DESCRIPTION FEATURES
Direct acting, solenoid-operated directional valve
Low hysteresis of switching points
Coil rotatable by 360°, enables flexible installation
Interface according to ISO 4401-03
With integrated sensor for switch position monitoring
HYDAC 4/2 4/3 directional spool
valves in the series 4WER 6 are
directional valves for oil-hydraulic
systems which serve to open and
close flow paths. The valve is
actuated by an oil-immersed
solenoid. During this process, the
solenoid pushes the valve‘s control
spool into the respective position to
obtain the desired flow path.
Depending on the version, either the
starting position 0, the position A or
the position B can be detected. As
the electric switching signal is
already applied shortly before the
end position is reached, the spool
elements have an overlap range.
This ensures that the possible flow
in the switching points is minimal.
4/2 and 4/3 directional spool valves
with switch position monitoring
solenoid-operated, direct-acting
4WER 6
Nominal size 6
up to 80 l/min
up to 350 bar
EN 5.249.31.1/05.22
1
CONTENTS
Description 1
Features 1
Model code 2
Spool types / Symbols 2
Function 3
Section view 3
Technical data 4
Performance 5
Switch position monitoring R0 5
Switch position monitoring RA/ RB 5
Switching logic 6
Dimensions 7
Accessories 8
MODEL CODE
4WE RA 6 D S01 - 24 D G /V
Type
4/2 or 4/3 directional valve, direct acting
Switch position monitoring
R0 = de-energised switch position monitoring with a sensor
RA = energised switch position monitoring of coil A with a sensor
RB = energised switch position monitoring of coil B with a sensor
Nominal size
6
Symbol
see page 3
Series
S01 = specified by manufacturer
Rated voltage of the solenoid coil
12 = 12 V DC
24 = 24 V DC
110 = 110 V DC
220 = 220 V DC
Type of voltage
D = DC voltage
Electrical connection
G = device connector, DIN EN 175301-803 A
Sealing material
N = NBR
V = FKM
2
EN 5.249.31.1/05.22
The solenoid-operated directional spool valves of the type 4WER 6 are used to control nominal flow and are made up
of one valve casing (1) and an associated valve spool (2). Depending on the type, the valve is equipped with two
return springs and (3) one or two pole tubes (4) and solenoid coils (5) each.
The valve is hydraulically controlled by operating the valve spool using solenoids.
The energised solenoid uses the guide rod (6) to move the valve spool into the desired position. This causes the
nominal flow directions between the respective ports to be released or closed. Leaving the initial position and reaching
the end position is detected by a non-contact position sensor (7) with a change in the output signal. To obtain the
valve’s optimum switching capacity, the pressure-tight chamber of the pole tube should always be filled with oil.
The valve spool is pushed back into the starting position by the appropriate return spring after de-energisation of the
solenoid.
FUNCTION
3
SPOOL TYPES/ SYMBOLS
Type Basic symbol
D
D-OF
EA
EB
GA
Y
4/2 DIRECTIONAL SPOOL VALVES 4/3 DIRECTIONAL SPOOL VALVES
Type Basic symbol
E
G
J
L
EN 5.249.31.1/05.22
General specifications
MTTF
d
150 - 1200 years, according to DIN EN ISO 13849-1:2016; Table
C.1, confirmation of ISO 13849-2:2013; Tables C.1 and C.2
Ambient temperature [°C] -20 to +50
Installation No orientation restrictions
Weight [kg] 1.8 with one solenoid;
2.2 with two solenoids
Material Valve casing: Cast iron
Coil casing: Steel
Name plate: Aluminium
Surface coating Valve casing: Phosphate plated
Coil casing: Zn-coating
Hydraulic specifications
Operating pressure [bar] Port P, A, B: 350
Port T: 210
Flow rate [l/min] max. 80
Operating fluid Hydraulic oil to DIN 51524 Part 1, 2 and 3
Media operating temperature range [°C] -20 to +80
Viscosity range [mm²/s] 10 to 400
Permitted contamination level of
operating fluid
Class 20/18/15 according to ISO 4406 or cleaner
Max. switching frequency [1/h] 15,000
Sealing material FKM, NBR
Electrical specifications
Switching time [ms] energized: approx. 25 - 75
de-energized: approx. 15 - 25
Type of voltage
DC voltage
Nominal voltage [V] 12 24
Voltage tolerance [%] ±10
Nominal power [W] 32,7 31
Duty cycle [%] 100
Protection class according to DIN EN
60529
with electrical connection “G” IP65 ²
Sensor data
Supply voltage 24 Volt: 20 to 32 VDC
12 Volt: 10.5 to 16 VDC
Reverse polarity protection for supply Yes
Outputs 2 with change-over function PNP
Output load ≤ 400 mA
Short circuit protection Resistant to short circuits
Connector Round connector M12x1 (4-pole)
Protection class (for complete valve) IP65 according to DIN EN 60529
EC conformity / EMC 2014/30/EU
¹ See “Conditions and Instructions for Valves” in brochure 53.000
² If installed correctly
TECHNICAL DATA ¹
4
EN 5.249.31.1/05.22
measured at T
oil
= 50°C and 36 mm²/s
Pressure loss Power limits
PERFORMANCE
Performance assignment to the associated spools:
The specified power limits for directional valves are
applicable to use with two nominal flow directions. In the
case of only one flow direction, the power limits may be
lower.
For operation with G96/G205 coils, the max. flow rate
shown in the graph must be reduced by 10 %. The
switching times are extended.
Spools
Pressure loss
Performance
limits
P→AB→TP→BA→TP→T
D, D-OF, Y 2 2 2 2 - 1
E, EA, EB 2 3 2 3 - 1
G, GA 5 5 5 5 3 2
J 3131- 3
Y 2222- 1
SWITCH POSITION MONITORING
R0
Pin Value Function
1 +24 V supply
2NC
normally
closed
30 V -
4NO
normally
open
SWITCH POSITION MONITORING
RA / RB
Pin Value Function
1 +24 V supply
2NC
normally
closed
30 V -
4NC
normally
closed
5
EN 5.249.31.1/05.22
SWITCHING LOGIC
Note: Check the compatibility of the symbol and sensor type.
Sensor
type
Symbol
E/ G/ J/ L EA/ GA/ D EB/ Y D-OF
R0 x x x
RA x x
RB x x
6
Signal 1
Signal 0
Signal 1
Signal 0
Signal 1
Signal 0
Signal 1
Signal 0
-100 -50 0 50 100
Stroke [%]
100 50 0
Stroke [%]
Sensor type R0 (Symbols E, G, J and L) Sensor type R0 (Symbols EB and Y)
Sensor type R0 (Symbols D, GA and EA) Sensor type RB (Symbols Y, EB and D-OF)
Signal 1
Signal 0
Signal 1
Signal 0
Signal 1
Signal 0
Signal 1
Signal 0
0 50 100
Stroke [%]
100 50 0
Stroke [%]
Sensor type RA (Symbols D, D-OF, GA and EA)
Signal 1
Signal 0
Signal 1
Signal 0
0 50 100
Hub [%]
EN 5.249.31.1/05.22
DIMENSIONS
Interface according to ISO 4401-03-02-0-05
Mounting screws:
(not included in the scope of delivery)
DIN EN ISO 4762 – M5x30 – 10.9
Torque: 5 Nm
With two solenoids
With one solenoid
Note: In accordance with EN 693:2011, the valves have no manual override.
7
EN 5.249.31.1/05.22
ACCESSORIES
Note
The information in this brochure relates
to the operating conditions and
applications described.
For applications or operating conditions
not described, please contact the
relevant technical department.
Subject to technical modifications.
HYDAC Fluidtechnik GmbH
Justus-von-Liebig-Str.
D-66280 Sulzbach/Saar
Tel: 0 68 97 /509-01
Fax: 0 68 97 /509-598
E-Mail: valves@hydac.com
Designation Part no.
Seal kits
(4-piece set)
9,25 x 1,78 80 Sh NBR 3492432
9,25 x 1,78 80 Sh FKM 3120269
Mounting screws Zyl-Shr.ISO4762-M 5x 30-10.9 603227
EN 5.249.31.1/05.22
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