DIRECTIONAL SPOOL VALVES, DIRECT OPERATED, WITH SOLENOID ACTUATION

WE 10...C

Material #: R900769652

Model : 4WE 10 RB4X/CW230N9DKL

4/3-, 4/2- or 3/2-way version High-power solenoid Porting pattern according to ISO 4401-05-04-0-05 Wet-pin AC solenoids with detachable coil Solenoid coil is rotatable by 90° The coil can be changed without having to open the pressure-tight chamber Electrical connection as individual connection or central connection Optional auxiliary operating device

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Repair

The directional valve type WE is a solenoid-actuated directional spool valve. It controls the start, stop and direction of a flow.

The directional valve basically consists of housing (1), one or two electronic solenoids (2), control spool (3), and the return springs (4). When de-energized, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for version "O"). The control spool (3) is actuated by wet-pin electronic solenoids (2).

The force of electronic solenoid (2) acts via the plunger (5) on the control spool (3) and pushes the latter from its rest position to the required end position. This enables the necessary direction of flow from P to A and B to T or P to B and A to T.

When the electronic solenoid (2) is switched off, the return spring (4) pushes the control spool (3) back to its rest position.

A manual override (6) allows for the manual switching of the valve without solenoid energization.

To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil.

Type .WE 10 E…

Throttle insert "B.."

Using a throttle insert (7) in channels P, A, B or T, the flow resistance at the valve can be increased. Its use is required when, due to prevailing operating conditions, flows occur during the switching processes, which exceed the performance limit of the valve.

Without spring return “O” (only possible with symbols A, C and D)

This version is a directional valve with 2 spool positions and 2 electronic solenoids without detent.

The valve without spring return at the control spool (3) does not have a defined basic position in the de-energized condition.

Without spring return with detent “OF” (only possible with symbols A, C and D)

This version is a directional valve with 2 spool positions and 2 electronic solenoids with detent.

The detents are used to lock the control spool (3) in the relevant spool position. During operation,

continuous application of current to the electronic solenoid can thus be omitted which contributes to energy-efficient operation.

Notice!

Pressure peaks in the tank line to two or several valves can result in unintended

movements of the control spool if valves are equipped with a detent! We therefore recommend providing separate return lines or

installing a check valve in the tank line.

Type .WE 10 ../OF…

01	3 main ports	3
01	4 main ports	4
02	Directional valve	WE
03	Size 10	10
04	Symbols e. g. C, E, EA, EB, etc.; for the possible version, see Symbols
05	Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions)	3X
05	Component series 40 … 49 (40 … 49: unchanged installation and mounting dimensions)	4X
06	With spring return	no code
	Without spring return	O
	Without spring return with detent	OF
07	High-power solenoid, wet-pin, with detachable coil	C
08	AC voltage 42 V 50/60 Hz	W42
	AC voltage 110 V 50/60 Hz / 120 V 60 Hz	W110
	AC voltage 230 V 50/60 Hz	W230
	DC voltage see data sheet 23340
09	With concealed manual override (standard)	N9
	With manual override	N
	Without manual override	no code
Electrical connection
10	Individual connection
	Without mating connector; connector DIN EN 175301-803	K41)
	With M12x1 plug-in connection, high-performance version 5-pole, integrated interference protection circuit, operating display with LED	K72L2)
	Central connection
	Cable entry at the cover, with indicator light	DL
	Central plug-in connection at the cover, with indicator light (without mating connector)	DK6L
	With M12x1 plug-in connection, high-performance version: 4-pole	DK24L2)
	With M12x1 plug-in connection, high-performance version: 4-pole, integrated interference protection circuit, operating display with LED	DK35L2)
Spool position monitoring
11	Without position switch	no code
	Inductive position switch type QM
	Monitored spool position "a"	QMAG24
	Monitored spool position "b"	QMBG24
	Monitored rest position	QM0G24
12	Without throttle insert	no code
	Throttle Ø 0.8 mm	B08
	Throttle Ø 1.0 mm	B10
	Throttle Ø 1.2 mm	B12
	Use with flows which exceed the performance limit of the valve (see Product description)
Seal material
13	NBR seals	no code
	FKM seals	V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
14	Further details in the plain text	*

01	02	03	04	05		06	07	08	09	10	11		12	13	14
	WE	10			/		C					/			*

Notice!

For valves with 3 spool positions and valves with detent (version "O" and "OF"), position switches type QM are not possible!

Notice! Preferred types and standard units are contained in the EPS (standard price list).

Inductive position switch type QM: electrical connection

general

Type			Einzelanschluss	Zentralanschluss
Weight	Valve with one solenoid	kg	3.6	3.5
	Valve with two solenoids	kg	4.4	4.3
Installation position			any
Ambient temperature range	NBR seals	°C	-30 … +50
	FKM seals	°C	-20 … +50
MTTFD values according to EN ISO 13849 1)		Years	150

1)	For further details, see data sheet 08012

hydraulic

Size			10
Maximum operating pressure	Port P	bar	315
	Port A	bar	315
	Port B	bar	315
	Port T 1)	bar	160
Maximum flow		l/min	120
Flow cross-section	Symbol Q (A/B → T)	mm²	5.5
	Symbol V (A/B → T)	mm²	11
	Symbol V (P → A/B)	mm²	10.3
	Symbol W (A/B → T)	mm²	2.5
Hydraulic fluid			see table
Hydraulic fluid temperature range 2)	NBR seals	°C	-30 … +80
Hydraulic fluid temperature range 2)	FKM seals	°C	-20 … +80
Viscosity range		mm²/s	2.8 … 500
Maximum admissible degree of contamination of the hydraulic fluid 3)			Class 20/18/15 according to ISO 4406 (c)

1)	With symbols A and B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure.
2)	at the valve working ports of the valve
3)	The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oils		HL, HLP, HLPD, HVLP, HVLPD	NBR, FKM	DIN 51524
Bio-degradable	Insoluble in water	HETG	NBR, FKM	VDMA 24568
	Insoluble in water	HEES	FKM	VDMA 24568
	Soluble in water	HEPG	FKM	VDMA 24568
Containing water	Water-free	HFDU, HFDR	FKM	ISO 12922
Containing water	Containing water	HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620 )	NBR, HNBR	ISO 12922
Important information on hydraulic fluids! For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)! The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature. Flame-resistant – containing water: Maximum pressure differential per control edge 50 bar. Pressure pre-loading at the tank port >20% of the pressure differential; otherwise, increased cavitation Life cycle compared to operation with mineral oil HL, HLP 50 to 100 % Bio-degradable: When using bio-degradable hydraulic fluids that are zinc-solving, zinc may accumulate in the fluid (700 mg zinc per pole tube)

electrical

Voltage type			AC voltage 50/60 Hz
Available voltages 1)			42 / 110 / 230
Voltage tolerance (nominal voltage)		%	± 10
Holding power		VA	90
Switch-on power		VA	550
Duty cycle		%	100
Switching time according to ISO 6403	ON	ms	15 … 25
Switching time according to ISO 6403	OFF	ms	20 … 60
Maximum switching frequency		1/h	7200
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
Insulation class VDE 0580			H
Electrical fuse protection			Every solenoid must be protected individually using a suitable fuse with tripping characteristics K (inductive loads).
Behavior in error cases			Solenoid does not switch through: The solenoid surface temperature may be exceeded.

1)	Special voltage upon request; mains for AC solenoids, see notice and ordering code.

electrical

Connection voltage (DC voltage)				24 V
Voltage tolerance (connection voltage)				+30 %/-15 %
Admissible residual ripple			%	≤ 10
Max. load capacity			mA	400
Switching outputs				PNP transistor outputs, load between switching outputs and GND
Pinout	1		V	24
	2, 4	Switching output	mA	400
	3	Earthing (GND)	V	0

M12x1 plug-in connection

The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12 x 1.

electrical

M12x1 plug-in connections 1)			K72L, DK24L, DK35L
Available voltages 2)		V	24
Limited switch-off voltage peak	K72L, DK35L	V	-44 … -55
Limited switch-off voltage peak	DK24L		without limitation
Voltage tolerance (nominal voltage)		%	± 10
Power consumption		W	35
Duty cycle		%	100
Switching time according to ISO 6403	ON	ms	45 … 60
	Smoothly switching ON		3 to 4 times longer than standard
	OFF	ms	20 … 30
	Smoothly switching OFF		3 to 4 times longer than standard
Maximum switching frequency	Standard	1/h	15000
Maximum switching frequency	Smoothly switching	1/h	7200
Protection class according to DIN EN 60529 3)			IP65
Protection class according to DIN EN 61140			III
Maximum coil temperature 4)		°C	150

1)	Mating connectors according to IEC 60947-5-2, separate order, see data sheet 08006
2)	Connection to functional low voltage with secure separation only = PELV/SELV
3)	Only with the use of the mating connectors indicated by us and with correct installation.
4)	Due to the surface temperatures of the solenoid coils, the standards ISO 13732-1 and EN 982 need to be adhered to!

Notice!

Valve versions with electrical individual connection “K…” or central connection “DK…”, see Ordering code.

Notices!

The solenoid coils must not be painted. Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override!

(Special tool for actuation, separate order, material no. R900024943). When the manual override is blocked, actuation of the opposite solenoid must be ruled out!

The simultaneous actuation of 2 solenoids of one valve must be ruled out! Use cables that are approved for a working temperature above 105° C. When solenoid coils are switched off, voltage peaks result which may cause faults or damage in the connected control electronics. The user has to provide for a suitable circuit for limiting the voltage peaks. It must be noted that a diode switched in an antiparallel form extends the switching off time. Valves with individual connection and a supply voltage of 12 V or 24 V can be operated with twice the voltage to reduce the switching time. For this purpose, the voltage has to be reduced to the nominal valve voltage after 100 ms by means of pulse width modulation. The maximum admissible switching frequency is 5 1/s. Due to possible overload of the board, valves with central connection must not be operated with twice the voltage.

Notice!

AC solenoids can be used for 2 or 3 mains; e. g. solenoid type W110 for: 110V, 50Hz; 110 V, 60Hz; 120V, 60Hz

In the electrical connection, the protective earthing conductor (PE, grounded) is to be connected in accordance with the stipulations.

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

Δp-qV characteristic curves

Symbol	Direction of flow
Symbol	P-A	P-B	A-T	B-T
A; B	3	3	-	-
C	3	3	4	5
D; Y	5	5	6	6
E	1	1	4	4
F	2	3	7	4
G	3	3	6	7
H	1	1	6	7
J	1	1	3	3
L	2	2	3	5
M	1	1	4	5
P	4	2	5	7
Q	1	2	1	3
R	3	6	4	-
T	3	3	6	7
U; V	2	2	3	3
W	2	2	4	5

Central position:
Symbol	Direction of flow
Symbol	P-A	P-B	B-T	A-T	P-T
F	4	-	-	9	9
P	-	5	8	-	10
G, T	-	-	-	-	9
H	-	-	-	-	3

Switching position:
Symbol	Direction of flow
Symbol	P - A	B - A	A - T	P - T
R	-	9	-	-

Notice!

The specified performance limits are valid for use with two directions of flow (e. g. from P to A and simultaneous return flow from B to T).

Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from P to A while port B is blocked)!

In such use cases, please consult us!

The performance limit was determined when the solenoids were at operating temperature, at 10% undervoltage and without tank preloading.

Performance limits

(measured with HLP46, ϑOil = 40 ±5 °C)

Characteristic curve	Symbol
1	C; C/O; C/OF; D; D/O; D/OF; Y
2	E; L; U; Q; W
3	A/O; A/OF; J
4	F; P
5	T
6	H
7	R
8 2)	L; U

42 V, 50 Hz; 110 V, 50 Hz; 120 V, 60 Hz;

127 V, 50 Hz; 220 V, 50 Hz; 240 V, 60 Hz

Characteristic curve	Symbol
9	M
10	A, B
11	G
12	V

42 V, 50 Hz; 110 V, 50 Hz; 120 V, 60 Hz;

127 V, 50 Hz; 220 V, 50 Hz; 240 V, 60 Hz

Notice!

The specified performance limits are valid for use with two directions of flow (e. g. from P to A and simultaneous return flow from B to T). Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from P to A while port B is blocked)!

In such use cases, please consult us!

The performance limit was determined when the solenoids were at operating temperature, at 10% undervoltage and without tank preloading.

Performance limits

(measured with HLP46, ϑOil = 40 ±5 °C)

Performance limits (measured with HLP46, ϑOil = 40 ±5 °C)

Characteristic curve	Symbol
13	C; C/O; C/OF;D; D/O; D/OF; Y
14	A/O; A/OF
15	E
16	M
17	V
18	H

42 V, 60 Hz; 110 V, 60 Hz;

127 V, 60 Hz; 220 V, 60 Hz

Please consult us regarding the performance limits for other symbols.

1)	Example: Symbol E with spool position "a" ordering code ..EA..

Notices!

Representation according to DIN ISO 1219-1.

Hydraulic interim positions are shown by dashes.

Inductive position switch type QM Switching logics

Version QMA

(Position switch on side B, monitored spool position "a")

Version QMA

(Position switch on side A, monitored spool position "a")

Version QMB

(Position switch on side B, monitored spool position "b")

Version QMB

(Position switch on side A, monitored spool position "b")

Version QM0

(Position switch on side B, monitored rest position)

Version QM0

(Position switch on side A, monitored rest position)

M12x1 plug-in connection ‒ Individual connection – “K72L”

Pin 5 without function

M12x1 plug-in connection ‒ Central connection – “DK35L”

M12x1 plug-in connection ‒ Central connection – “DK24L”

Individual connection

Dimensions in mm

Notice!

Deviating from ISO 4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. The dimensions are nominal dimensions which are subject to tolerances.

Central connection

Dimensions in mm

4	Cover Attention! The valve may only be operated with properly mounted cover!
7	Cable gland Pg 16 [1/2“ NPT] "DL"
8	Angled socket (color red, separate order) material no. R900005538)
12	Space required to remove the mating connector/angled socket

Terminal assignment with central connection:

1 solenoid:

Always connect the solenoid to terminals 1 and 2,

the protective earthing conductor to terminal PE, grounded

2 solenoids:

Always connect solenoid "a" to terminals 1 and 2,

solenoid "b" to terminals 3 and 4,

the protective earthing conductor to terminal PE, grounded

Notice!

Deviating from ISO 4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. The dimensions are nominal dimensions which are subject to tolerances.

Subplates according to data sheet 45054 (separate order)

G 66/01 (G3/8)

G 67/01 (G1/2)

G 534/01 (G3/4)

G 66/12 (SAE-6; 9/16-18)1)

G 67/12 (SAE-8; 3/4-16)1)

G 534/12 (SAE-12; 1-1/16-12)1)

1) Upon request

Valve mounting screws (separate order)

4 hexagon socket head cap screws, metric

ISO 4762 - M6 x 40 - 10.9-flZn-240h-L

(friction coefficient µtotal = 0.09 … 0.14);

tightening torque MA = 12.5 Nm±10 %,

material no. R913000058

4 hexagon socket head cap screws

ISO 4762 - M6 x 40 - 10.9 (self procurement)

(friction coefficient µtotal = 0.12 … 0.17);

tightening torque MA = 15.5 Nm±10 %

4 hexagon socket head cap screws UNC

1/4-20 UNC x 1-1/2” ASTM-A574

(friction coefficient µtotal = 0.19 … 0.24);

tightening torque MA = 20 Nm ±15 %,

(friction coefficient µtotal = 0.12 … 0.17);

tightening torque MA = 14 Nm ±10 %,

material no. R978800710

With different friction coefficients, the tightening torques are to be adjusted accordingly!

Spool position monitoring

Inductive position switch type QM

Dimensions in mm

1)	For dimensions, see valve dimensions

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

M12x1 plug-in connection ‒ Individual connection

Type .WE 10 .3X/.CG24.K72L…

Dimensions in mm

M12x1 plug-in connection ‒ Central connection

Type .WE 10 .4X/.CG24.DK…

Dimensions in mm

12	Space required to remove the mating connector
20	M12x1 plug-in connection with status LED (mating connectors according to IEC 60947-5-2, separate order, see data sheet 08006); electrical connections “DK35L” and “DK24L” see Electrical connections

12	Space required to remove the mating connector
20	M12x1 plug-in connection with status LED (mating connector according to IEC 60947-5-2, separate order, see data sheet 08006); electrical connections “K72L”: see Electrical connections

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z45

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z45

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair