BOSCH REXROTH
4WRZEM16E150-1X/6EG24K31/A1D3M
R901155719
Proportional Directional Valves
Prop. dir. valves: WRZ* 16.-1x/
BOSCH REXROTH
MATERIAL: R901155719
SUMMARY: Prop. dir. valves: WRZ* 16.-1x/
Quantity in stock: 0
Electro-hydraulically actuated proportional directional valves type 4WRZ(E)M…
Valves of type 4WRZ(E)M… are pilot-operated proportional directional valves with spool position indicator. They control the flow direction and size. They are actuated by the proportional solenoids of the pilot control valve.
Set-up:
The valve basically consists of:
Pilot control valve (10) with proportional solenoids (5) and (6) Main valve (11) with main control spool (12), valve spring (13) and position indicator (14)Function:
With de-energized solenoids (5) and (6), the main control spool (12) is held in the central position by the valve spring (13). By energizing a proportional solenoid, e.g. solenoid "b" (6), the control spool (2) is moved to the right. Pilot oil enters the pressure chamber (15). The generated pressure moves the main control spool (12) proportionally to the electric input signal against the valve spring (13). This opens the connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics. Depending on the type, pilot oil is internally supplied to the pilot control valve via port P or externally via port X. When the solenoid (6) is switched off, the control spool (2) is returned into the central position by the compression springs (8) . This unloads the pressure chamber (15) towards the tank and the main control spool (12) is returned to the central position by the valve spring (13). Depending on the type, the pilot oil is returned internally from the pilot control valve to the tank via port T or externally via port Y. An optional manual override (16 and 17) allows the control spool (2) and with it the main control spool (12) to be moved.Inadvertent activation of the manual override may result in uncontrolled machine movements!
Spool position indicator
The spool positions of the main control spool are detected by the inductive position switch (14) and displayed via two switching outputs with a preset logic. If the fixedly set switching points are exceeded, the deviation from the zero position is displayed within the control spool overlap.
The switching signals can be used in a superior control for monitoring functions.
The electrical connection is implemented separately via a 4-pole connector M12x1 with two pins for signal output and two pins for voltage supply.
Area of application:
The valve may be used in machines with high safety requirements, e.g. hydraulic press control systems.
In connection with a contact shut-off, the valve complies with the requirements for safety-related components of a control according to category 1, EN ISO 13849-1:2006 The "emergency stop" command or an error detected by the machine control has to result in the switching off of the valve supply voltage.
For the valve design the basic and well-tried safety principles according to ISO 13849-2:2003, tables C1 and C2 were used.
The valves are suitable for use in safety-related parts of controls according to category 4, EN ISO 13849-1:2006. This requires the entire control to meet the requirements of category 4, EN ISO 13849-1:2006 as well as the respective requirements of the applicable standards.
Please note chapter "Safety instructions"!
Notice:
The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed.
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01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
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4 |
WRZEM |
‒ |
1X |
/ |
6E |
G24 |
K31 |
* |
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01 |
4 main ports |
4 |
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02 |
Proportional directional valve with electro-hydraulic operation, integrated electronics and switching position monitoring |
WRZEM |
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03 |
Size 10 |
10 |
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Size 16 |
16 |
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Size 25 |
25 |
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04 |
Symbols; for the possible version, see "Symbols/Circuit diagrams" |
E; E1-; E3-; W6-; W8-; W9-; EA; W6A |
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Rated flow NG10 |
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05 |
25 l/min |
25 |
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50 l/min |
50 |
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90 l/min |
85 |
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Rated flow NG16 |
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05 |
100 l/min |
100 |
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125 l/min |
125 |
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150 l/min |
150 |
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180 l/min |
180 |
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Rated flow NG25 |
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05 |
220 l/min |
220 |
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325 l/min |
325 |
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06 |
Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions) - Size 10 |
7X |
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07 |
Pilot control valve NG6 |
6E |
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08 |
Supply voltage 24 V |
G24 |
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09 |
Without manual override |
no code |
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With concealed manual override |
N9 |
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Pilot oil supply and return |
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10 |
External pilot oil supply, external pilot oil return |
no code |
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Internal pilot oil supply, external pilot oil return |
E |
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Pilot oil supply internal, pilot oil return internal |
ET |
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External pilot oil supply, internal pilot oil return |
T |
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Electrical connection |
||
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11 |
Without mating connector, with connector according to DIN EN 175301-804, separate order |
K31 |
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Electrical interface |
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12 |
Command value ±10 V |
A1 |
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Command value 4 to 20 mA |
F1 |
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13 |
Without pressure reducing valve |
no code |
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With pressure reducing valve ZDR 6 DP0-4X/40YM-W80 (fixedly set) |
D3 |
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14 |
NBR seals |
M |
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FKM seals |
V |
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15 |
Further details in the plain text |
* |
For applications outside these parameters, please consult us!
general
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Type |
4WRZEM | ||||
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Size |
10 | 16 | 25 | ||
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Installation position |
any, preferably horizontal | ||||
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Ambient temperature range |
°C |
-20 … +50 | |||
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Storage temperature range |
°C |
-20 … +80 | |||
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Weight |
kg |
9 | 13.7 | 20.9 | |
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Weight |
with "D3" |
kg |
9.5 | 14.2 | 21.4 |
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Sine test according to DIN EN 60068-2-6 |
10 cycles, 10…2000.. 10 Hz with logarithmic frequency changing speed of 1 octave/min, 5 to 57 Hz, amplitude 1.5 mm (p-p), 57 to 2000 Hz, amplitude 10g, 3 axes | ||||
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Noise test according to DIN EN 60068-2-64 |
20…2000 Hz, amplitude 0.05g2/Hz (10gRMS) 3 axes, testing time 30 min per axis | ||||
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Shock test according to DIN EN 60068-2-27 |
Half-sine 15g / 11 ms, 3 times in positive and 3 times in negative direction per axis, 3 axes | ||||
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Damp heat according to DIN EN 60068-2-30 |
Variant 2: +25 °C … +55 °C, 90 % … 97 % relative humidity, 2 cycles á 24 hours | ||||
hydraulic
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Size |
10 | 16 | 25 | |||
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Maximum operating pressure |
bar |
350 | ||||
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Maximum operating pressure |
Port P |
bar |
315 | 350 | ||
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Port A |
bar |
315 | 350 | |||
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Port B |
bar |
315 | 350 | |||
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Operating pressure range |
External pilot oil supply |
bar |
30 … 100 | |||
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Pilot control valve without "D3", internal pilot oil return |
bar |
30 … 100 | ||||
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Internal pilot oil supply |
bar |
100 … 315 | ||||
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Maximum return flow pressure |
Port T, external pilot oil return |
bar |
315 | 250 | ||
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Port T, internal pilot oil return |
bar |
30 | ||||
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Port Y |
bar |
30 | ||||
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Maximum flow |
l/min |
170 | 460 | 870 | ||
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Pilot flow |
input signal 0 → 100% |
Port X and Y |
l/min |
3.5 | 5.5 | 7 |
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Pilot volume |
switching process 0 → 100% |
cm³ |
1.7 | 4.6 | 10 | |
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Hydraulic fluid |
see table | |||||
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Hydraulic fluid temperature range |
°C |
-20 … +80 | ||||
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preferably |
°C |
-40 … +50 | ||||
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Viscosity range |
mm²/s |
20 … 380 | ||||
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preferably |
mm²/s |
30 … 46 | ||||
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Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) |
Pilot control valve |
Class 18/16/13 according to ISO 4406 (c) | ||||
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Main valve |
Class 20/18/15 according to ISO 4406 (c) | |||||
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Hysteresis |
% |
≤ 6 | ||||
| 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. |
electrical
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Size |
10 | 16 | 25 | ||
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Voltage type |
Direct voltage | ||||
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Command value overlap |
% |
20 | |||
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Maximum solenoid current |
A |
2.5 | |||
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Maximum current consumption |
of the amplifier |
A |
1.8 | ||
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of the amplifier (impulse current) |
A |
3 | |||
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Solenoid coil resistance |
Cold value at 20 °C |
Ω |
2 | ||
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Maximum hot value |
Ω |
3 | |||
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Actuated time |
% |
100 | |||
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Maximum coil temperature 1) |
°C |
+ 150 | |||
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Protection class according to DIN EN 60529 |
IP65 (with mating connector mounted and locked) | ||||
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Power supply |
V |
24 | |||
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Supply voltage range |
V |
19.4 … 35 | |||
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Command value input |
"A1" |
V |
± 10 | ||
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Command value input range |
"F1" |
mA |
4 … 20 | ||
| 1) | Due to the surface temperatures occurring at the solenoid coils, the European standards ISO 13732-1 and EN 982 need to be adhered to. |
Spool position indicator
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Principle: |
Inductive position switch | ||
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Switching point |
Within positive valve overlap | ||
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Power supply |
V |
24 | |
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Supply voltage tolerance |
V |
± 4.8 | |
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Residual ripple |
% |
< 10 | |
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Current consumption |
without load current |
mA |
≤ 40 |
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Reverse polarity protection |
installed, max. 300 V | ||
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Outputs |
reverse polarity protected, positive switching and short-circuit-proof | ||
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Protection class according to DIN EN 60529 |
IP65 bei montierten Steckern | ||
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Duty cycle |
% |
100 | |
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Electrical connection |
M12x1, 4-pole; assignment according to DIN EN 60947-5-2 |
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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 (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620) |
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: |
|||
(measured with HLP46, ϑÖl = 40 ±5 °C)
Rated flow 25 l/min at a valve pressure differential of 10 bar
Size 10
Rated flow 50 l/min at a valve pressure differential of 10 bar
Size 10
Rated flow 85 l/min at a valve pressure differential of 10 bar
Size 10
Transition function with stepped electric input signals (ps = 50 bar)
Size 10
Rated flow 100 l/min at a valve pressure differential of 10 bar
Size 16
Rated flow 125 l/min at a valve pressure differential of 10 bar
Size 16
Rated flow 150 l/min at a valve pressure differential of 10 bar
Size 16
Rated flow 180 l/min at a valve pressure differential of 10 bar
Size 16
Transition function with stepped electric input signals (ps = 50 bar)
Size 16
Rated flow 220 l/min at a valve pressure differential of 10 bar
NG25
Rated flow 325 l/min at a valve pressure differential of 10 bar
NG25
Transition function with stepped electric input signals (ps = 50 bar)
NG25
Symbols
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With symbols E1- and W8-, the following applies: |
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P → A: qvmax |
B → T: qv/2 |
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P → B: qv/2 |
A → T: qvmax |
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With symbols E3- and W9-, the following applies: |
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P → A: qvmax |
B → T: blocked |
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P → B: qv/2 |
A → T: qvmax |
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(Differential circuit, piston top at port A) |
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Notice: |
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Pilot oil supply
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3 Switching positions |
2 Switching positions (Version ".A)" |
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Type 4WRZEM...A...
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Type 4WRZ …
External pilot oil supply, external pilot oil return The pilot oil is supplied from a separate control circuit (external). The pilot oil return is not directed into channel T of the main valve, but is separately directed to the tank via port Y (external). |
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Type 4WRZ …E…
Internal pilot oil supply, external pilot oil return
The pilot oil supply is implemented from channel P of the main valve (internally). The pilot oil return is not directed into channel T of the main valve, but is separately directed to the tank via port Y (external). In the subplate, port X is to be closed. |
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Type 4WRZEM...A.../...ET...
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Type 4WRZ …ET…
Internal pilot oil supply; internal pilot oil return
The pilot oil supply is implemented from channel P of the main valve (internally). The pilot oil is directly returned to channel T of the main valve (internally). In the subplate, ports X and Y are to be closed. |
|
Type 4WRZ …T…
External pilot oil supply, internal pilot oil return
The pilot oil is supplied from a separate control circuit (external). The pilot oil is directly returned to channel T of the main valve (internally). In the subplate, port Y is to be closed. |
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Pin assignment |
Contact |
Assignment interface "A1" |
Assignment interface "F1" |
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Power supply |
A |
24 VDC (u(t) = 19,4 ... 35 V); Imax = 2 A |
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B |
0 V |
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C |
cannot be used 1) |
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Differential amplifier input (command value) |
D |
±10 V command value; Re > 50 kΩ |
4 ...20 mA command value; Re > 100 Ω |
|
E |
Reference potential command value |
||
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F |
cannot be used 1) |
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PE |
connected to cooling element and valve housing |
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1) |
Contacts C and F must not be connected! |
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Switching position indicator
|
Pin |
Signal |
Mating connector wire colors |
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|
Power supply |
1 |
Ub = + 24 V ± 4,8 V |
brown |
|
Switching output 1 |
2 |
Switching status 0 (open): < 1.8 VDC Switching status 1 (closed): > UB-2.5 V< 1.8 VDC (Limit load Imax = 250 mA) |
white |
|
Weight |
3 |
0 V |
blue |
|
Switching output 2 |
4 |
Switching status 0 (open): < 1.8 VDC Switching status 1 (closed): > UB-2.5 V< 1.8 VDC (Limit load Imax = 250 mA) |
black |
Connection at connector
Switching logics
Size 10
Dimensions in mm
|
1 |
Main valve |
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2 |
Pilot control valve |
|
3 |
Dimension for version 4WRZM |
|
4 |
Dimension for version 4WRZEM |
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5 |
Proportional solenoid "a" |
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6 |
Proportional solenoid "b" |
|
7 |
Mating connector "A", color gray, separate order |
|
8 |
Mating connector "B", color black, separate order |
|
9 |
Mating connector according to DIN EN 175201-804, separate order |
|
9a |
Mating connector for spool position indicator, separate order |
|
10 |
Concealed manual override “N9” |
|
11 |
Plug screw for valve with one solenoid |
|
12 |
Name plate pilot control valve |
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13 |
Name plate main valve |
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14 |
Integrated electronics (OBE) |
|
15 |
"D3” pressure reducing valve |
|
16 |
Identical seal rings for ports A, B, P and T (T1) |
|
17 |
Identical seal rings for ports X and Y |
|
18 |
Space required to remove the mating connector |
|
19 |
Diversion plate |
|
20 |
Machined valve contact surface; Porting pattern according to ISO 4401-05-05-0-05 |
Recommended valve mounting screws (separate order):
4 hexagon socket head cap screws ISO 4762 - M6 x 45 - 10.9-flZn-240h-LTightening torque MA = 13.5 Nm ± 10 %, material no. R913000258 or
4 hexagon socket head cap screws ISO 4762 - M6 x 45 - 10.9Tightening torque MA = 15.5 Nm ± 10 %
Size 16
Dimensions in mm
|
1 |
Main valve |
|
2 |
Pilot control valve |
|
3 |
Dimension for version 4WRZM |
|
4 |
Dimension for version 4WRZEM |
|
5 |
Proportional solenoid "a" |
|
6 |
Proportional solenoid "b" |
|
7 |
Mating connector "A", color gray, separate order |
|
8 |
Mating connector "B", color black, separate order |
|
9 |
Mating connector according to DIN EN 175201-804, separate order |
|
9a |
Mating connector for spool position indicator, separate order |
|
10 |
Concealed manual override “N9” |
|
11 |
Plug screw for valve with one solenoid |
|
12 |
Name plate pilot control valve |
|
13 |
Name plate main valve |
|
14 |
Integrated electronics (OBE) |
|
15 |
"D3” pressure reducing valve |
|
16 |
Identical seal rings for ports A, B, P, and T |
|
17 |
Identical seal rings for ports X and Y |
|
18 |
Space required to remove the mating connector |
|
19 |
Diversion plate |
|
20 |
Machined valve contact surface; Porting pattern according to ISO 4401-07-07-0-05 |
|
21 |
Locking pin |
Recommended valve mounting screws (separate order):
2 hexagon socket head cap screws ISO 4762 - M6 x 60 - 10.9-flZn-240h-LTightening torque MA = 12.2 Nm ± 10 % , material no. R913000115
4 hexagon socket head cap screws ISO 4762 - M10 x 60 - 10.9-flZn-240h-LTightening torque MA = 58 Nm ± 20 %, material no. R913000116 or
2 hexagon socket head cap screws ISO 4762 - M6 x 60 - 10.9
Tightening torque MA = 15.5 Nm ± 10 %
4 hexagon socket head cap screws ISO 4762 - M10 x 60 - 10.9
Tightening torque MA = 75 Nm ± 20 %
NG25
Dimensions in mm
|
1 |
Main valve |
|
2 |
Pilot control valve |
|
3 |
Dimension for version 4WRZM |
|
4 |
Dimension for version 4WRZEM |
|
5 |
Proportional solenoid "a" |
|
6 |
Proportional solenoid "b" |
|
7 |
Mating connector "A", color gray, separate order |
|
8 |
Mating connector "B", color black, separate order |
|
9 |
Mating connector according to DIN EN 175201-804, separate order |
|
9a |
Mating connector for spool position indicator, separate order |
|
10 |
Concealed manual override “N9” |
|
11 |
Plug screw for valve with one solenoid |
|
12 |
Name plate pilot control valve |
|
13 |
Name plate main valve |
|
14 |
Integrated electronics (OBE) |
|
15 |
"D3” pressure reducing valve |
|
16 |
Identical seal rings for ports A, B, P, and T |
|
17 |
Identical seal rings for ports X and Y |
|
18 |
Space required to remove the mating connector |
|
19 |
Diversion plate |
|
20 |
Machined valve contact surface; Porting pattern according to ISO 4401-08-08-0-05 (ports X and Y as required) |
|
21 |
Locking pin |
Recommended valve mounting screws (separate order):
6 hexagon socket head cap screws ISO 4762 - M12 x 60 - 10.9-flZn-240h-LTightening torque MA = 100 Nm ± 20 %, material no. R913000121 or
6 hexagon socket head cap screws ISO 4762 - M12 x 60 - 10.9Tightening torque MA = 130 Nm ± 20 %
Notes for project planning, installation and commissioning
When implementing safety-related controls comply with the applicable industry-specific standards and regulations.
Due to the flexible use of valves in systems, the user has to check and ensure that the product properties comply with all functional and safety requirements of the overall system.
Make sure that there are no switching shocks and that the valve spool does not vibrate.
Valves with switching position indicator may only be installed, adjusted, commissioned and maintained by specialists trained in hydraulics and electronics.
Improper work at safety-related parts of controls may result in personal injury and damage to property!
The following applies to all work carried out at the valve:
Valves with switching position indicator must not be disassembled.
Parts of the valves must not be exchanged.
Integrated throttles must not be removed or modified.
The spool position indicator may only be adjusted by the valve manufacturer.
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