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BOSCH REXROTH
2WRCE32S650L-2X/PG24K31/C1WK15V
R901402694
High-Response Directonal Valves

Name: BOSCH REXROTH 2WRCE32S650L-2X/PG24K31/C1WK15V
Brand: BOSCH REXROTH
SKU: 857183
Availability: OutOfStock

Throttle control valves: 2WRC* 32.-2x/P

BOSCH REXROTH

MATERIAL: R901402694

SUMMARY: Throttle control valves: 2WRC* 32.-2x/P

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Valves of type 2WRCE are 3-stage high-response valves. They control the quantity and direction of a flow and are mainly used in control loops.

Set-up

They consist of the following assemblies:

the pilot control valve (1) as 1-stage proportional valve (pilot), with two solenoids as electro-mechanical converters and a control spool that is connected to the integrated pilot electronics via electrical feedback (6.2). the second stage (2) for flow control an inductive position transducer (3) the core (4) of which is attached to the spool (5) of the third stage and integrated control electronics (6.1).

Function

The integrated electronics (OBE) compares command and actual values and the solenoids of the pilot control valve are actuated with a proportional current according to the control deviation.

The pilot control valve takes a proportionally controlled position and controls the flow in and out of the control chambers A (7) and B (8) that actuate the main spool (5) through the closed valve control loop up to 0 control deviation.

This means that the stroke of the main spool is regulated proportionally to the command value. It must be noted that the flow also depends on the valve pressure drop.

Valve particularities

The flow can pass through the valve from A to B or from B to A.

The seat spool closes or opens at 5 % of the command value. At lower command values, the valve control loop attempts to guide the spool and thus presses it onto the seat at full pilot pressure and blocks the connection in a leak-free way.

The specified valve dynamics only apply to the control area of the valve. At command value steps from the seat to lower opening values, additional delay times occur.

The opening point of 5 % (= 0.5 V or 0.5 mA) is set at the factory. Upon exchange of the pilot control valve or the controller, normally no settings have to be made.

During the exchange, no settings must be made at the control electronics (= controller or control electronics) and the pilot control valve, except for the zero adjustment at the position transducer.

If required, you can, however, readjust the pilot zero point after a pilot exchange using R321 or the zero point of the complete valve in case of controller exchange using R316

Due to the internal setting of the pilot control valve, the pilot pressure is connected to control chamber B (8) in case of a power failure, i.e. the main stage is closed.

The control electronics feature an offset to compensate the trimming of the pilot control valve (pilot trimming).

Due to differences in diameter in the seat range, the spools are statically not pressure-compensated. To compensate the force differential, 6%/22% of the system pressure at spool “S...L”/”S...R” is required as pilot pressure. With reserves for flow force and dynamics, this defines the recommended minimum pilot pressure (see technical data).

technical illustration-2WRCE32S650L-2X/PG24K31/C1WK15V-Throttle control valves: 2WRC* 32.-2x/P

01	02	03	04	05	06		07		08	09	10		11	12	13	14
2	WRCE		S			‒	2X	/	P	G24	K31	/				*

01	2/2 directional valve		2
02	Electrically operated high-response valve for block installation with integrated electronics (OBE)		WRCE
03	Size 32		32
	Size 40		40
	Size 50		50
04	Seat control spool		S
Rated flow at 5 bar valve pressure drop
05	Size 32	650 l/min linear	650
			480
	Size 40	1000 l/min linear only ...S1000L...	1000
		700 l/min with fine control range only ...S700R...	700
	Size 50	1600 l/min linear only ...S1600L...	1600
		1100 l/min with fine control range only ...S1100R...	1100
Characteristic curve form
06	Linear		L
	Linear with progressive fine control range		R
07	Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) - Size 6		2X
Pilot control valve
08	Proportional valve		P
09	Supply voltage 24 VDC		G24
Electrical connection
10	Without mating connector, with connector according to DIN EN 175301-804, separate order		K31
Electrical interface
11	Command value 0 ...+10 V, actual value 0.5 ...+10 V		A1
	Command value 0 ...+10 mA, actual value 0.5 ...+10 mA		C1
Sandwich plate shut-off valve
12	Without shut-off valve		no code
	With shut-off valve
	De-energized shut-off valve actively closes “2WRC” with applied pilot pressure		WK15
	De-energized shut-off valve actively opens “2WRC” with applied pilot pressure		WL15
Seal material
13	NBR seals		M
	FKM seals		V
14	Further details in the plain text		*

For applications outside these parameters, please consult us!

general

Type			2WRCE.../P
Size			32	40	50
Component series			2X
Installation position			any, preferably horizontal
Earth		kg	12.5	19.9	26.8
Earth	With shut-off valve	kg	13.7	21.1	28
Storage temperature range		°C	-20 … +80
Ambient temperature range		°C	-20 … +50
Sine test according to DIN EN 60068-2-6			5...2000 Hz / maximum of 10 g / 10 cycles
Noise test according to DIN EN 60068-2-64			20...2000 Hz / 10 gRMS / 30 g peak / 30 min / 3 axes
Transport shock according to DIN EN 60068-2-27			15 g / 11 ms

hydraulic

Type				2WRCE.../P
Size				32	40	50
Maximum operating pressure			bar	420
Maximum operating pressure	Port A		bar	420
	Port B		bar	420
Maximum operating pressure	Pilot control valve	Port X	bar	315
		Port Y	bar	210
Nominal flow	Version ...S...L (linear)		l/min	650	1000	1600
	Version ...S...R (linear with progressive fine control range)		l/min	480	700	1100
Zero flow	Proportional pre-stage	min.
		max.
Minimum pilot pressure	Control spool S...L		%	15
	Control spool S...R		%	45
Maximum flow			l/min	2000	3000	4500
Maximum flow	Control spool S...L		l/min	1500	2200	3500
	Control spool S...R		l/min	2000	3000	4500
Pilot flow			l/min	37	45	60
Hydraulic fluid temperature range			°C	-20 … +80
	preferably		°C	+40 … +50
Viscosity range			mm²/s	20 … 380
	preferably		mm²/s	30 … 45
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)				Class 20/18/15 according to ISO 4406 (c)
Hysteresis			%	≤ 0.2
Response sensitivity			%	≤ 0.1
Range of inversion			%	≤ 0.1
Closing time 2)	Pilot control valve		ms	≤ 200
	Sandwich plate shut-off valve		ms	≤ 200

1)	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.
2)	With pilot pressures from 40 to 315 bar

Hydraulic fluid	Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons	HL, HLP, HLPD, HVLP, HVLPD	NBR / FKM	DIN 51524
Flame-resistant - containing water	HFC (Fuchs, Hydrotherm 46M, Petrofer Ultra Safe 620)	NBR	ISO 12922
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.).	Flame-resistant - containing water: Maximum pressure differential per control edge 175 bar Pressure pre-loading at the tank port > 20 % of the pressure differential, otherwise increased cavitation Life cycle as compared to operation with mineral oil HL, HLP 50 % to 100 %

electrical

Type			2WRCE.../P
Voltage type			Direct voltage
Type of signal			analog
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
EMC (electro-magnetic compatibility)			Tested according to EN 61000-6-2:2001 / VDE 0839 part 6-2 and EN 61000-6-3:2001 / VDE 0839 part 6-3
Zero point calibration		%	≤ 1
Zero shift upon change of	Hydraulic fluid temperature	%/10 K	≤ 0.3
	Operating pressure	%	≤ 0.7
	Pilot pressure	%/100 bar	≤ 0.7

measured with HLP32, ϑOil = 40±5 °C

Rated flow at 5 bar valve pressure differential A → B = B → A

2WRCE 32...

2WRCE 40...

2WRCE 50...

Detailed	simplified
Type 2WRCE...-2X/P	Type 2WRCE...-2X/P
Type 2WRCE...-2X/P...WK15...	Type 2WRCE...-2X/P...WK15...
Type 2WRCE...-2X/P...WL15...	Type 2WRCE...-2X/P...WL15...

Nominal command value range:0 ... +10 V (mA) ≙ 0 ... 100 %In the command value range of 0 ... 0.5 V, the actual value remains constant at 0.5 V.In case of a slow command value modification from 0.5 V ... +10 V, the actual value follows the command value within ±0.15 V. With command values of more than +10 V, the actual value will follow to approx. +12 V. At a command value step to +10 V, the actual value can reach short-time values of up to approx. 10.5 V.

Pin assignment	Contact	Interface A1	Interface C1
Power supply	A	24 VDC nominal (18 ... 30 V; Iaverage = 1A, Ipeak = 3 A)
Power supply	B	0 VDC
Measurement zero	C	Reference contact F
Differential command value input	D E	0 to +10 V Input resistance > 100 kΩ	0 ... +10 mA; load resistance 100 Ω
Actual value Reference is pin C	F	+0,5 ... +10 V; maximal 10 mA	+0.5 ... +10 mA; load resistance maximum 1 kΩ
	PE	connected to valve housing; do not connect if the valve has already been grounded via the system

Command value and actual value have the same polarity. In case of failure of the fuse “1 A fast”, the actual value may temporarily also be measured between F and B.

Notice:

Electrical signals provided via control electronics (e.g. actual value) must not be used to switch off safety-relevant machine functions!

(See also the European standard "Safety requirements for fluid-powered systems and their components - Hydraulics", EN 982.)

Size 32

1	Pilot control valve (proportional directional valve NG6)
2	Sandwich plate shut-off valve (only with versions “WK15” and “WL15”)
3	Socket
4	Mating connector according to DIN EN 175201-804, separate order
5	Mating connector according to DIN EN 175301-803, separate order
6	Space required to remove the mating connector
7	Cabling
8	Valve mounting screws (included in the scope of delivery): 4 hexagon socket head cap screws ISO 4762 - M16 x 100- 10.9 Tightening torque for tightening factor 1.6: 280 Nm
9	Locking pin for locating hole
10	Identical seal rings for ports X and Y
11	Name plate

NG40

1	Pilot control valve (proportional directional valve NG6)
2	Sandwich plate shut-off valve (only with versions “WK15” and “WL15”)
3	Socket
4	Mating connector according to DIN EN 175201-804, separate order
5	Mating connector according to DIN EN 175301-803, separate order
6	Space required to remove the mating connector
7	Cabling
8	Valve mounting screws (included in the scope of delivery): 4 hexagon socket head cap screws ISO 4762 - M20 x 180- 10.9 Tightening torque for tightening factor 1.6: 560 Nm
9	Locking pin for locating hole
10	Identical seal rings for ports X and Y
11	Name plate

NG50

1	Pilot control valve (proportional directional valve NG6)
2	Sandwich plate shut-off valve (only with versions “WK15” and “WL15”)
3	Socket
4	Mating connector according to DIN EN 175201-804, separate order
5	Mating connector according to DIN EN 175301-803, separate order
6	Space required to remove the mating connector
7	Cabling
8	Valve mounting screws (included in the scope of delivery): 4 hexagon socket head cap screws ISO 4762 - M20 x 190- 10.9 Tightening torque for tightening factor 1.6: 560 Nm
9	Locking pin for locating hole
10	Identical seal rings for ports X and Y
11	Name plate

NG32 to 50

Installation bore according to ISO 7368

1	Depth of fit, minimum dimension
2	The ports P, T and B can be positioned around the central axis of port A. Sufficient distance from the mounting and control bores is to be observed
3	Bore for locating pin
	Tolerances according to ISO 2768-mK

NG	ØD1H7	ØD2H7	ØD3H7	ØD4	ØD5	ØD6H7	ØD7	D8	max. ØD9	ØD10	H1	H2	H3	H4	H5	H7	H8	H9	H10	H11	H12	H13	H16	H17	H18	L1	L2	L3	L4	L5
	mm	mm	mm	mm	mm	mm	mm		mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
32	60	58	55	32	24	45	32	M16	8	6	70	85	52	30	13	43.5	85	100	30	70.5	18	15	2.5	2.5	35	105	70	35	41	17
40	75	73	55	40	30	55	40	M20	10	6	87	105	64	30	15	54	105	125	36	87	21	18	3	3	45	125	85	42.5	50	23
50	90	87	68	50	35	68	50	M20	10	8	100	122	72	35	17	87	143	165	66	122	48	18	4	3	45	140	100	50	58	30

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BOSCH REXROTH2WRCE32S650L-2X/PG24K31/C1WK15VR901402694High-Response Directonal Valves