Compact Proportional Solenoid Valve

Compact Proportional Solenoid Valve Series PVQ ARJ Repeatability: 3% or less AR425 to 935 Hysteresis:10% or less Fluid Air, Inert gas Flow rate c...
Author: Dennis Powell
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Compact Proportional Solenoid Valve Series

PVQ ARJ

Repeatability: 3% or less

AR425 to 935

Hysteresis:10% or less Fluid Air, Inert gas

Flow rate control range Note)

ARX AMR

Series

ARM

PVQ10 PVQ30

0 to 6 L/min 0 to 100 L/min

ARP

Note) Varies depending on the model.

IR IRV VEX

Control the flow rate smoothly according to the current

VCHR g

ITV

C de urre cr nt ea sin

Flow rate curve with decreasing current

IC

inc Cu re rre as n ing t

Flow rate (L/min)

SRP SRF

Flow Characteristics

Max. flow rate

SRH

ITVX PVQ

Hysteresis

VEF VEP

Repeatability

VER

Flow rate curve with increasing current

VEA VY1

Start-up current

Control signal (mA)

Rated current

VBA VBAT

AP100

873

 Service life: Lasts 25 million cycles. (PVQ30) (SMC in-house life test conditions)

Specially coated sliding surface realized 25 million cycles within set operating range

O-ring O-ring

 Body material: Equivalent to C37 or Stainless Steel 304 (PVQ30) Seal material: FKM (PVQ10, PVQ30)  Valve returns to closed position when power supply is turned off.

 Leakage amount: 5 cm3/min or less at OFF  Can be used with vacuum. (Minimum operating pressure 0.1 Pa·abs)  Operation noise during opening/ closing of the valve reduced

PVQ10

ON

30 dB or less

OFF 32 dB or less

∗ Background noise: 20 to 25 dB

PVQ30

ON

43 dB or less

OFF

50 dB or less

∗ Background noise: 20 to 25 dB

 Can be mounted on manifolds

When continuously energizing adjacent valves at the same time, ambient temperature rises since the coil generates heat. Implement measures to exhaust excess heat so that the temperature remains within the range of the table on the right. Coil

Table: Coil outer surface temperature range Model Coil outer surface temperature PVQ10 90°C or less PVQ30 100°C or less ∗ Ambient temperature: 50°C at the valve proximal section (approx. 1 mm) when the maximum current is applied

Working Principle

Core

The armature is attracted to the core by electromagnetic force as the coil is energized. When the applied current varies, the attraction force also varies proportionally to it. The flow rate is controlled by the movement (stroke) of the armature, depending on the balance between this attraction force and the spring load.

Spring

Armature

Stroke

Note) Sliding resistance at this point is the hysteresis of the flow.

P (1)

A (2) P (1)

A (2)

PVQ30

PVQ10

Proportional Solenoid Valve

Conventional (2 port valve)

Flow rate can be controlled smoothly with one proportional solenoid valve by current control. Controller

mA

Smaller

Proportional solenoid valve

874

P (1) A (2)

Greater

One 2-port valve is required for each flow rate. 2 port valve

Applications Air-blow • Blow-off of debris or water. Work transportation

Spin control of handpiece

ARJ AR425 to 935

ARX AMR

Blood pressure gauge

ARM ARP IR IRV

Vacuum chamber supply flow control

VEX

Smooth air supply/exhaust is possible by reducing the initial air supply. Prevents dust being stirred up inside the chamber.

SRH SRP

Supply

SRF

Exhaust

P

VCHR

Vacuum pump

ITV IC Model Piping type

ITVX

PVQ13

PVQ31

PVQ33

Base mounted

Body ported

Base mounted

PVQ VEF VEP

VER VEA VY1 Bracket (Option)

VBA VBAT

AP100 Direct operated poppet

Valve construction

Direct operated poppet

N.C.

Orifice size (mm)

0.3

0.4

0.6

0.8

1.6

N.C. 2.3

4

Max. operating pressure (MPa)

0.7

0.45

0.2

0.1

0.7

0.35

0.12

Valve type

Flow rate (L/min) Applied current (Power supply) Port size

0 to 5

0 to 6

0 to 5

0 to 75

0 to 100

0 to 85 mA (24 VDC) 0 to 170 mA (12 VDC)

0 to 165 mA (24 VDC) 0 to 330 mA (12 VDC)

M5

1/8

875

Series PVQ

Model Selection ∆P = (P1 – P2) MPa ∆P : Pressure differential P1 : Inlet pressure P2 : Outlet pressure

Condition 1. P1 = 0.7 Mpa, P2 = 0 MPa (Atmospheric pressure) Refer to curve A when ∆P is 0.7 MPa.

Ex) At increasing current, the flow rate when 140 mA current is applied is 85 L/min. (See q.) If current decreases at this point, the flow rate may not change by 135 mA due to hysteresis. (See w.) The flow rate at increasing current and decreasing current are not the same due to hysteresis. (q 85 L/min., e 93 L/min.) Condition 2. P1 = 0.7 MPa, P2 = 0.2 MPa Refer to curve B when ∆P is 0.5 MPa. Ex) At increasing current, the flow rate when 150 mA current is applied is 65 L/min. (See r.) If the outlet pressure P2 increases by 0.15 MPa, ∆P decreases by 0.15 MPa and becomes 0.35 MPa (See curve C), and the flow rate when the same current is applied is 40 L/min. (See t.) • The flow rate decreases due to change (increase) in outlet pressure, even if the inlet pressure and current value are the same. Condition 3. In a vacuum • For vacuum specifications, the operating pressure range is from 0.1 Pa·abs to max. operating pressure differential. • A(2) port is applicable with vacuum pressure.

PVQ30 (ø1.6) 120

Current decreasing

Flow rate (L/min)

100 Current increasing

80 Curve A ∆P = 0.7 MPa

60

Curve C ∆P = 0.35 MPa

Curve B ∆P = 0.5 MPa

40

Curve D ∆P = 0.2 MPa

20 0 24 VDC → 0

20

40

60

80

100

120

140

160

180

200

12 VDC → 0

40

80

120

160

200

240

280

320

360

400

Current (mA)

876

Model Selection

Series

PVQ

 Q. Required flow rate = 0 to 75 L/min. P1 = No conditions, P2 = 0 MPa (Atmospheric pressure) In this case, all orifice sizes of PVQ30 series satisfy the required flow rate. (Flow rate when rated current is applied) The table below shows the pressure differentials to satisfy the required flow rate. In the flow rate characteristic charts, a pressure differential over the flow rate indicated by the dashed line (75 L/min.) up to the max. operating ARJ pressure differential will satisfy the required flow rate. AR425 Table. Pressure differential to satisfy required flow rate = 0 to 75 L/min. Pressure differential (∆P)

ø1.6

ø2.3

ø4.0

0.5 to 0.7 MPa

0.25 to 0.35 MPa

0.12 MPa

PVQ30 (ø1.6)

to 935

ARX

∆P = (P1 – P2) MPa ∆P : Pressure differential P1 : Inlet pressure P2 : Outlet pressure

AMR ARM

120

∆P = 0.7 MPa

Flow rate (L/min)

100

ARP

∆P = 0.5 MPa

80

IR

∆P = 0.35 MPa

60

IRV

∆P = 0.2 MPa

40

VEX

20 0 24 VDC → 0 12 VDC → 0

20 40

40 80

60 120

80 160

100 200

120 240

140 280

160 320

180 360

SRH

200 400

SRP

Current (mA)

SRF

PVQ30 (ø2.3) 120

Flow rate (L/min)

VCHR

∆P = 0.35 MPa

100

∆P = 0.25 MPa

ITV

80

∆P = 0.18 MPa

60

IC

∆P = 0.1 MPa

40

ITVX

20 0 24 VDC → 0 12 VDC → 0

PVQ 20 40

40 80

60 120

80 160

100 200

120 240

140 280

160 320

180 360

200 400

VEF VEP

Current (mA)

VER

PVQ30 (ø4.0)

VEA

Flow rate (L/min)

120 100

∆P = 0.12 MPa

80

∆P = 0.08 MPa

VY1 VBA VBAT

∆P = 0.06 MPa

60 40

AP100

∆P = 0.04 MPa

20 0 24 VDC → 0 12 VDC → 0

20 40

40 80

60 120

80 160

100 200

120 240

140 280

160 320

180 360

200 400

Current (mA)

 Note 1) Follow the same procedure for selecting PVQ10 series. 2) Flow rate depends on individual differences between valves and piping conditions. Refer to flow characteristic chart to select the model with adequate margin for required flow rate.

877

Compact Proportional Solenoid Valve

Series PVQ10 How to Order

PVQ 13 5 L

Base mounted

03 M5 A Body/Seal material

Valve type

Symbol Body C36 A

13 N.C.

Seal FKM

Voltage 5 6

24 VDC

Port size

12 VDC

Electrical entry

L

M

Nil

Without sub-plate (with mounting screw M1.7 x 17L, 2 pcs.)

M5

With sub-plate M5 x 0.8

Mounting screw

L plug connector

Sub-plate

M plug connector

Orifice size

With/Without lead wire Nil

With lead wire

O

Without lead wire

Symbol

Orifice dia.

Max. operating pressure

03 04 06 08

0.3 mmø

0.7 MPa

0.4 mmø

0.45 MPa

0.6 mmø

0.2 MPa

0.8 mmø

0.1 MPa

Coil specifications

Valve construction

Direct operated poppet

Fluid

Air, Inert gas

Seal material

FKM

Body material

C36

Fluid temperature

0 to +50°C

Ambient temperature Note 1)

0 to +50°C

Action

0.3

0.4

0.6

0.8

Max. operating pressure differential (MPa) Note 2)

0.7

0.45

0.2

0.1

1 MPa

Max. operating pressure (MPa) Min. operating pressure (MPa) (Vacuum)

Note 3)

Flow rate (L/min) (at max. operating pressure differential) 0 to 5 Hysteresis (at max. operating pressure differential)

0 (0.1 Pa.abs) 0 to 6

0 to 5

10% or less

Repeatability (at max. operating pressure differential)

3% or less

Unrestricted

Start-up current (at max. operating pressure differential)

50% or less

Port size Coil current

Orifice diameter (mmø)

N.C. (Normally closed)

Mounting orientation Power supply

Characteristic specifications

Standard specifications

Specifications

M5 24 VDC

12 VDC

0 to 85 mA

0 to 170 mA

Power consumption

0 to 2 W

Coil insulation

Class B

Note 1) Ambient temperature is for the valve proximal section (approx. 1 mm). When the valve is continuously energized at an ambient temperature of 50°C (when applying maximum current), the coil outer surface reaches 90°C. The temperature changes depending on the operating conditions, and the coil outer surface temperature must be kept at 90°C or lower. Note 2) Maximum operating pressure differential indicates pressure differential (difference between inlet and outlet pressure) which can be allowed for operation with the valve closed or open. If the pressure differential exceeds the max. operating pressure differential of orifice, the valve may leak. Note 3) For vacuum application, max. operating pressure range is 0.1 Pa·abs to max. operating pressure differential. A(2) port is applicable for vacuum pressure.

878

Series

Compact Proportional Solenoid Valve

PVQ10

Flow Characteristics PVQ10 (ø0.3)

PVQ10 (ø0.4)

7

7

∆P = 0.7 MPa ∆P = 0.5 MPa

5 4

∆P = 0.35 MPa

3

∆P = 0.2 MPa

2 1

0 24 VDC → 0 12 VDC → 0

∆P = 0.45 MPa

6

Flow rate (L/min)

Flow rate (L/min)

6

∆P = 0.35 MPa

5

3

∆P = 0.15 MPa

ARX

1

10 20

20 40

30 60

40 80

50 100

60 120

70 140

80 160

90 180

100 200

AMR

0 24 VDC → 0 12 VDC → 0

10 20

20 40

30 60

40 80

50 100

60 120

70 140

80 160

90 180

100 200

Current (mA)

PVQ10 (ø0.6)

IR

7

∆P = 0.2 MPa

6

Flow rate (L/min)

∆P = 0.1 MPa

4

∆P = 0.05 MPa

3

∆P = 0.1 MPa

6

∆P = 0.15 MPa

5

2 1

IRV

∆P = 0.08 MPa

5

VEX

∆P = 0.05 MPa

4

∆P = 0.02 MPa

3

SRH

2

SRP

1

10 20

20 40

30 60

40 80

50 100

60 120

70 140

80 160

90 180

100 200

ARM ARP

PVQ10 (ø0.8)

7

Flow rate (L/min)

AR425 to 935

2

Current (mA)

0 24 VDC → 0 12 VDC → 0

ARJ

∆P = 0.25 MPa

4

0 24 VDC → 0 12 VDC → 0

10 20

20 40

30 60

Current (mA)

40 80

50 100

60 120

70 140

80 160

90 180

100 200

Current (mA)

Note) Flow rate varies depending on model differences and piping conditions. Select the model that fully satisfies the necessary flow rate based on the flow characteristics graphs.

SRF VCHR ITV IC

Construction

ITVX Component Parts

PVQ

No.

Description

Material

1

Solenoid coil assembly



2

Core

3

Return spring

4

Armature assembly

5

Body

C36

6

O-ring

FKM

7

Round head combination screw

Steel

M1.7 x 0.35 x 17L, 2 pcs.

8

Sub-plate

C36

Part no: PVQ10-15-M5

Note

VEF VEP

Stainless steel Stainless steel

VER

Stainless steel, Aluminum, FKM

VEA VY1 VBA VBAT

AP100 P (1) A (2)

A (2)

P (1) (Shows with sub-plate)

879

Series

PVQ10

Dimensions L plug connector

PVQ13-L--M5 Round head combination screw 35

2 x ø2.7

15

16

10

13.7

3.1

2 x ø2.7 Mounting hole

4

23

4.8

2 (OUT port) ø1.4

6.8

≈300

1 (IN port) ø1.4

6

25.6

2.7

2.3

OUT O-ring

Interface

11

14

IN O-ring

M5 x 0.8 1 (IN port)

M5 x 0.8 2 (OUT port) Sub-plate

M plug connector

PVQ13-M--M5 Round head combination screw 44.3

15

2 x ø2.7

16

13.7

10

A C B

3.1

2 x ø2.7 Mounting hole

4

23

2 (OUT port) ø1.4

41.2

6.8

≈300

4.8

1 (IN port) ø1.4

36.1

M5 x 0.8 1 (IN port)

24.6 11

6

14

IN O-ring

M5 x 0.8 2 (OUT port) Sub-plate

880

2.7

2.3

Interface

OUT O-ring

Compact Proportional Solenoid Valve

Series PVQ30

ARJ AR425 to 935

How to Order

ARX

Option Port size

Valve type

01

31 N.C.

Body ported Base mounted

1/8 (6A)

Nil

None

F

Foot bracket

∗ Bracket is not mounted but is provided at the time of shipment.

PVQ 31 5 G 16 01 PVQ 33

5 G 16 01

IR

Voltage

Body

Orifice size Symbol Orifice dia. 1.6 mmø 16

Seal

Nil

C37

H

Stainless steel

VEX

FKM

SRH

Thread type (with sub-plate)

12 VDC

Electrical entry: Grommet

23 40

IRV

Body/(Sub-plate) Seal material Symbol

33 N.C.

24 VDC

0.7 MPa

2.3 mmø

0.35 MPa

4 mmø

0.12 MPa

Nil

Rc

F N T

G

SRP SRF

NPT NPTF

VCHR

Port size

Max. operating pressure

Nil

ARM ARP

Valve type

5 6

AMR

Without sub-plate (with mounting screw M3 x 8L, 2 pcs.)

ITV

Mounting screw

IC ITVX

01

With sub-plate 1/8 (6A)

PVQ

Sub-plate

VEF VEP

Specifications

Fluid

Direct operated poppet Air, Inert gas

Seal material

FKM

Body material

C37 (Standard), Stainless steel

Fluid temperature

0 to +50°C

Ambient temperature Note 1)

0 to +50°C

Action Mounting orientation

N.C. (Normally closed) Unrestricted

Enclosure

IP40

Coil specifications

Port size Power supply Coil current

Rc 1/8 24 VDC

12 VDC

0 to 165 mA

0 to 330 mA

Power consumption

0 to 4 W

Coil insulation

Class B

Characteristic specifications

Standard specifications

Valve construction

VER Orifice diameter (mmø)

1.6

2.3

4.0

Max. operating pressure differential (MPa) Note 2)

0.7

0.35

0.12

Max. operating pressure (MPa)

1 MPa

Min. operating pressure (MPa) (Vacuum) Note 3)

0 (0.1 Pa.abs)

Flow rate (L/min) (at max. operating pressure differential) Hysteresis (at max. operating pressure differential) Repeatability (at max. operating pressure differential) Start-up current (at max. operating pressure differential)

VY1 VBA VBAT

0 to 100

0 to 75

10% or less

13% or less

3% or less 50% or less

VEA

65% or less

Note 1) Ambient temperature is for the valve proximal section (approx. 1 mm). When the valve is continuously energized at an ambient temperature of 50°C (when applying maximum current), the coil outer surface reaches 100°C. The temperature changes depending on the operating conditions, and the coil outer surface temperature must be kept at 100°C or lower. Note 2) Maximum operating pressure differential indicates pressure differential (difference between inlet and outlet pressure) which can be allowed for operation with the valve closed or open. If the pressure differential exceeds the max. operating pressure differential of orifice, the valve may leak. Note 3) For vacuum application, max. operating pressure range is 0.1 Pa·abs to max. operating pressure differential. A(2) port is applicable for vacuum pressure.

881

AP100

Series

PVQ30

Flow Characteristics Air

PVQ30 (ø1.6)

PVQ30 (ø2.3)

120

120

∆P = 0.7 MPa

80

∆P = 0.35 MPa

60

∆P = 0.2 MPa

40 20

0 24 VDC → 0 12 VDC → 0

∆P = 0.35 MPa

100

∆P = 0.5 MPa

Flow rate (L/min)

Flow rate (L/min)

100

∆P = 0.25 MPa

80

∆P = 0.18 MPa

60

∆P = 0.1 MPa

40 20

20 40

40 80

60 120

80 160

100 200

120 240

140 280

160 320

180 360

200 400

0 24 VDC → 0 12 VDC → 0

20 40

40 80

60 120

80 160

Current (mA)

100 200

120 240

140 280

160 320

180 360

200 400

Current (mA)

PVQ30 (ø4.0) 120

Flow rate (L/min)

100

∆P = 0.12 MPa ∆P = 0.08 MPa

80

∆P = 0.06 MPa

60 40

∆P = 0.04 MPa

20 0 24 VDC → 0 12 VDC → 0

20 40

40 80

60 120

80 160

100 200

120 240

140 280

160 320

180 360

200 400

Current (mA) Note) Flow rate varies depending on model differences and piping conditions. Select the model that fully satisfies the necessary flow rate based on the flow characteristics graphs.

Construction Component Parts No.

Description

Material

1

Solenoid coil assembly



2

Coil cover

3

Magnetic plate

4

Adjusting screw

Stainless steel

5

Tube assembly

Stainless steel

6

Return spring

7

Armature assembly

Stainless steel, PPS, PTFE, FKM

8

Body

C37 or Stainless steel

9

Nut

10

Wave washer Round head combination screw

11 12

Sub-plate

13

O-ring

14

O-ring

SPCE SUY

Stainless steel

Steel Stainless steel M3 x 0.5 x 8L, Copper 2 pcs. Base Part no.: C36 or Stainless steel mounted PVQ30-15-01 only FKM FKM

Option (Body ported only) • Bracket assembly: VDW20-15A-1 Sub-plate Part No. P (1)

A (2)

PVQ30-15

-01 Material

882

Note

C S

Thread type C36

Stainless steel

Compact Proportional Solenoid Valve

Series

PVQ30

Dimensions PVQ31

27 2 x ø3.5

20

27

20

ARJ AR425 to 935

ARX ≈300

11

AMR

ø20.5

ARM ARP ≈61

IR

29.5

IRV

5

8

VEX

Rc 1/8 1 (IN port)

SRH

Rc 1/8 2 (OUT port)

25

15

SRP

Bracket assembly

20.5

SRF 15

VCHR ITV

2 x M3 x 0.5 x 5

IC PVQ33 2 x ø3.4 Base mounting hole

ITVX

22

2 x ø3.4 Mounting hole

30

16

PVQ

1 (IN port) ø4

OUT O-ring

IN O-ring

Round head combination screw 3

≈300

VEF VEP

8.7

2 (OUT port) ø13.6

23

20

3

15.5

27

VBA VBAT

ø20.5 ø3.8 15.5±0.1

AP100

6

3

18

1.8

≈49

1.8

2 x ø2.8

22±0.1

17

17

2 x M3 x 0.5

Machining dimension of base side Rc 1/8 2 (OUT port)

28 30

Rc 1/8 1 (IN port) Sub-plate

VEA VY1

Interface

11

VER

21.5 23

883

Series

PVQ

Glossary  Proportional control Control the fluid proportionally according to input signal (current).

 Max. operating pressure differential Indicates max. pressure differential (difference between inlet and outlet pressure) which is allowed for operation with the valve closed or open.

 Max. operating pressure This indicates the limit of pressure that can be applied to the inlet. (The pressure differential of the proportional valve must be no more than the maximum operating pressure differential.)

 Orifice diameter Diameter of the hole for sealing the valve body of the proportional valve. This does not indicate the effective cross section.

 Hysteresis Greatest flow rate difference between current increase and current decrease (with the same current). (Percentage divided by max. flow rate)

 Repeatability Deviation of output flow rate when the same current is applied. (Percentage divided by max. flow rate)

 Start-up current Current at which the flow rate is actually output while increasing current from zero. (Percentage divided by rated current)

884

Series PVQ

Specific Product Precautions Be sure to read before handling. Refer to front matter 43 for Safety Precautions.

Power Source Selection

Caution

Operation in Vacuum

Caution

ARJ

This product makes proportional control possible with constant current.

When the product is used in vacuum, apply vacuum pressure to A (2) port.

If controlled with voltage, the output flow rate cannot be kept constant due to current fluctuation. Use stable DC power source of sufficient capacity without much ripple.

The pressure at P(1) port should be larger than the pressure at A(2) port.

Handling

Caution 1. This product is adjusted to the respective specifications at SMC factory before delivery. Do not disassemble the product or remove parts as it could cause breakdown of the product.

2. Flow rate is controlled by balancing the valve body. Do not expose the product to external vibration and impact as it changes the flow rate. Vibration may occur depending on the piping conditions or control methods.

Pressure Difference

Caution Leakage from the valve may be caused if the pressure difference is larger than the maximum operating pressure differential of the respective models.

AR425 to 935

ARX AMR

Valve Mounting

ARM

Caution

ARP

When mounting a valve to the sub-plate, tighten the screw securely with the tightening tor- IR que shown in the table below after checking the installation condition of the O-ring on the IRV interface side.

VEX

Proper Tightening Torque (N m) PVQ10 (Base mounted)

PVQ30 (Base mounted)

0.15 to 0.22

0.8 to 1.0

SRH SRP SRF

Continuous Energization

VCHR

Warning

Do not touch the valve directly with hands. ITV The coil can be hot depending on the ambient IC temperature or energizing time. Install a protective cover over the valve if it can be touched directly with hands.

ITVX PVQ VEF VEP

Flow Rate

VER

Caution

VEA

Flow rate varies depending on model differences and piping conditions. Select the model that fully satisfies the necessary flow rate based on the flow characteristics graphs.

VY1 VBA VBAT

AP100

885