2.36) 8. (.31) 2. (.79) 65. (2.56) 133. (5.24) 45. (1.77) 45. (1.77) Surface finish olt kit DIN912 12.9 FM K-M5x3-4pcs 7.5 Nm (5.5 lb.-ft.) SK-VMY-L6-V Mounting attern ISO 5781-3-4-- 31. ±.1 (1.22 ±.4 ) 12.7 ±.2 (.5 ±.8 ) 5.1 ±.2 (.2 ±.8 ) 15.5 ±.2 (.61 ±.8 ) 25.9 ±.2 (1.2 ±.8 ) 12.5 (.49) 4.5 ±.1 (1.59 ±.4 ) 33. (1.3) 3.2 ±.2 (1.19 ±.8 ) 21.5 ±.2 (.85 ±.8 ).75 ±.1 (.3 ±.4 ) he connection must be blocked on the subplate for standard applications. 46. (1.81) 32.5 ±.1 (1.28 ±.4 ) max. 7.2 (.28) 47 Ø 4.2 (.17) x4 deep 8. (3.15) body length M5 (1-24) -1 (.5) deep arker Hannifin Corporation Elyria, Ohio, US