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Compact Directional Valves - Non-compensated and Post-compensated - Directional elements ED Series

ED4-PT1

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Valve element with direct proportional control of spool. Proportional, non pressure compensated, valve element for partial or total unloading to Tank of P flow.

Control spool operated by solenoids with removable coils.

In the de-energized condition, the control spool is held in normal position by return spring.

Wet pin proportional tubes for DC coils, with push rod for mechanical override; nickel plated surface.

Manual override (push-button, screw or lever type) available as option.

Size 6

Series 00

Maximum operating pressure 310 bar (4500 psi)

Maximum flow 35 l/min (9.2 gpm)

NEW spool position sensor available for this valve. See RE18300-30

RE18301-13-order
1)
With ∆P (P > T) 10 bar (145 psi).
2)
For connectors ordering code see data sheet RE 18325-90.
3)
As lever type manual override a choice of options is available and each one implies a specific ordering code (refer to page 7).

Spool variants

RE18301-13-01
RE18301-13-02
RE18301-13-03

The sandwich plate design valve elements L808103P… are compact direct operated proportional solenoid valves which divert totally or partially the inlet P flow to Tank.

These elements basically consist of a stackable housing (1) with a control spool (2), one solenoid (3), and one return spring (4).

With the solenoid de-energized, the return spring (4) keeps the spool (2) in its rest position “0” and all the inlet P flow passes through the valve and is unloaded to Tank. When energized by the electronic feed regulator, the solenoid (3) displaces the control spool (2) from its rest position proportionally to the current received and proportionally restricts the flow area to Tank. A regulated, non pressure compensated, oil flow is diverted from P to T and the remaining amount of inlet flow in the P line remains available for the downstream operators.

The coil (3) is fastened to the solenoid tube by a ring nut (5).

A pin (6) allows to push the spool (2) in emergency conditions, when the solenoid cannot be energized, like in case of voltage shortage.

Code
Voltage [V]
Connector type
Coil description
Marking
Coil Mat no.
OB 01
12 DC
EN 175301-803(Ex. DIN 43650)
GP45 01 - 45 K4
12 DC
R901022180
OB 03
12 DC
AMP JUNIOR
GP45 03 - 45 C4
12 DC
R901022680
OB 07
12 DC
DEUTSCH DT 04-2P
GP45 07 - 45 K40
12 DC
R901272648
OC 01
24 DC
EN 175301-803(Ex. DIN 43650)
GP45 01 - 45 K4
24 DC
R901022174
OC 03
24 DC
AMP JUNIOR
GP45 03 - 45 C4
24 DC
R901022683
OC 07
24 DC
DEUTSCH DT 04-2P
GP45 07 - 45 K40
24 DC
R901272647
General:
Valve element with 1 solenoid, pins EN175301-803:
  • 1.7 kg (3.75 lbs)
Fluid Temperature:
  • –30....+90 (-22....+194) (NBR seals)
Hydraulic:
Maximum pressure at P:
  • 310 bar (4500 psi)
Maximum inlet flow:
  • 35 l/min (9.2 gpm)
Hydraulic fluidGeneral properties: it must have physical lubricating and chemical properties suitable for use in hydraulic systems such as, for example:
  • Mineral oil based hydraulic fluids HL (DIN 51524 part 1). For use of environmentally acceptable fluids (vegetable or polyglycol base) please consult us.
Fluid Temperature:
  • –30....+100°C (-22....+212°F) (NBR seals)
Permissible degree of fluid contamination:
  • ISO 4572: βₓ≥75 X=12...15 NAS 1638: class 9
Viscosity range:
  • 20....380 (optimal 30.... 46) mm2/s
Electrical:
Voltage type:
  • 120 Hz PWM
Voltage tolerance (nominal voltage):
  • -10 .... +10%
Duty:
  • Continuous, with ambient temperature ≤ 90°C (194°F)
Coil wire temperature not to be exceeded:
  • 180°C (356°F)
Insulation class:
  • H
Compliance with:
  • Low Voltage Directive LVD 73/23/EC (2006/95/EC), 2004/108/EC
Coil weight:
  • 0.335 kg (0.732 lbs)
Voltage:
  • 12 V
  • 24 V
Nominal 100% current:
  • 1.8 A
  • 1.2 A
Coil resistance (nominal at 20°C (68°F)):
  • Note: For applications with different specifications consult us
  • 3.3 Ω - Cold value
  • 7.2 Ω - Cold value

P -> T, vs %A = Percentage of the maximum current supplied to the coil

RE18301-13-04
Curve no.
Nominal Flow WithΔp (P > T) 10bar (145psi)
Max flow
Max pressure at P
1
12 l/min(3.17gpm)
14 l/min(3.7gpm)
310 bar(4500psi)
2
18 l/min(4.75gpm)
20 l/min(5.3gpm)
310 bar(4500psi)
3
25 l/min(6.6 gpm)
28 l/min(7.4gpm)
310 bar(4500psi)
4
35 l/min(9.2 gpm)
40 l/min(10.57 gpm)
310 bar(4500psi)

Pressure Drop

RE18301-13-05
Curve no.
Nominal Flow WithΔp (P > T) 10bar (145psi)
Max flow
Max pressure at P
1
12 l/min(3.17gpm)
14 l/min(3.7gpm)
310 bar(4500psi)
2
18 l/min(4.75gpm)
20 l/min(5.3gpm)
310 bar(4500psi)
3
25 l/min(6.6 gpm)
28 l/min(7.4gpm)
310 bar(4500psi)
4
35 l/min(9.2 gpm)
40 l/min(10.57 gpm)
310 bar(4500psi)

Measured with hydraulic fluid ISO-VG32 at 45° ±5 °C (113° ±9 °F); ambient temperature 20 °C (68 °F).

RE18301-13-dim1
1
Solenoid tube Ø 23 (0.9 inch).
3
Ring nut for coil locking (Ø 30.3 mm (1.18 lnch));torque 6–7 Nm (4.4 – 5.2 ft-lb).
4
Flange specifications for coupling to ED intermediate elements.
5
For tie rod and tightening torque information see data sheet RE 18301-90.
6
Clearance needed for connector removal.
7
Identification label.
8
Optional push-button manual override, 0P type, for spool opening: it is pressure stuck to the ring nut for coil locking.Mat no. R933003424.
9
Optional screw type manual override, 0F type, for spool opening: it is screwed (torque 6-7 Nm (4.4-5.2 ft-lb)) to the tube as replacement of the coil ring nut. Mat no. R930056486.
10
Optional push-button manual override NP (black) and RP (red) type, for spool opening. It is screwed (torque 6-7Nm (4.4-5.2 ft-lb) to the tube as replacement of the coil ring nut. Mat no. R930056488 (black) - R930056489 (red)

RE18301-13-dim2
1
Ordering Details: HA (if fitted to side A) or HB (if fitted to side B)
2
Ordering Details: VA (if fitted to side A) or VB (if fitted to side B)
3
Ordering Details: H1 (if fitted to side A) or H9 (if fitted to side B)
4
Ordering Details: V1 (if fitted to side A) or V9 (if fitted to side B)
5
Ordering Details: XA (if fitted to side A) or XB (if fitted to side B)
6
Ordering Details: X1 (if fitted to side A) or X9 (if fitted to side B)
RE18301-13-06
RE18301-13-07

Supply: yellow LED, lit up with power ON.

Off Set: minimum current adjustment. Adjust solenoid current so that the desired minimum value is obtained. Clockwise rotation increases current.

Ramp up: Ramping up time adjustment.

Ramp down: Ramping down time adjustment.

For longer ramping times, turn potentiometers clockwise; for shorter ramping times, turn the potentiometers counter-clockwise.

Full load current: Maximum current adjustment. Adjust solenoid current so that the desired maximum value is obtained (up to 2A). Clockwise rotation increases current.

Frequency adjustment: it is possible to set the PWM frequency obtaining the desired control sensitivity. After removing the external plastic cover, turn the adjusting screw; clockwise rotation increases frequency from 100 to 500 Hz.

Electronic feed regulator
Regulator ordering code
R933003290
Supply voltage
12-30 VDC
Control Signal
0-10 VDC
Max. output current
2 A
Minimum output current
0....0.6 A
Ramp adjustment up/down
0.1.... 10 s
PWM Frequency adjustment (pre-set 120 Hz)
100.... 500 Hz
Ambient operating temperature
-10....+60 °C(14....+140 °F)
Weight
0.12 kg(26.4 lbs)
Electromagnetic compatibility
EN50081-1/2EN61000 4-2/3/4/5/6
Potentiometer resistance
5....10 κ Ω

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