Proportional spool valves
Wanduh AG Tel. +41 33 672 72 72 E-mail: sales@wanduh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wanduh.com Data subject to change 1.10-11E 1/4
CH-3714 Frutigen Edition 11 02
FUNCTION
Spool stroke, aperture and volume ow in-
crease proportionally to the increase in the
electric current at the proportional solenoid.
This special design senses and compensales
load induced ow changes. Flow remains
constant with var ying pressure. The optimised
shape of the spool results in a good resolution
of owimportant for sensitive motion control.
To control the valve Wanduh proportional
ampliers are available (see register 1.13).
APPLICATION
Because of the high resolution and low hy-
steresis, these valves are particularly suitable
for demanding tasks. Applications:
handling operations, robots, actuators, radar
controlled vehicles, tool making and paper
production machines, in other words any-
where where precise control systems are
needed.
DISCRIPTION
Directly controlled spool valve, actuated
by a Wanduh proportional solenoid (VDE
standard 0580), in ve chamber design. Wet
solenoid in oil. Spools with precision machined
oil passages control the oil volume wich is
proportional to the solenoid current. Reduced
pressure drop achieved by optimised ow
channels. Precise spool t, long life. Spool
made of hardened steel, valve body made
of high quality cast iron suitable for hydraulic
valves. Flange type, threaded connection by
means of a connecting plate.
GENERAL SPECIFICATIONS
Nominal size NG6 acc. to ISO 4401-03
Designation 4/2-, 4/3-way proportional control valve
Construction Direct operated spool valve
Mounting Flange, 4 holes for socket cap
screws M5 x 45
Fastening torque M
D
= 5,5 Nm (screw quality 8.8)
Pipe connection Connection plates,
Multi-station ange subplate,
Longitudial stacking system
Mounting position any
Ambient temperature -20…+50 °C
Weight: 4/2-way m = 1,85 kg
4/3-way m = 2,85 kg
Proportional directional valve
• pressurecompensated
• Q
max
=20l/min
• p
max
= 250 bar
HyDRAULIC SPECIFICATIONS
Fluid Mineral oil, other uid on request
Contamination ISO 4406:1999, class 18/16/13
efciency (Required ltration grade ß6…10≥75)
refer to data sheet 1.0-50/2
Viscosity range 12 mm
2
/s…320 mm
2
/s
Fluid temperature -20…+70 °C
Working pressure p
max
= 250 bar (Ports P, A, B)
Tank pressure
max tank pressure in T
p
max
= 160 bar
Nominal volume Q
N
= 2,5 l/min Q
N
= 10 l/min
ows Q
N
= 5 l/min Q
N
= 15 l/min
Q
N
= 20 l/min
Min. volume ow Q
min
= 0,02 l/min
Leakage volume ow see characteristic
Resolution 1 mA ∗
Repeatability ≤ 1 % ∗
Hysteresis ≤ 2 % ∗
∗ by optimal dithersignal
TyPE CODE
VWS 4 - - TF - #
Control valve, proportional
Number of control ports
Description of symbols acc. to table
Nominal volume ow Q
N
2,5 l/min 2,5 10 l/min 10
5 l/min 05 15 l/min 15
20 l/min 20
Normally closed
Nominal voltage U
N
12 VDC G12
24 VDC G24
Design-Index (Subject to change)
NG6
ISO 4401-03
Proportional spool valves
Wanduh AG Tel. +41 33 672 72 72 E-mail: sales@wanduh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wanduh.com Data subject to change 1.10-11E 2/4
CH-3714 Frutigen Edition 11 02
ELECTRICAL SPECIFICATIONS
Construction Proportional solenoid, wet pin push type, pressure tight.
Standard-Nominal voltage U = 12 VDC U = 24 VDC
Limiting current: PI35V I
G
= 1250 mA I
G
= 680 mA for VWS4.61 Q
N
2,5…10 l/min
for VWS4.62 Q
N
2,5…10 l/min
PI45V I
G
= 1780 mA I
G
= 810 mA for VWS4.61 Q
N
15…20 l/min
for VWS4.62 Q
N
15…20 l/min
Relative duty factor 100 % DF (see data sheet 1.1-430)
Prodection class IP 65 to EN 60 529
Connection / Power Over device plug connection to
supply ISO 4400 / DIN 43650 (2P+E)
Other electrical specications see data sheet: 1.1-115 (PI35V)
1.1-130 (PI45V)
D61
Z61a
Z61b
Z62b
Z62a
D62
Q
L
= f (p) Leakage volume ow characteristics
per control edge
TyPE CHARTS / DESIGNATIONS OF SyMBOLS
CHARACTERISTICS oil viscosity υ = 30 mm
2
/s
Q = f (p) Volume ow-pressure-characteristics
Q
N
= 2,5 l/min
Q = f (l) Volume ow-signal-characteristics
Q = f (p) Volume ow-pressure-characteristics
Q
N
= 10 l/min
Q = f (p) Volume ow-pressure-characteristics
Q
N
= 20 l/min
3
2,5
2
1,5
1
0,5
0
0 50 100 150 200 250
p [bar]
K0415
Q [l/min]
100% l
G
75% l
G
50% l
G
12
10
8
6
4
2
0
0 50 100 150 200 250
p [bar]
K0416
Q [l/min]
100% l
G
75% l
G
50% l
G
25
20
15
10
5
0
0 50 100 150 200 250
p [bar]
K0417
Q [l/min]
100% l
G
75% l
G
50% l
G
0 10 20 30 40 50 60 70 80 90 100
l
[
%
]
K0418
Q [l/min]
25
20
15
10
5
0
Q
N
= 20 l/min
Q
N
= 10 l/min
Q
N
= 2,5 l/min
300
250
200
150
100
50
0
0 50 100 150 200 250
p [bar]
K0419
Q [cm
3
/min]
Proportional spool valves
Wanduh AG Tel. +41 33 672 72 72 E-mail: sales@wanduh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wanduh.com Data subject to change 1.10-11E 3/4
CH-3714 Frutigen Edition 11 02
DIMENSIONS
4/2-way valve VWS4.61 for Q
N
2,5…10 l/min
4/2-way valve VWS4.62 for Q
N
2,5…10 l/min
4/3-way valve VWS4.61 for Q
N
2,5…10 l/min
4/3-way valve VWS4.62 for Q
N
2,5…10 l/min
4/2-way valve VWS4.61 for Q
N
15…20 l/min
4/2-way valve VWS4.62 for Q
N
15…20 l/min
4/3-way valve VWS4.61 for Q
N
15…20 l/min
4/3-way valve VWS4.62 for Q
N
15…20 l/min
Proportional spool valves
Wanduh AG Tel. +41 33 672 72 72 E-mail: sales@wanduh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wanduh.com Data subject to change 1.10-11E 4/4
CH-3714 Frutigen Edition 11 02
PARTS LIST
Position Article Description
10 256.3454 Proportional solenoid PI35V-G24
256.3426 Proportional solenoid PI35V-G12
15 256.4454 Proportional solenoid PI45V-G24
256.4418 Proportional solenoid PI45V-G12
20 253.8000 Plug with integrated manual
override HB4,5
25 253.8001 Plug with integrated manual
override HB6
30 219.2001 Plug A (grey)
35 219.2002 Plug B (blac)
40 060.2200 Cover
45 058.4100 Cover
50 246.1161 Socket head cap screw M4 x 60 DIN 912
55 246.2160 Socket head cap screw M5 x 60 DIN 912
60 246.1111 Socket head cap screw M4 x 10 DIN 912
65 246.2117 Socket head cap screw M5 x 16 DIN 912
70 160.2093 O-ring ID 9,25 x 1,78
ACCESSORIES
Sub-plates register 2.9
Proportional-amplier register 1.13
Explications techniques voir feuille 1.0-100