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4/2 and 4/3 proportional directional valves, direct operated, without electrical position feedback, without integrated electronics (OBE) 4WRA 6../..XE
4/2 and 4/3 proportional directional valves, direct operated, without electrical position feedback, without integrated electronics (OBE) 4WRA 6../..XE
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Size 6
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Component series 2X
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Maximum operating pressure 315 bar
-
Maximum flow 22 l/min
Size 6
Component series 2X
Maximum operating pressure 315 bar
Maximum flow 22 l/min
|
Type |
4WRA | ||
|
Size |
6 | ||
|
Installation position |
any, preferably horizontal | ||
|
Ambient temperature range |
°C |
-20 … +60 | |
|
Storage temperature range |
°C |
-20 … +50 | |
|
Weight |
kg |
4.4 | |
|
Weight |
with one solenoid |
kg |
2.7 |
|
Surface protection |
Galvanized | ||
hydraulic
|
Size |
6 | |||
|
Maximum operating pressure |
bar |
315 | ||
|
Maximum operating pressure |
Port P |
bar |
315 | |
|
Port T |
bar |
210 | ||
|
Port A |
bar |
315 | ||
|
Port B |
bar |
315 | ||
|
Maximum flow |
l/min |
22 | ||
|
Nominal flow |
l/min |
6 10 18 |
||
|
Hydraulic fluid |
Mineral oil (HL, HLP) according to DIN 51524; other hydraulic fluids upon request; ignition temperature > 180 °C | |||
|
Hydraulic fluid temperature range |
NBR seals |
°C |
-20 … +80 | |
|
FKM seals |
°C |
-15 … +80 | ||
|
Viscosity range |
mm²/s |
15 … 380 | ||
|
preferably |
mm²/s |
30 … 46 | ||
|
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) |
Class 17/15/12 according to ISO 4406 (c) | |||
|
Hysteresis |
% |
≤ 6 | ||
|
Range of inversion |
% |
≤ 2 | ||
|
Response sensitivity |
% |
≤ 1 | ||
| 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
|
Size |
6 | ||
|
Voltage type |
Direct current or pulse-width modulated signal with a pulse voltage ≤ 28 V and a frequency ≥ 160 Hz up to max. 500 Hz | ||
|
Type of signal |
analog | ||
|
Maximum solenoid current |
A |
1.03 | |
|
Actuated time |
% |
100 | |
|
Maximum coil temperature |
°C |
+ 125 | |
Control electronics
|
Amplifier module for the control of explosion-proof proportional directional valves |
VT-MSPA2-200-1X/V0/0 |
|
Module for monitoring and limiting the solenoid currents with proportional valves |
VT-MUXA2-2-1X/V0/1A |
|
Notice: |
|
Information on explosion protection
|
Application according to Explosion Protection Directive 2014/34/EU |
II 2G | |
|
Type of protection of the valve according to EN 13463-1/ EN 13463-5 |
c T4 X | |
|
Valve solenoid type of protection according to EN 60079-7/ EN 60079-18 1) |
Ex e mb IIC T4 Gb | |
|
Type examination certificate solenoid |
KEMA 02ATEX2240 X | |
|
“IECEx Certificate of Conformity” for solenoid |
IECEx DEK 12.0068X | |
|
Special application conditions for a safe application |
– In case of bank assembly, only one solenoid of all valves may be energized at a time. ‒ In case of valves with two solenoids, only one of the solenoids may be energized at a time. ‒ Only direct current or a pulse-width modulated signal with a pulse voltage ≤ 28 V and frequency ≥ 160 Hz up to max. 500 Hz may be used. |
|