BOSCH REXROTH
4WS2EM10-5X/30B11VH1ET315K31DV-114
R901096781
Servo Control Valves
Servo valves: 4WS*2EM 10.-5x/
BOSCH REXROTH
MATERIAL: R901096781
SUMMARY: Servo valves: 4WS*2EM 10.-5x/
Quantity in stock: 0
4WS(E)2EM10-5X/...
Valves of type 4WS(E)2EM10-5X are electrically operated, 2-stage directional servo valves. They are mainly used to control position, force and velocity.
These valves are made of an electro-mechanical converter (torque motor) (1), a hydraulic amplifier (principle: nozzle flapper plate) (2) and a control spool (3) in a sleeve (2nd stage) which is connected with the torque motor via a mechanical feedback.
An electrical input signal at the coils (4) of the torque motor generates a force by means of a permanent magnet which acts on the armature (5), and in connection with a torque tube (6) results in a torque. This causes the flapper plate (7) which is connected to the torque tube (6) via a bolt to move from the central position between the two control nozzles (8), and a pressure differential is created across the front sides of the control spool. This pressure differential results in the control spool changing its position, which results in the pressure port being connected to one actuator port and, at the same time, the other actuator port being connected to the return flow port.
The control spool is connected to the flapper plate or the torque motor by means of a bending spring (mechanical feedback) (9). The position of the control spool is changed until the feedback torque across the bending spring and the electro-magnetic torque of the torque motor are balanced and the pressure differential at the nozzle flapper plate system becomes zero.
The stroke of the control spool and consequently the flow of the servo valve are controlled proportional to the electrical input signal. It must be noted that the flow depends on the valve pressure drop.
External control electronics, type 4WS2EM10-5X/... (separate order)
External control electronics (servo amplifier) serve the actuation of the valve, amplifying an analog input signal (command value) so that with the output signal, the servo valve is actuated in a flow-controlled form.
Integrated control electronics, type 4WSE2EM10-5X/... and 4WSE2ED10-5X/...
For amplification of the analog input signal, special control electronics (10) adjusted to this valve type have been integrated. They are attached to the cover cap of the torque motor. The valve zero point can be adjusted by means of an externally accessible potentiometer.
4WSE2ED10-5X/...
For the mechanical control by the return spring, valves of this type are additionally equipped with electric spool position detection and control. The control spool position is determined by means of an inductive position transducer (11). The position transducer signal is compared to the command value by the integrated control electronics (10). Any possible control deviation is amplified electrically and fed to the torque motor as control signal. With the additional electric feedback, higher dynamic values are achieved than with the purely mechanical variant due to the electric controller amplification in the small signal range. The mechanical feedback which is also available makes sure that in case the electric voltage supply fails, the valve spool is positioned in the zero range.
The valve is only available with integrated control electronics. The valve zero point can be adjusted by means of an externally accessible potentiometer.
Notice:
Changes in the zero point may result in damage to the system and may only be implemented by instructed specialists.
Type 4WS2EM 10...
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01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
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10 |
- |
5X |
/ |
B |
K31 |
E |
V |
* |
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01 |
Directional servo valve in 4-way version with external control electronics |
4WS2E |
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Directional servo valve in 4-way version with internal control electronics |
4WSE2E |
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02 |
Mechanical feedback |
M |
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Mechanical and electrical feedback (only available with integrated electronics) |
D |
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03 |
Size 10 |
10 |
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04 |
Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) |
5X |
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Rated flow at 70 bar valve pressure differential |
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05 |
5 l/min |
5 |
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10 l/min |
10 |
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20 l/min |
20 |
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30 l/min |
30 |
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45 l/min |
45 |
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60 l/min |
60 |
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75 l/min |
75 |
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90 l/min |
90 |
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06 |
Valves for external control electronics: Coil no. 11 (30 mA / 85 Ω per coil) |
11 |
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Valves with integrated control electronics: |
9 |
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Valves with integrated control electronics: |
13 |
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Pilot oil supply and return |
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07 |
External pilot oil supply, external pilot oil return |
‒ |
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Internal pilot oil supply, external pilot oil return |
E |
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External pilot oil supply, internal pilot oil return |
T |
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Pilot oil supply internal, pilot oil return internal |
ET |
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Inlet pressure range |
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08 |
10 … 210 bar |
210 |
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10 … 315 bar |
315 |
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Electrical connection |
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09 |
Without mating connector, with connector according to DIN EN 175201-804 |
K31 |
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Control spool overlap |
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10 |
0 ... 0,5% negativ |
E |
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11 |
FKM seals, suitable for mineral oil (HL, HLP) according to DIN 51524 |
V |
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12 |
Further details in the plain text |
* |
For applications outside these parameters, please consult us!
general
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Type |
4WSE2ED | 4WS(E)2EM | ||
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Size |
10 | |||
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Component series |
5X | |||
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Installation position |
any – ensure that during start-up of the system, the pilot control is supplied with sufficient pressure (≥10 bar). | |||
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Storage temperature range |
°C |
-20 … +80 | ||
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Weight |
kg |
3.65 | 3.56 | |
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Ambient temperature range |
with OBE |
°C |
-20 … +60 | |
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without OBE |
°C |
-30 … +100 | ||
hydraulic
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Type |
4WSE2ED | 4WS(E)2EM | |||
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Maximum operating pressure |
bar |
315 | |||
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Maximum operating pressure |
Port A |
bar |
315 | ||
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Port B |
bar |
315 | |||
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Port P |
bar |
315 | |||
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Operating pressure range |
Pilot control stage |
Pilot oil supply |
bar |
10 ... 210; 10 ... 315 | |
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Maximum return flow pressure |
Port T |
Pilot oil return, external |
bar |
315 | |
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Pilot oil return, internal |
bar |
Pressure peaks < 100, static < 10 | |||
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Port Y |
bar |
Pressure peaks < 100, static < 10 | |||
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Rated flows qv nom at 70 bar valve pressure differential (35 bar/control edge) 1) |
l/min |
5 | |||
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Hydraulic fluid |
see table | ||||
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Hydraulic fluid temperature range |
°C |
-15 … +80 | |||
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preferably |
°C |
+40 … +50 | |||
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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) | ||||
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Viscosity range |
mm²/s |
15 … 380 | |||
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preferably |
mm²/s |
30 … 45 | |||
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Feedback system |
mechanical and electric | mechanical | |||
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Hysteresis (dither-optimized) |
% |
≤ 0.8 | ≤ 1.5 | ||
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Range of inversion (dither-optimized) |
% |
≤ 0.2 | ≤ 0.3 | ||
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Response sensitivity (dither-optimized) |
% |
≤ 0.1 | ≤ 0.2 | ||
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Zero adjustment flow over the entire operating pressure range |
% |
≤ 2 | ≤ 3 3) | ||
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Zero shift upon change of |
Hydraulic fluid temperature |
%/20° C |
≤ 1 | ≤ 2 | |
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Ambient temperature |
%/20° C |
≤ 1 | ≤ 2 | ||
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Operating pressure 80 … 120 % of pP |
%/100 bar |
≤ 2 | |||
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Return flow pressure 0 … 10 % of pP |
%/bar |
≤ 1 | |||
| 1) | Tolerance ±10 % with valve pressure differential Δp = 70 bar |
| 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. |
| 3) | long-term ≤ 5% |
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Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
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Mineral oils and related hydrocarbons |
HL, HLP |
NBR / FKM |
DIN 51524 |
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Flame-resistant - containing water |
HFC
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NBR |
ISO 12922 |
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Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature.
Flame-resistant - containing water: |
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electrical
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Type |
4WSE2ED | 4WS(E)2EM | ||
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Size |
10 | |||
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Rated current per coil |
mA |
30 | ||
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Protection class according to EN 60529 |
IP65 (with mating connector mounted and locked) | |||
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Type of signal |
analog | |||
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Resistance per coil |
Ω |
85 | ||
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Inductivity 1) |
Serial connection |
H |
1 | |
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Parallel connection |
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0.25 | ||
| 1) | With 60 Hz and 100% rated current |
(measured with HLP32, ϑOil =40 ±5 °C)
Flow/load function with maximum valve opening (tolerance ±10 %)
Tolerance field of the flow/signal function with constant valve pressure differential Δp
4WS.2EM 10, rated flow 5, 10, 20 l/min
4WSE2ED 10, rated flow 5, 10, 20 l/min
4WS.2EM 10, rated flow 5, 10, 20 l/min
4WSE2ED 10, rated flow 5, 10, 20 l/min
4WS.2EM 10, rated flow 5, 10, 20 l/min
4WSE2ED 10, rated flow 5, 10, 20 l/min
4WS.2EM 10, rated flow 30 l/min
4WSE2ED 10, rated flow 30 l/min
4WS.2EM 10, rated flow 30 l/min
4WSE2ED 10, rated flow 30 l/min
4WS.2EM 10, rated flow 30 l/min
4WSE2ED 10, rated flow 30 l/min
4WS.2EM 10, rated flow 45 l/min
4WSE2ED 10, rated flow 45 l/min
4WS.2EM 10, rated flow 45 l/min
4WSE2ED 10, rated flow 45 l/min
4WS.2EM 10, rated flow 45 l/min
4WSE2ED 10, rated flow 45 l/min
4WS.2EM 10, rated flow 60 l/min
4WSE2ED 10, rated flow 60 l/min
4WS.2EM 10, rated flow 60 l/min
4WSE2ED 10, rated flow 60 l/min
4WS.2EM 10, rated flow 60 l/min
4WSE2ED 10, rated flow 60 l/min
4WS.2EM 10, rated flow 75 l/min
4WSE2ED 10, rated flow 75 l/min
4WS.2EM 10, rated flow 75 l/min
4WSE2ED 10, rated flow 75 l/min
4WS.2EM 10, rated flow 75 l/min
4WSE2ED 10, rated flow 75 l/min
4WS.2EM 10, rated flow 90 l/min
4WSE2ED 10, rated flow 90 l/min
4WS.2EM 10, rated flow 90 l/min
4WSE2ED 10, rated flow 90 l/min
4WS.2EM 10, rated flow 90 l/min
4WSE2ED 10, rated flow 90 l/min
(measured with HLP46, ϑOil = 40 ±5 °C)
4WSE2ED 10…
4WS2EM 10…
The electrical connection can be designed as parallel or serial connection. For reasons of operational safety and the resulting lower coil inductivity, we recommend the parallel connection.
The bridge E-F can be used for electrical recognition of the correct connection of the connector or for cable break detection.
Parallel connection:
Connect contact A with B and C with D in the mating connector.
Serial connection:
Connect contact B with C in the mating connector.
Electrical control from A (+) to D (-) provides for the direction of flow P to A and B to T. Reverse electrical control provides for the direction of flow P to B and A to T.
E → F = bridge
Type 4WS2EM 10...
Type 4WSE2EM 10...
Type 4WSE2ED 10...
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Pin assignment |
Contact |
Current control "13" |
Voltage control "9" |
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Power supply |
A |
+ 15 V |
+ 15 V |
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B |
- 15 V |
- 15 V |
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C |
⊥ |
⊥ |
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Command value |
D |
±10 mA; Re = 100 Ω |
+ 10 V; Re ≥ 50 kΩ |
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E |
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Measuring output for control spool |
F 1) 2) |
± 10 mA → maximum load resistance 1 kΩ |
+ 10 V against ⊥; Ri = 4.7 kΩ |
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1) |
With valves with mechanical feedback, port F is not assigned |
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2) |
With nominal control spool stroke |
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Current consumption at the mating connector port |
A |
max. 150 mA |
max. 150 mA |
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B |
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D |
0 ... ±10 mA |
≤ 0,2 mA |
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E |
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Supply voltage:
±15 V ±3 %, residual ripple < 1 %
Command value:
Command value at the mating connector port D = positive against mating connector port E results in flow from P to A and B to T. Measuring output F has positive signal against ⊥.
Command value at the mating connector port D = negative against mating connector port E results in flow from P to B and A to T. Measuring output F has negative signal against ⊥.
Measuring output:
The voltage or current signal is proportional to the control spool stroke.
Notice:
Electrical signals provided via control electronics (e.g. actual value) must not be used to switch off safety-relevant machine functions!
mechanical feedback / external control electronics, type 4WS2EM 10-5X/...
Dimensions in mm
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1 |
Cap |
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2 |
Mating connector, separate order |
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3 |
Space required to remove the mating connector |
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4 |
Exchangeable filter element with seals |
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5 |
Profile seal for filter screw M16 x 1.5; part of item 4 |
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6 |
Name plate |
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7 |
Identical seal rings for port A, B, P, TA, TB |
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8 |
Identical seal rings for ports X and Y |
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9 |
Machined valve contact surface; Porting pattern according to ISO 4401-05-05-0-05 |
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10 |
Valve mounting screws (included in the scope of delivery): |
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Subplates must be ordered separately |
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mechanical feedback / integrated control electronics, type 4WSE2EM 10-5X/...
Dimensions in mm
|
1 |
Cap with integrated control electronics |
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2 |
Electrical zero point setting |
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3 |
Mating connector, separate order |
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4 |
Space required to remove the mating connector |
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5 |
Exchangeable filter element with seals |
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6 |
Profile seal for filter screw M16 x 1.5; part of item 4 |
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7 |
Name plate |
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8 |
Identical seal rings for port A, B, P, TA, TB |
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9 |
Identical seal rings for ports X and Y |
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10 |
Machined valve contact surface; Porting pattern according to ISO 4401-05-05-0-05 |
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11 |
Valve mounting screws (included in the scope of delivery): |
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Subplates must be ordered separately |
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electric and mechanical feedback / integrated control electronics, Type 4WSE2ED 10-5X/...
Dimensions in mm
|
1 |
Cap with integrated control electronics |
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2 |
Electrical zero point setting |
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3 |
Mating connector, separate order |
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4 |
Space required to remove the mating connector |
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5 |
Exchangeable filter element with seals |
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6 |
Profile seal for filter screw M16 x 1.5; part of item 4 |
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7 |
Name plate |
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8 |
Identical seal rings for port A, B, P, TA, TB |
|
9 |
Identical seal rings for ports X and Y |
|
10 |
Machined valve contact surface; Porting pattern according to ISO 4401-05-05-0-05 |
|
11 |
Valve mounting screws (included in the scope of delivery): |
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Subplates must be ordered separately |
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Flushing plate with porting pattern according to ISO4401-05-05-0-05
Dimensions in mm
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1 |
R-ring 13.0 x 1.6 x 2.0 (ports P, A, B, T, T1) |
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2 |
R-ring 11.18 x 1.6 x 1.78 (ports X, Y) |
|
3 |
Mounting screws (included in the scope of delivery):4 hexagon socket head cap screws ISO 4762 - M6 x 50 - 10.9-flZn-240h-L |
To ensure proper operation of the servo valves, it is necessary to flush the system before commissioning.
The following values are guidelines for the flushing time per system: t ≥ V : QV x 5
t = flushing time in h
V = tank capacity in l
QV = Pump flow in l/min
When replenishing more than 10% of the tank capacity, the flushing procedure must be repeated.
The use of a directional valve with port according to ISO 4401-05-05-0-05 is suited better than a flushing plate. With this valve, you can also flush the actuator ports.
Mating connectors for valves with round connector, 6-pole + PE
7P Z31
Mating connectors for valves with round connector, 6-pole + PE
7P Z31
For valves with round connector according to EN 175201-804, 6-pole + PE as well as 6-pole, compatible with VG 95328Data sheet
Spare parts & repair