85 110/116 ED

1/4

— The DXJ3 valve is a four-way servo-proportional valve

where the spool moves inside a sleeve. This valve has a

direct drive with a linear force motor resulting in high

dynamic performances which are independent of system

pressure. The spool position is controlled by a linear

transducer (LVDT) with closed loop which

ensures high precision and repeatability.

— It is available in four different flow rate control

ranges up to 40 l/min, with spools with zero

overlap and a mounting surface in compliance

with ISO 4401 (CETOP RP 121H) standards.

— The valve is featured by integrated electronic

based on SMD technology which ensures

standard regulations and simplifies the electric

wiring. The unit does not require any adjustment

other than the possible electronic regulation of

the zero.

— Suitable for control applications with closed

loop of position, velocity and pressure. With a

loss of power or with a zero reference signal, the

spool goes automatically at rest-position. In this

position the valve has a minimum leakage,

depending on the operating pressure (see the

performances table).

0.750.75

31.7531.75

25.925.9

15.515.5

5.15.1

2.712.7

3131

M5M5

Ø4Ø4

Ø7.5(max)Ø7.5(max)

21.521.5

30.230.2

40.540.5

333

DXJ3

ELECTRO-HYDRAULIC

SERVOVALVE WITH INTEGRATED

ELECTRONICS

SERIES 10

HYDRAULIC SYMBOL

MOUNTING SURFACE OPERATING PRINCIPLE

85 110/116 ED

ISO 4401-03-02-0-05

(

CETOP 4.2-4.03-350)

SUBPLATE MOUNTING

ISO 4401-03 (CETOP 03)

p max

350 bar

Q max (see performances table)

Maximum operating pressure

Ports P - A - B

Port T

bar 350

Rated flow Q nom (with ∆p 70 bar P - T) l/min 5 - 10 - 20 - 40

Null leakage flow (with p = 140 bar) l/min ≤ 3% of Q nom

Hysteresis % In < 0,2

Threshold % In < 0,1

Thermal drift (with ∆T= 50°C) % In < 1,5

Response time ms ≤ 12

Vibration on the three axes g 30

Electric features see paragraph 3

Protection degree according CEI EN 60529 IP 65

Ambient temperature range °C -20 / +60

Fluid temperature range °C -20 / +80

Fluid viscosity range cSt 5 ÷ 400

Fluid contamination degree

according to ISO 4406:1999

class 17/15/12

(16/14/11 for longer life)

Recommended viscosity cSt 25

Mass kg 2,5

PERFORMANCES (with mineral oil of viscosity 36 cSt at 50°C)

85 110/116 ED

2/4

DXJ3

SERIES 10

1 - IDENTIFICATION CODE

Rated size

ISO 4401-03 (CETOP 03)

Symmetric spool

Spool with zero overlap

Spool with a linear flow rate curve

Rated flow (with p = 70 bar P - T)

05 = 5 l/min 20 = 20 l/min

10 = 10 l/min 40 = 40 l/min

Servo-proportional

valve with bushing

spool

2 - CHARACTERISTIC CURVES (measured with viscosity of 36 cSt at 50°C)

REFERENCE / FLOW RATE CURVE FLOW RATE CURVE ACCORDING TO ∆P

Typical flow rate curves at constant ∆p = 70 bar P-T according to the

reference signal.

NOTE: with positive reference signal connected to pin D the

valve regulates P - A / B - T.

The diagram states the maximum valve controlled flow rate

according to the pressure drop between the P and T ports.

The diagram shows the valve pressure gain, expressed as % of the

ratio between the port pressure variation in A or B (

∆p AB) and the

P system pressure, according to the reference signal. In practice,

the pressure gain states the valve reaction towards external

disturbances aimed at changing the actuator position.

PRESSURE GAIN

Reference signal [%]

D X J 3 - D 0 L / 10 / E0 K11

Integrated electronics and

position feedback

Reference signal [%]

Seals:

N = NBR seals for mineral oil (standard)

V = FPM seals for special fluids

Series No. (from 10 to 19 sizes and mounting

dimensions remain unchanged)

Reference signal: ±10V (other

signals available on request)

6 + PE pole connector

85 110/116 ED

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DXJ3

SERIES 10

3 - ELECTRICAL FEATURES

CONNECTION WIRING

RESPONSE TIME FREQUENCY RESPONSE

Signal

± 10 %

Signal ± 90 %

% Spool Stroke

Frequency [Hz]

Amplitude [dB]

Phase lag [degrees]

NOTE 1: The input stage is a differential amplifier. With positive reference signal connected to pin D, valve opening P - A e B - T is achieved.

With a zero reference signal the spool is in centred position. The spool stroke is proportional to U

- U

. If only one command signal is available

(single-end), pin E must be connected to pin B (0V ground).

NOTE 2: The spool position value can be measured at pin F (see diagram right).

The position signal output goes from 4 to 20 mA. The centered position is at 12 mA,

while 20 mA corresponds to 100% valve opening P - A and B - T. This monitoring allows

to detect a cable break when I

= 0V.

General requirements:

• External fuse = 1,6 A

Minimum cross-section of all leads ≈0,75 mm

• When making electric connections to the valve (shield, protective earth) appropriate measures must be taken to ensure that locally

different earth potentials do not results in excessive ground currents.

• The differential and the spool position signal lines must be connected to the mating connector housing at valve side and to the 0V (signal

ground) at cabinet side.

• EMC: meets the requirements of EN 55011:1998, class B, and the immunity regulation according to EN 61000-6-2:1998

valve side

spool stroke range

Pin Values Function NOTES

A 24 VDC Supply From 19 to 32 VDC I

A MAX

= 1,2 A

B 0 V Signal ground 0 V

C ---- Not used ----

D ± 10 V Input rated command R

= 10 kΩ (see NOTE 1)

E 0 V Input rated command ----

F 4 ÷ 20 mA Spool position R

= from 300 to 500 Ω (see NOTE 2)

PE ---- Protective earth ----

85 110/116 ED

4/4

DUPLOMATIC OLEODINAMICA S.p.A.

20015 PARABIAGO (MI)  Via M. Re Depaolini 24

Tel. +39 0331.895.111

Fax +39 0331.895.339

www.duplomatic.com  e-mail: sales.exp@duplomatic.com

DXJ3

SERIES 10

REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.

DUPLOMATIC OLEODINAMICA S.p.A.

20015 PARABIAGO (MI)  Via M. Re Depaolini 24

Tel. +39 0331.895.111

Fax +39 0331.895.339

www.duplomatic.com  e-mail: sales.exp@duplomatic.com

6 - OVERALL AND MOUNTING DIMENSIONS

5 - INSTALLATION

The DXJ3 valve can be installed in any position without impairing its

correct operation.

The valve is fixed by means of screws on a flat surface with

planarity between 0,01 mm over 100 mm and roughness

< 0,8 µm. If the minimum values are not observed, the fluid can

easily leak between the valve and the mounting surface. While

mounting pay attention to the environment and valve cleanliness.

Surface finishing

dimensions in mm

Fastening bolts: 4 bolts SHC M5 x 55 - ISO 4762

Torque: 8,5 Nm

4 - HYDRAULIC FLUIDS

Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals. For fluids HFDR type

(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical

department. Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics.

The fluid must be preserved in its physical and chemical characteristics.

1 Mounting surface with sealing rings:

N. 4 OR type 2037 (9.25x1.78) - 90 Shore

N. 1 OR type 2031 (7.66x1.78) - 90 Shore

2 Integrated electronics

3 Linear force motor

4 Electric connector 7 pins DIN 43563 - IP67

PG11 EX7S/L/10 cod. 3890000003

(to be ordered separately)