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0811402173

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MATERIAL:  0811402173

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Valves of type ZDRE... are pilot-operated pressure reducing valve in sandwich plate design and 3-way version, i. e. with pressure limitation of the actuator pressure. They are used for reducing a system pressure.

They mainly consist of pilot control component (1) with proportional solenoid (2), main valve (3) and control spool (4). The pressure in channel P1 is set in a command value-dependent form via the proportional solenoid (2). In rest position, i. e. without pressure in channel P2, the control spool (4) opens the connection from channel P2 to P1. The pressure in channel P1 acts on the spool face (6) via the bore (5). The pilot oil for the pilot valve is taken from channel P1 and flows via the bore (5) and the nozzle (7) into the spring chamber (8). From there, it flows back to the tank via the valve seat (9), the bore (10) and the Y line. The pressure required in channel P1 is preset at the related amplifier. The proportional solenoid moves the valve poppet (11) in the direction of the valve seat (9) and increases the pressure in the spring chamber (8). In this way, the two chambers (6) and (8) are pressure-compensated and the compression spring (12) moves the piston (4) to the right in opening direction P2 to P1. As soon as the actuator pressure P1 has increased to the value set at the pilot valve, the valve poppet (11) opens and limits the pressure in the spring chamber (8). The control spool (4) now moves to the left in control position. If the actuator pressure P1 exceeds the value set at the pilot valve, the control spool is moved further to the left. It blocks the flow from P2 to P1 and opens the connection from P1 to tank TA1 at the control edge (13) until the pressure has dropped again to the set value.

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Valves of type ZDREE... are pilot-operated pressure reducing valves in sandwich plate design and 3-way version, i. e. with pressure limitation of the actuator pressure. They are used for reducing a system pressure.

They mainly consist of pilot control component (1) with proportional solenoid (2), main valve (3) and control spool (4). The control electronics (OBE) in the housing (14) maintain the supply and command value voltage via the mating connector. At the factory, the command value pressure characteristic curve is adjusted with little manufacturing tolerance. The pressure in channel P1 is set in a command value-dependent form via the proportional solenoid (2). In rest position, i. e. without pressure in channel P2, the control spool (4) opens the connection from channel P2 to P1. The pressure in channel P1 acts on the spool face (6) via the bore (5). The pilot oil for the pilot valve is taken from channel P1 and flows via the bore (5) and the nozzle (7) into the spring chamber (8). From there, it flows back to the tank via the valve seat (9), the bore (10) and the Y line. The pressure required in channel P1 is preset at the related

amplifier. The proportional solenoid moves the valve poppet (11) in the direction of the valve seat (9) and increases the pressure in the spring chamber (8). In this way, the two chambers (6) and (8) are pressure-compensated and the compression spring (12) moves the piston (4) to the right in opening direction P2 to P1. As soon as the actuator pressure P1 has increased to the value set at the pilot valve, the valve poppet (11) opens and limits the pressure in the spring chamber (8). The control spool (4) now moves to the left in control position. If the actuator pressure P1 exceeds the value set at the pilot valve, the control spool is moved further to the left. It blocks the flow from P2 to P1 and opens the connection from P1 to tank TA1 at the control edge (13) until the pressure has dropped again to the set value.

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pilot oil supply for the upstream directional valve

Notice:- With the direct operated directional valve, there is no sealing for ports X and Y at the connection surface of the housing. To ensure that no hydraulic fluid leaks, the pilot oil supply from P2 to X and the pilot oil return between directional valve and ZDRE(E) has to be closed (version XL).- Leakage caused by the control spool play from P to B can lead to a pressure build-up in port B!- A pilot-operated proportional directional valve in connection with ZDRE(E) has to have an external pilot oil supply.

With versions XY and XL, the connection between P2 and X is closed

With versions Y and L, port X in the subplate must be closed.

Type ZDRE(E) 10...2X/...XY

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE(E) 10...2X/...Y

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE(E) 10...2X/...XL

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE(E) 10...2X/...L

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE
technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE
technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

Z

DRE

10

VP

2

-

2X

/

M

G24

*

01

Sandwich plate

Z

02

Proportional pressure reducing valve

DRE

03

For external analog electronics

no code

With integrated control electronics

E

Size

04

Size 10

10

05

Pressure reduction in channel P

VP

06

Preferred position of mating connector

2

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN 24340 form A and ISO 4401 4 pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

The mating connector can be brought to the desired position when the nut was loosened

07

Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) - Size 6

2X

Pressure rating

08

Up to 50 bar

50

Up to 100 bar

100

Up to 200 bar

200

Up to 315 bar

315

Pilot oil supply and return

09

Pilot oil supply for the directional valve from port P2, external pilot oil return for the directional valve and ZDRE

Y

External pilot oil supply for the directional valve, external pilot oil return for the directional valve and ZDRE

XY

Pilot oil supply for the directional valve from port P2, internal pilot oil return for the directional valve and external pilot oil return for ZDRE

L

Pilot oil supply from P2 to X is closed (direct actuated directional valve does not require pilot oil), pilot oil return of directional valve is closed (direct actuated directional valve does not require pilot oil return), external pilot oil return for ZDRE

XL

10

Without check valve

M

Supply voltage of the control electronics

11

Direct voltage 24 V

G24

Electrical connection

12

For type ZDRE:

Without mating connector; connector DIN EN 175301-803

K4

For type ZDREE:

Without mating connector; connector DIN EN 175201-804

K31

Electrical interface

13

For type ZDRE:

no code

Command value 0 … 10 V

A1

Command value 4 to 20 mA

F1

Seal material

14

NBR seals

M

FKM seals

V

15

Further details in the plain text

*

For applications outside these parameters, please consult us!

general

Type

ZDRE ZDREE

Size

10

Component series

2X

Installation position

Preferred position of the proportional solenoid downward or horizontal

Weight

kg

5.1 5.2

Storage temperature range

°C

-20 … +80

Ambient temperature range

°C

-20 … +70 -20 … +50

hydraulic

Type

ZDRE ZDREE

Size

10

Maximum operating pressure

bar

315

Maximum operating pressure

Port P1

bar

315

Port P2

bar

350

Port A

bar

350

Port B

bar

350

Port T

bar

250

Port X

bar

350

Port L

separate and depressurized to the tank

Maximum set pressure in port P1

Pressure rating 50 bar

bar

50

Pressure rating 100 bar

bar

100

Pressure rating 200 bar

bar

200

Pressure rating 315 bar

bar

315

Minimum set pressure 1)

See characteristic curves

Pilot oil volume range

cm³

0.6 … 0.9

Maximum flow

l/min

80

Hydraulic fluid

see table

Hydraulic fluid temperature range

°C

-20 … +80

Viscosity range

mm²/s

15 … 380

Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2)

Class 20/18/15 according to ISO 4406 (c)

Hysteresis 3)

%

± 3

Repetition accuracy 3)

%

< ± 2

Linearity 3)

%

± 3.5

Manufacturing tolerance of the command value pressure characteristic curve 4)

%

± 5 ± 1.5

Step response 5)

10 ... 90%

ms

≈ 160

90 ... 10%

ms

≈ 160
1) in port P1 with command value 0
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) Of the maximum set pressure
4) of the maximum set pressure, related to the hysteresis characteristic curve, pressure increasing
5) measured with standing hydraulic fluid column, 5 liter at port P1

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP

NBR / FKM

DIN 51524

Important information on hydraulic fluids:

For more information and data on the use of other hydraulic fluids please contact us.

The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature.

electrical

Type

ZDRE ZDREE

Power supply

Nominal voltage

VDC

24

Lower limit value

VDC

21

Upper limit value

VDC

35

Minimum solenoid current

mA

100

Maximum solenoid current

mA

1760

Solenoid coil resistance

Cold value at 20 °C

Ω

5.5

Solenoid coil resistance

Maximum hot value

Ω

8.05

Duty cycle

%

100

Current consumption

A

≤ 1.5

Required fuse protection

2, time-lag

Inputs

Voltage

V

0 … 10

Current

mA

4 … 20

Outlet

Actual current value

1 mV ≙ 1 mA

Protection class according to DIN EN 60529

IP65 (with mating connector mounted and locked)

(measured with HLP46, ϑOil = 40 ±5 °C)

Reduced pressure at port P1 dependent on the command value (manufacturing tolerance)

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure at port P1 dependent on the command value (with flow 0 l/min)

Pressure rating 50 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure rating 100 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure rating 200 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure rating 315 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure differential dependent on the flow

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure differential dependent on the flow

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure at port P1 dependent on the flow

Pressure rating 50 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure rating 100 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure rating 200 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pressure rating 315 bar

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Minimum set pressure dependent on the flow at command value 0

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE10VP...L

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE10VP...XL

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE10VP...Y

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDRE10VP...XY

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type sandwich plate HSZ 10 B097-3X/M01

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDREE10VP...XL

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDREE10VP...L

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDREE10VP...Y

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Type ZDREE10VP...XY

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Connection at the connector

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Connection at mating connector

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Pin assignment

Contact

Assignment interface "A1"

Assignment interface "F1"

Power supply

A

24VDC(u(t)=21...35V);Imax≤1,5A

B

0V

Reference potential actual value

C

Reference contact F; 0 V

Reference contact F; 0 V

Differential amplifier input (command value)

D

0 ... 10 V; Re = 100 kΩ

4 ... 20 mA; Re = 100 kΩ

E

Reference potential command value

Measuring output (actual value)

F

0 to 1.6 V actual value (1 mV ≙ 1 mA);
Load resistance > 10 kΩ

PE

connected to solenoid and valve housing

Connection cable

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE
1) Connection cable:- Recommendation 6-wire, 0.75 or 1mm2 plus protective earthing conductor and screening- Connect screening to PE on supply side only- Maximum admissible length 100 m The minimum supply voltage at the power supply unit depends on the length of the supply line (see diagram)

Integrated electronics (OBE)

 

Function

The electronics are supplied with voltage via ports A and B. The command value is applied to the differential amplifier connections D and E. Via the characteristic curve generator, the command value solenoid current characteristic curve is adjusted to the valve so that non-linearities in the hydraulic system are compensated and thus, a linear command value pressure characteristic curve is created. The current controller controls the solenoid current independent of the solenoid coil resistance. The power stage of the electronics for the control of the proportional solenoid is a chopper amplifier with a clock frequency of approx. 180 Hz to 400 Hz. The output signal is pulse-width modulated (PWM). For checking the solenoid current, a voltage can be measured at the connector between pin F(+) and pin C(–) which is proportional to the solenoid current. 1 mV corresponds to 1 mA solenoid current.

Block diagram / pin assignment

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE
technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

1

Solenoid coil

2

Name plate

3

Valve housing

4

Space required to remove the mating connector

5

Identical seal rings for ports A2, B2, P2, TA2, TB2
Identical seal rings for ports X2 and Y2

6

Mating connector for type ZDRE (separate order)

7

Integrated electronics (type ZDREE) with connector

8

Mating connector for type ZDREE
Plastic or metal version (separate order)

9

Porting pattern according to DIN 24340-A10 and ISO 4401-05-05-0-05 (X, Y as required)

10

O-ring and plastic nut wrench size 32 for coil fixation.The nut can be loosened by rotating it counterclockwise (1 turn). The solenoid coil can then be rotated to the required position before fixing it again by tightening the nut.Tightening torque 4 +1 Nm

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M6 - 10.9-flZn-240h-L

(Friction coefficient μtotal = 0.09 to 0.14)

Tightening torque MA = 12.5 Nm ± 10%

or

4 hexagon socket head cap screws ISO 4762 - M6 - 10.9

(Friction coefficient μtotal = 0.12 to 0.17)

Tightening torque MA = 15.5 Nm ± 10%

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

Mating connectors for valves with round connector, 6-pole + PE

7P Z31

technical illustration-0811402173-Pilot-operated proportional valve for system pressure reduction Operation by rotatable proportional solenoid Sandwich plate design Porting pattern according to DIN&nbsp;24340&nbsp;form&nbsp;A and ISO&nbsp;4401 4&nbsp;pressure ratings Valve and control electronics from a single source External control electronics for type ZDRE Linear pressure/command value characteristic curve Integrated electronics (OBE) with little manufacturing tolerance of the command value pressure characteristic curve with type ZDREE

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 95328

Data sheet

Spare parts & repair