1
The proportional directional control valve consists of a
cast-iron body (1), main spool (2), control spool (3), two
auxiliary centring springs (4), two main return springs (5)
and two proportional solenoids (6).
The pilot controlled main spool valve copies the control
spool position, which is given the control current of the
solenoid.
The central position of the main spool is defined by the
auxiliary centring springs.
The solenoids are supplied from an external source,
which should be provided with a current feedback.
In order to achieve optimum operating parameters the
external elektronics should be able to generate an
additional dither - signal.The proportional valve can be
used within the whole range of input pressure, where
within the required continuity of the flow-rate
characteristics and minimum hysteresis is achieved.
The selected concept increases the achieved output
parameters of the proportional valve in comparison to
direct controlled proporcional valve. Further on the valve
shows a monotone increasing relation between
pressure gradient and flow rate by constant control
current.
Proper functions of the valve are guaranteed only, if the
supply pressure in the “P” channel is present; this
pressure must be always higher than the pressure in the
“T” channel.
The basic surface treatment of the valve housing is
phosphate coated and the operating solenids are zinc
coated.
k
l
j
m
HA 5178
2/2014
Proportional Directional Control
Valves
PRM8-06
Functional Description
D
n
06 • p
max
350 bar (5076 PSI) • Q
max
140 l/min (37 GPM)
q
High parameters of controlled flow rates
q
Continuous control of both flow rate directions
q
High reliability
q
Indirect control concept with a floating spool
q
Installation dimensions to DIN 24 340 /
ISO 4401 / CETOP RP121-H
Replaces
HA5178 11/2012
2
HA 5178
Nominal size
3Z11
3Y11
Proportional Directional
Control Valve
Nominal supply voltage
12 V DC
12
24 V DC 24
Ordering Code
Technical Data
Nominal size mm (US) 06
Maximum operating pressure at ports P, A, B bar (PSI) 350 (5076)
Maximum flow at pressure 320 bar (4641PSI) l/min (GPM) 140 (37)
Maximum operating pressure at port T bar (PSI) 210 (3046)
Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 51524
Fluid temperature range (NBR / Viton) °C (°F) -30 ... +80 (-22 ... +176) / -20 ... +80 (-4 ... +176)
Ambient temperature, max. °C (°F) +50 (+122)
Viscosity range mm
2
/s (SUS) 20 ... 400 (98 ... 1840 )
Maximum degree of fluid contamination Class 21/18/15 according to ISO 4406
Nominal flow rate Q
n
at Dp = 10 bar(145PSI)
(n = 32 m
2
m.s
-1
(156 SUS ))
l/min (GPM) 25 (6.60)
Hysteresis % £ 6
Weight PRM8-063 kg (lbs) 2,4 (5.29)
Mounting position unrestricted, preferably horizontal
Enclosure type EN 60 529 IP 65
Technical Data of the Proportional Solenoid
Type of coil V 12 DC 24 DC
Limit current A 2,5 1.6 (12 V electronic) 1,0
Resistance at 20 °C (68 °F) W 2,3 5.2 (12 V electronic) 13,4
Technical Data of the Electronics
Nominal supply voltage U
cc
V 12 DC 24 DC
Supply voltage range V 11,2 ... 14,7 20 ... 30 DC
Stabilized voltage for control V 5 DC (R > 1 kW 10 DC (R ³ 1 kW)
Maximum output current A 2.4 for R < 4 W 1,5 for R < 10 W
Ramp adjustment range s 0,05...3
Dither frequency Hz 90 / 60
Dither amplitude % 0...30
Type of solenoid coil and Electronics
- Type of solenoid coil
E1 Connector EN 175301-803-A
E2 Connector EN 175301-803-A
with quenching diode
E3A Axial connector AMP Junior Timer (2 pins; male)
E4A Axial connector AMP Junior Timer
with quenching diode
E12 Connector Deutsch DT04-2P (2 pins; male)
E13 Connector Deutsch DT04-2P
with quenching diode
PRM8-06 / -
Other coils on demand see catalog HA 8007.
Electronics for controlling proportional valves is possible to order separately, see catalog HA 9150.
Seals
no designation
NBR
V FPM (Viton)
Nominal flow rate at Dp = 10 bar
25 L/min
25
3
HA 5178
Limit power
P ® A / B ® T or P ® B / A ®T
Æ44,5(1.75)
12,5(0.49)
12,70.50)
21,5(0.85)
30,2(1.19)
33(1.30)
40,5(1.59)
32,5(1.28)
0,75(0.03)
5,1(0.20)
15,5(0.61)
31(1.22)
25,9(1.02)
68(2.68)72,7(2.86)
213,4(8.40)
49,3(1.94)
Æ45(1.77)
Æ12,4(0.49)
1,5(0.06)
22(0.87)
Æ8(0.31)
Æ9(0.35)
Æ5,3(0.21)
((68,5)(2.70))
Æ45(1.77)
Valve Dimensions Dimensions in millimeters (inches)
Measured at n = 32 mm
2
/ s (156 SUS)
Flow Characteristic
Measured at n = 32 mm
2
/ s (156 SUS
The coil current which initializes the flow
through the proportional directional valve
can differ due to the production tolerances
in a range of ± 6% of the limit current.
Required surface finish of
interface.
Input pressure p
in
[bar (PSI)]
Flow Q [l/min (GPM)]
Control current I
c
[%]
Flow Q [l/min (GPM)]
4
HA 5178
Caution !
Subject to alteration without notice!
4. Bolt kit
Dimensions, number Tightening torque Ordering number
M5 x 45 DIN 912-10.9 (4 pcs) 8,9 Nm (6.56 Ibf.ft) 15845100
5. Nut + seal ring
Type of the nut Seal ring Ordering number
Standard nut 22 x 2 15844600
2. Seal kit
Type Dimensions, number Ordering number
Viton 9,25 x 1,78 (4 pcs) 17,17 x 1,78 (2pcs) 15845400
1. Solenoid coil
Ordering number
E1 E3A E12 E13
Nominal supply voltage [V] Ordering number
12 18838500 19744700 19696100 19909300
24 18838300 19744300 19696200 28811200
Spare Parts
3. Connector plug EN 175301-803-A
Type
designation
Type Model
Max. input
voltage
Ordering number
K1
Connector B (černá)
bez usměrňovače - M16x1,5
(otvor průchodky Æ 6-8 mm)
230 V AC/DC
16202100
Connector A (šedá) 16202200
ARGO-HYTOS s.r.o. CZ - 543 15 Vrchlabí
tel.: +420-499-403 111
e-mail: info.cz@argo-hytos.com
www.argo-hytos.com
The packing foil is recyclable.
The protective plate can be returned to manufacturer.
Mounting bolts M5 x 45 DIN 912-10.9 or studs must be ordered separately.
Tightening torque of the bolts is 8,9 Nm (6.6 ft-lbs).
The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should
not be construed in any case as a guaranteed representation of the product properties in the sense of law.
4
3
1
5
2
1 Solenoid coil
2 Seal kit
3 Connector plug EN 175301-803-A
4 Bolt kit
5 Nut + seal ring
