Артикул: RX7380
Directional spool valves, direct operated, with solenoid actuation WE 6…B..XD
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Description
- Size 6
- Component series 6X
- Maximum operating pressure 315 bar
- Maximum flow 60 l/min
- Area of application in accordance with the Explosion Protection Directive 2014/34/EU: I M2; II 2G
- Area of application according to technical rules EAC TR CU 012/2011: I M2; II 2G
- Type of protection valve:
– Ex h I Mb X according to EN 80079-38
– Ex h IIC T4 Gb X according to EN 80079-36 - Type of protection, solenoid coil:
– Ex db I Mb nach EN 60079-1
– Ex db IIC T4 Gb nach EN 60079-1 - Solenoid coil certified according to IECEx
Features
- 4/3-, 4/2- or 3/2-way version
- For intended use in potentially explosive atmosphere
- Porting pattern according to ISO 4401-03-02-0-05
- Wet-pin DC solenoids
- Electrical connection with individual connection and cable gland
- With manual override
Product description
Directional valves of type WE are solenoid-actuated directional spool valves. They control start, stop and direction of a flow.
The directional valves basically consist of housing (1), one or two solenoids (2), control spool (3), and one or two return springs (4).
In the de-energized condition, control spool (3) is held in the central position or in the initial position by the return springs (4) (except for impulse spools). The control spool (3) is actuated by wet-pin solenoids in hydraulic fluid (2).
For unobjectionable functioning, the hydraulic system has to be bled properly.
The force of solenoid (2) acts via plunger (5) on control spool (3) and pushes the latter from its rest position to the required end position. This enables the necessary direction of flow from P → A and B → T or P → B and A → T.
After solenoid (2) was de-excitated, the return spring (4) pushes the control spool (3) back to its rest position.
A manual override (6) allows control spool (3) to be moved without solenoid energization.
Without spring return "O" (only possible with symbols A, C and D)
This version is a directional valve with two spool positions and two solenoids without detent. In the de-energized condition, there is no defined spool position.
Without spring return, with detent "OF" (impulse spool, only possible with symbols A, C and D)
This version is a directional valve with two spool positions, two solenoids and one detent. It alternately locks the two spool positions and the solenoid therefore does not need to be permanently energized.
Notice:
For design reasons, internal leakage is inherent to the valves, which may increase over the life cycle.
Type 4WE 6 E6X/.B..NXDZ2/V
Throttle insert
The use of a throttle insert is required when, due to prevailing operating conditions, flows occur during the switching processes which exceed the performance limit of the valve.
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | ||
| WE | 6 | 6X | / | B | G24 | N | XD | Z2 | / |
| 01 | 3 main ports | 3 |
| 4 main ports | 4 | |
| 02 | Directional valve | WE |
| 03 | Size 6 | 6 |
| 04 | Symbols; for the possible version, see "Symbols/Circuit diagrams" | |
| 05 | Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions) | 6X |
| 06 | With spring return | no code |
| Without spring return | O | |
| Without spring return with detent | OF | |
| 07 | High-power solenoid, wet (wet-pin) | B |
| Voltage | ||
| 08 | Direct voltage 24 V | G24 |
| 09 | With manual override | N |
| Explosion protection | ||
| 10 | "Flameproof enclosure", for details, see "Information on the explosion protection" | XD |
| Electrical connection | ||
| 11 | Individual connection | |
| Solenoid with terminal box and cable gland, for details see "Electrical connection" | Z2 | |
| 12 | Without throttle insert | no code |
| Throttle Ø 0.8 mm | B08 | |
| Throttle Ø 1.0 mm | B10 | |
| Throttle Ø 1.2 mm | B12 | |
| Use with flows which exceed the performance limit of the valve, see "Product description" | ||
| Seal material (observe compatibility of seals with hydraulic fluid used, see "Technical data") | ||
| 13 | NBR seals | no code |
| FKM seals | V | |
| Special version | ||
| 14 | Without | no code |
| Reinforced compression spring (symbol X36A only) | SO99 | |
Notice:
The manual override cannot be allocated a safety function and may only be used up to a tank pressure of 50 bar.
Technical data
general
| Size | 6 | ||
| Installation position | any | ||
| Ambient temperature range | °C | -20 … +80 | |
| Storage temperature range | °C | +5 … +40 | |
| Maximum storage time | yrs | 1 | |
| Weight | Valve with one solenoid | kg | 5.3 |
| Valve with two solenoids | kg | 9.4 | |
| Surface protection | Galvanized | ||
| Maximum admissible acceleration amax | g | 10 | |
hydraulic
| Size | 6 | ||
| Maximum operating pressure | Port P | bar | 315 |
| Port A | bar | 315 | |
| Port B | bar | 315 | |
| Port T 1) | bar | 210 | |
| Maximum flow | l/min | 60 | |
| Hydraulic fluid | see table "Hydraulic fluid" | ||
| Hydraulic fluid temperature range | NBR seals | °C | -20 … +80 |
| FKM seals | °C | -15 … +80 | |
| Viscosity range | mm²/s | 2.8 … 500 | |
| Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2) | Class 20/18/15 | ||
| 1) | With symbols A and B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure. |
| 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 fluid | Classification | Suitable sealing materials | Standards | data sheet | |
| Mineral oils | HL, HLP, HLPD | NBR, FKM | DIN 51524 | 90220 | |
| Bio-degradable | Insoluble in water | HETG | FKM | ISO 15380 | 90221 |
| HEES | FKM | ||||
| Soluble in water | HEPG | FKM | ISO 15380 | ||
| Flame-resistant | Containing water | HFC (Fuchs: Hydrotherm 46M, Renosafe 500; | NBR | ISO 12922 | 90223 |
|
Important information on hydraulic fluids:
| |||||
electrical
| Voltage type | Direct voltage | ||
| Nominal voltage according to VDE 0580 | V | 24 | |
| Voltage tolerance (nominal voltage) | % | ± 10 | |
| Admissible residual ripple | % | < 5 | |
| Duty cycle/operating mode according to VDE 0580 | S1 (continuous operation) | ||
| Switching time according to ISO 6403 | ON | ms | 30 … 70 |
| OFF | ms | 20 … 30 | |
| Maximum switching frequency | 1/h | 15000 | |
| Nominal power with ambient temperature 20 °C | W | 13 | |
| Maximum power with 1.1 x nominal voltage and an ambient temperature of 20 °C | W | 15.8 | |
| Protection class according to EN 60529 | IP65 (If a suitable and a correctly mounted mating connector are used.) | ||
Information on explosion protection – Directive 2014/34/EU
| Area of application | I M2 | II 2G | |
| Type of protection of the valve according to EN 80079-36 / EN 80079-38 | Ex h I Mb X | Ex h IIC T4 Gb X | |
| Type of protection valve solenoid according to EN 60079-1 | Ex db I Mb | Ex db IIC T4 Gb | |
| Maximum surface temperature 1) | °C | 105 | |
| Temperature class | - | T4 | |
| Type examination certificate solenoid | BVS 03 ATEX E 300 X | ||
| "IECEx Certificate of Conformity" solenoid | IECEx BVS 1191 X | ||
| 1) | Surface temperature > 50 °C, provide contact protection. |
Information on explosion protection – Technical rules EAC TR CU 012/2011
| Area of application | I M2 | II 2G | |
| Type of protection marking of valve | PB Ex d Mb / I Mb c | 1Ex d IIC T4 Gb / II Gb c II T4 | |
| Maximum surface temperature 1) | °C | 105 | |
| Temperature class | - | T4 | |
| Certificate of conformity | No TC RU C-DE.ГБ08.В.02161 | ||
| 1) | Ex h: structural safety c according to EN 80079-37. |
Special application conditions for a safe application :
- Connection lines must be passed in a strain-relieved way. The first mounting point must be within 150 mm of the cable and line entry.
- In order to avoid dangers caused by static charge, the base and/or subplate on which the valve is to be fitted must be electrically conductive and included in the equipotential bonding.
- The valve solenoid must not be installed close to charge generating processes.
- Contact of the connection cable with the casing surface is to be prevented.
- In case of bank assembly, only one solenoid of all valves may be energized at a time.
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C and p = 100 bar)
Δp-qV characteristic curves
Δp-qV characteristic curves
Δp-qV characteristic curves
| Symbol | Direction of flow | |||||
| P – A | P – B | A – T | B – T | B – A | P – T | |
| A, B | 3 | 3 | – | – | – | – |
| C | 1 | 1 | 3 | 1 | – | – |
| D, Y, Y2 | 5 | 5 | 3 | 3 | – | – |
| E | 3 | 3 | 1 | 1 | – | – |
| F | 1 | 3 | 1 | 1 | – | – |
| T | 10 | 10 | 9 | 9 | – | 8 |
| H | 2 | 4 | 2 | 2 | – | 9 |
| J, Q | 1 | 1 | 2 | 1 | – | – |
| L | 3 | 3 | 4 | 9 | – | – |
| M | 2 | 4 | 3 | 3 | – | – |
| P | 3 | 1 | 1 | 1 | – | – |
| R | 5 | 5 | 4 | – | 7 | – |
| V | 1 | 2 | 1 | 1 | – | – |
| W | 1 | 1 | 2 | 2 | – | – |
| U | 3 | 3 | 9 | 4 | – | – |
| G | 6 | 6 | 9 | 9 | – | 8 |
| B9 | 11 | 11 | – | – | – | – |
| H19 | 13 | 13 | 12 | 12 | 14 | – |
| J19 | 13 | – | 15 | 12 | – | – |
| X36A | 16 | – | 17 | 18 | – | – |
| D9 | 8 | 19 | 8 | 14 | – | – |
| E41 | 19 | 19 | 8 | 8 | – | – |
| X36A…SO99 | 21 | – | 20 | 22 | – | – |
Performance limits
(measured with HLP46, ϑOil = 40 ±5 °C)
Notice:
The specified performance limits are valid for operation with two directions of flow (e.g. from P to A and simultaneous return flow from B to T).
Due to the flow forces acting within the valves, the possible performance limit may be considerably lower with only one direction of flow (e.g. from P to A while port B is blocked).
The performance limits were determined when the solenoids were at operating temperature, at 10% undervoltage and without tank preloading.
| Characteristic curve | Symbol |
| 1 | A, B |
| 2 | J, L, U |
| 3 | V |
| 4 | F, P |
| 5 | A/O, A/OF |
| 6 | G |
| 7 | T |
| 8 | R 2) |
| 9 | E |
| 10 | Q, W |
| 11 | D, C, Y, Y2 |
| 12 | H |
| 13 | M |
| 14 | E1 1), D/OF, C/OF, D/O, C/O |
| 1) | P – A/B pre-opening |
| 2) | Return flow from actuator to tank |
| Characteristic curve | Symbol |
| 15 | B9 |
| 16 | H19 |
| 17 | J19, P-A |
| 18 | J19, A-T |
| 19 | J19, B-T |
| 20 | X36A |
| 21 | D9 |
| 22 | E41 |
| 23 | X36A…SO99 |
Symbols/Circuit diagrams
| 1) | Example: Symbol E with spool position "a" → ordering code ..EA.. |
| 2) | Symbol E1-: P – A/B pre-opening, Due to pressure intensification, not suitable for use indifferential cylinders. |
Notice:
Representation according to ISO 1219-1.
Hydraulic interim positions are shown by dashes.
Electrical connection
The type-examination tested valve solenoid is equipped with a terminal box and a type-tested cable and line entry.
The connection is polarity-independent.
Properties of the connection terminals and mounting elements
| Position | Function | Connectable line cross-section |
| 1 | Operating voltage connection | Single-wire 0.75 … 2.5 mm2 Finely stranded,0.75 … 1.5 mm2 |
| 2 | Connection for protective earthing conductor | Single-wire 2.5 mm2 max. Finely stranded, 1.5 mm2 max. |
| 3 | Connection for potential equalization conductor | Single-wired, 4 … 6 mm2 Finely stranded, min. 4 mm2 |
Connection line
| Line type | Non-armored cables and lines (outer sheath sealing) | |
| Temperature range | °C | -20 … ≥ +110 |
| Line diameter | mm | 6.1 ... 11.7 |
| Direct voltage, polarity-independent |
 |
Notice:
Only use finely stranded conductors if they have pressed-on wire end ferrules.
Over-current fuse and switch-off voltage peaks
| Voltage data in the valve type code | Nominal voltage valve solenoid | Rated current valve solenoid | Recommended pre-fuse characteristic: medium time-lag according to DIN 41571 | Maximum voltage value when switching off | Interference protection circuit |
| G24 | 24 VDC | 0.542 ADC | 630 mA | –90 V | Suppressor diode bi-directional |
Notices:
A fuse which corresponds to the rated current according to DIN 41571 and EN/IEC 60127 has to be connected upstream of every valve solenoid (max. 3 x Irated).
The shut-off threshold of the fuse has to match the prospective short-circuit current of the supply source.
The short-circuit current of the supply source to be expected may amount to a maximum of 1500 A.
This fuse may only be installed outside the potentially explosive atmosphere or must be of an explosion-proof design.
When inductivities are switched off, voltage peaks result which may cause faults in the connected control electronics.
Dimensions
Dimensions in mm
 |
| Required surface quality of the valve contact surface |
| 1 | Solenoid |
| 2 | Terminal box |
| 3 | Manual override "N" |
| 4 | Identical seal rings for ports P, A, B, T |
| 5 | Plug screw for valves with one solenoid |
| 6 | Name plate of valve |
| 7 | Porting pattern according to ISO 4401-03-02-0-05 |
| 8 | Name plate sticker |
Valve mounting screws (separate order)
| Size | Quantity | Hexagon socket head cap screws | Material number |
| 6 | 4 | ISO 4762 - M5 x 50 - 10.9 (Friction coefficient μtotal = 0.09 … 0.14) Tightening torque MA = 7 Nm ±10 % | R913043758 |
| Only use valve mounting screws with the listed thread diameters and strength properties. Observe the screw-in depth. |
Subplates (separate order) with porting pattern according to ISO 4401-03-02-0-05, see data sheet 45100.
Notices:
- Subplates are no components in the sense of directive 2014/34/EU and can be used after the manufacturer of the overall system has conducted an assessment of the risk of ignition. The "G...J3" versions are free from aluminum and/or magnesium and galvanized.
- The dimensions are nominal dimensions which are subject to tolerances.
Installation conditions
(Dimensions in mm)
|
| Individual assembly | Bank assembly |
| Subplate dimensions | Minimum dimensions: | Minimum cross-section: |
| Thermal conductivity of the subplate | ≥ 36.2 W/mK | |
| Minimum distance between the longitudinal valve axes | see below | |
Dimensions in mm
Notice:
In case of bank assembly, only one solenoid of all valves may be energized at a time.
Accessories
Subplates
Subplates
Downloads
 | Directional spool valves, direct operated, with solenoid actuation Manual | RE23178-XD-B | 2021-11-01 | English | PDF | 1.6MB Product Groups: Industrial Hydraulics Type WE6..6X/...XD... |
| Directional spool valves, direct operated, with solenoid actuation Data Sheet | RE23178-XD | 2021-12-01 | English | PDF | 689k Product Groups: Directional spool valves Type WE …XD |
| Explosion-protected hydraulic products for industrial and mobile applications Brochure | R999000373 | 2017-03-01 | English | PDF | 5.8MB Product Groups: Pumps, CD - single rod cylinder, Proportional, high-response and servo valves, Axial piston pumps, Mobile controls Product overview |
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