Power Valve: Economy Valve. Standard Specifications. Model VEX55-04

Transcription

1 Three functions (pressure regulator, switching valve, and speed controller) are provided by a single valve. The conventional valve combination circuit has been condensed into a single valve. A large capacity and economical system. This valve provides twice the system capacity of the conventional circuit. Therefore, it is possible to downsize 1 or sizes (for example, a conventional 3A circuit can be changed to a 5A or a A). It is economical, as its performance cost (system price/effective area) is one half of the conventional type. (Comparison based on SMC data.) Basic type Power Valve: Economy Valve Series 5 Standard Specifications Operation type Fluid Pressure range Set pressure range Ambient and fluid temperature Pilot pressure Repeatability Sensitivity Response time Max. operating frequency Number of needle rotations Mounting Lubrication Port 1 (P) (A) 3 (R) mm Effective area Cv Basic type Air operated Select type Basic type Solenoid Select type 1 Pilot Solenoid Valve Specifications Air operated, solenoid Air to 1. MPa.5 to.9 MPa Max. 5 C (Air operated 6 C) :.5 to.9 MPa :. to.9 MPa (Air operated:, P3:. to.9 MPa P3).1 MPa.1 MPa 6 ms or less 3 cycles/sec. 6 turns 8 turns Free Not required (Use turbine oil Class 1 ISO VG3, if lubricated.) Note) Non-lubricated specifications are not available for this product. Weight (kg) Pilot valve Electrical entry Coil rated voltage (V) AC (5/6Hz) DC Allowable voltage Apparent Inrush power AC Holding Power consumption DC Manual override /5711/5911/551/571/591 SF4- - Grommet (G), Grommet terminal (E), Conduit terminal (T), DIN terminal (D) V, V, Other (Option) 4 V, Other (Option) 15 to +1% of rated voltage 5.6 VA (5Hz), 5. VA (6Hz) 3.4 VA (5Hz),.3 VA (6Hz) 1.8 W (Without indicator light), W (With indicator light) Non-locking push type Air operated Select type Basic type Select type Accessory/Part No. Description Bracket (With bolt and washer) Pressure gauge A Part no A G A P3 solenoid valve Note) With this valve, the port is a supply port and port is an exhaust port. 441

2 Series 5 Applicable System/Example of Single Acting Circuit (The valves can be used also for double acting circuits, too. Please consult with SMC for details.) 1. Speed control Conventional circuit Economy system P3 (A) Speed controller Solenoid valve Regulator. Intermediate (emergency) stop Conventional circuit Ascending speed is controlled by a regulator. Descending speed is controlled by needle setting. Economy system (A) P3 3. Double pressure driving Energy-saving lifter (Air saving counter balance) Economy system P3 Conventional circuit (A) TANK TANK 4. Two speed driving Conventional circuit Economy system P3 (A) 44

3 Power Valve: Economy Valve Series 5 Energy-saving Lifter Simple Two economy valves and a tank move the double-acting cylinder to raise and lower heavy objects. Energy-saving The balancing air reciprocates between the lower cylinder chamber and the tank, thus not being consumed. Low pressure air alone is exhausted from the upper chamber in every cycle, so the air consumption is reduced to to 3% of the air consumption by the double acting cylinder with an ordinary change over valve. Excellent operation control The economy valve sets pressure and permits high speed and low speed operation as well as suspension of operation. While the piston moves up and down, the valve controls speed change in the middle of strokes, terminal deceleration, inching, and emergency stops. Simple operation The system is composed of a small regulator and solenoid valve (which is unnecessary for solenoid style), remote controls the economy valve. Therefore, change in the system sequence allows selection of a cylinder operation mode. Change in the large capacity main piping system is not necessary. <System configuration and operation of circuit in which external solenoid is used> (A) Y Ya Y P3 (A) Yb 5 1 Y Upper cylinder chamber Lower cylinder chamber Xa X P3 3 (R) Xb Xc TANK XX 5 11 Y Y X X w For upper chamber setting q For lower chamber setting The two economy valves (hereinafter called ) X and Y and a tank composes a main system that drives the double acting cylinder, and the small regulator (hereinafter called REG) and valve (hereinafter called SOL) remote control the economy valve. Action SOL Cylinder Xa Xb Xc Yb Ya Mode High ON OFF Upward speed a Low speed b High speed c Downward Low speed d Stop e a: The air in the upper cylinder chamber is exhausted from the port 1 (P) of Y, and the air in the tank flows in through the port 1 (P) of X. b: Air flows into the lower cylinder chamber through a throttled opening, set by a needle, from the port (A) to 1 (p) of X. c: The air in the tank flows into the upper cylinder chamber at a preset low pressure from the port (A) of Y, while the air in the lower cylinder chamber returns to the tank through X. d: Air returns to the tank through a throttled opening from the port 1 (P) to (A) of X. e: The air in the lower cylinder chamber is blocked at the port 1 (P) of X, while the air in the upper cylinder chamber is blocked at the port (A) of Y. Caution A lifter circuit can be composed of air operated valves. Please contact SMC for details. 443

4 Series 5 Cylinder Speed Chart System Average velocity (mm/s) Please assume the chart is offered as the guideline. For details about various each condition, please make use of SMC Selection Software and then decide it. Bore size Series CS1/CS Pressure.5 MPa, Load factor 5% Cylinder stroke mm ø15 ø14 ø16 ø18 ø ø5 ø A B C D E F Vertically upward movement Horizontal movement G When the cylinder is extended, the speed controller is metered-out, is connected with the cylinder directly, and its needle is fully open. Values on the average velocity of a cylinder are obtained from the stroke length divided by full stroke time. Load proportion is ((load weight x 9.8)/theoretical force) x % Conditions of Speed Chart System A B C D E F G Solenoid valve Speed controller AS4-4 AS-6 AS6-1 AS6-1 AS8-1 AS9-14 AS9- Silencer AN4-4 AN-6 AN6-1 AN6-1 AN7-1 AN8-14 AN9- Tubing diameter x Length SG5A x 1 m SGA x 1 m SG5A x 1 m SG5A x 1 m SGP3A x 1 m SGP4A x 1 m SGP5A x 1 m 444

5 Power Valve: Economy Valve Series 5 5 Economy valve E Z B Type Basic 1 Select Operation type Air operated 1 solenoid Economy valve How to Order Option Nil None B Bracket G Pressure gauge How to order valves SF4 Light/Surge voltage suppressor Electrical entry Rated voltage Light/Surge voltage suppressor (Only with solenoid) (Ex.) SF4-1G- Nil None S With surge voltage suppressor VAC, Grommet (Grommet only) With light/surge voltage suppressor Z (Except grommet) Electrical entry (Only with solenoid) G Grommet, Lead wire length mm H Grommet, Lead wire length 6 mm E Grommet terminal T Conduit terminal D DIN terminal Body size Body size port, (A) port Rated voltage (Only with solenoid) VAC 5/6 Hz VAC 5/6 Hz VAC 5/6 Hz VAC 5/6 Hz VDC VDC 7 4 VAC 5/6 Hz 9 Other Option Thread type Nil Rc F G (1) N NPT T NPTF Note 1) Not conforming to ISO (Ex.) EZ-BG Body size 5, Select, solenoid 3/4 VAC, Grommet terminal, with light/surge voltage suppressor Option Bracket, with pressure gauge Basic type Select type Air operated solenoid Air operated solenoid Port 1 (P), (A) Port 3 (R) , 3 4, 1 1, 3 4, , , 445

6 Series 5 Flow Characteristics ( +.113) = (1 to 1.89)( +.113) Subsonic flow Port 1 (P).9MPa Port (A) pressure (MPa) Port 3 (R)1MPa Sonic flow ( +.113) 1.89 ( +.113) Needle fully open Port 1 (P) (A) Flow rate (L/min (ANR)) Reduced pressure supply Port 3 (R) (A) Pressure Characteristics Needle Characteristics Port (A) 1 (P) Shows the outlet pressure (port 3 (R)) change against the inlet pressure (port (A)) change. They conform to JIS B 837 (Air pressure regulator). 55 Port (A) pressure (MPa) 57 Port (A) pressure (MPa) Port 3 (R) pressure (MPa) Set point Set point Port (A) 1 (P) Flow rate (L/min(ANR)) (Inlet pressure:.5 MPa) Needle rotation ( Counterclockwise) Setting Pressure Characteristics Port (A) pressure is set according to pressure. (port 3 (R) (A): Non-relief regulator) Effective area (mm ) 59 Port (A) pressure (MPa) Port 3 (R) pressure (MPa) Set point Port (A) pressure (MPa) Port 3 (R) pressure (MPa) Pilot pressure (port ) MPa 446

7 Power Valve: Economy Valve Series 5 Basic Type/Dimensions 5/551 57/571 Bracket (Option) Pressure gauge (Option) Silencer (P3) Conduit terminal (T) 1/4 () Refer to page 449. Refer to page 449. Grommet terminal (E) Port 3 (R) Grommet Air (operated) DIN terminal (D) Applicable O.D. ø6 to ø8 1/4 () Refer to page 449. x port size Port (A),1 (P) x ød Mounting hole For bracket mounting Min. Max Port (A),1 (P) Port 3 (R) A B C D E F J 1, 3 4, 1 1, 3 4, Center 6 x M6 Thread depth , G H I K L M N O P Q R S 18 8 x M6 Thread depth T U Bracket mounting dimensions a b c d e f Grommet g Grommet terminal h Conduit terminal i DIN terminal j 5 59/591 Bracket (Option) Grommet terminal (E) Conduit terminal (T) Silencer (P3) Refer to page 449. Pressure gauge (Option) DIN terminal (D) Applicable O.D. ø6 to ø8 1/4 () 1/4 () Refer to page 449 Refer to page 449. Port 1 (Air operated) x 1 1, Port (A), 1 (P) (Mounting hole) 4 x M6 Thread depth 1 For bracket mounting Max..5 Min

8 Series 5 Select Type/Dimensions 551/ /5711 Pressure gauge (Option) Bracket (Option) Silencer (P3) Refer to page 449. Port 3 (R) Conduit terminal (T) Grommet terminal (E) Grommet (G) 1/4 () Refer to page 449. DIN terminal (D) Applicable O.D. ø6 to ø8 1/4 () Refer to page 449. x port size Port (A),1 (P) x ød Mounting hole A (Air operated) For bracket mounting Max..5 Min. 14 Max. O Min. N Port (A),1 (P) Port 3 (R) A B C D E F J 1, 3 4, 1 1, 3 4, Center 6 x M6 Thread depth , G H I K L M N O P Q R S T U 8 4 x M6 Thread depth Bracket mounting dimensions a b c d e f Grommet g 4 1 Grommet terminal h Conduit terminal i 39.5 DIN terminal j /5911 Bracket (Option) Silencer (P3) Refer to page 449. Conduit terminal (T) 43 (Air operated) Port 3 (R) Pressure gauge (Option) Grommet terminal (E) Grommet (G) DIN terminal (D) Applicable O.D. ø6 to ø8 1/4 () 1/4 () Refer to page 449. Refer to page 449. x 1 1, Port (A), 1 (P) 4 x M6 Thread depth 1 For bracket mounting 4 x ø7 Mounting hole 448

9 Power Valve: Economy Valve Series 5 Pilot Piping Caution Refer to front matter 53 for Safety Instructions and pages 3 to 8 for 3/4/5 Port Solenoid Valve Precautions. Port 3 (R) side Port 1 (P) side P3 5 Plug Pilot Note) exhaust Pilot Note) exhaust Note) For exhaust port, silencer AN1- is mounted. How to Use DIN Terminal 1. Disassembly 1) After loosening the screw q, then if the housing w is pulled in the direction of the screw q, the connector will be removed from the body of equipment (solenoid, etc.). ) Pull the screw q out of the housing w. 3) On the bottom part of the terminal block e, there s a cut-off part o. If a small flat head screwdriver is inserted between the opening in the bottom, terminal block e will be removed from the housing w. (Refer to the figure-1.) 4) Remove the cable gland r, plain washer t and rubber seal y.. Wiring 1) Pass the cable u through the cable gland r, plain washer t and rubber seal y in this order, and then insert them into the housing w. ) Loosen the screw!1 attached to the terminal block e. Then, pass the lead wire! through the terminal block e and tighten the screw!1 again. Note 1) Tighten within the tightening torque of.5 N m ±15%. Note ) Cable u outside diameter: ø6 to ø8 mm 3. Assembly 1) Pass the cable u through the cable gland r, plain washer t and rubber seal y in this order and connect to the terminal block e. Then, mount the terminal block e on the housing w. (Push it down until you hear the click sound.) ) Put the rubber seal y and plain washer t in this order into the cable entry of the housing w, and then tighten the cable gland r securely. 3) Insert the gasket i between the bottom part of terminal block e and the plug attached to the equipment. Then, screw in q from the top of the housing w to tighten it. Note ) Tighten within the tightening torque of.5 N m ±%. Changing the entry direction The orientation of a connector can be changed 18, depending on the combination of a housing w and a terminal block e Fig.-1 Related Products: Silencer (Series AN) Over 3 db noise reduction Sufficient effective area Refer to Best Pneumatics No. 6 for details. Exhaust Cleaner (Series AMC) Provides a silencing capability and an oil mist recovery function. Can also be used in a centralized piping system. Refer to Best Pneumatics No. 6 for details. 449 A

10 Series 5 Basic Type/Construction/Working Principle/Component Parts 1. 3 (R) (A) Reduced pressure supply Note) With this valve, the port 3 (R) is a supply port and port 1 (P) is an exhaust port.. Closed center 3. (A) 1 (P) Throttled exhaust When the solenoid valve a is energized (or when pressure is applied to the port of the air operated type) while the port is under the pressure, reduced pressure is supplied from the port 3 (R) to the port (A). The acting force of the pressure (port ) reaches the space under the pressure control piston e pushes the piston upward and opens the poppet valve y. Thus air is supplied from the port 3 (R) to the port (A). The air entering through the port (A) flows through the feedback passage to the space above the piston, and when its pressure balances with the pressure under the pressure control piston, the poppet valve closes, thus setting the port (A) pressure corresponding to the pressure (port ). (port pressure: port (A) pressure = 1:1) When the reduced pressure is supplied from 3 (R) to (A), air will not be exhausted from (A) to 1 (P) even when the pressure (port ) is larger than the port (A) pressure. When neither the solenoid valves a or b is energized (or when no pressure is applied to the ports and of the air operated type), no acting force is applied to the pressure control piston e and operation piston o, and the spring r closes both poppet valves y, thus the valves assume the closed center position. While the port (A) is being pressurized, air will not be released even if electrical power to the solenoid valve a is turned off (or pressure is released from the port of the air operated type). When the solenoid valve b is energized while pressure is in the port (or when the pressure is applied to the port of the air operated type), an acting force generated above the operation piston o pushes the operation piston down, and thus the port 1 (P) and port (A) are connected. At that time, the lower poppet valve y opens by the degree preset by the needle!1. (Counterclockwise rotation of the needle opens the poppet valve.) The upper and lower poppet valves operate independently. When the solenoid valves a and b are energized alternately (or when pressure is applied to the ports and of the air operated style alternately), the supplied reduced pressure (3 (R) (A)) can be throttled and exhausted ( (A) 1 (P)). Construction Pilot valve Pilot valve Port P3 Manual button Port Port Feed back flow passage Port 3 (R) Port (A) (Basic type: solenoid) Port 1 (P) Component Parts No. Description Material 1 3 Body Cover Pressure control piston Aluminum alloy casted Aluminum alloy casted Aluminum alloy 4 Spring Stainless steel 5 Chamber Aluminum alloy 6 Poppet valve NBR 7 Rod Stainless steel 8 Valve guide Aluminum alloy 9 Operation piston Aluminum alloy 1 Bottom cover Aluminum alloy 11 Needle Brass 45

11 Power Valve: Economy Valve Series 5 Select Type/Construction/Working Principle/Component Parts 1. 3 (R) (A) Reduced pressure supply. Closed center 3. (A) 1 (P) Fully open exhaust Note) With this valve, the port 3 (R) is a supply port and port 1 (P) is an exhaust port. 4. (A) 1 (P) Throttled exhaust When the solenoid valve a is energized (or when pressure is applied to the port of the air operated type) while the port is under the pressure, reduced pressure is supplied from the port 3 (R) to the port (A). The acting force of the pressure (port ) reaches the space under the pressure control piston e pushes the piston upward and opens the poppet valve y. Thus air is supplied from the port 3 (R) to the port (A). The air entering through the port (A) flows through the feedback passage to the space above the piston and when its pressure balances with the pressure under the pressure control piston, the poppet valve closes, thus setting the port (A) pressure corresponding to the pressure (port ). (port pressure: port (A) pressure = 1:1) When the reduced pressure is supplied from 3 (R) to (A), air will not be exhausted from (A) to 1 (P) even when the pressure (port ) is larger than the port (A) pressure. When neither the solenoid valve a nor b is energized (or when no pressure is applied to the ports and of the air operated type), no acting force is applied to the pressure control piston e and operation piston o, and the spring r closes both poppet valves y, thus the valve assumes the closed center position. While the port (A) is being pressurized, air will not be released even if electrical power to the solenoid valve a is turned off (or pressure is released from the port of the air operated type). When the solenoid valve b is energized while pressure is in the port (or when the pressure is applied to the port of the air operated type), an acting force generated above the operation piston o, and pushes down the operation piston, and thus the ports 1 (P) and (A) are connected. At that time, the lower poppet valve y fully opens. When the solenoid valves b and c are energized simultaneously while pressure is in the port (or when the pressure is applied simultaneously to the ports and P3 of the air operated type), an acting force generated above the operation piston o pushes the piston down and another acting force generated under the stopper!1 pushes up the stopper, and thus the ports 1 (P) and (A) are connected. At that time, the lower poppet valve y opens by the degree preset by the needle!. (Counterclockwise rotation of the needle opens the poppet valve.) The upper and lower poppet valves operate independently. When the solenoid valves a and b are energized alternately (or when pressure is applied alternately to the ports and of the air operated type), the supplied reduced pressure (3 (R) (A)) can be throttled and exhausted ( (A) 1 (P)). The solenoid valve c remains energized (or pressure remains applied to the port P3 of the air operated type). By turning on/off the solenoid valve c (or by supplying/exhausting pressure to/from the port P3 of the air operated type) while electric power is being supplied to the solenoid valve b (or pressure is being applied to the port of the air operated type), either throttling or fully open exhaust can be selected (decelaration/ accelaration) for the port (A) 1 (P). Construction Pilot valve Port P3 Manual button Port Port Feed back flow passage Port (A) Port 3 (R) Port 1 (P) (Select type: solenoid) Component Parts No. Description Material 1 Body Aluminum alloy casted 3 Cover Pressure control piston Aluminum alloy casted Aluminum alloy 4 Spring Stainless steel 5 Chamber Aluminum alloy 6 Poppet valve NBR 7 Rod Stainless steel 8 Valve guide Aluminum alloy 9 Operation piston Aluminum alloy 1 Bottom cover Aluminum alloy 11 Stopper Aluminum alloy 1 Needle Brass 451