File: AD2E003_E 15/2010/eI • 2
1
The diagram at the side shows the pressure drop curves for spools during normal usage.
The fluid used is a mineral based oil with a viscosity of 46 mm
2
/s at 40°C; the tests have been
carried out at a fluid temperature of 40°C. For higher flow rates than those in the diagram the
losses will be those expressed by the following formula:
Δp1 = Δp x (Q1/Q)
2
where Δp will be the value for the losses for a specific flow rate Q which can be obtained from
the diagram, Δp1 will be the value of the losses for the flow rate Q1 that is used.
ORDERING CODE
AD Directional valve
2 CETOP 2/NG4
E Electrical operator
** Spool (tables next page)
* Mounting (table 1 next page)
* Voltage (table 2 next page)
** Variants (table 3 next page)
3 Serial No.
DIRECTIONAL CONTROL VALVES CETOP 2/NG4
The ARON directional control valves NG4 are designed for subplate mounting with an
interface in accordance with UNI ISO 4401 - 02 - 01 - 0 - 94 standard (ex CETOP R 35 H
4.2-4-02), and are the smallest on the market in their category whilst still featuring excellent
performance.
The use of solenoids with wet armatures ensures quiet operation, means that dynamic seals
are no longer required and important levels of counter-pressure are accepted on the return
line. The solenoid's tube is screwed at valve body directly, while a locking ring nut seal the coil
in right position.
The cast body with a great care in the design and production of the ducts of the 5 chambers
have made it possible to improve the spools allowing relatively high flow rate with low pressure
drops (Δp).
The spool rest positions are obtained by means of springs which centre it when there is no
electrical impulse. The solenoids are constructed to DIN 40050 standards and are supplied
by means of DIN 43650 ISO 4400 standard connectors which, suitably assembled, ensure a
protection class of IP 65.
The solenoid coils are normally arranged for DIN 43650 ISO 4400 type connectors (standard
version). On request, could be available the following coil connection variants: AMP Junior
connections; flying leads connections, with or without integrated diode; Deutsch connections
with bidirectional integrated diode.
The supply may be in either DC or AC form (with the use of a connector and rectifier) in most
common voltage.
The valves are designed for use with DIN 51524 standard hydraulic mineral oils and it is
recommended that filters should be fitted to ensure a maximum contamination level of class
10 in accordance with NAS 1638, ß
25
≥75..
CETOP 2/NG04
AD.2.E... CH. I PAGE 4
"A09" DC COILS CH. I PAGE 4
STANDARD CONNECTORS CH. I PAGE 19
PRESSURE DROPS
0
2
4
6
8
10
12
14
16
18
20
0 2 4 6 8 10121416182
0
Δp (bar)
Q (l/min)
1 2
3
4
5
6
7
* = with energized spool
Spool Connections
type P→AP→BA→TB→TP→T
01 4466
02 66775
03 4477
04 11223
05 6644
66 5557
06 5575
15 4444
16 5566
20* 5 5 6 6
Curve No.
File: AD2E003_E 15/2010/eI • 3
1
LIMITS OF USE (MOUNTING C-E-F)
TAB. 1 MOUNTING
DIRECTIONAL CONTROL VALVES CETOP 2/NG4
• Mounting type D is only for
solenoid valves with detent
• In case of mounting D with
detent, the supply to solenoid must
be longer than 100 ms.
Spool
Type
01 1
02 3
03 1
04 4
05 1
66 1
06 1
15 1(7*)
16 2(6*)
20 5
The tests have been carried out with solenoids at operating temperature and a voltage
10% less than rated voltage with a fluid temperature of 40°C. The fluid used was a
mineral oil with a viscosity of 46 mm
2
/s at 40 C°. The values in the diagram refers to
tests carried out with the oil flow in two directions simultaneously (e.g. from P to A and
at the same time B to T). In case of valve 4/2 or 4/3 used with flow in one direction
only, the limits of use could have variations which may even be negative.
Medium switching times Energizing: 20 ms
De-energizing: 40 ms
Tests have been carried out by spool normally closed with flow of 10 l/min at 125 bar
and a 100% supply, warm standard coil and without any electronic components. These
values are indicative and depend on the following parameters: the hydraulic circuit, the
fluid used and the variation of pressure, flow and temperature.
NOTE: Limits of use are available for C, E, F mounting.
(6*) = 16 spool used as 2 or 3 way,
follow the curve n°4
(7*) = with 8W coil
Curves No
STANDARD
C
D
E
F
SPECIALS (WITH PRICE INCREASING)
G
H
I
L
M
VARIANT CODE
No variant 00
Viton V1
Pilot light X1
Rectifier R1
Emergency button E1
Rotary emergency button P1 (*)
Solenoid valve without connectors S1
Cable gland "PG 11" C1
Viton + Pilot light VX
Viton + Rectifier VR
Pilot light + Rectifier XR
AMP Junior connection AJ
Solenoid with flying leads (250 mm) FL
Solenoid with flying leads (130 mm)
and integrated diode LD
Deutsch connection with bidir. diode CX
Coil 8W (only 24V) 8W
Other variants relate to a special design
TAB.3 - VARIANTS
DC VOLTAGE
L 12V
M 24V
N 48V*
P 110V*
Z 102V*
X 205V*
W Without DC coils
TAB.2 - A09 (27 W) COIL
* Special voltage
Voltage codes are not stamped on the
plate, their are readable on the coils.
115Vac/50Hz
120Vac/60Hz
with rectifier
230Vac/50Hz
240Vac/60Hz
with rectifier
• The AMP Junior coil and with the
flying leads (with or without diode)
coils are available in 12V or 24V
DC voltage only.
• The Deutsch coil with
bidirectional diode is available in
12V DC voltage only.
(*) P1 Emergency tightening torque max.
6÷9 Nm / 0.6 ÷ 0.9 Kgm with CH n. 22
STANDARD SPOOLS
ONE SOLENOID, SIDE B "F" MOUNTING
Spool Covering Transient position
Type
01 +
02 -
03 +
04* -
05 +
66 +
06 +
15 -
16 +
ONE SOLENOID, SIDE A "E" MOUNTING
Spool Covering Transient position
Type
01 +
02 -
03 +
04* -
05 +
66 +
06 +
15 -
16 +
TWO SOLENOIDS, SPRING CENTRED "C" MOUNTING
Spool Covering Transient position
Type
01 +
02 -
03 +
04* -
05 +
66 +
06 +
TWO SOLENOIDS "D" MOUNTING
Spool Covering Transient position
Type
20* +
* SPOOLS WITH PRICE INCREASING
File: AD2E003_E 15/2010/eI • 4
1
Support plane
specifications
Screws with material specifications
min. 8.8 recommended - UNI 5931
Tightening torque of screws
M5x35 = 5 Nm / 0.5 Kgm.
E = Manual override
AD.2.E... DIRECTIONAL CONTROL SOLENOID OPERATED VALVES CETOP 2/NG4
Max. pressure ports P/A/B 250 bar
Max pressure port T (dynamic) 250 bar
Max flow 20 l/min
Max excitation frequency 3 Hz
Duty cycle 100% ED
Fluid viscosity 10 ÷ 500 mm
2
/s
Fluid temperature -25°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max contamination level class 10 in accordance with
NAS 1638 with filter ß
25
≥75
Weight with one DC solenoid 0,88 Kg
Weight with two DC solenoids 1,1 Kg
DC COILS A09
Type of protection
(in relation to connector used) IP 65
Number of cycle 18.000/h
Supply tolerance ±10%
Ambient temperature -30°C ÷ 60°C
Duty cycle 100% ED
Insulation class wire H
Weight 0,215 Kg
VOLTAGE MAX WINDING TEMPERATURE RATED POWER RESISTANCE AT 20°C
(V) (AMBIENT TEMPERATURE 25°C) (W) (OHM) ±7%
12V 123°C 27 5.3
24V 123°C 27 21.3
48V* 123°C 27 85.3
102V* 123°C 27 392
110V* 123°C 27 448
205V* 123°C 27 1577
* Special voltages
ETA09/AD2-CDL04-C3V - 04/2001/e
• The AMP Junior coil and with the
flying leads (with or without diode)
coils are available in 12V or 24V
DC voltage only.
• The Deutsch coil with
bidirectional diode is available in
12V DC voltage only.
DEUTSCH COIL WITH
BIDIR
. DIODE (CX)
DT04 - 2P
AMP JUNIOR (AJ)
FLYING LEADS (FL)
LEADS WITH DIODO (LD)
E1 MANUAL
EMERGENCY
P1(*) R OTARY
EMERGENCY
(*) P1 Emergency tightening torque max. 6÷9 Nm / 0.6 ÷ 0.9 Kgm with CH n. 22
