Артикул: RX7612
4/3 proportional directional valves, direct operated, with pQ functionality 4WREQ
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Description
- Size 6, 10
- Component series 2X
- Maximum operating pressure 315 bar
- Maximum flow 180 l/min
Features
- Direct operated proportional directional valve with integrated digital control electronics for the pressure, force and flow control (Integrated Axis Controller IAC-P)
- Completely adjusted unit consisting of valve, pressure sensor(s) (optional), digital control electronics and field bus connection
- Operation by means of proportional solenoids with central thread and detachable coil
- Valve control spool, position-controlled
- Integrated pressure sensor plate (optional)
- For subplate mounting: Porting pattern according to ISO 4401
- Analog interface for command and actual value
- Design for CAN bus with CANopen protocol DS 408 or Profibus-DP
- Quick commissioning via PC and WIN-PED 6 commissioning software
Product description
Set-up:
Valve with integrated sensors:
The valve basically consists of:
- Housing (1) and pressure sensor plate (12) with connection surface
- Control spool (2) with compression springs (3 and 4) and spring plates (8 and 9)
- Coils (5 and 6) and pole tubes (14 and 15) with central thread
- Position transducer (7)
- Integrated pressure sensors (10)
- Integrated digital control electronics IAC-P (11)
- With de-energized solenoids (5 and 6), the control spool (2) is brought into the central position by compression springs (3 and 4) between the spring plates (8 and 9) (with V spool valve without spring plate). With V spool valves, the mechanical zero position does not correspond to the hydraulic one.
- Depending on the valve type, the following functions result (some of them can be combined):
- Flow control (Q)
- Flow control (Q)
- Pressure control in A and/or B (p)
- Force control (p)
- Substitutional control p/Q
- The command value presetting can alternatively be specified via an analog interface (X1) or via the field bus interface (X2, X3).
- The actual value signals are provided via an analog interface (X1) and can additionally be read out via the field bus (X2, X3).
- The controller parameters are set via the field bus
- Separate supply voltage for bus/controller and power part (output stage) for safety reasons
- Cable break pressure sensor (10)
- Undervoltage
- Cable break position transducer (7)
- Communication error
- Watchdog
- Cable break command value inputs (only with current interface)
- Ramp generator
- Internal command value profile
- Enable function analog / digital
- Error output 24 V
- Parameterization
- Diagnosis
- Comfortable data management on a PC
- IBM PC or compatible system
- Windows 2000 or Windows XP
- RAM (recommendation: 256 MB)
- 150 MB of available hard disk capacity
- The "WIN-PED 6" PC program is not included in the scope of delivery. It is available for free download!
Functional description
The digital integrated control electronics enables the following error detection:
The following additional functions are available:
PC program WIN-PED 6
To implement the project planning task and to parameterize the IFB-P valves, the user may use the WIN-PED commissioning software.
System requirements
Notice
4WREQ 6 with integrated pressure sensors
Set-up:
Valve for external sensor:
The valve basically consists of:
- Housing (1) with connection surface
- Control spool (2) with compression springs (3 and 4) and spring plates (8 and 9)
- Coils (5 and 6) and pole tubes (14 and 15) with central thread
- Position transducer (7)
- Integrated digital control electronics IAC-P (11)
- Port (X4) for an external pressure sensor (12)
- With de-energized solenoids (5 and 6), the control spool (2) is brought into the central position by compression springs (3 and 4) between the spring plates (8 and 9) (with V spool valve without spring plate). With V spool valves, the mechanical zero position does not correspond to the hydraulic one.
- Functions:
- Flow control (Q)
- Pressure control (p)
- Substitutional control p/Q
- The command value presetting can alternatively be specified via an analog interface (X1) or via the field bus interface (X2, X3).
- The actual value signals are provided via an analog interface (X1) and can additionally be read out via the field bus (X2, X3).
- The controller parameters are set via the field bus
- Separate supply voltage for bus/controller and power part (output stage) for safety reasons
- Cable break pressure sensor (depending on sensor interface)
- Undervoltage
- Cable break position transducer (7)
- Communication error
- Watchdog
- Cable break command value inputs (only with current interface)
- Ramp generator
- Internal command value profile
- Enable function analog / digital
- Error output 24 V
- Parameterization
- Diagnosis
- Comfortable data management on a PC
- IBM PC or compatible system
- Windows 2000 or Windows XP
- RAM (recommendation: 256 MB)
- 150 MB of available hard disk capacity
- The "WIN-PED 6" PC program is not included in the scope of delivery. It is available for free download!
Functional description
The digital integrated control electronics enables the following error detection:
The following additional functions are available:
PC program WIN-PED 6
To implement the project planning task and to parameterize the IFB-P valves, the user may use the WIN-PED commissioning software.
System requirements
Notice
4WREQ 6 for external pressure sensor
Important notice:
The PG fitting (13) must not be opened. Mechanical adjustment of the adjustment nut located below is prohibited and damages the valve!
Notice!
Due to the design principle, internal leakage is inherent to the valves, which may increase over the life cycle. The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve must be installed.
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | |||
| 4 | WRE | Q | ‒ | 2X | / | V | ‒ | 24 | * |
| 01 | 4 main ports | 4 |
| 02 | Proportional directional valve with electrical position feedback | WRE |
| 03 | With integrated digital electronics and pQ functionality | Q |
| 04 | Size 6 | 6 |
| Size 10 | 10 | |
| 05 | Symbols; for the possible version, see "Symbols/Circuit diagrams" | Q5-; V |
| Rated flow NG6 | ||
| 06 | 8 l/min | 8 |
| 16 l/min | 16 | |
| 32 l/min | 32 | |
| Rated flow NG10 | ||
| 06 | 25 l/min | 25 |
| 50 l/min | 50 | |
| 75 l/min | 75 | |
| 07 | Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) | 2X |
| Seal material | ||
| 08 | FKM seals | V |
| Pressure rating with internal sensors | ||
| 09 | 100 bar | 4 1) |
| 160 bar | 5 1) | |
| 250 bar | 8 1) | |
| 400 bar | B 2) | |
| external sensor | 0 | |
| Position of the pressure sensors | ||
| 10 | external sensor | 0 |
| Internal sensor in the channel | ||
| A (p closed-loop control only in A) | A | |
| B (p closed-loop control only in B) | B | |
| A + B (p closed-loop control in A+B or Δp closed-loop control) | C | |
| P + A + B (Q closed-loop control) | F | |
| 11 | Supply voltage 24 V | 24 |
| Bus interface | ||
| 12 | CANBus DS 408 | C |
| Profibus DP V0/V1 | P | |
| Electrical interface | ||
| 13 | Command value ±10 V | A6 3) |
| Command value 4 to 20 mA | F6 3) | |
| Sensor interface with external pressure sensor 4) | ||
| 14 | 4 ... 20 mA | 2 |
| 0 ... 10 V | 3 | |
| 0 ... 5 V | 4 | |
| 0,5 ... 5 V | 9 | |
| Without external sensor interface | 0 | |
| 15 | Further details in the plain text | * |
| 1) | The selected pressure rating limits the maximum valve pressure | |
| 2) | Please note: Maximum valve pressure is 315 bar | |
| 3) | If internal pressure sensors are used, no external pressure sensor can be connected | |
| 4) | With command value input "A6", only the sensor interfaces "3", "4" or "9" are possible With command value input "F6", only the sensor interface "2" is possible | |
Technical data
general
| Type | 4WREQ | |||
| Size | 6 | 10 | ||
| Installation position | any, preferably horizontal | |||
| Ambient temperature range | °C | -20 … +50 | ||
| Storage temperature range | °C | -20 … +80 | ||
| Weight | withsandwich plate (3 sensors) | kg | 3.6 | 8.5 |
| without sandwich plate | kg | 2.4 | 6.5 | |
hydraulic
| Size | 6 | 10 | ||
| Maximum operating pressure | bar | 315 | ||
| Maximum operating pressure | Port P (sensor 100 bar) | bar | 100 | |
| Port P (sensor 160 bar) | bar | 160 | ||
| Port P (sensor 250 bar) | bar | 250 | ||
| Port P (sensor 400 bar) | bar | 315 | ||
| Port T (sensor 100 bar) | bar | 100 | ||
| Port T (sensor 160 bar) | bar | 160 | ||
| Port T (sensor 250 bar) | bar | 210 | ||
| Port T (sensor 400 bar) | bar | 210 | ||
| Port A (sensor 100 bar) | bar | 100 | ||
| Port A (sensor 160 bar) | bar | 160 | ||
| Port A (sensor 250 bar) | bar | 250 | ||
| Port A (sensor 400 bar) | bar | 315 | ||
| Port B (sensor 100 bar) | bar | 100 | ||
| Port B (sensor 160 bar) | bar | 160 | ||
| Port B (sensor 250 bar) | bar | 250 | ||
| Port B (sensor 400 bar) | bar | 315 | ||
| Maximum flow | l/min | 80 | 180 | |
| Nominal flow | l/min | 8 16 32 | 25 50 75 | |
| Hydraulic fluid | see table | |||
| Hydraulic fluid temperature range | °C | -20 … +70 | ||
| preferably | °C | +40 … +50 | ||
| Viscosity range | mm²/s | 20 … 380 | ||
| preferably | mm²/s | 30 … 46 | ||
| 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 | % | ≤ 0.1 | ||
| Range of inversion | % | ≤ 0.05 | ||
| Response sensitivity | % | ≤ 0.05 | ||
| Zero shift upon change of | Hydraulic fluid temperature | %/10 K | < 0.15 | |
| Operating pressure | %/100 bar | < 0.1 | ||
| 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. |
| Hydraulic fluid | Classification | Suitable sealing materials | Standards |
| Mineral oils and related hydrocarbons | HL, HLP | 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. 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: | |||
electrical
| Size | 6 | 10 | ||
| Voltage type | Direct voltage | |||
| Maximum current consumption | of the amplifier | A | 2 | |
| of the amplifier (impulse current) | A | 3 | ||
| Maximum current | Output stage | A | 1.7 | |
| Signal part | A | 0.3 | ||
| Actuated time 1) | % | 100 | ||
| Maximum coil temperature 2) | °C | 150 | ||
| Protection class according to DIN EN 60529 | IP65 (If a suitable and a correctly mounted mating connector are used.) | |||
| Converter resolution (command/actual value signals) | bits | 10 | ||
| Power supply | V | 24 | ||
| Supply voltage range | V | 19,4 … 35 | ||
| Earthing (GND) | V | 0 | ||
| Enable input range | "A6" | V | 9 … 35 | |
| "F6" | V | 9 … 35 | ||
| Command value input | UQ "A6" | mA | 10 | |
| Command value input range | UP "A6" | mA | 0 … 10 | |
| IQ and IP "F6" | mA | 4 … 20 | ||
| Actual value output | UQ "A6" | V | ± 10 | |
| Actual value output range | UP "A6" | mA | 0 … 10 | |
| IQ and IP "F6" | mA | 4 … 10 | ||
| Control voltage | Level as for pin 1 | |||
| 0 V reference potential | For pins 3, 6, 8 and 11 (connected to pin 2 in valve) | |||
| Error output | 24 V (19.4 V to 35 V), 200 mA maximum load | |||
| 1) | Connect the valve to the supply voltage only when this is required for the functional sequence of the machine. |
| 2) | Due to the surface temperatures occurring at solenoid coils, the European standards ISO 13732-1 and ISO 4413 need to be adhered to. |
Sensor technology
| Overload protection | Sensor 100 bar | bar | 200 |
| Sensor 160 bar | bar | 320 | |
| Sensor 250 bar | bar | 500 | |
| Sensor 400 bar | bar | 800 | |
| Bursting pressure | Sensor 100 bar | bar | 400 |
| Sensor 160 bar | bar | 640 | |
| Sensor 250 bar | bar | 1000 | |
| Sensor 400 bar | bar | 1600 | |
| Characteristic curve deviation | % | < 0.2 | |
| Hysteresis | % | < 0.1 | |
| Repetition accuracy | % | < 0.05 | |
| Long-term drift (1 year) under reference conditions | % | < 0.2 | |
Diagrams/characteristic curves
(measured with HLP46, ϑÖl = 40 ±5 °C)
Pressure-signal characteristic curve (control spool Q5), ps = 100 bar
NG6
Pressure-signal characteristic curve (symbol V; measured with ps = 100 bar)
NG6
Flow; control spool Q5
NG6
Flow; control spool V
NG6
Load function with maximum valve opening; control spool Q5
NG6
Load function with maximum valve opening; control spool V
NG6
Transition function with stepped electric input signals
NG6
Frequency response (control spool Q5), ps = 10 bar)
NG6
Frequency response (control spool V), ps = 10 bar)
NG6
Pressure-signal characteristic curve (control spool Q5), ps = 100 bar
NG10
Pressure-signal characteristic curve (symbol V; measured with ps = 100 bar)
NG10
Flow; control spool Q5
NG10
Flow; control spool V
NG10
Load function with maximum valve opening; control spool Q5
NG10
Load function with maximum valve opening; control spool V
NG10
Transition function with stepped electric input signals
NG10
Frequency response (control spool Q5), ps = 10 bar)
NG10
Frequency response (control spool V), ps = 10 bar)
NG10
Symbols/Circuit diagrams
Symbols
Type 4WREQ.Q5-...
Type 4WREQ.V-...
Electrical connection
load errorDimensions
4WREQ 6 with integrated pressure sensors
Dimensions in mm
| 1 | Valve housing |
| 2 | Proportional solenoid "a" with inductive position transducer |
| 3 | Proportional solenoid "b" |
| 4 | R-ring 9.81 x 1.5 x 1.78 (ports P, A, B, T) |
| 5 | Space required to remove the mating connector |
| 6 | Integrated digital control electronics |
| 7 | Mating connector according to DIN EN 175201-804, separate order |
| 8 | Name plate |
| 9 | Integrated pressure transducer |
| 10 | Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) |
4WREQ 6 for external pressure sensor
Dimensions in mm
| 1 | Valve housing |
| 2 | Proportional solenoid "a" with inductive position transducer |
| 3 | Proportional solenoid "b" |
| 4 | R-ring 9.81 x 1.5 x 1.78 (ports P, A, B, T) |
| 5 | Space required to remove the mating connector |
| 6 | Integrated digital control electronics |
| 7 | Mating connector according to DIN EN 175201-804, separate order |
| 8 | Name plate |
| 9 | Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) |
Recommended valve mounting screws (separate order):
for valves with integrated pressure sensors:
4 hexagon socket head cap screws ISO 4762 - M5 x 90 - 10.9-flZn-240h-L
Tightening torque MA = 7 Nm ± 10 %, material no. R913000222
for valves with external pressure sensor:
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
Tightening torque MA = 7 Nm ± 10 %, material no. R913000064 or
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9
Tightening torque MA = 8.9 Nm ± 10 %
4WREQ 10 with integrated pressure sensors
Dimensions in mm
| 1 | Valve housing |
| 2 | Proportional solenoid "a" with inductive position transducer |
| 3 | Proportional solenoid "b" |
| 4 | R-ring 13.0 x 1.6 x 2.0 (ports P, A, B, T, T1) |
| 5 | Space required to remove the mating connector |
| 6 | Integrated digital control electronics |
| 7 | Mating connector according to DIN EN 175201-804, separate order |
| 8 | Name plate |
| 9 | Integrated pressure transducer |
| 10 | Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 |
4WREQ 10 for external pressure sensor
Dimensions in mm
| 1 | Valve housing |
| 2 | Proportional solenoid "a" with inductive position transducer |
| 3 | Proportional solenoid "b" |
| 4 | R-ring 13.0 x 1.6 x 2.0 (ports P, A, B, T, T1) |
| 5 | Space required to remove the mating connector |
| 6 | Integrated digital control electronics |
| 7 | Mating connector according to DIN EN 175201-804, separate order |
| 8 | Name plate |
| 9 | Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 |
Recommended valve mounting screws (separate order):
for valves with integrated pressure sensors:
4 hexagon socket head cap screws ISO 4762 - M6 x 80 - 10.9-flZn-240h-L
Tightening torque MA = 12.5 Nm ± 10 %, material no. R913000512 or
4 hexagon socket head cap screws ISO 4762 - M6 x 80 - 10.9
Tightening torque MA = 15.5 Nm ± 10 %
for valves with external pressure sensor:
4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
Tightening torque MA = 12.5 Nm ± 10 %, material no. R913000058 or
4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9
Tightening torque MA = 15.5 Nm ± 10 %
Notice:
The dimensions are nominal dimensions which are subject to tolerances.
Project planning information
load errorDownloads
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