Name: 4WRSEH6V12LD-3X/G24K0/A1V-280
Availability: OutOfStock

Manufacturer: Bosch Rexroth

Material #: R900618927

Model : 4WRSEH6V12LD-3X/G24K0/A1V-280

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth 4WRSEH6V12LD-3X/G24K0/A1V-280 (R900618927) is a high-response directional control valve with integrated control electronics, designed for direct operation through its solenoids. This state-of-the-art valve is engineered to regulate flow direction and magnitude with precision, making it an exceptional choice for applications involving position, velocity, and pressure control. The valve's standout features include electrical position feedback, high response sensitivity, and low hysteresis, which contribute to its reliable performance and efficiency in various control tasks. Built for subplate mounting, the 4WRSEH6V12LD-3X/G24K0/A1V-280 adheres to DIN form A and ISO standards regarding porting patterns. Its robust design incorporates a housing with a connection surface, a control spool within a sleeve supported by compression springs, solenoids with coverings, a position transducer, and accessible integrated control electronics that facilitate zero-point adjustment. Functionally, this valve operates by shifting the control spool proportionally to the electric input signal. This allows for smooth transitions from P to A and B to T through orifice-type cross-sections that exhibit continuous or inflected linear flow characteristics. In instances where the solenoid is deenergized, the compression spring ensures that the control spool reverts to a failsafe position—a critical safety feature for system integrity. The Bosch Rexroth 4WRSEH6V12LD-3X/G24K0/A1V-280 valve is characterized by its direct operated plate design which enables it to respond rapidly and accurately to electronic commands while maintaining stability even when the solenoid is switched off. It boasts specifications including a maximum operating pressure of up to 280 bar and nominal flow rates that cater to demanding hydraulic applications requiring precise flow modulation under varying conditions.

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Direct operated high-response directional valve with integrated control electronics (OBE) for the control of flow direction and size Suitable for position, velocity and pressure control purposes Operation by means of control solenoids Electrical position feedback High response sensitivity and low hysteresis Integrated electronics (OBE) For subplate mounting: Porting pattern according to DIN 24340 form A and ISO 4401 With Fail-safe position for 4/4-directional control valve

4/4 directional design

In principle, the function of these valves corresponds to the function of the 4/3-way version. With de-energized solenoid, the control spool is, however, held in a fail-safe position by a compression spring.

The 4/4 directional control valves are designed as direct operated devices in plate design. Operation is effected by means of control solenoid. The solenoid is controlled via integrated control electronics.

Set-up:

The valve basically consists of:

Housing (1) with connection surface Control spool (2) in sleeve (3) with compression springs (4) Solenoid (5) and cover (6) Position transducer (7) Integrated control electronics (8) Zero point adjustment accessible via Pg9 (9)

Functional description:

With de-energized solenoid (5), fail-safe position of the control spool (2) by compression spring (4) Direct operation of the control spool (2) by energization of a control solenoid (5)

e.g. control of the solenoid

Displacement of the control spool (2) proportionally to the electric input signal Connection from P to A and B to T via orifice-type cross-sections with continuous or inflected linear flow characteristics

Switching off the solenoid (5) The compression spring (4) brings the control spool (2) back into the fail-safe position

The 4/3 and 4/4 directional control valves are designed as direct operated devices in plate design. Operation is effected by means of control solenoids. The solenoids are controlled via integrated control electronics.

Set-up:

The valve basically consists of:

Housing (1) with connection surface Control spool (2) in sleeve (3) with compression springs (4 and 5) Solenoids (6 and 7) Position transducer (8) Integrated control electronics (9) Zero point adjustment (10) accessible via Pg9

Functional description:

4/3 directional design

With de-energized solenoids (6 and 7), mechanical central position of the control spool (2) by compression springs (4 and 5) Direct operation of the control spool (2) by energization of a control solenoid

e.g. control solenoid "b" (7)

Displacement of the control spool (2) to the left, proportionally to the electric input signal Connection from P to A and B to T via orifice-type cross-sections with continuous or inflected linear flow characteristics Switching off the solenoid (7) The compression spring (4) brings the control spool (2) back into the central position

In the de-energized condition, the control spool (2) is held in a mechanical central position by the control springs. This position does not correspond to the hydraulic central position!

When the electric valve control loop is closed and with command value presetting 0 (0 V with A1 and/or 12 mA with F1), the control spool (2) is positioned in the hydraulic central position.

01	02	03	04	05	06	07	08	09		10		11	12		13	14	15
4WRS	E	H							‒	3X	/	G24	K0	/		V	*

01	High-response directional valves, direct operated, with electrical position feedback	4WRS
02	With integrated control electronics	E
03	Control spool/sleeve	H
04	Size 6	6
04	Size 10	10
Symbols; for the possible version, see "Symbols/Circuit diagrams"
05	4/3-way version	V
05	4/4 directional design	C3, C4
Installation side of the inductive position transducer with control spool symbol “V”
06	4WRSEH.V...-3X/...	no code
06	4WRSEH.VC...-3X/...	C
Installation side of the inductive position transducer with control spool symbol “C3” and “C4”
06	4WRSEH.C.B...-3X/...	B
06	4WRSEH.C...-3X/...	no code
Rated flow at 70 bar valve pressure differential
07	Size 6
	4l/min	04 1)
	12 l/min	12
	24 l/min	24
	40 l/min	40 2)
	50 l/min	50 3)
	Size 10
	50 l/min	50
	100 l/min	100
Flow characteristic
08	Linear	L
08	Inflected characteristic curve 40%	P
Control spool overlap
09	0 ... 0,5% negativ	E 4)
09	0 ... 0,5 % positiv	D 4)
10	Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions)	3X
Supply voltage of the control electronics
11	Direct voltage 24 V	G24
Electrical connection
12	Without mating connector, with connector according to E DIN 43 563-MA6, separate order	K0
Electrical interface
13	Command value input ±10 VDC	A1
	Command value input 4 ... 20 mA	F1
Seal material
14	FKM seals	V
15	Further details in the plain text	*
1)	Use only in connection with flow characteristics "L"
2)	Only with “C” and “V” in connection with flow characteristics "P"
3)	Only with “V” in connection with flow characteristics "L"
4)	The control spool overlap in % is referred to the nominal stroke of the control spool. We recommend the D overlap for control tasks. Other control spool overlaps upon request!

For applications outside these parameters, please consult us!

general

Type			4WRSEH
Size			6	10
Component series			3X
Installation position			any, preferably horizontal
Weight	Valve with one solenoid	kg	2.3	6
	Valve with two solenoids	kg	3	7.3
Storage temperature range		°C	-20 … +80
Ambient temperature range		°C	-20 … +50

hydraulic

Type			4WRSEH
Size			6	10
Maximum operating pressure		bar	315
Maximum operating pressure	Port P	bar	315
	Port A	bar	315
	Port B	bar	315
	Port T	bar	315	210
Maximum flow		l/min	80	180
Nominal flow 1)		l/min	4 12 24 40 50	50 100
Hydraulic fluid temperature range		°C	-20 … +80
Viscosity range	Maximum admissible	mm²/s	20 … 380
	Recommended	mm²/s	30 … 46
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2)			Class 18/16/13 according to ISO 4406 (c)
Hysteresis		%	< 0.05
Response sensitivity		%	< 0.03
Range of inversion		%	< 0.03

1)	at 70 bar valve pressure differential
2)	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

Nominal flow		l/min	50	100	4, 12	24	40
Limitation of use	Symbols C, C3, C5	bar	250	150	315		160
Limitation of use	Symbols C1, C4	bar	150	100	315	200	100

Hydraulic fluid	Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons	HL, HLP	NBR / FKM	DIN 51524
Phosphoric acid esters	HFD-R	FKM
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us.

electrical

Type	4WRSEH
Size	6	10
Voltage type	Direct voltage
Type of signal	analog
Protection class according to DIN EN 60529	IP65 (with mating connector mounted and locked)

4WRSEH.V...-3X/...

4WRSEH.VC...-3X/...

4WRSEH.C.B...-3X/...

4WRSEH.C...-3X/...

Pin assignment	Contact	Assignment interface "A1"	Assignment interface "F1"
Power supply	A	24 VDC (19,4 ... 35 VDC), Imax = 2 A (NG6), Imax = 2.8 A (NG10), impulse load: 4 A
Power supply	B	0 V
Reference potential actual value	C	Reference potential for contact F; connect (star-like) to ground ⊥ on the control side	Reference potential for contact F
Differential amplifier input (command value)	D	±10 V command value; Re > 50 kΩ	4 ...20 mA command value; Re > 100 Ω
Differential amplifier input (command value)	E	Reference potential for contact D
Measuring output (actual value)	F	± 10 V; Imax = 2 mA	4 ... 20 mA; load resistance maximum 500 Ω
	PE	connected to cooling element and valve housing

Command value: Positive command value (0...10 V or 12...20 mA) at D and reference potential at E result in flow from P → A and B → T.

Negative command value (0...-10 V or 12...4 mA) at D and reference potential at E result in flow from P → B and A → T.

Actual value: Positive signal (0...10 V or 12...20 mA) at F and reference potential at C result in flow from P → A.

Connection line: Recommendation:

up to 25 m line length: Type LiYCY 7 x 0.75 mm² up to 50 m line length: Type LiYCY 7 x 1.0 mm²

External diameter 6.5 … 11 mm and/or 8 ... 13.5 mm

Connect shield to ⊥ only on the supply side.