Technical Information
Proportional Valve Group
PVG 120
powersolutions.danfoss.com
Technical Information
PVG 120 Proportional Valve Group
Revision history Table of revisions
Date Changed Rev
March 2017 minor updates 1002
Mar 2014 Chapters re-order, Modules selection chart JA
Dec 2013 Converted to Danfoss layout – DITA CMS ID
2006 - 2012 Various updates AB - IC
Apr 2006 New edition AA
2 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Contents
Literature reference for PVG products
General Information
Valve System...................................................................................................................................................................................... 6
General Characteristics...................................................................................................................................................................6
Pump Side Module – PVP.............................................................................................................................................................. 6
Basic Module – PVB..........................................................................................................................................................................7
Actuation Modules...........................................................................................................................................................................7
Electronic Accessories.....................................................................................................................................................................7
Remote Controls Units....................................................................................................................................................................8
Function
PVG 120 with PVP Open Center.................................................................................................................................................. 9
PVG 120 with PVP Closed Center................................................................................................................................................9
PVG 120 sectional view
Safety in application
Control system example..............................................................................................................................................................12
Examples of wiring block diagram.....................................................................................................................................14
Technical Data
PVG 120 technical data................................................................................................................................................................ 16
PVM, mechanical actuation........................................................................................................................................................16
PVH, hydraulic actuation.............................................................................................................................................................17
PVE, electrical actuation ............................................................................................................................................................. 17
PVPE, electrical relief valve, normally open..........................................................................................................................17
Electrical Actuation
PVEO, ON-OFF................................................................................................................................................................................. 19
PVEH, proportional high..............................................................................................................................................................19
PVEH, Inductive Transducer (LVDT – Linear Variable Differential Transformer)................................................20
PVEH, Pulse Width Modulation (Integrated)...................................................................................................................21
PVEH fault monitoring..................................................................................................................................................................21
PVEH, connection to fault monitoring output...............................................................................................................22
Technical Characteristics
General...............................................................................................................................................................................................23
PVP, pump side module.............................................................................................................................................................. 23
PVB, Basic Module..........................................................................................................................................................................24
PVLP, Shock Valve Characteristic (with Pressure Relief Valve).......................................................................................26
PVLP/PVLA, Suction Function....................................................................................................................................................27
Hydraulic system examples
Example of PVG 120 with variable displacement pump..................................................................................................28
Example of PVG 120 with fixed displacement pump........................................................................................................29
Other operating conditions
Hydraulic fluids for PVG...............................................................................................................................................................30
Particle Content, Degree of Contamination.........................................................................................................................30
Filtering..............................................................................................................................................................................................30
Conversion Factors........................................................................................................................................................................31
Dimensions
PVG 120 dimensions..................................................................................................................................................................... 32
PVM, Lever Positions.....................................................................................................................................................................34
Modules and Code Numbers
PVP and PVPV, Pump Side Modules .......................................................................................................................................35
PVP, Accessories for Open Center Pump Side Modules...................................................................................................35
PVB, Basic Modules........................................................................................................................................................................36
PVB, Accessories for Basic Modules ........................................................................................................................................36
PVLA, Suction Valve.......................................................................................................................................................................37
PVLP, Shock and Suction Valves for A/B Port Connections............................................................................................ 37
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Technical Information
PVG 120 Proportional Valve Group
Contents
PVBS, Main Spools..........................................................................................................................................................................38
PVM, Mechanical Actuation....................................................................................................................................................... 38
PVMD, Cover for Mechanical Actuation.................................................................................................................................38
PVH, Hydraulic Actuation............................................................................................................................................................38
PVHC, High Current Actuator.....................................................................................................................................................39
PVE, Electrical Actuation..............................................................................................................................................................39
PVT, tank side module..................................................................................................................................................................39
PVAS, Assembly Kit........................................................................................................................................................................40
PVG 120 Modules Selection Chart
PVG 120 module selection chart.............................................................................................................................................. 41
Order specification
Ordering of modules for oil flow exceeding 180 l/min [47.6 US gal/min].................................................................45
Order Form.......................................................................................................................................................................................45
Reordering...................................................................................................................................................................................46
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Technical Information
PVG 120 Proportional Valve Group
Literature reference for PVG products
Literature reference
Literature title Type Order
PVG 32 Proportional Valve Group Technical Information 520L0344
PVG 100 Proportional Valve Group Technical Information 520L0720
PVG 120 Proportional Valve Group Technical Information 520L0356
PVG 32 Metric ports Technical Information 11051935
PVE Series 4 Technical Information 520L0553
PVED-CC Electro-hydraulic actuator Technical Information 520L0665
PVED-CX Electro-hydraulic actuator Technical Information 11070179
PVE-CI Technical Information L1505234
Basic module for PVBZ Technical Information 520L0721
PVSK module with integrated diverter valve and P-disconnect function Technical Information 520L0556
PVPV / PVPM pump side module Technical Information 520L0222
Combination module PVGI Technical Information 520L0405
PVSP/M Priority module Technical Information 520L0291
Hitch Control System Description 11036124
PVBZ Data Sheet 520L0681
PVBZ-HS Data Sheet 520L0956
PVBZ-HD Data Sheet 11035599
MC024-010 and MC024-012 Controllers Data Sheet 520L0712
number
User Manual 11033753
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Technical Information
PVG 120 Proportional Valve Group
General Information
Valve System
Load sensing proportional valve type PVG 120 is a combined directional and flow control valve which is
supplied as a valve group consisting of modules specified to match particular customer needs. The
flexible nature of this valve will allow an existing valve bank to be easily adapted to suit changes in
requirements.
General Characteristics
Pump Side Module – PVP
Load-independent flow control:
•
Oil flow to an individual function is independent of the load of this function
‒
Oil flow to one function is independent of the load pressure of other functions
‒
Good regulation characteristics
•
Central pilot supply built in when the valves are actuated electrohydraulically
•
Energy-saving
•
Up to eight basic modules per valve group
•
Built-in pressure relief valve
•
System pressure up to 400 bar [5800 psi]
•
Pressure gauge connection
•
Versions:
•
Open centre version for systems with fixed displacement pumps
‒
Open centre version prepared for an extra relief module
‒
Closed centre version for systems with variable displacement pumps
‒
Closed centre version without system pressure relief valve for variable displace ment pumps with
‒
built-in pressure relief valve.
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Technical Information
PVG 120 Proportional Valve Group
General Information
Basic Module – PVB
Integrated pressure compensator in channel P
•
Interchangeable spools
•
Depending on requirements the basic module can be supplied with:
•
Shock/suction valves
‒
Adjustable LS pressure limiting valve for ports A and B
‒
LS connection
‒
Module for oil flows exceeding 180 l/min [47.6 US gal/min]
‒
Different spool variants
‒
Actuation Modules
The basic module is always fitted with mechanical actuation PVM, which can be combined with the
following as required:
Electrical actuation:
•
PVEH - proportional, high performance (11 - 32 V )
‒
PVEO - On/off (12 V == or 24 V ==)
‒
Cover for hydraulic remote control, PVH
•
Cover for mechanically actuated valve group, PVMD
•
Electronic Accessories
EHF, low adjustment unit
•
EHR, ramp generator
•
EHS, speed control
•
EHSC, closed loop speed control
•
EHA, alarm logic
•
EHC, closed loop position control
•
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PVRE, electrical control unit, 162F…
Prof 1, 162F…
PVREL, electrical control unit, 155U…
PVRES, electrical control unit, 155B…
PVRH, hydraulic control unit, 155N…
155N0003 155N0001 155N0004 155N0005 155N0002
Technical Information
PVG 120 Proportional Valve Group
General Information
Remote Controls Units
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Technical Information
PVG 120 Proportional Valve Group
Function
PVG 120 with PVP Open Center
When the pump is started and the main spools (1) in the individual basic modules are in neutral position,
oil flows from the pump, through connection P, across the pressure adjustment spool (2) to tank.
The oil flow led across the pressure adjustment spool determines the pump pressure (stand-by pressure).
If a reduced stand-by pressure is required, an extra relief valve PVPH or PVPE can be used in PVP.
When the main spools are actuated the highest load pressure is distributed across the shuttle valve
circuit (3) to the spring chamber behind the pressure adjustment spool (2) and completely or partly
closes the connection to tank.
The pump pressure is applied to the right-hand side of the pressure adjustment spool (2). The pressure
relief valve (4) opens when the load pressure exceeds the set value, allowing pump flow to be diverted
back to tank.
In the basic module the compensator (5) maintains a constant pressure drop across the main spool –
both when the load changes and when a module with a higher load pressure is activated.
Shock and suction valves with a fixed setting (7) and the suction valves (8) on ports A and B are used to
protect individual working functions against overload.
In the basic module it is possible to build in an adjustable LS pressure relief valve (6) to limit the pressure
from each working function.
The LS pressure limiting valve saves energy:
•
•
PVG 120 with PVP Closed Center
In the closed center version an orifice (9) has been fitted instead of the plug. This means that the pressure
adjustment spool (2) will only open to tank when the pressure in channel P exceeds the pressure relief
valve setting (4).
In load sensing systems the load pressure is led to the pump regulator via the LS connection (10), so the
orifices (11) have been removed, and a plug (12) has been fitted instead of one of the orifices.
In neutral position the pump regulator will set the displacement so that leakage in the system is just
compensated for.
When a main spool is activated, the pump regulator will adjust the displacement so that the set
differential pressure between P and LS is maintained.
The pressure relief valve (4) in PVP is set for a pressure of about 30 bar [435 psi] above maximum system
pressure (set at the pump or an external pressure relief valve).
If the system or the pump regulation has a pressure relief valve, it is possible to use a PVPV pump side
module, without integrated pressure adjustment spool and pressure relief valve.
Without LS pressure limiting valve all the oil flow to the working function will be led across the
combined shock and suction valves to tank if the pressure exceeds the fixed setting of the valves.
With LS pressure limiting valve an oil flow of only about 2 l/min [0.5 US gal/min] will be led across the
LS pressure limiting valve to tank if the pressure exceeds the valve setting.
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4
10
12
11
11
X-X
X
X
P A
V310100.A
9
2 1
T
P
T
p
ma
A B
A B
3
7 5 1 8
T
P
T
13
6
5
LS
T
P
T
3
13
P B
Technical Information
PVG 120 Proportional Valve Group
PVG 120 sectional view
PVG 120 sectional view
Legend:
1 – Main spool
2 – Pressure adjustment spool in PVP
3 – Shuttle valve
4 – Pressure relief valve in PVP
5 – Pressure compensator in PVB
6 – LS pressure relief valve in PVB
7 – Shock and suction valve PVLP
8 – Suction valve PVLA
9 – Orifice, closed center PVP; Plug, open center PVP
10 – LS connection
11 – Orifice, open center PVP
12 – Plug, closed center PVP
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W
Technical Information
PVG 120 Proportional Valve Group
Safety in application
All types of control valves (incl. proportional valves) can fail, thus the necessary protection against the
serious consequences of function failure should always be built into the system. For each application an
assessment should be made for the consequences of pressure failure and uncontrolled or blocked
movements. To determine the degree of protection that is required to be built into the application,
system tools such an FMEA (Failure Mode and Effect Analysis) and Hazard and Risk Analysis can be used.
FMEA – IEC EN 61508
FMEA (Failure Mode and Effect Analysis) is a tool used for analyzing potential risks. This analytical
technique is utilized to define, identify, and prioritize the elimination or reduction of known and/or
potential failures from a given system before it is released for production. Please refer to the standard IEC
FMEA 61508.
Hazard and risk analysis ISO 12100-1/14121
This analysis is a tool used in new applications as it will indicate whether there are special safety
considerations to be met according to the machine directives EN 13849. Dependent on the determined
levels conformity this analysis will detirmine if any extra requirements for the product design,
development process, production process or maintenance, example the complete product life cycle.
Warning
All brands and all types of directional control or proportional valves, which are used in many different
operation conditions and applications, can fail and cause serious damage.
Analyze all aspects of the application. The machine builder/system integrator alone is responsible for
making the final selection of the products and assuring that all performance, safety and warning
requirements of the application are met. The process of choosing the control system and safety levels is
governed by the machine directives EN 13849 (Safety related requirements for control systems).
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Technical Information
PVG 120 Proportional Valve Group
Safety in application
Control system example
Example of a control system for manlift using PVE Fault monitoring input signals and signals from external sensors to ensure the PLUS+1® main
controllers correct function of the manlift.
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Technical Information
PVG 120 Proportional Valve Group
Safety in application
Electrical block diagram for the above illustration
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
PVG 32 – mainly used in system with fixed displacement pumps:
•
PVSK, commonly used in crane application - full flow dump
•
PVPX, LS dump to tank
PVG 100 – alternative LS dump or pilot supply disconnect:
•
PVPP, pilot oil supply shut off
•
External cartridge valve connecting LS pressure or main pressure to tank
PVG 120 – pump disconnect / block for variable pumps:
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Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 13
Fault detection output
high=on
low=off
Alarm
logic
2)
Memory3)
E1
E2
Output
AND
OR
U
DC2
Error
U
S
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
U
DC2
Error
U
S
PVEH
with AMP
connector
PVEH
with AMP
connector
Hydraulic
deactivation
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
PVE 1
PVE 2
Emergency
stop
Man present
switch
C
C
D
B
B
A
P301 318
W
Technical Information
PVG 120 Proportional Valve Group
Safety in application
•
PVPE, full flow dump for the PVG 120
•
External cartridge valve connecting LS pressure to tank
Examples of wiring block diagram
Example of a typical wiring block diagram using PVEH with neutral power off switch and fault monitoring
output for hydraulic deactivation.
A– Emergency stop / man present switch
B– PVE Fault monitoring signals
C– Neutral signal detection.
D– Hydraulic deactivation
System Control Logic e.g. PLUS+1® for signal monitoring and triggering signal for deactivation of the
hydraulic system.
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
14 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
Fault detection output
PVEH-DI
AMP supply
connector
PVEH-DI
AMP supply
connector
PVEH-DI
AMP connector
PVEH-DI
AMP connector
AND
high=on
low=off
Neutral detection / Supply control
signal
≠
neutral
OFF
Delay
1)
PVE 1
PVE 2
Fault detection
Delay
DI
Logic
Memory
U
S
DI-A
DI-B
2)
4)
3)
Output
Fault detection
Delay
DI
Logic
Memory
U
S
DI-A
DI-B
2)
4)
3)
Output
OR
Emergency
Stop
Man present
switch
P301 319
U
DC2
Error
U
S
DI-B
Error
DI-A
U
DC2
Error
U
S
Error
DI-A
Hydraulic
deactivation
W
Technical Information
PVG 120 Proportional Valve Group
Safety in application
Example of fault monitoring for deactivation of the hydraulic system with extra fault inputs using the PVE’s
with DI (Direction Indication) function.
System Control Logic e.g. PLUS+1® for signal monitoring and triggering signal for deactivation of the
hydraulic system.
Warning
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
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Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 15
Technical Information
PVG 120 Proportional Valve Group
Technical Data
PVG 120 technical data
Maximum pressure Port P
Port A/B
Port T, static/dynamic
Oil flow
See
Oil flow characteristics
Spool travel
Dead band (± 25%)
Maximum internal leakage
at 100 bar, 21 mm2/s
Oil temperature (inlet temperature) Recommended temperature
Ambient temperature
Oil viscosity Operating range
Filtering / Max. contamination (ISO 4406)
See
Filtering
Oil consumption in pressure reduction valve for PVT at PVE pilot-oil supply
for more information.
for more information.
Port P, rated max.
Port A/B
A/B→T, without shockvalve
A/B→ T, with shockvalve
Min. temperature
Max. temperature
Min. viscosity
Max. viscosity
continuous 350 bar [5075 psi]
intermittent
2)
1)
400 bar [5800 psi]
400 bar [5800 psi]
25 bar/40 bar [365/580 psi]
240/300 l/min [63.4/79.3 US gal/min]
65/95/130/180/ 210/240
l/min
± 8 mm [± 0.32 in]
± 2 mm [± 0.08 in]
90 cm3/min [5.5 in3/min]
95 cm3/min [5.6 in3/min]
30 to 60°C [86 to 140°F]
–30°C [–22°F]
+90°C [+194°F]
–30 to +60°C [–22 to +140°F]
12 to 75 mm2/s [65 SUS to 347 SUS]
4 mm2/s [39 SUS]
460 mm2/s [2128 SUS]
23/19/16
0.4 l/min [0.1 US gal/min]
[17.2/25.1/34.3/47.6/
55.5/63.4 US gal/min]
PVM, mechanical actuation
1)
Intermittent operation: the permissible values may occur for max. 10% of every minute.
2)
See Order Form for more information regarding the ordering or conversion of valve groups for oil flows
exceeding 180 l/min [47.6 US gal/min].
PVM, Mechanical Actuation
PVM data
Operating force PVM + PVMD
PVM + PVE (without voltage)
PVM + PVH 4.7 ± 0.2 N•m
Possible control lever positions: 2 × 5
Regulation range, control lever: ±19,5°
Neutral position Max. spool travel
2.8 ± 0.2 N•m
[24.8 ± 1.8 lbf•in]
[41.6 ± 1.8 lbf•in]
4.0 ± 0.2 N•m
[35.5 ± 1.8 lbf•in]
12.8 ± 0.2 N•m
[113.3 ± 1.8 lbf•in]
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Technical Information
PVG 120 Proportional Valve Group
Technical Data
PVH, hydraulic actuation
PVH, Hydraulic Actuation
PVH data Pressure, bar [psi]
Control range 5 to 15 [75 to 220]
Maximum pilot pressure, static 35 [510]
Maximum pressure on port T
(It is recommended that the tank connection from the hydraulic remote control unit
PVRH is taken directly to tank.)
PVE, electrical actuation
PVE, electrical actuation
PVE actuation PVEO ON/OFF PVEH Proportional
Hysteresis (applies to the electrical
actuation only)
Reaction time from neutral position to max.
spool travel
Reaction time from max. spool travel to
neutral position
Pilot oil flow pr. PVE Neutral position without voltage 0 l/min / [0 US gal/min]
Enclosure to IEC 529 IP65
3 [45 ]
High
1)
2)
Locked with voltage
Typical - 4%
Typical 250 ms 250 ms
Maximum 350 ms 280 ms
Typical 240 ms 150 ms
Maximum 330 ms 200 ms
3)
0 l/min / [0 US gal/min]
1)
The hysteresis is stated at rated and f = 0,02 Hz for a cycle. One cycle includes the movement from
neutral position to max. spool travel direction A, via neutral position to max. spool travel in direction B,
and back to neutral position. Further information can be obtained by contacting the Danfoss Power
Solutions Sales Organization.
2)
Reaction times for PVEH is reduced by 20 by 30 ms if the voltage is not interrupted during the neutral
positioning (remote control lever without neutral position switch).
3)
Total oil consumtion for a spool movement from N to full A or B: 0.0035 l [0.0009 US gal].
PVPE, electrical relief valve, normally open
PVPE, electrical relief valve, normally open
Maximum operation pressure
Maximum pressure drop at flow of 0.2 l/min [0.053 US gal/min]
Oil temperature (inlet
temperature)
Maximum coil surface temperature
Ambient temperature
Recommended temperature
Min. temperature
Max. temperature
350 bar [5085 psi]
1.2 bar [17 psi]
30 to 60 °C [86 to 140 °F]
–30 °C [–22 °F]
90 °C [194 °F]
155 °C [311 °F]
–30 to +60 °C [–22 to +140 °F]
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Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 17
Technical Information
PVG 120 Proportional Valve Group
Technical Data
PVPE, electrical relief valve, normally open (continued)
Oil viscosity Operating range
Response time for pressure relief to tank
Enclosure to IEC 529
Rated voltage
Maximum permissible deviation from rated supply voltage
Current consumption at rated
voltage
Power consumption at 22 °C [72 °F] coil temperature
Min. viscosity
Max. viscosity
at 22 °C [72 °F] coil temperature
at 85 °C [230 °F] coil temperature
at 85 °C [230 °F] coil temperature
12 to 75 mm2/s [65 to 347 SUS]
4 mm2/s [39 SUS]
460 mm2/s [2128 SUS]
600 ms
IP 65
12 V 24 V
± 10 % ± 10 %
1.55 A 0.78 A
1.0 A 0.5 A
19 W 19 W
12 W 12 W
18 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
V310185.A
P
A
T
P
T
p
B
Technical Information
PVG 120 Proportional Valve Group
Electrical Actuation
PVEO, ON-OFF
The main features of PVEO:
Compact
•
Robust operation
•
Hirschmann or AMP connector
•
Low electrical power
•
PVEH, proportional high
PVEO parameters
Supply voltage U
Current consumption at rated voltage
Signal voltage (PVEM) neutral
Signal current at rated voltage (PVEM)
Input impedance in relation to 0.5 • U
Power consumption
DC
rated
range
maximum ripple
A-port ↔ B-port
DC
12 V
DC
11 V to 15 V 22 V to 30 V
5%
0.65 A @ 12 V 0.33 A @ 24 V
0.5 x U
DC
0.25 • UDC to 0.75 • U
0.25 mA 0.50 mA
12 KΩ
8 W
24 V
DC
DC
PVEH adjusts the main spool position so that it corresponds to an electrical control signal – for example
from a remote control unit.
The control signal (set-point signal) is converted into a hydraulic pressure which moves the main spool.
The position of the main spool is converted in the positional transducer (C) to an electric signal (feedback signal). This signal is registered by the electronics.
The variation between the set-point signal and feed-back signal actuates the solenoid valves, thus the
hydraulic pressure moves the main spool into the correct position.
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Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 19
V310099.A
P
A
T
P
T
B
p
C
Technical Information
PVG 120 Proportional Valve Group
Electrical Actuation
The main features of PVEH:
Inductive transducer
•
Integrated pulse width modulation
•
Low hysteresis
•
Fast reaction time
•
Hirschmann or AMP connector
•
Fault monitoring with transistor output for signal source
•
Low electrical power
•
No set-up procedure
•
PVEH parameters
Supply voltage U
Current consumption at rated voltage
Signal voltage Neutral
Signal current at rated voltage
Input impedance in relation to 0.5 • U
Input capacitor
Power consumption
PVEH Maximum load
DC
Reaction
time at fault
Rated and Range
Maximum ripple
A-port ↔ B-port
DC
Active / Passive 500 ms 250 ms
11 V to 32 V
5%
0.57 (0.33) A @ 12 V 0.3 (0.17) A @ 24 V
0.5 x U
DC
0.25 • UDC to 0.75 • U
0.25 mA to 0.70 mA
12 KΩ
100 ηF
7 (3.5) W
100 mA 60 mA
DC
PVEH, Inductive Transducer (LVDT – Linear Variable Differential Transformer)
When the main spool is moved a voltage is induced proportional to the spool position. The use of LVDT
gives contact-free (proximity) registration of the main spool position. This means an extra-long working
life and no limitation as regards the type of hydraulic fluid used. In addition, LVDT gives a precise position
signal of high resolution.
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Technical Information
PVG 120 Proportional Valve Group
Electrical Actuation
PVEH, Pulse Width Modulation (Integrated)
Positioning of the main spool in PVEH is based on the pulse width modulation principle. As soon as the
main spool reaches the required position, modulation stops and the spool is locked in position.
PVEH fault monitoring
A fault monitoring system is provided in all PVEA, PVEH and PVES modules.
The system is available in two versions:
The active fault monitoring type, which provides a warning signal, deactivates the solenoid valves
•
and drives the spool in neutral.
The passive fault monitoring type, which provides a warning signal only.
•
Both active and passive fault monitoring systems are triggered by three main events:
1. Input signal monitoring – The input signal voltage is continuously monitored. The permissible
range is between 15% and 85% of the supply voltage. Outside this range the section will switch into
an active error state.
2. Transducer supervision – If one of the wires to the LVDT sensor is broken or short-circuited, the
section will switch into an active error state.
3. Supervision of the closed loop – The actual position must always correspond to the demanded
position (input signal). If the actual spool position is further than the demanded spool position
(>12%, PVEA: >25%), the system detects an error and will switch into an active error state. On the
other hand, a situation where the actual position is closer to neutral than that demanded will not
cause an error state. This situation is considered “in control”.When an active error state occurs, the
fault monitoring logic will be triggered.
Active fault monitoring:
•
A delay of 500 ms (PVEA: 750 ms) before anything happens.
•
The solenoid valve bridge will be disabled and all solenoid valves will be released.
•
An alarm signal is sent out through the appropriate pin connection.
•
This state is memorized and continues until the system is actively reset (by turning off the supply
voltage).
Passive fault monitoring:
•
A delay of 250 ms (PVEA: 750 ms) before anything happens.
•
The solenoid valve bridge will not be disabled but still control the main spool position.
•
An alarm signal is sent out through the appropriate pin connection.
•
This state is not memorized. When the erroneous state disappears, the alarm signal will turn to
passive again. However, the signal will always be active for a minimum of 100 ms when triggered.
To prevent the electronics from going into an undefined state, a general supervision of the power supply
and the internal clock frequency is made. This function applies to PVEH - and will not activate fault
monitoring:
1. High supply voltage – The solenoid valves are disabled when the supply voltage exceeds 36 V, and
the main spool will return/stay in neutral.
2. Low supply voltage – The solenoid valves are disabled when the supply voltage falls below 8.5 V,
and the main spool will return/stay in neutral.
3. Internal clock – The solenoid valves are disabled when the internal clock frequency fails, and the
main spool will return/stay in neutral.
The fault monitoring does not work if the supply voltage to PVEH is cut off - for example by a neutral
position switch. When using PVEH with passive fault monitoring it is up to the customer to decide on
the degree of safety required for the system (See Safety in Application for more information about
different degrees of safety).
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 21
Technical Information
PVG 120 Proportional Valve Group
Electrical Actuation
Fault monitoring specification
Type Fault
monitoring
PVEO No fault monitoring
PVEH Active 500 ms No fault Low < 2 V Green -
Passive 250 ms No fault Low < 2 V Green -
*
Measured between fault output pin and ground.
†
Reset needed
Delay
before
error out
Error mode Error
output
status
Input signal faults High ∼U
Transducer (LVDT) Constant red
Close loop fault
Input signal faults High ~U
Transducer (LVDT) Constant red
Close loop fault
Fault
output on
PVE*
DC
DC
LED light Memory†
*
Flashing red Yes
Flashing red No
†
PVEH, connection to fault monitoring output
Normal Fault
Transistor output function – Green Transistor output function – Red
A: External relay, B: Solenoid valve (e.g. PVPE) A: External relay, B: Solenoid valve (e.g. PVPE)
Via an external relay pin 3 can be connected to an electrically actuated valve which will relieve pump oil
flow to tank, e.g. PVPE.
Other possible connections:
a valve to relieve the LS signal
•
a signal lamp, an alarm horn
•
a pump cut-out, etc.
•
22 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Technical Characteristics
General
All characteristics and values in the technical information are typical measured results. For the hydraulic
system a mineral based hydraulic oil with a viscosity of 21mm2/s [102 SUS] and a temperature of 50°C
[122°F] was used.
PVP, pump side module
PVP, pressure relief valve characteristic
The pressure relief valve is adjustable within the 50-400 bar [725-6225 psi] range by means of a screw.
PVP, neutral flow pressure in PVP, open center
U = PVP for PVB oil flow > 180 l/min [47.6 US gal/min]
S = PVP, standard
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 23
Technical Information
PVG 120 Proportional Valve Group
Technical Characteristics
PVB, Basic Module
Oil flow characteristics
US= Signal voltage;
UDC= Supply voltage
Port conditions at rated oil flow
Port Metric units US units
A
B
C
D
D.I *
D.II **
* Closed center system with basic module for oil flow > 180 l/min [47.6 US gal/min].
** Open center system with basic module for oil flow > 180 l/min [47.6 US gal/min] and pump side module
155G5027 / 155G5028 /155G5029.
65 l/min [17.2 US gal/min]
95 l/min [25.1 US gal/min]
130 l/min [34.3 US gal/min]
180 l/min [47.6 US gal/min]
240 l/min [63.4 US gal/min]
210 l/min [55.5 US gal/min]
24 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Technical Characteristics
Load independent oil flow
Pressure drop Q T in neutral position /spools with open neutral position, (p). The oil flow Q is shown as a
function of the load (p).
Pressure drop A/B → T at full spool travel
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 25
Technical Information
PVG 120 Proportional Valve Group
Technical Characteristics
Pressure drop A/B → T, spools with open neutral position
PVLP, Shock Valve Characteristic (with Pressure Relief Valve)
PVLP, shock valve characteristic (with Pressure Relief Valve)
The shock valve PVLP is designed to absorb shock effects. Consequently, it shall not be used as a pressure
relief valve.
26 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Technical Characteristics
PVLP/PVLA, Suction Function
PVLP/PVLA, suction function characteristic
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 27
Technical Information
PVG 120 Proportional Valve Group
Hydraulic system examples
Example of PVG 120 with variable displacement pump
28 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Hydraulic system examples
Example of PVG 120 with fixed displacement pump
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 29
Technical Information
PVG 120 Proportional Valve Group
Other operating conditions
Hydraulic fluids for PVG
Oils
The main duty of the oil in a hydraulic system is to transfer energy; but it must also lubricate the moving
parts in hydraulic components, protect them against corrosion, and transport dirt particles and heat out
of the system. It is therefore important to choose the correct oil with the correct additives. This gives
problem-free operation and long working life.
Mineral oils
Danfoss Power Solutions recommends for systems with PVG 120 valves to use mineral-based hydraulic
oils containing additives: Type H-LP (DIN 51524) or HM (ISO 6743/4).
Non-flammable fluids
Phosphate-esters (HFDR fluids) can be used without special precautions. However, dynamic seals must be
replaced with FPM (Viton) seals. Please contact the Danfoss Power Solutions Sales Organisation if the PVG
120 valve is to be used with phosphate-esters.
The following fluids should only be used according to agreement with the Danfoss Power Solutions Sales
Organisation:
•
Water-glycol mixtures (HFC fluids)
•
Water-oil emulsions (HFB fluids)
•
Oil-water emulsions (HFAE fluids)
Biodegradable fluids
PVG 120 valves can be used in systems using rape-seed oil. The use of rape-seed oil is conditional on:
it complying with the demands on viscosity, temperature and filtration, etc.
•
the operating conditions being adapted to the recommendations of the oil supplier.
•
Before using other biodegradable fluids, please consult the Danfoss Power Solutions Sales Organisation.
Particle Content, Degree of Contamination
Oil filtration must prevent the particle content from exceeding an acceptable level, i.e. an acceptable
degree of contamination.
Maximum contamination for PVG 120 is 23/19/16 (see ISO 4406).
Calibration in accordance with the ACFTD method.
In our experience a degree of contamination of 23/19/16 can be maintained by using a filter fineness as
described in the next section.
Filtering
Effective filtration is the most important precondition in ensuring that a hydraulic system performs
reliably and has a long working life. Filter manufacturers issue instructions and recommendations. It is
advisable to follow them.
System filters
Where demands for safety and reliability are very high a pressure filter with bypass and indicator is
recommended. Experience shows that a 10 µm nominal filter (or finer) or a 20 µm absolute filter (or finer)
is suitable.
It is our experience that a return filter is adequate in a purely mechanically operated valve system.
The fineness of a pressure filter must be selected as described by the filter manufacturer so that a particle
level of 23/19/16 is not exceeded. See Particle content, degree of contamination for more information.
30 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Other operating conditions
The filter must be fitted with pressure gauge or dirt indicator to make it possible to check the condition of
the filter.
In systems with differential cylinders or accumulators the return filter must be sized to suit the max.
return oil flow. Pressure filters must be fitted to suit max. pump oil flow.
Internal filters
The filters built into PVG 120 are not intended to filter the system but to protect important components
against large particles.
Such particles can appear in the system as a result of pump damage, hose fracture, use of quickcouplings, filter damage, starting up, contamination, etc.
The filter that protects the pilot supply in the tank side module has a mesh of 125 µm. It is obtainable as a
spare part and is easy to replace.
The filter protecting the essential PVE parts has a mesh of 125 µm.
Conversion Factors
1 N•m = 885.1 lbf•in
1 N = 22.48 lbf
1 bar = 14.50 psi
1 mm = 0.0394 in
1 cm3 = 0.061 in
1 l = 0.22 UK gal
1 l = 0.264 US gal
°F = 1.8 • °C + 32
3
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 31
55.5[2.185]
T
P
21.5[0.846]
L
42[1.65]
120[4.72]
147[5.79]
220[8.66]
L
L
2
1
185[7.28]
147[5.79]
95[3.74]
68[2.68]
10.5[0.413]
38[1.50]
52.4[2.063]
50.8
26.2[1.031]
23.8[0.937]
27.8
66.5[2.618]
67[2.638]
73.5[2.893]
36.5[1.437]
A A
BB
T P
DC
J
K
57.2[2.252]
M
E
N
F
H
33.5
~165[6.50]
max.61[2.40]
69
[2.72]
37
44[1.73]
113.5[4.468]
28
G
105[4.13]
LX
T
33.5
PP
152[5.98]
158[6.22]
PG 9 [on-off ]
PG 11 [prop.]
DIN 43650
V310153.B
35.5
max. 262.5[10.335]
111[4.37]
25[0.98]
27[1.06]
15[0.59]
[1.46]
[1.398]
[1.319]
[1.319]
[1.10]
23.8[0.937]
[1.094]
38[1.50]
[2.000]
Technical Information
PVG 120 Proportional Valve Group
Dimensions
PVG 120 dimensions
PVB 1 2 3 4 5 6 7 8
170 [6.69] 237 [9.33] 304 [11.97] 371 [14.61] 438 [17.24] 505 [19.88] 572 [22.51] 639 [25.16]
263.5 [10.38] 330.5 [13.02] 397.5 [15.66] 464.5 [18.30] 531.5 [20.94] 598.5 [23.58] 665.5 [26.22] 732.55 [28.86]
255 [10.05] 322 [12.69] 389 [15.33] 456 [17.97] 523 [20.61] 590 [23.25] 657 [25.89] 724 [28.53]
L mm
[in]
L1 mm
[in]
L2 mm
[in]
Port
C 1 in SAE flange (210 bar) 15∕16–12 UN O-ring Boss (3045 psi)
32 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
31.5[1.240]
14(49)
32[1.25]
F
13[0.51]
108.5[4.272]
*
27(62)
99[3.90]
PVHPVMD/PVH
PBPA
*
120[4.72]
141[5.55]
max.372.5[14.665]
77[3.03]
max. 284[11.18]
23[0.91]
48.5[1.909]
48.5[1.909]
[1.06(2.44)]
*
[0.55(1.93)]
*
V310103.A
*
*
[0.413(1.791)]
10.5(45.5)
Technical Information
PVG 120 Proportional Valve Group
Dimensions
Port
D ¾ in SAE flange (415 bar) 11∕16–12 UN O-ring Boss (6020 psi)
E 1 in SAE flange (415 bar) 15∕16–12 UN O-ring Boss (6020 psi)
F G ¼ ½–20 UNF
G G 3∕
H M12; 18 mm deep
J M10; 17 mm deep
K M10; 17 mm deep
M M12; 18 mm deep
N G 3∕
PVG 120 Outline dimensions
8
8
¾–16 UNF
7
∕16–14 UNC; 0.7 in deep
3
∕8–16 UNC; 0.7 in deep
3
∕8–16 UNC; 0.7 in deep
7
∕16–14 UNC; 0.7 in deep
¾–16 UNF
F: G ¼ [1/2 –20 UNF]
* Dimensions in parenthesis apply to high basic modules.
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 33
37.5˚
67.5˚
97.5˚
127.5˚
157.5˚
187.5˚
19.5˚
19.5˚
V310018.A
22.5˚
52.5˚
82.5˚
112.5˚
142.5˚
172.5˚
19.5˚
19.5˚
V310014.A
Technical Information
PVG 120 Proportional Valve Group
Dimensions
PVM, Lever Positions
Base with an angle of 37.5° Base with an angle of 22.5°
34 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Modules and Code Numbers
PVP and PVPV, Pump Side Modules
Symbol Description
Open center PVP for pumps with fixed displacement.
Pressure gauge connection.
Open center PVP for oil flow exceeding
180 l/min [47.55 US gal/min].
For pumps with fixed displacement.
Pressure gauge connection.
Closed center PVP for pumps with variable
displacement.
Pressure gauge connection.
Closed center PVPV without pressure relief valve.
For pumps with variable displacement.
Pressure gauge connection.
Port type
Metric flange 155G5021
SAE flange 155G5037
O-ring boss 155G5023
Metric flange 155G5027
SAE flange 155G5029
O-ring boss 155G5028
Metric flange 155G5020
SAE flange 155G5038
O-ring boss 155G5022
Metric flange 155G5030
SAE flange 155G5032
O-ring boss 155G5031
Code number
Port connections:
P = 1 in SAE flange; 415 bar [11∕16–12 UN O-ring Boss; 6020 psi]
MA = G ¼ [½–20 UNF O-ring Boss]
LS = G 3∕8 [3∕4–16 UNF O-ring Boss]
PVP, Accessories for Open Center Pump Side Modules
Symbol Description Code number
– Prop., PVPD 155G5041
PVPH,
Hydraulically actuated relief valve
PVPE,
Electrically actuated relief valve.
Normally open solenoid valve.
12 V 155G5052
24 V 155G5054
155G5061
* Connection for
external pilot
pressure: available
with G1/4 thread
only.
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 35
Technical Information
PVG 120 Proportional Valve Group
Modules and Code Numbers
PVB, Basic Modules
Symbol Description Code number
No facilities for
shock valves A/B
(low modules)
Pressure compensated
Port connections:
A/B: 3/4 SAE flange; 415 bar
[1 1/16–12 UN O-ring Boss; 6020 psi]
Metric flange 155G6014 155G6005
SAE flange 155G6016 155G6007
O-ring boss 155G6015 155G6006
PVB, Accessories for Basic Modules
Symbol Description Code number
PVBP, plug 155G6081
Facilities for shock
valves A/B (high
modules)
PVBU, module for oil flow exceeding 180 l/min [47.6 US gal/min].
Connection for external LS pressure relief.
PVBC, connection for external LS pressure relief. 155G6082
PVBR, LS-pressure relief valve for ports A/B-port 155G6080
Port connection: G 1/4 available with G 1/4 thread only.
155G6035
36 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Modules and Code Numbers
PVLA, Suction Valve
Symbol Code number
155G1065
PVLP, Shock and Suction Valves for A/B Port Connections
Symbol Fixed setting
bar [psi]
50 [725] 155G0050
75 [1100] 155G0075
100 [1450] 155G0100
125 [1800] 155G0125
150 [2200] 155G0150
175 [2550] 155G0175
200 [2900] 55G0200
225 [3240] 155G0225
250 [3650] 155G0250
275 [4000] 155G0275
300 [4350] 155G0300
325 [4700] 155G0325
350 [5100] 155G0350
375 [5450] 155G0375
400 [5800] 155G0400
Code number
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 37
Technical Information
PVG 120 Proportional Valve Group
Modules and Code Numbers
PVBS, Main Spools
Symbol ISO Symbol Description Code number Size
A
65 l/min
[17.2 US
gal/min]
4-way, 3-position.
Closed neutral position
155G6452 155G6454 155G6456 155G6458
B
95 l/min
[25.1 US
gal/min]
C
130 l/min
[34.3 US
gal/min]
1)
D
180 l/min
[47.6 US
gal/min]
4-way, 3-position.
Throttled, open neutral
position
3-way, 3-position
P → B
1)
Main spool D is used for oil flow exceeding 180 l/min [47.6 US gal/min].
–
– –
155G6464 155G6466 155G6468
155G6476 155G6478
PVM, Mechanical Actuation
PVM, Mechanical Actuation
Symbol Description Code number
PVM,
Standard, spring centered mechanical actuation.
Individual oil flow adjustment to ports A and B.
PVM,
Mechanical actuation for hydraulically operated valves.
Individual oil flow adjustment to ports A and B.
22.5° 155G3040
37,5° 155G3041
22,5° 155G3050
37,5° 155G3051
PVMD, Cover for Mechanical Actuation
Symbol Description Code number
PVMD, cover for purely mechanically operated valve. 155G4061
PVH, Hydraulic Actuation
Symbol Description Code number
PVH,
cover for hydraulically operated valve.
G 1/
4
1
/2–20 UNF 155G4021
155G4022
38 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Modules and Code Numbers
PVHC, High Current Actuator
Symbol Description Code number
Hirschmann AMP Deutsch
PVHC 12 V – – 11110597
24 V – – 11110598
PVE, Electrical Actuation
Symbol Description Code number
Hirschmann AMP Deutsch
PVEO,
ON/OFF
12 V 155G4272 155G4282 11110601
24 V 155G4274 155G4284 11110652
PVEH, Proportional high.
Puls width modulation, short reaction time, low hysteresis,
active fault monitoring, inductive transducer
PVEH, Proportional high.
Puls width modulation, short reaction time, low hysteresis,
passive fault monitoring, inductive transducer
PVES Proportional Super.
Puls width modulation, short reaction time, 0% hysteresis
passive fault monitoring, inductive transducer
PVED-CC, CAN-Bus SAE J 1939/ISOBUS – 11111117 11111113
PVT, tank side module
PVT, tank side module
Symbol Description
Upper part without active elements Metric flange 155G7020
Upper part with LX connection Metric flange 155G7023
155G4092 155G4094 –
155G4093 155G4095 11111206
11111210 – 11111207
Port type
SAE flange 155G7022
O-ring boss 155G7021
SAE flange 155G7025
O-ring boss 155G7024
Code number
Lower part without active elements Mounting 155G7060
Mounting thread
UNF
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 39
155G7062
Technical Information
PVG 120 Proportional Valve Group
Modules and Code Numbers
PVT, tank side module (continued)
Symbol Description
Lower part of PVE,
pilot oil supply for electrical actuations.
Filter mesh: 125 µm
Port type
Mounting thread
metric
Mounting thread
UNF
Code number
155G7040
155G7042
Lower part of PVH,
pilot oil supply for hydraulic actuations.
Filter mesh: 125 µm
Mounting thread
metric
Mounting thread
UNF
155G7043
155G7044
Port connections:
T = 1 in SAE flange, 210 bar [15/16–12 UN O-ring Boss, 3045 psi];
PP = G 3/8 [3/4–16 UNF O-ring Boss]
LX = G 3/8 [3/4–16 UNF O-ring Boss]
PVAS, Assembly Kit
Code number 155G...
Nr. of modules
Tie bolts and seals 155G8031 155G8032 155G8033 155G8034 155G8035 155G8036 155G8037 155G8038
1 PVB 2 PVB 3 PVB 4 PVB 5 PVB 6 PVB 7 PVB 8 PVB
40 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
P
LS
P
T
f
e
a
0
1-8
d
10
9
11
c
b
V310173.A
Technical Information
PVG 120 Proportional Valve Group
PVG 120 Modules Selection Chart
PVG 120 module selection chart
PVG 120 modules exploded view
PVB, high basic module
SAE
flange
Facilities for shock valves AB 155G6007 155G6006 155G6005 10.2 [22.5]
PVB, low basic module
SAE
flange
No facilities for shock valves AB 155G6016 155G6015 155G6014 8.9 [19.6]
O-ring
Boss
O-ring
Boss
Metric flange Weight
kg [lb]
Metric flange Weight
kg [lb]
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 41
Technical Information
PVG 120 Proportional Valve Group
PVG 120 Modules Selection Chart
Accessory modules for PVB
Plug, PVBP 155G6081 0.4 [0.9]
LS
press. relief valve, PVBR 155G6080
A/B
External LS connection, PVBC 155G6082
Module for oil flow > 180 l/min [47.6 US gal/min], PVBU 155G6035
PVBS, mechanical actuation
Oil flow, l/min [US
gal]
Code number
A
65 [17.2]
155G6452 155G6454 155G6456 155G6458
B
95 [25.1]
155G6464 155G6466 155G6468
C
130 [34.3]
Weight, kg [lb]
D
180 [47.6]
155G6476 155G6478
Weight, kg [lb] 0.35 [0.8]
PVM, mechanical actuation
PVM + PVMD or
PVM + PVE
PVM + PVH
Weight
155G3040
155G3041
155G3050
155G3051
kg [lb] 0.5 [1.1]
22.5°
37.5°
22.5°
37.5°
PVMD, cover for PVM
Code number
155G4061 0.3 [0.7]
Weight, kg [lb]
PVT, tank side module
Code number
Upper part excl. LX connection 155G7022 155G7021 155G7020 4.6 [10.1]
Upper part incl. LX connection 155G7025 155G7024 155G7023
Lower part incl. pilot oil supply for PVE 155G7042 155G7040 4.4 [9.7]
Lower part excl. pilot oil supply for PVE 155G7062 155G7060
Lower part incl. pilot oil supply for PVH 155G7044 155G7043
SAE
flange
O-ring
Boss
Metric
flange
Weight
kg [lb]
42 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
PVG 120 Modules Selection Chart
PVP, pump side module
Code number
Open
centre
Closed
centre
Accessory modules for open centre PVP
Description Code number
Plug, PVPD 155G5041 0.4 [0.9]
Hydraulic relief valve, PVPH 155G5061 0.5 [1.1]
Electrical relief valve, PVPE 12 V 155G5052 0.7 [1.5]
Excl. PVPD, PVPH, PVPE 155G5023 155G5037 155G5021 10.0 [22.1]
For PVB-oil flow > 180 l/min [47.6
US gal/min]
Excl. PVPD, PVPH, PVPE
Incl. pressure relief valve and plug
PVPD
Excl. pressure relief valve 155G5031 155G5032 155G5030 11.0 [24.3]
O-ring
Boss
155G5028 155G5029 155G5027
155G5022 155G5038 155G5020 10.2 [22.5]
24 V 155G5054
SAE
flange
Metric flange Weight
kg [lb]
Weight
kg [lb]
PVH, cover for PVRHH
Port Code number
1/2 in - 20 UNF 155G4021 0.4 [0.9]
G 1/4 155G4022
Weight, kg [lb]
PVE, electrical actuation
Connector PVEH fault monitoring PVEO voltage
Active Passive 12 V 24 V
Hirschmann 155G4092 155G4093 155G4272 155G4274
AMP 155G4094 155G4095 155G4282 155G4284
Weight, kg [lb]
1.25 [2.76] 1 [2.2]
PVLA suction valve A/B
Code number
155G1065 0.2 [0.4]
Weight
kg [lb]
PVLP, shock and suction valve A/B
Pressure setting
bar [psi]
50 725 155G0050
75 1100 155G0075
100 1450 155G0100
125 1800 155G0125
150 2200 155G0150
Code number
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 43
Technical Information
PVG 120 Proportional Valve Group
PVG 120 Modules Selection Chart
PVLP, shock and suction valve A/B (continued)
Pressure setting
175 2550 155G0175
200 2900 155G0200
225 3250 155G0225
250 3650 155G0250
275 4000 155G0275
300 4350 155G0300
325 4700 155G0325
350 5100 155G0350
375 5400 155G0375
400 5800 155G0400
Weight, kg [lb]
PVAS, assembly kit
PVB’s 1 2 3 4 5 6 7 8
Code number
Weight kg 0.8 1.0 1.1 1.2 1.4 1.7 1.9 2.1
[lb] [1.8] [2.2] [2.4] [2.6] [3.1] [3.7] [4.2] [4.6]
0.175 [0.386]
155G8031 155G8032 155G8033 155G8034 155G8035 155G8036 155G8037 155G8038
44 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
Order specification
Ordering of modules for oil flow exceeding 180 l/min [47.6 US gal/min]
Modules for pump with fixed displacement
1. Ordering: Order accessory module 155G6035, main spool D, and pump side modules 155G5027 /
155G5028 / 155G5029.
2. Conversion: In open center systems a max. oil flow exceeding 180 l/min [47.6 US gal/min] can be
achieved by changing the following parts in the pump side and basic modules:
Open center pump side module
•
– Pressure adjustment spool
– The springs behind the pressure adjustment spool
– The plug behind the pressure adjustment spool
Parts from kit 155G5035 may be used.
Closed center pump side module (A closed center pump side module can be changed into an
•
upgraded open center pump side module by means of kit 155G5035.)
Basic module
•
– Spring behind pressure compensator
– The plug behind the pressure compensator
Order Form
Spring and plug with code number 155G6035 (PVBU, accessory module).
Modules for pump with variable displacement
1. Ordering: Order accessory module 155G6035 and main spool D.
2. Conversion:In closed center systems a max. oil flow exceeding 180 l/min [47.6 US gal/min] can be
achieved by changing the following basic module parts:
– The spring behind the pressure compensator.
– The plug behind the pressure compensator.
The code number of the spring and plug is 155G6035 (PVBU, accessory module).
An order form for PVG 120 hydraulic valve is shown on next page. The form can be obtained from the
Danfoss Power Solutions Sales Organisation.
The module selection chart on the next page and the order form are divided into fields.
Each module has its own field:
0: PVP, pump side modules
d: PVPD, PVPH and PVPE, accessory modules
1-8: PVB, basic modules
e: PVBS, main spools
f: PVBP, PVBR, PVBU and PVBC, accessory modules
a: PVM, mechanical actuation
c: PVMD, cover for mechanical operation; PVH, cover for hydraulic operation; PVEO and PVEH, electrical
actuations
b: PVLP, shock and suction valve; PVLA, suction valve
9: PVT, tank side module
10: PVAS, assembly kit
Please state:
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Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 45
Technical Information
PVG 120 Proportional Valve Group
Order specification
•
Code numbers of all modules required
•
Required setting (p) for pump side module
•
Required setting of LS
Reordering
The space at the top right-hand corner of the form is for Danfoss to fill in. The code number for the whole
of the specified valve group (PVG No.) is entered here. In the event of a repeat order all you have to do is
enter the number Danfoss has given on the initial confirmation of order.
If PVG 120 is to be used with phosphate-esters this must be stated on the order form.
pressure relief valves, if accessory module PVBR is ordered.
A/B
46 | © Danfoss | March 2017 520L0356 | BC00000040en_US1002
Technical Information
PVG 120 Proportional Valve Group
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002 | 49
Local address:
Danfoss
Power Solutions GmbH & Co. OHG
Krokamp 35
D-24539 Neumünster, Germany
Phone: +49 4321 871 0
Danfoss
Power Solutions ApS
Nordborgvej 81
DK-6430 Nordborg, Denmark
Phone: +45 7488 2222
Danfoss
Power Solutions (US) Company
2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239 6000
Danfoss
Power Solutions Trading
(Shanghai) Co., Ltd.
Building #22, No. 1000 Jin Hai Rd
Jin Qiao, Pudong New District
Shanghai, China 201206
Phone: +86 21 3418 5200
Comatrol
www.comatrol.com
Turolla
www.turollaocg.com
Hydro-Gear
www.hydro-gear.com
Daikin-Sauer-Danfoss
www.daikin-sauer-danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
©
Danfoss | March 2017 520L0356 | BC00000040en_US1002
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