DENISON HYDRAULICS
Pressure Relief Valve R6V
Publ. 3-EN 2950-A (dig.)
FEATURES • High Performance: R6V valves are designed for a maximum pressure of
350 bar and a flow capacity up to 650 l/min.
• Sensitive Control: The DENISON poppet design delivers the minimum possible
friction, superior hysteresis and optimum response to changes in operating
conditions.
• Wide Selection: The R6V series of pilot operated pressure relief valves is
available with mechanical and proportional adjustment, with external or onboard
electronics and with a vent function for circulation at minimum pressure.
• Standardized Mounting: Mounting configurations for R6V Pressure Controls
are in accordance with international standards, and conform to ISO 6264 (DIN
24340 Form E).
SYMBOL
Example: R6V06
FEATURES, SYMBOL
2
X A B
Y
Z
SYMBOL
Example:
R6V06 Proportional function with
Mechanical Pressure Adjustment
optional
X A B
Y
Z
GENERAL Denison R6V pressure relief valves are pilot operated controls consisting of two
sections. A high flow poppet type seat valve as main stage and a mechanical or
proportional pilot stage.
The mechanical version can optionally be supplied with a vent function (vent valve
4D01) to allow circulation at minimum pressure.
The proportional version is available with external or onboard electronics. The
connector is a 6-pole+PE type conform to DIN 43563 – standard for most valves
with onboard electronics. A mechanical maximum pressure stage is optional.
OPERATION The system pressure in Port A is applied, via an orifice in X, to the pilot valve, the
proportional valve (where present), and to the top surface of the main poppet. The
hydraulically balanced main poppet is held against the seat by the main spring. In
this state there is no flow through the valve.
The adjusted spring force acting on the pilot cone determines the relief pressure. If
the pressure in Port A exceeds the set point, the pilot cone is lifted from its seat,
releasing a small pilot flow to tank.
1)
The flow through the control orifice in X creates a pressure drop which limits the
pressure at the top of the main poppet to the set point.
The higher system pressure in Port A now lifts the main poppet off its seat and
allows flow to Port B.
In the resulting float position only enough flow is passed from Port A to Port B to
maintain the inlet pressure in Port A at the set point.
When the pressure in Port A falls below the set point, the hydraulic balance on the
main poppet is restored. The main spring then forces the main poppet to close.
The pilot drain chamber/proportional drain chamber is normally connected to Port B.
Alternative external drain through the Y-port is available.
1)
The proportional function varies the pressure applied to the top of the main poppet,
in proportion to the current input to the solenoid.
The setting of the optional mechanical stage determines the maximum pressure
and should be approximately 10% higher than the max. adjustable pressure of the
proportional section.
DESCRIPTION
3
GENERAL Ɣ Type of unit Pilot operated pressure relief
Ɣ Design Poppet type
Ɣ Type of mounting Subplate mounting
conform to ISO 6264/DIN 24 340 Form E
Ɣ Port sizes 3/8”, 1", 1¼"
Ɣ Mounting position optional
Ɣ Direction of flow A ĺ B
Ɣ Ambient temperature range - 20°C . . . + 50°C
Ɣ Suitability for special Consult DENISON
working conditions
HYDRAULIC CHARACTERISTICS Ɣ Operating pressure range
- inlet (port A) 0 . . . 350 bar
- outlet (port B) 0 . . . 350 bar
(for >30 bar Y must be external)
- port X 0 . . . 350 bar
- port Y 0 . . . 30 bar
Ɣ Pressure setting range p
min
. . . 350 bar (see page 7)
Ɣ Max. flow 220 l/min, R6V03 (3/8”)
500 l/min, R6V06 (1")
650 l/min, R6V10 (1¼")
Ɣ Fluid Petroleum base anti-wear fluids (covered by
DENISON HF-0 and HF-2 specification).
Such as mineral oil according to DIN
51524/25. Maximum catalogue ratings and
performance data are based on operation
with these fluids.
Ɣ Fluid temperature range - 20°C . . . + 80°C
Ɣ Viscosity range 10 . . . 650 cSt
Ɣ Recommended operating viscosity 30 cSt
Ɣ Contamination level Max. permissible contamination level
according to NAS 1638 Class 8 (Class 9 for
15 micron and smaller) or ISO 17/14
TYPE OF ADJUSTMENT Manual Hand wheel, set screw
Electric (vent valve 4D01) by solenoid
Ɣ Nominal voltage Refer to ordering code (see page 5)
Ɣ Permissible voltage difference + 5 % . . . – 10 %
Ɣ Max. coil temperature + 180°C
(temperature class H)
Ɣ Type of current Alternating current (AC)
Direct current (DC)
Ɣ Input power 31 W (for DC)
Ɣ Holding 78 VA (for AC)
Ɣ Inrush 264 VA (for AC)
Ɣ Relative operating period 100 %
Ɣ Type of protection IP 65
Electric proportional
Ɣ Max. coil temperature + 180°C
(temperature class H)
Ɣ Type of protection IP 65
(DIN 40050)
Ɣ Relative operating period 100 %
Ɣ Maximum current 2500 mA
Ɣ Coil resistance at 20°C 4 :
TECHNICAL DATA
4
ORDERING CODE MECHANICAL CONTROL
5
ORDERING CODE PROPORTIONAL CONTROL
6
p-Q-CURVES
CURVES MECHANICAL CONTROL
7
Flow Q [l/min]
Pressure p [bar]
R6V03 Standard
Flow Q [l/min]
Pressure p [bar]
Minimum pressure curves
Flow Q [l/min]
Pressure p [bar]
R6V06 Standard
Flow Q [l/min]
Pressure p [bar]
Minimum pressure curves
Flow Q [l/min]
Pressure p [bar]
R6V10 Standard
Flow Q [l/min]
Pressure p [bar]
Minimum pressure curves
p-Q-CURVES
CURVES PROPORTIONAL CONTROL
8
Command signal [%]
Pressure p [% of maximal pressure]
External electronics Onboard electronics with linearisation
Pressure p [% of maximal pressure]
Command signal [%]
Signal/pressure curve Signal/pressure curve
P/Q performance curves
1)
Flow Q [l/min]
Pressure p [bar]
Flow Q [l/min]
Pressure p [bar]
Flow Q [l/min]
Pressure p [bar]
R6V03 P2 / P2 OBE R6V06 P2 / P2 OBE R6V10 P2 / P2 OBE
Minimum pressure curves
1)
Flow Q [l/min]
Pressure p [bar]
Flow Q [l/min]
Pressure p [bar]
Flow Q [l/min]
Pressure p [bar]
R6V03 P2 / P2 OBE R6V06 P2 / P2 OBE R6V10 P2 / P2 OBE
1)
The performance curves are measured with external drain.
For internal drain the tank pressure has to be added to curve.
Weight: 4.5 kg
Port sizes 4 Mounting screws* (Torque … Nm)
Model No. Order No.
A + B X Dimensions Order No. min. tensile strenght
SS-B-08-G-150 S26-98590-0 G 3/4 G 1/4
M12x45
DIN912-12.9 361-12254-8 115 Nm
R6V03 (3/8“) SUBLATE MOUNTING
9
Block mounting face
Flatness 0.01 mm / 100 mm length
Surface finish CLA 1.27 µm
Ports
A
B
X
Y
Function
Pressure (inlet)
Tank (outlet)
Remote control or
Vent connection
External drain
* Mounting screws are included in subplate order.
For valves ordered without subplate, mounting screws must be ordered separately.
SUBPLATE
Weight: 3.9 kg
Weight: 5.8 kg
Port sizes 4 Mounting screws* (Torque … Nm)
Model No. Order No.
A + B X Dimensions Order No. min. tensile strenght
SS-B-16-G-151 S26-98591-0 G1 1/4 G 1/4
M16x65
DIN912-12.9 361-14294-8 281 Nm
R6V06 (1“) SUBLATE MOUNTING
10
Block mounting face
Flatness 0.01 mm / 100 mm length
Surface finish CLA 1.27 µm
Ports
A
B
X
Y
Function
Pressure (inlet)
Tank (outlet)
Remote control or
Vent connection
External drain
* Mounting screws are included in subplate order.
For valves ordered without subplate, mounting screws must be ordered separately.
SUBPLATE
Weight: 8.0 kg
Weight: 7.8 kg
Port sizes 4 Mounting screws* (Torque … Nm)
Model No. Order No.
A + B X Dimensions Order No. min. tensile strenght
SS-B-24-G-152 S26-38592-0 G 1 1/2 G 1/4
M18x75
DIN912-12.9 361-15314-8 398 Nm
R6V10 (1 1/4“) SUBLATE MOUNTING
11
Ports
A
B
X
Y
Function
Pressure (inlet)
Tank (outlet)
Remote control or
Vent connection
External drain
* Mounting screws are included in subplate order.
For valves ordered without subplate, mounting screws must be ordered separately.
Block mounting face
Flatness 0.01 mm / 100 mm length
Surface finish CLA 1.27 µm
SUBPLATE
Weight: 18.6 kg
Weight (4D01): 1.4 kg
TYPE OF CONTROL-CODE 3 TYPE OF CONTROL-CODE 4
Acorn nut with seal Adjusting device with key lock.
Key must be ordered separately,
Order-no. 700-70619-8
V
ENT FUNCTION (4D01), ADDITIONAL TYPES OF CONTROL
13
SYMBOLS
Plug-in connector ISO 4400
PG11
Manual override
ADDITIONAL TYPES OF CONTROL
12
Version with external electronics
Weight: size 03 = 5.2 kg
size 06 = 6.4 kg
size 10 = 8.3 kg
Recommended Proportional Amplifier
Digital, E-Module
PCD00-A-400 (see catalogue PARKER HY11-2500)
Analogue, Euro Card
EC01 A1O, Order no. 701-00600-8 (see catalogue DENISON 9-EN 6010)
Version with onboard electronics
Weight: size 03 = 5.4 kg
size 06 = 6.6 kg
size 10 = 8.5 kg
VERSION WITH PROPORTIONAL FUNCTION
...13
Plug-in connector ISO 4400
PG11
Important:
On initial start up
and after long shut down periods
bleed air from this plug
Connector to be ordered
separately (see page 15).
6+PE
(use shielded
cable only)
Important:
On initial start up
and after long shut down periods
bleed air from this plug
The proportional amplifier located on top of the valve is specially adapted to control
proportional pressure relief valves type R6V. The pressure versus command signal
characteristic is electronically linearized (see curves page 8).
The amplifier has a reverse polarity protection and one short circuit protected WM-
output stage with max. current limit.
Electronics for two different types of command signals are available – see ordering
code on page 6 and below.
The ramp up/down potentiometers can be adjusted after removing the top.
The valves in combination with the electronics are factory set and sealed.
The main board is equipped with a diagnostic LED to display the operational
conditions.
Example: R6V06…P2
Characteristics ಥ Proportional Amplifiers
ySupply voltage
– nominal 24 V DC
– smoothed battery voltage 18…32 V DC
y Reference voltage from amplifier ± 10 V (± 0.5%) @ 10 mA stabilised
y Current consumption l
nom
approx. 2.0 A at 100% command signal (140 mA quiescent)
y Short circuit protection for the solenoid
y Command signals 0...+10 V, 200 kȍ input impedance (Pin 2)
4...20 mA, 100 ȍ input impedance (Pin 2)
(4...20 mA command = 0...100% current at the solenoid)
y Potentiometer for
– ramp up up to 10s ± 20% (1...50 V/s)
– ramp down up to 10s ± 20% (1...50 V/s)
y PWM 190 Hz ± 10%
y Diagnostic LED green: power on + solenoid de-energised (command signal setting zero)
yellow: power on + solenoid energised (with increasing command signal)
y Wiring due to EMC shielded cables are required
Connector wiring diagram
ONBOARD ELECTRONICS
14
Block diagram
1)
This setting is factory set and sealed.
Breaking the seal voids any claim for optimum reproducibility
from valve to valve.
Details of potentiometers and connector
ONBOARD ELECTRONICS
...15
This setting is factory set and sealed.
Breaking the seal voids any claim for
optimum reproducibility from valve to valve.
Ramp
Plug-in Connecto
r
6pole+PE type conform to ISO 43563
Ordering No. 167-01127-8
