RE 18301-03/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements
L8011… (ED2S-DZ)
RE 18301-03
Edition: 02.2016
Replaces: 07.12
4/3 - 4/2 Directional valve elements
with soft-shift
RE 18301-03
Edition: 02.2016
Replaces: 02.2012
General specifi cations
Valve elements with solenoid operated directional spool.
Switching time adjustment by calibrated orifi ces.
Control spools operated by solenoids with removable
coils.
In the de-energized condition, the control spool is held
in the central position by return springs.
Wet pin tubes for DC coils, with push rod for mechanical
override; nickel plated surface.
Coils can be rotated 360° around the tube; they can be
energized by AC current through special connectors with
rectifi er (RAC).
Manual override (push-button or screw type) available
as option.
Size 6
Series 00
Maximum operating pressure 310 bar (4500 psi)
Maximum fl ow 50 l/min (13.2 gpm)
Port connections G 3/8
Contents
Ordering details 2
Symbols 2
Functional description 3
Technical data 3
Characteristic curves 5
External dimensions and fi ttings 6
Electric connection 7
L8011… (ED2S-DZ)
Bosch Rexroth AG, RE 18301-03/02.2016
2 L8011… (ED2S-DZ) | 4/3 - 4/2 Directional valve elements
Ordering details
Ordering details
01 02 03 04 05 06 07 08 09 10
L8011 00
Family
01 Directional Valve elements ED
L
Type
02 Size 6
8
Confi guration
03 Standard
0
Coil type
04 C45
11
Spool variants
05 4/3 operated on both sides a and b
_ 2 _ _
4/2 operated on side a only
_ 3 _ _
Voltage supply 07 03 01 00
06 Without coil
–––
●
00
12V DC
●●●
–OB
13V DC
●●●
–AD
24V DC
●●●
–OC
27V DC
●●●
–AC
48V DC
––
●
–OD
110V DC
––
●
–OE
24V AC (21.5 DC)
––
●
–OV
110V AC (98 DC)
––
●
–OW
230V AC (207 DC)
––
●
–OZ
Electric connections
07 Without coils
00
With coils, without mating connector DIN EN 175301-803
01
1)
With coils, with bi-directional diode, without mating
connector vertical Amp-Junior
03
With coils, with bi-directional diode, without mating
connector DT04-2P
07
Ports
08 G 3/8 DIN 3852
0
Orefi ce Type
09 0.4 mm (0,016inch) hole
E
0.5 mm (0,020inch) hole
G
Options
10 No options
No
code
Standard
0
Push-button type manual override
P
Screw type manual override
F
●
= Available
–
= Not available
Symbols
AB
_ 2 _ _
P
T
a0 b
ab
_ 3 _ _
A
P
T
a0
a
B
Spool variants
=A201
=B201
=C201
=E201
=A301
=B301
=C301
=E301
=X301
=Y301
Installation note: in order to garantee the soft-shift function, it is
reccomended to install in the „T“ line a check valve with the minimum
cracking pressure of 1 bar (14,5 psi).
RE 18301-03/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8011… (ED2S-DZ)
Functional description
3
Functional description
675
4
A
1
2
A
4
5
6
7
3
3
The sandwich plate design directional valve elements
L8011… are compact direct operated solenoid valves
which control the start, the stop and the direction of the oil
fl ow, with the option to adjust the spool switching time.
These elements basically consist of a stackable housing (1)
with a control spool (2), one or two solenoids (5), and one
or two return springs (4).
The spring chambers are connected to the tank port
through orifi ces. When energized, the spool (2) travels and
oil is pushed to tank from one of the spring chambers: if
the cross section of the orifi ces changes, the switching
time changes as well. Three orifi ce sizes are available:
smaller orifi ce diameter results in longer switching time,
even though the actual time is dependent upon pressure,
fl ow and viscosity.
When energized, the force of the solenoid (5) pushes the
control spool (2) from its neutral-central position to the
required end position, and the required fl ow from P to A
(with B to T), or P to B (with A to T) is achieved. Once the
solenoid is de-energized, the return spring (4) pushes the
spool thrust washer (3) back against the housing and the
spool returns in its neutral-central position.
Each coil is fastened to the solenoid tube by a ring nut (6).
A pin (7) allows to push the spool (2) in emergency
conditions, when the solenoid cannot be energized, like in
case of voltage shortage.
Technical data
General
Valve element with 2 solenoids kg (lbs) 1.95 (4.3)
Valve element with 1 solenoid kg (lbs) 1.45 (3.2)
Ambient Temperature °C (°F) –20....+50 (-4....+122) (NBR seals)
Not Available with lever emergency
Hydraulic
Maximum pressure at P, A and B ports bar (psi) 310 (4500)
Maximum pressure at T bar (psi) 250 (3625)
Maximum inlet fl ow l/min (gpm) 50 (13.2)
Hydraulic fl uid
General properties: it must have physical lubricating
and chemical properties suitable for use in hydraulic
systems such as, for example:
Mineral oil based hydraulic fl uids HL (DIN 51524 part 1).
Mineral oil based hydraulic fl uids HLP (DIN 51524 part 2).
For use of environmentally acceptable fl uids (vegetable or
polyglycol base) please consult us.
Fluid Temperature °C (°F) –20....+80 (-4....+176) (NBR seals)
Permissible degree of fl uid contamination ISO 4572: β
x
≥75 X=12...15
ISO 4406: class 20/18/15
NAS 1638: class 9
Viscosity range mm
2
/s 5....420
Bosch Rexroth AG, RE 18301-03/02.2016
4 L8011… (ED2S-DZ) | 4/3 - 4/2 Directional valve elements
Technical data
Orifi ce sizes available in A position Orifi ce type Ø mm (inch) Code
E 0,4 (0,016) 18-0093
G 0,5 (0,020) 18-0094
Electrical
Voltage type DC (AC only with RAC connection)
Voltage tolerance (nominal voltage) % -10 .... +10
Duty Continuous, with ambient temperature ≤ 50°C (122°F)
Switching time ms max 400, depending from orifi ce diameter
Coil wire temperature not to be exceeded °C (°F) 150 (302)
Insulation class H
Compliance with Low Voltage Directive LVD 73/23/EC (2006/95/EC), 2004/108/EC
Coil weight with connection EN 175301-803 kg (lbs) 0.335 (0.74)
Voltage V 12 13 24 27 48 110 24
+RAC
(21,5)
110
+RAC
(98)
230
+RAC
(207)
Voltage type DC DC DC DC DC DC DC DC DC
Power consumption W 33 31 33 33 33 35 33 33 35
Current (nominal at 20 °C (68 °F)) A 2.8 2.3 1.4 1.2 0.7 0.32 1.6 0.34 0.16
Resistance (nominal at 20 °C (68 °F)) Ω 4.24 5.42 17 21.8 69.8 341.8 13.6 285 1229
Note
For applications with different specifi cations consult us
Code Voltage [V] Connector type Coil description Marking Coil Mat no.
OB 01
12 DC
EN 175301-803
(Ex. DIN 43650)
C4501 12DC 12 DC R933000026
OB 03
12 DC AMP JUNIOR C4503 12DC 12 DC R933000027
OB 07
12 DC DEUTSCH DT 04-2P C4507 12DC 12 DC R933000030
AD 01
13 DC
EN 175301-803
(Ex. DIN 43650)
C4501 13DC 13 DC R933000028
AD 03
13 DC AMP JUNIOR C4503 13DC 13 DC R933000029
AD 07
13 DC DEUTSCH DT 04-2P C4507 13DC 13 DC R933000031
OC 01
24 DC
EN 175301-803
(Ex. DIN 43650)
C4501 24DC 24 DC R933000034
OC 03
24 DC AMP JUNIOR C4503 24DC 24 DC R933003630
OC 07
24 DC DEUTSCH DT 04-2P C4507 24DC 24 DC R933000032
AC 01
27 DC
EN 175301-803
(Ex. DIN 43650)
C4501 27DC 27 DC R933000035
AC 03
27 DC AMP JUNIOR C4503 27DC 27 DC R933000036
AC 07
27 DC DEUTSCH DT 04-2P C4507 27DC 27 DC R933000033
OD 01
48 DC
EN 175301-803
(Ex. DIN 43650)
C4501 48DC 48 DC R933000037
OE 01
110 DC
EN 175301-803
(Ex. DIN 43650)
C4501 110DC 110 DC R933000040
OV 01
24 RAC
EN 175301-803
(Ex. DIN 43650)
C4501 21.5DC 21.5 DC R933000038
OW 01
110 RAC
EN 175301-803
(Ex. DIN 43650)
C4501 98DC 98 DC R933000039
OZ 01
230 RAC
EN 175301-803
(Ex. DIN 43650)
C4501 207DC 207 DC R933000041
RE 18301-03/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8011… (ED2S-DZ)
Characteristic curves
5
Characteristic curves
1 2 3 4
25
20
15
10
5
0 10 20 30 40 50 l/min
362,6
300
200
100
0
0 2 4 6 8 10 12 13.2 gpm
psi bar
Pressure Δp
Flow Q
Spool Variant Curve no.
P>T P>A P>B A>T B>T
A201, A301 21111
B201, B301 3333
C201, C301 43344
E201, E301 3344
X301, Y301 3333
Measured with hydraulic fl uid ISO-VG32 at 45° ±5 °C
[113° ±9 °F]; ambient temperature 20 °C [68 °F].
Performance limits
bar
350
300
250
200
150
100
50
0 10 20 30 40 50 l/min
4 1 2 3
psi
5000
4000
3000
2000
1000
0
0 2 4 6 8 10 12 13.2 gpm
Pressure p
Flow Q
Spool Variant Curve no.
A201, A301 1
B201, B301, C201, C301 2
E201, E301 3
X301, Y301 4
The performance curves are measured with fl ow going
across and coming back, like P>A and B>T. With “lever
type” emergency control, the performance limits are
slightly lower.
Bosch Rexroth AG, RE 18301-03/02.2016
6 L8011… (ED2S-DZ) | 4/3 - 4/2 Directional valve elements
External dimensions and fi ttings
Dimensions [mm (inches)]
External dimensions and fi ttings
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1 Solenoid tube Ø 19 mm (0.75 inch).
3 Ring nut for coil locking (Ø 26,5 mm);
torque 5-6 Nm (3.7-4.4 ft-lb).
4 Flange specifi cations for coupling to ED intermediate elements.
5 For tie rod and tightening torque information see data sheet
RE 18301-90.
6 Four threaded holes M5 for fi tting a secondary fl angeable
element. Bolts M5 with recommended strength class DIN 8.8:
torque 5-6 Nm (3.6-4.4 ft-lb).
7 A and B ports.
8 O-Rings for P and T ports.
9 Clearance needed for connector removal.
10 Optional push-button, P type, for emergency spool opening: it is
pressure stuck to the ring nut for coil locking.
Mat. Number R933000043.
11 Optional screw type emergency, F 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. R933007215.
12 Identifi cation label..
RE 18301-03/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8011… (ED2S-DZ)
Electric connection
7
Dimensions [mm (inches)]
Electric connection
00 01
(
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03
Protection class: IP 65 with female connector
properly fi tted (see drawing).
07
Protection class: IP 69 K with female connector
properly fi tted (see drawing).
(
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8
Bosch Rexroth AG, RE 18301-03/02.2016
Bosch Rexroth Oil Control S.p.A.
Oleodinamica LC Division
Via Artigianale Sedrio, 12
42030 Vezzano sul Crostolo
Reggio Emilia - Italy
Tel. +39 0522 601 801
Fax +39 0522 606 226 / 601 802
compact-hydraulics-cdv@boschrexroth.com
www.boschrexroth.com/compacthydraulics
© This document, as well as the data, specifi cations and other information
set forth in it, are the exclusive property of Bosch Rexroth Oil Control S.p.a..
It may not be reproduced or given to third parties without its consent.
The data specifi ed above only serve to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. The information given does not release the
user from the obligation of own judgment and verifi cation. It must be
remembered that our products are subject to a natural process of wear and
aging.
Subject to change.
L8011… (ED2S-DZ) | 4/3 - 4/2 Directional valve elements
Electric connection
