How it Works
Danfoss
Loading...
OSPE
Data sheet
2 pgs740.51 Kb0
User guide
39 pgs3.91 Mb0
User guide [ja]
39 pgs2.93 Mb0
Data sheet [zh]
2 pgs346.05 Kb0
Service guide
48 pgs7.51 Mb0
User guide [zh]
40 pgs4.21 Mb0
Table of contents
Loading...

Danfoss OSPE User guide

Technical Information
Steering
OSPE Steering Valve
www.danfoss.com
Technical Information
OSPE Steering Valve
Revision history Table of revisions
Date Changed Rev
February 2022 Updated Order Specifications and Code Numbers to match Design Center Configurator 0701
July 2020 Updated revision number to match with online catalog 0606
November 2016 Minor updates 0503
Changed document number from 'BC00000066' to 'BC152886485467' 0504
receiver, joystick and mini wheel
February 2016 Updated with PVED-CLS content; removed SASA information 0501
May 2015 Dimension drawing updated DB
July 2014 Changed to Danfoss layout DA
July 2011 Flow characteristics added CA
October 2009 Major change BA
August 2009 First edition AA
0502
2 | © Danfoss | February 2022 BC152886485467en-000701
Technical Information
OSPE Steering Valve

Contents

A wide range of steering components
Conversion factors........................................................................................................................................................................... 5
Survey of literature on Danfoss steering components.......................................................................................................5
General Information
General steering valve type OSPE.............................................................................................................................................. 6
Versions
Overview..............................................................................................................................................................................................7
OSPEC LS/LSRM with PVED-CLS..................................................................................................................................................8
OSPEF LS with PVED-CLS............................................................................................................................................................... 9
OSPEDC LSRM with PVES............................................................................................................................................................ 10
OSPEDF LS with PVES................................................................................................................................................................... 11
PVED-CL/CLS Function
OSPE steering valve.......................................................................................................................................................................13
OSPEC LSRM with PVED-CLS......................................................................................................................................................14
Neutral position.........................................................................................................................................................................14
Steering right with steering wheel.....................................................................................................................................16
Steering right with EH.............................................................................................................................................................18
PVES and PVED-CLS, electrical actuation.............................................................................................................................. 19
Closed loop control.......................................................................................................................................................................20
Principle.............................................................................................................................................................................................20
Inductive transducer, LVDT........................................................................................................................................................ 20
Integrated pulse width modulation........................................................................................................................................20
Technical Data
OSPE....................................................................................................................................................................................................21
Weights..............................................................................................................................................................................................22
PVES.................................................................................................................................................................................................... 22
PVED-CLS...........................................................................................................................................................................................23
Hysteresis, PVES and PVED-CLS................................................................................................................................................ 23
PVES.................................................................................................................................................................................................... 24
Coil of control valve for mode select...................................................................................................................................... 24
Dimensioning
Dimensioning steering system with OSPE steering valve...............................................................................................27
Technical Characteristics
EH-directional spools of OSPE...................................................................................................................................................28
Pilot pressure relief valve: (P - T, Qp) characteristic...........................................................................................................28
Pressure drop P-EF for Danfoss OSPE valve..........................................................................................................................29
Dimensions
OSPE dimensions with PVED-CLS.............................................................................................................................................30
OSPE dimensions with PVED-CC/CL........................................................................................................................................31
Hydraulic systems System Safety
Emergency steering...................................................................................................................................................................... 35
OSPE and system safety PVES ...................................................................................................................................................35
Safety considerations................................................................................................................................................................... 36
Order Specification
Variants and order specification...............................................................................................................................................37
OSPE master model code (MMC) breakdown......................................................................................................................38
©
Danfoss | February 2022 BC152886485467en-000701 | 3
Technical Information
OSPE Steering Valve

A wide range of steering components

Danfoss is one of the largest producers in the world of steering components for hydrostatic steering systems on off-road vehicles. Danfoss offers steering solutions both at component and system levels. Our product range makes it possible to cover applications of all types, ranging from ordinary 2 wheel steering (also known as Ackermann steering) to articulated steering, automatic steering (for example, by sensor) and remote controlled steering via satellite. We can offer more than 1,800 different steering units and 250 different priority valves categorized in types, variants and sizes.
Danfoss offers:
For hydrostatic steering systems:
Product type Displacement Rated Flow Steering Pressure Mini steering units
Steering units
Priority valves
Pilot operated flow­amplifiers (factors: 4, 5, 8, or 10)
Pilot operated steering valves
32 – 100 cm3/rev [1.95 –6.10 in3/rev]
40 – 1200 cm3/rev [2.44 to 73.2 in3/rev]
–
– 240 and 400 l/min [63.4 and
–
max. 20 l/min [5.28 US gal/min]
max. 100 l/min [26.4 US gal/min]
40, 80, 120, 160, 320 l/min [10.6, 21.1, 31.7, 42.3, 84.5 US gal/min]
105.7 US gal/min]
max. 100 l/min [26.4 US gal/min]
max. 140 bar [2030 psi]
max. 240 bar [3481 psi]
max. 350 bar [5076 psi]
max. 240 bar [3480 psi]
max. 250 bar [3625 psi]
For electrohydraulic steering systems
Product type Displacement Rated flow Steering pressure Pilot operated steering
valves Integrated electrically
operated steering valve Electrically operated
steering valve
- 100 l/min [26.4 US gal/min] 250 bar [3625 psi]
100 - 500 cm3/rev [6.10 - 30.51 in3]
- 70 l/min [18.5 US gal/min] 250 bar [3045 psi]
50 l/min [13.2 US gal/min] 210 bar [3045 psi]
4 | © Danfoss | February 2022 BC152886485467en-000701
Technical Information
OSPE Steering Valve
A wide range of steering components
Characteristic features for steering units:
Low steering torque: from 0.5 to 3 N•m in normal steering situations
•
Low noise level
•
Low pressure drop
•
Many types available: Open center Non-reaction, Open center Reaction, Power Beyond, Closed center
•
Non-reaction, Load Sensing, Load Sensing Reaction One or more built-in valve functions: relief valve, shock valves, suction valves, non-return valve in P-
•
line and LS-line Optional port connections according to ISO, SAE or DIN standards
•
Characteristics for EH steering systems with OSPE, EHPS, and EHi:
Possibility of GPS, row sensor, variable steering ratio and joystick steering
•
Possibility of manual steering even on very heavy vehicles
•
EHPS:
•
High steering pressure requiring smaller cylinders and flow
‒
Low pilot pressure and flow giving extremely low noise in the cabin
‒
Combined with Danfoss PVG 32 proportional valve
‒

Conversion factors

1 N•m = [8.851 lbf•in] 1 l = [0.264 US gal] 1 N = [0.2248 lbf] 1 bar = [14.5 psi] 1 mm = [0.0394 in] °F = [1.8°C + 32] 1 cm3 = [0.061 in3]

Survey of literature on Danfoss steering components

Detailed data on all Danfoss steering components and accessories can be found in our steering component catalogs, which is divided in to the following individual sub catalogs:
General information Steering components
Technical data on open center, and closed center steering units OSPB, OSPC, and OSPD Technical data on load sensing steering units, priority valves and flow
amplifiers Technical data on priority valves OLS Technical data on priority flow amplifiers OSQ Technical data on valve blocks OVPL and OVR Technical data on load sensing steering units with amplification OSPU Technical data on steering units with zero dead band OSPS Technical data on steering units with integrated priority valve VSPP Technical data on hydraulic and EH pilot operated steering valves,
electrical actuation modules and appropriate steering units. Technical data on combined steering unit/EH steering valves and steering
wheel sensors Technical data on electrohydraulic steering valves EHi Technical data on steering wheel sensors SASA
OSPB, OSPC, OSPF, OSPD, OSPDF, OSPL, OSPBX, and OSPLX
EHPS, EHPS w. OLS 320, PVE for EHPS and OSPCX
OSPE
For technical information on individual variants, please contact the Danfoss Sales Organization.
©
Danfoss | February 2022 BC152886485467en-000701 | 5
Technical Information
OSPE Steering Valve

General Information

General steering valve type OSPE

On tractors, combine harvesters, maize harvesters and other simulate vehicles there is often a need for electrically actuated steering to make automatic GPS controlled steering possible. Also manual steering with variable ratio is an often wanted feature to improve productivity and driver comfort.
For this purpose Danfoss has developed a combined steering unit and electrohydraulic steering valve named OSPE: OSP for normal manual steering wheel activated steering and E for electrohydraulic steering activated by electrical input signal either from GPS or vehicle controller or from steering wheel sensor (Danfoss type SASA) for variable steering ratio. In variable steering mode, the electrohydraulic valve part adds flow to the metered out flow from the steering unit part of the OSPE.
OSPE has build in safety function in form of cut off valve, which makes unintended steering from Electro hydraulic valve part impossible. The OSPE is the right steering element first of all to build up steering system with very high safety level and so to be able to fulfill legislation demands such as those in EU Machinery Directive 2006/42/EC.
OSPE is offered with the PVED-CLS steering valve controller. PVED-CLS offers integrated, flexible software-based electrohydraulic steering functionality which can be tailored to any off-road vehicle type by software parameterization. The PVED-CLS also works as a certified Safety Controller. For further details about PVED-CLS, see OSPE with PVED-CLS Steering Valve Controller Data Sheet, AI152986484866.
In cases where space do not allow room enough for OSPE, an ordinary OSP non-reaction steering unit combined the EH-Electrohydraulic In-Line steering valve is an alternative. EH valves are offered with the same safety functions as OSPE. Please contact Danfoss sales organization.
6 | © Danfoss | February 2022 BC152886485467en-000701
Technical Information
OSPE Steering Valve

Versions

Overview

Steering valve OSPE and electrical actuation module PVE
Steering unit part
1
Version
OSPEC xxx LS/LSRM “C”-dynamic load sensing, non-reaction or reaction (RM) Single OSPEF xxx LS/LSRM “F”-dynamic load sensing, non-reaction or reaction (RM) Single OSPEDC xx/yyy LS/LSRM “C”-dynamic load sensing, non-reaction or reaction (RM) Dual OSPEDF xx/yyy LS/LSRM “F”-dynamic load sensing, non-reaction or reaction (RM) Dual
1
x denotes first gear set, y denotes secondary gear set in OSPED (dual displacement) configurations.
EH-part of OSPE in combination with any OSPE
Spool type Static load sensing PVE actuator
2
The EH static load sense and OSP dynamic load sense signals are internally resolved by a PVFC spool.
Priority valve in OSPE in combination with any OSPE
Dynamic If priority valve is present elsewhere in system, OSPE can be without priority valve.
Spool/sleeve type Gear set
2
PVES, PVED-CC, PVED-CLS
©
Danfoss | February 2022 BC152886485467en-000701 | 7
P301 168
L
R
LS
TE
PE
PVED-CLS
Electronics
P T L
Lr
P
Rr
T
R
OSP
LS
EH
EF
LS
Technical Information
OSPE Steering Valve
Versions

OSPEC LS/LSRM with PVED-CLS

This version is preferred for front wheel steered vehicles, like tractors, where self-alignment steering effect is desired. Reaction type steering resembles a car where the direction of travel will continue straight ahead when ever the steering wheel is not touched. The reaction concept in any OSPE steering units is based on Danfoss RM technology. The reaction effort is selectable by help of the solenoid valve for activating EH steering:
•
•
Road mode: When EH steering is powered off, then OSPE behaves the same as a Reaction unit Field mode: When EH steering is powered on, then OSPE behaves the same as a Non-reaction unit
8 | © Danfoss | February 2022 BC152886485467en-000701
P301 170
L
R
LS
TE
PE
PVED-CLS
Electronics
P T L
P
T
R
OSP
LS
EH
EF
LS
Lr
Rr
Technical Information
OSPE Steering Valve
Versions

OSPEF LS with PVED-CLS

This version is preferred for rear wheel steered vehicles, like combines. In both modes:
Road mode: When EH steering is unpowered
•
Field mode: When EH steering is powered
•
The steering unit part behaves as a Non-reaction steering unit. The “F”-spool type is preferred for steering systems where high level of negative steering forces may be present e.g. articulated steered vehicles.
©
Danfoss | February 2022 BC152886485467en-000701 | 9
P
LS
TE
T L R
EH
PVES
Electronics
OSP
L
R
LS
PE
EF
Rr
Lr
P
P301 171
Technical Information
OSPE Steering Valve
Versions

OSPEDC LSRM with PVES

This version is preferred for front wheel steered vehicles, like tractors, where self-alignment steering effect is desired. Only difference compared to OSPEC LSRM is that “D” type has 2 gear wheel sets (rotary meters). Should the pump supply be lost, only one gear set is active for emergency steering. In normal steering situations both gear sets are active.
10 | © Danfoss | February 2022 BC152886485467en-000701
P
LS
TE
T L R
EH
PVES
Electronics
OSP
L
R
LS
PE
P
P301 172
Technical Information
OSPE Steering Valve
Versions

OSPEDF LS with PVES

This version is preferred for rear wheel steered and articulated vehicles. Only difference compared to OSPEF LS is that “D” type has 2 gear wheel sets (rotary meters). This version however is shown without priority valve.
©
Danfoss | February 2022 BC152886485467en-000701 | 11
Technical Information
OSPE Steering Valve

PVED-CL/CLS

Only promote PVED-CLS for new applications. PVED-CL is only used in existing codes established until start of 2015. For details about PVED-CLS, see OSPE with PVED-CLS Steering Valve Controller Data Sheet, AI152986484866.
OSPE with an electrical programmable module (PVED-CLS) the following steering features in electro hydraulic steer mode/field mode are possible:
GPS-steering
•
Row sensor/ camera steering
•
Joy stick or mini st. wheel steering
•
Variable steering ratio
•
Speed depending steering ratio
•
12 | © Danfoss | February 2022 BC152886485467en-000701
Loading...
+ 27 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use