Hydraulic uid mineral oil according to DIN 51524 (other uids on request)
Fluid temperature range – 20 bis 80 °C
Ambient temperature range – 30 to 50 °C
Viscosity range 5 to 400 mm
2
/s
Porting NG 6 according to DIN 24340 / ISO 4401 / CETOP RP 121 H
Nominal pressure stages 315 bar, 400 bar, 550 bar, 700 bar
Max. operating pressure connection P, A, B 700 bar
Max. operating pressure connection T 70 bar
Max. ow rate directly operated: 8 l/min / pilot operated: 25 l/min
Filtration (recommendation) according to NAS 1638 class 6 or ISO/DIN 4406 17/15/12
Duty cycle DC 100%
Solenoid voltage (nominal resistance) 24 VDC (5 Ohm)
Degree of protection IP 65 according to EN 60529 / DIN 40050
Weight directly operated: 2 kg / pilot operated: 3 kg
Dither frequency (recommendation) 60 - 400 Hz
Hysterese ≤ 5 % with optimal dither signal
Material valve body: stainless steel
Ssolenoid coil: ZnNi-plated (1000 h salt spray test)
Technical data
Electrical control of supply or working pres-
sure in open or closed control loop:
• remote pressure setting
• maintaining pressure within small limits,
independent of disturbance
• generating any pressure time curves
• Pre-relief of large volumes
Applications
• Directly operated with wide useful range
• Pilot operated for high ow rate
• High degree of pressure stability
• Linear pressure-current characteristic
• External tank connection option with
automatic disconnection of the directly
operated valve from the system tank line
Features
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Proportional pressure relief valves
Design
• Easy-running proportional solenoid with 360° rotatable and replaceable
plug-in coil
• Low friction, direct force transmission to the valve needle
• Manual override for manual function test
• The pilot operated valve consists of the direct operated valve, main stage
and end plate
• The orices of the main stage are easily exchangeable
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-
-
-
-
-
- -
00C
P
6I
V
8
24
400
PDB
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Design revision
For internal purposes
Index
Please leave blank
For internal purposes
Design
00 ... 99
For internal purposes
Control method 24 solenoid 24 VDC
Seal material V FKM
other seal materials on request
Nominal pressure stage 315 bar
400 bar
550 bar
700 bar
Max. ow rate 8 l/min directly operated
25 l/min pilot operated
Nominal size 6 ...
Connection ISO ... I
Pressure relief P In connection P
Proportional pressure relief valve
Example
Type code
3/9
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Max. operating pressure 315 bar 400 bar 550 bar 700 bar
Max. ow rate 8 l/min
Part No. 4487130 4487227 4487226 4487214
Symbol
Max. ow rate 25 l/min
Part No. 4590611 4590612 4590613 4590614
Symbol
Product information
Orice
Orice
*
* Internal check valve ensures automatic disconnection of the system tank line when using the side tank outlet
*
**
** Plug (
3778885)
enclosed loose. Only install if the external tank connection of the main stage is used.
4/9
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Dimensional drawings
Pilot operated
Directly operated
5/9
(Q = 1 l/min)
0
100
200
300
400
500
600
700
800
0 200 400 600 800 1000 1200 1400 1600
p [ bar ]
I [ mA ]
700 bar
550 bar
400 bar
315 bar
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Pressure p(I, nominal pressure stage)
Drilling pattern
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0
100
200
300
400
500
600
700
800
0 2 4 6 8
p [ bar ]
Q [ l / min ]
700 bar
550 bar
400 bar
315 bar
0
100
200
300
400
500
600
700
800
0 5 10 15 20 25
p [ bar ]
Q [ l / min ]
700 bar
550 bar
400 bar
315 bar
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Pressure p(Q, nominal pressure stage)
Directly operated
Pilot operated
7/9
0
2
4
6
8
10
12
0 5 10 15 20 25
p [ bar ]
Q [ l / min ]
1.0
10.0
100.0
0.1 1 10
p [bar]
Q [ l/min ]
700 bar
550 bar
400 bar
315 bar
200
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Minimum pressure pmin(Q, nominal pressure stage)
Directly operated
Pilot operated
all nominal pressure stages
8/9
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Accessories
Part description Type code Part No.
Screw-in orice Ø 0.2 (for mounting in the P connection)
BL700-6-D5,5-0,2-A*00 3688087
Screw-in orice Ø 0.3 (for mounting in the P connection)
BL700-6-D5,5-0,3-A*00 3985507
Screw-in orice Ø 0.4 (for mounting in the P connection)
BL700-6-D5,5-0,4-A*00 3891841
Screw-in orice Ø 0.5 (for mounting in the P connection)
BL700-6-D5,5-0,5-A*00 3688099
Screw-in orice Ø 0.6 (for mounting in the P connection)
BL700-6-D5,5-0,6-A*00 3985546
Screw-in orice Ø 0.7 (for mounting in the P connection)
BL700-6-D5,5-0,7-A*00 3985547
Screw-in orice Ø 0.8 (for mounting in the P connection)
BL700-6-D5,5-0,8-A*00 3985549
Screw-in orice Ø 0.9 (for mounting in the P connection)
BL700-6-D5,5-0,9-A*00 3985550
Part description For valve type Part No.
1 x Plug for solenoid grey all 6132484
1 x Plug for solenoid black all 3728850
4 x Socket head screw ISO 4762-M5 x 60-12.9 directly operated 4576469
4 x Tie bolt, M5 x 152-12.9 pilot operated 4455766
4 x Special hexagonal nut-M5 x 2d-12 pilot operated 4455768
Dimensional drawing Symbol
Spare parts
Part description For valve type Part No.
4 x O-ring, 9.25 x 1.78, FKM all 4455692
1 x Plug (
when using external T-connection
) all 3778885
1 x Solenoid coil 24 VDC all 4356848
1 x Pole tube nut all 914559
1 x O-ring for pole tube nut all 616992
1 x Plug for external T-connection all 613141
For pressure relief valves see technical data sheet DB500/700/1000.
Other mounting screws, tie bolts and subplates see technical data sheet
AP700/RP700/EP700.
Bieri Hydraulik AG
Könizstrasse 274
CH-3097 Liebefeld
Tel. +41 31 970 09 09 | Fax +41 31 970 09 10
info@bierihydraulics.com | www.bierihydraulics.com
9/9
The information in this brochure relates to the operating condi-
tions and applications described.
For applications and operating conditions not described, ple-
ase contact the relevant technical department.
Subject to technical modications.
Type PDB-6I
NG 6 ISO
up to 25 l/min, up to 700 bar
Safety
We recommend to operate the proportional pressure relief
valves only in combination with a separate pressure relief
valve to limit the pressure to the max. allowed value.
Open loop control (without actual system pressure feedback)
• manual adjustment of the actual pressure
• pressure adjustment with manual operated potentiometer or PLC-control
Closed loop control (with actual system pressure or force feedback)
• for automatic adjustment of system pressure to the pre-selected pressure
• for pressure setting with PLC, manual operated potentiometer or via BUS-system
Electronic controllers (available from HYDAC)
Electronic selection table
PDB-6I_10000548360_EN_34L23
design
HYDAC Part No.
HYDAC ordering code
amplier mode („open loop control“)
controller mode („closed loop control“)
setpoint signal 0 ...10 V
setpoint signal 4 … 20 mA
coupling via iO-Link
oscilloscope function
resolution (% current range)
solenoids in sectable form indep.
status monitoring control range
accessoires for the parameterization
Amplier
connector
6112594 EHCD-AP011XXXD ● ● ● 0,1 1
Interface box for amplier
connector
(HYDAC - EHCD-APIFB) =
6108514
6108508 EHCD-AP012XXXD ● ● ● 0,1 1
Snap in
module
according
EN50022
6158999 EHCD-AM005XXXU ● ● ● ● 0,01 2
USB-cable Typ B
(Standard printer cable)
6249389
6174133 EHCD-CUPREXAXPA ● ● ● ● ● 0,006 1
6174135 EHCD-CUPREXHXPA ● ● ● ● ● 0,0025 1 ●
6269387 EHCD-CUPR2LAXPA ● ● ● 0,01 2
