EHPS Steering Valve PVE Actuation Module OSPCX CN
Contents
1. 150 575 14 The joystick must be equipped with a neutral position contact to ensure that the PVES is not under tension in neutral position PVRES joystick has a neutral position contact See Technical information for joysticks 520L0554 520L0521 Rev CA Oct 2009 33 6 PANES Technical Information System Safety 34 Electrical actuation module Directional spool Shock valves Suction valves Pilot pressure reduction valve for steering unit Metering valve Priority valve spool Priority valve spring Emergency steering valve Pilot pressure relief valve Check valve for emergency steering Check valve in LS line Shuttle valves EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Valve EHPS and Electrical Actuation PVE for EHPS Emergency Steering Ck OS D a E ot Ut ru Ts P 7 OSPCX CN P301 023 When the pump oil supply fails the steering unit can be used as a hand pump depending on the weight of vehicle When steering the steering unit still gets oil from Ps2. UNF port version ISO 11926 1 Y P EF 1 6 12 UN 19 mm 0 75 in En Jer er o EI eo eo Ps Ts T CL CR L R Bol i A amp 34 16 UNF 14 mm 0 55 in deep Ss LS 746 20 UNF 11 5 mm 0 45 in lo a deep DE f x i All versions 150H09 12 A M8 1 25 10 mm 0 39 in deep B M8 1 25 10 mm 0 39 in deep Type 1 has only one P connector on PVE The mounting surface for the EHPS must be plane No spots exceeding the height of the area round the three M8 bolt holes allowed amie ann i 14 0 55 Buy a 68 2 68 m w 83 5 3 287 lt 31 870 47 5 1 870 4 0 17 U 78 3 07 I 1 mn Pe 83 5 3 287 47 5 1 870 6 47 5 1 870 gt Vy org j o N 150H11 11 520L0521 Rev CA Oct 2009 6 SAUER Dimensions G port version G DIN 3852 2 P EF G 3 4 16 mm 0 63 in deep Ps Ts T CL CR L R G 2 14mm 0 55 in deep LS G 1 4 12 mm 0 48 in deep Metric port version ISO 6149 1 P EF M27 2 19 mm 0 75 in deep Ps Ts T CL CR L R M18 1 5 14 5 mm
3. Name Vehicle Potential pcs year Completed by Date Your company Type 1 PVES Type 2 PVED CL Type 0 none Connector Connector Actuation module AMP A AMP A 20 5 40 5 40 8 60 8 60 10 80 8 80 10 Directional spool Stand alone SA For PVG PVG For OLS 320 OLS Housing basic G Metric M UNF Housing EHPS threads Housing OLS 320 threads SAE Metric M UNF if any OLS 320 Relief valves setting 100 110 120 130 140 150 160 170 180 190 200 210 220 240 250 bar Shock valves setting 160 175 190 210 230 240 250 265 280 300 320 bar Yes PB No Unit painted black Type 2 Contact Sauer Danfoss Sales Organization for software version and vehicle specific parameters to be downloaded in PVED CL 38 520L0521 Rev CA Oct 2009 6 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit DANFOSS Technical Information Actuation module Directional spool Housing basic Housing EHPS threads Housing OLS 320 if any OLS threads Relief valve setting EHPS Shock valves setting Unit painted black Please fill in specification for your EHPS Steering Valve EHPS and Electrical Actuation PVES for EHPS Alternatively specify your EHPS by the following destinations as in the example below EHPS Type1A 80 8 os M M 240 320 PB EHPS
4. T F4 78 5 3 091 23 5 0 925 i 113 4 45 gt lt 73 2 87 LS 7 6 20 UNF 11 5 mm deep 8013 15 mpae 4711 85 gt EF lt X P x oom gt 4T 5 1 870 LS D T Metric port version ISO 6149 1 P EF M33 2 p x 943 mm in LS M12 1 5 11 5 mm deep 30 1 181 pet 54 2 13 e UNF port version ISO 11926 1 P EF 1 56 12 UN x 949mm in LS 7 6 20 UNF 11 5 mm deep 74 2 91 J 37 1 46 gt 12614 96 gt 68 2 68 gt All versions A Bottom side fixing holes M8 x qJ 1 25 10 mm deep see page 29 150H24 13 Type 2 has two connectors on PVE 520L0521 Rev CA Oct 2009 31 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Hydraulic Systems EHPS type 0 stand alone and OSPCX CN steering unit CL EHPS type 0 r En LIS 2 R FULTS T Ps EL IB
5. pee Ps Ts EF P LS T P301 028 8 520L0521 Rev CA Oct 2009 6 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit DANFOSS Technical Information Versions Steering Valve EHPS and Electrical Actuation PVE for EHPS EHPS type 1 hydrostatic and electro hydraulic steering system This system consists of an EHPS valve type 0 equipped with an electrical module PVES for activating the EHPS valve There are 2 possibilities of steering either hydraulic with the steering wheel OSPCX CN or electrically using a signal from for example a joystick or a mini steering wheel Input from the steering wheel OSPCX CN will always have highest priority Steering cylinder 150 566 10 PVES CL CR EHPS type 1 Electronics Ps Ts EF P ES T P301 026 520L0521 Rev CA Oct 2009 SAUER DANFOSS Versions 10 EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS EHPS type 2 hydrostatic and electro hydraulic steering system This system consists of an EHPS valve type 0 equipped with an electrical programmable module PVED CL for activating the EHPS valve There are many possibilities of steering With the steering wheel either pure hydraulic by help of the OSPCX CN steering unit or electro hydraulic by help of the SASA
6. Hi ih OSPCX CN P301 021 When moving the directional spool 3 the LS signal will be connected to the steering pressure CL The pressure will then increase in the spring chamber of the priority valve and the priority valve spool 7a will be pushed towards the right side Consequently oil will flow through CF from the priority valve to the directional spool 3 Cil will now push the steering cylinder rod out and it will cause steering to the left side Return oil from the opposite cylinder site will stream into the CR port through the directional spool 3 and into the right end of the metering valve 6 The metering valve spool is moved to the left and the main stream from CR can pass through the metering valve into the tank The metering valve needs 12 bar to move This return pressure is used for feeding an electrical actuation module PVES in a EHPS type 1 system When the metering valve is open it also leads pilot oil from the steering unit to the tank When the steering cylinder has reached end stop no oil will pass through the CR port and the control pressure for the metering valve 6 will be reduced The metering valve will now move to the right and the valve is closing the tank connection and the pilot oil flow will be blocked This way you will feel the end stop in the steering wheel When turning right the movement of the directional spool 3 will be opposite All other functions are equal as when steering left Whe
7. 317 12 48 gt lt 4 3 0 17 qO 150H12 13 gt 5 S x E S PL us Han LS A i 7 X 7 lt A max 292 11 5 150H13 11 PVB 1 2 3 4 5 6 7 8 L mm 208 256 304 352 400 448 496 544 1 in 8 19 10 08 12 00 13 86 15 75 17 64 19 53 21 42 520L0521 Rev CA Oct 2009 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Dimensions EHPS Type 1 and 2 with OLS 320 EHPS G port version G DIN 3852 2 n SUE SUE 30 95 3 74 Lm 85 3 35 gt P EF G 34 16 mm deep gt 4750 870 ee Ps Ts T CL CR L R G 7 14 mm deep LS G 12 mm deep Metric port version ISO 6149 1 P EF M27 2 19 mm deep m Ps Ts T CL CR L R M18 1 5 14 5 mm deep LS M12 1 5 11 5 mm deep 163 6 42 3 55 2 17 UNF port version ISO 11926 1 P EF 1 16 12 UN 19 mm deep Ps Ts T CL CR L R 34 16UNF 14 et mm deep LS 7 6 20 UNF 11 5 mm deep S 31 1 22 4 38 1 50 het 68 2 68 23619 29 gt OLS 320 SAE port version P EF 1 in SAE flange M10 threads LS G 12 mm deep or LS M12 1 5 11 5 mm deep or
8. 57 2 24 29 1 14 44 1 73 gt MP L 102 4 02 150 108 10 Steering unit L1 mm in L2 mm in OSPCX 50 CN 126 4 96 6 5 0 26 OSPCX 60 CN 128 5 04 9 1 0 36 OSPCX 70 CN 128 5 04 9 1 0 36 OSPCX 80 CN 129 5 08 10 4 0 41 OSPCX 100 CN 132 5 20 13 0 0 51 520L0521 Rev CA Oct 2009 C SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit gt DANFOSS Technical Information Notes Notes 520L0521 Rev CA Oct 2009 43 SAUER DANFOSS Products we offer e Bent Axis Motors e Closed Circuit Axial Piston Pumps and Motors e Displays e Electrohydraulic Power Steering e Electrohydraulics e Hydraulic Power Steering e Integrated Systems e Joysticks and Control Handles e Microcontrollers and Software e Open Circuit Axial Piston Pumps e Orbital Motors e PLUS 1 GUIDE e Proportional Valves e Sensors e Steering e Transit Mixer Drives Members of the Sauer Danfoss Group Comatrol www comatrol com Schwarzm ller Inverter ww w schwarzmueller inverter com Turolla www turollaocg com Hydro Gear www hydro gear com Sauer Danfoss Daikin www sauer danfoss daikin com 520L0521 Rev CA Oct 2009 Sauer Danfoss is a global manufacturer and supplier of high quality hydraulic and electronic components We specialize in providing state of the art technology and solutions that excel in the harsh operating conditions of the mobile off highway market Buildin
9. P T P T psi n bar A 4000 275 250 3500 225 A 30007 00 B 2500 175 150 2000 125 1500 499 1000 19 0 Qp 0 10 20 30 40 50 60 70 80 90 100 110 120 l min F Qp 0 5 10 15 20 25 30 US gal min 150H15 11 520L0521 Rev CA Oct 2009 SAUER 5 DANFOSS Pressure Drop P EF for OLS integrated in EHPS Pressure Drop P EF for OLS 320 Static Priority Valve flanged on EHPS EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Pressure drop P EF for Sauer Danfoss EHPS valve This data comes from measurements on a representative sample of EHPS valves from production Oil with viscosity of 21 mm s 102 SUS at 50 C 122 F was used during measuring Measurement made when pressure on the LS connection is zero The minimum curve applies when the pressure on the EF connection is higher than the actual control spring pressure The curve for control spring pressure of 10 bar 145 psi applies when pressure on the EF port is zero P EF P EF psi bar 32 10 bar 4504 145 psi 4001 28 350 4 24 300 59 250 4 16 200 12 1501 8 1004 min so 4 zu 0 0 Qp 0 10 20 30 40 50 60 70 80 90 100 110 120 l min fi cs Qp 0 5 10 15 20 25 30 US gal min 150H14 10 P EF P EF psi A bar 32 450 10 ba
10. These tank connections are needed to ensure that directional spool of EHPS moves properly into neutral after ending steering input signal to PVE 520L0521 Rev CA Oct 2009 35 SAUER DANFOSS System Safety continued 36 EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Fault monitoring A fault monitoring system is provided in all PVES and PVED CL modules The system is available as passive fault monitoring type which provides a warning signal only Passive fault monitoring systems are triggered by three main events Input signal monitoring The PVES input signal voltage is continuously monitored The permissible range is between 1596 and 8596 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 gt 12 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
11. 2009 SAUER 6 DANFOSS Technical Information Technical Data PVED CL Hysteresis PVES and PVED CL EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Valve EHPS and Electrical Actuation PVE for EHPS Electrical Unit Min Max Required supply voltage VDC 11 32 Required current with magnetic valves enabled A 1 0 3 Required current with magnetic valves disabled A 0 1 0 03 Power consumption Ww 7 10 Power consumption magnetic valves off Ww max 0 3 Signals Stabilized voltage supply VDC 4 80 5 20 Max current taken from stabilized voltage supply mA 100 Digital conversion of signals at AD1 amp 2 VDC 0 to 5 VDC into 0 1023 10 bit Available baud rates to CAN Kilo bit s 125 250 500 Performance Spool position Hysteresis in of full spool stroke 0 5 1 Inherent Ramp up time from neutral to full open ms 50 210 Inherent Ramp down time from full open to neutral ms 40 150 Boot time EHPS software ms 1200 1500 Recognition time of incorrect voltage signals ms 50 Recognition time of incorrect supply voltage ms 200 Recognition time of incorrect CAN signals ms 200 Recognition time of incorrect internal operations ms 50 watchdog Hysteresis PVES and PVED CL rated 0 Hysteresis is indicated at rated voltage and f 0 02 Hz for one cycle one cycle neutral gt full CL gt full CR gt neutral Spool inii Tra
12. CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Neutral position 1 13 4a 4b PVES CL CR EHPS Electronics IX gt y 3 R 13 11 6 5 L R Ps Y 7 Ts P T OSPCX CN LS P EF al 70 7a Ce 22x ug P301 020 When the engine is turned off the priority valve spool 7a is pushed to the right by the spring 7b The passage to the EF port is blocked and the passage to CF to the directional spool 3 is open When the engine is on and the steering unit OSPCX CN is in neutral position the CF pressure will rise to match the spring force in the integrated priority valve and the spool 7a will move to the left and the oil will pass from the pump across the priority valve 7a 7b and out through the EF port The priority valve is a dynamic type meaning that a flow passes from CF through the Dynamic orifice integrated in spool 7a and into the LS line through the check valve 12 to the directional spool 3 In neutral position this dynamic oil flow passes on to the tank When the steering unit is in neutral position
13. Catalogue Numbers of Sauer Danfoss OSPCX CN Steering Units Technical Data Dimensions Notes EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Contents System Safety susto eic ro Parm nre D WEG Emergency steering arseno EHPS type 1 and type 2 prioritizing input signal Fault monitoring eerte etico tore torte colacuns 7 Safety CONSIGErAatiONS ssecsssccseecssssecsseecsscessseecsnecesnecessecessecsssecsnsecssscesascesseecsascesseeeeseessueessneessneesseees Order specification for EHPS and PVES ccssssssssecsseessssecssssesssesessssecessccenscessseessucessucceseecsaeecsnsessaseeses 38 Steering Unit OSPCX CN nevseessecasendvesssesiannsuerapeeecsesaatatees 40 LETEN O VA aecsecuaseuessace soocbeuesvasesosssrvesvosscavesevessesavesectvoavad 40 Code N mbers and Weights 40 Specification Table for Non Catalogue Numbers of Sauer Danfoss OSPCX CN Steering UNIS srini naiiai 41 Technical PETUNT ai 42 DIMENSIONS Nr AE 42 10165 lt itii IE D eO Aims Tn n Vinc Ii MEIN M UE I EI eve UT 43 520L0521 Rev CA Oct 2009 5 SAUER DANFOSS Survey of Literature with Technical Data on Sauer Danfoss Steering Components EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Contens and Technical Literature Survey Detailed data on all Sauer Danfoss steering components
14. Data EHPS Steering Valve EHPS and Electrical Actuation PVE for EHPS The technical data for EHPS are typical measured results For the hydraulic system a mineral based hydraulic oil with a viscosity of 21 mm s 102 SUS and a temperature of 50 C 122 F was used EHPS stand alone Port P EF LS 250 bar 3625 psi Port CL CR 320 bar 4641 psi Max pressure Port L R 125 bar 1812 psi Port Ps 55 bar 798 psi Port T Ts 25 bar 363 psi Port P EF 120 l min 31 7 US gal min Oil flow rated Port CL CR T 80 96 l min 21 25 US gal min Port L R Ps 10 12 5 l min 2 6 3 3 US gal min Spool travel directional 4 7mm 0 27 in spool Sod band directional 1 5 mm 0 06 in Priority valve force 10 bar 145 psi l Nominal flow 120 l min 31 7 US gal min Recommended 30 C gt 60 C 86 F gt 140 F B temperature Diltemperature Min temperature 30 C 22 F Max temperature 90 C 194 F Ambient temperature 30 C gt 60 C 22 F 140 F Operating range 12 80 mm s 65 370 SUS Oil viscosity Min viscosity 10 mm2 s 59 SUS Max viscosity 460 mm2 s 2129 SUS Max contamination Filtration ISO 4406 1999 version 21 19 16 D At 6 mm 0 24 in spool travel with directional spool for maximum cylinder and pilot flow 80 10 2 At 7 mm 0 28 in spool travel max travel with directional spool for maximum cylinder and pil
15. Only values stated in the table above are available for the EHPS specification When choosing housing for PVG please fill in order specification for the PVG group In this PVG group the EHPS will replace the end cover for PVG Remember also to specify and order the OSPCX CN steering unit see page 40 and 41 520L0521 Rev CA Oct 2009 39 SAUER DANFOSS Version Code Numbers and Weights 40 EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Unit OSPCX CN Closed center Closed center steering units are blocked on their P port in the neutral position OSPCX CN Steering units for steering valve EHPS OSPCX CN is a closed center steering unit with the L and the R connections open to the tank when in neutral position OSPCX CN can only be used with Sauer Danfoss steering valve EHPS OSPCX CN steering unit must not be connected directly to the steering cylinder F300 619 L R i lt P T L R NIIS e Pl ART 150 614 10 OSPBCX CN Closed center Non reaction OSPCX CLOSED CENTER NON REACTION STEERING UNITS OSPCX CN in the table below have all the following valve function incorporated Check valve in P port OSPCX CN in the table below have all soft neutral setting springs see page 42 Code numbers Steering unit connections AEG European versions Us Versions kg
16. and accessories can be found in our steering component catalogues which is divided in to 6 individual sub catalogues e General information e Technical data on mini steering units e Technical data on open center and closed center steering units e Technical data on load sensing steering units priority valves and flow amplifiers e Technical data on hydraulic and electro hydraulic pilot operated steering valves electrical actuation modules and appropriate steering units e Technical data on combined steering unit electro hydraulic steering valves and steering wheel sensors Steering components OSPM OSPB OSPC and OSPD OSPB OSPC OSPF OSPD OSPQ OSPL OSPBX OSPLX OVPL OLS and OSQ EHPS EHPS w OLS 320 PVE for EHPS and OSPCX OSPE and SASA The most important data on all Sauer Danfoss steering components is highlighted in a general survey brochure For technical information on individual variants please contact the Sauer Danfoss Sales Organization 520L0521 Rev CA Oct 2009 T301036 SAUER 5 DANFOSS General EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information General Electrohydraulic steering On loaders large forklift trucks dumpers heavy tractors combine harvesters maize harvesters and other similar machines there is often need for electrically actuated steering either in the form of a joystick or fully automatic For this purpose Sauer Danfoss has dev
17. and no signal is generated to PVES the directional spool will be in its center position This means that knocks and impacts from the cylinder are not transmitted to the steering unit Steering left When steering the steering unit will get oil supplied from the pilot pressure reduction valve 5 The pressure for the steering unit is reduced to approximate 30 bar When steering left oil will be passing on to the L port of the EHPS and it will fill the left side chamber of the directional spool 3 which makes the spool move to the right 520L0521 Rev CA Oct 2009 6 ree Technical Information Function 48 40 78 70 10 11 12 13 Electrical actuation module Directional spool Shock valves Suction valves Pilot pressure reduction valve for steering unit Metering valve Priority valve spool Priority valve spring Emergency steering valve Pilot pressure relief valve Check valve for emergency steering Check valve in LS line Shuttle valves EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Valve EHPS and Electrical Actuation PVE for EHPS Steering left contineud T
18. 0 57 in deep LS M12 1 5 11 5 mm 0 45 in deep UNF port version ISO 11926 1 P EF 1 16 12 UN 19 mm 0 75 in deep Ps Ts T CL CR L R 54 16 UNF 14 mm 0 55 in deep LS e 20 UNF 11 5 mm 0 45 in deep All versions Bottom side fixing holes A in EHPS block see page 29 M8 x 1 25 10 mm 0 39 in deep EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS EHPS Type 1 and 2 with PVG lt 421165 10914 29 ry f aT Zl ZI I 3 T S E 1_ts Ag AS S Y LE gt 33 1 30 Berri 35 1 38 To cond 5 lt 86 3 39 gt 24 0 94 Y se c De A g 2 e p T LS I 4 O DO gt Type 1 has only one connector on PVE 30 o o zi i Jj Y 44 5 17 37 1 46 44 5 1 752 6B 2 68
19. 0 min rpm and causes 6 mm 0 24 in spool travel at 100 min rpm steering wheel speed PQ 8l min 2 11 US gal min is based on steering unit with 80 cm rev 4 88 in rev and 100 min rpm etc For example if you need 60 l min 15 85 US gal min cylinder flow at 100 min rpm steering wheel speed and you need 80 cm rev 4 88 in rev steering unit you must choose directional spool 60 8 2 Housing threads P amp EF Ps Ts T CL CR L amp R LS G DIN 3852 2 G A S 6 12 9 G A4 S Metric ISO 6149 1 M 27 2 O S M 18 1 5 O S M 12 1 5 O S UNF ISO 11926 1 1 Ae 12 UN O S 3 OLS320 for EHPS Housing threads P amp EF 3 4 16 UNF O S LS The 20 UNF O S SAE ports 1 in SAE flange M10 threads None or M 12 1 5 O S or 776 20 UNF O S Metric ISO 6149 1 UNF ISO 11926 1 M33 2 O 4 S 15 6 12 UN O S M12 1 5 O S 716 20 UNF O S O S O ring chamfer on port connection Spot face around port connection None If LS connection is going from OLS320 to LS connection of EHPS 22 520L0521 Rev CA Oct 2009 SAUER 5 DANFOSS Dimensioning Steering System with EHPS Steering Valve EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS The cylinder flow is deter
20. 40 120 100 80 60 40 20 0 0 1 2 3 4 5 6 7 mm rpm i i i gt 0 0 05 0 10 0 15 0 20 0 25 in 0 0 05 0 10 0 15 0 20 0 25 in min H i i i gt pm 140 120 100 80 60 40 20 0 E d 5 6 mm 0 gt Spoo trave 0 3 2 0 6 4 0 9 1 2 6 1 5 1 5 8 8 gal min V l min Y gal min Y l min Y PQ PQ PQ PQ 150H10 10 A Flow available for steering CQa QP PQ QP Pump flow PQ Pilot flow The lower left diagram shows pilot flow as function of steering wheel speed The values are valid for OSPCX 50 CN steering unit 100 rpm steering wheel speed corresponds to 5 I min 1 3 US gal min pilot flow The lower right diagram shows spool travel as function of pilot flow 5 min 1 3 US gal min pilot flow gives 6 mm spool travel The upper right diagram shows cylinder flow as function of spool travel 6 mm spool travel gives 40 l min 10 6 US gal min cylinder flow The upper left diagram shows cylinder flow as function of steering wheel speed 100 rpm steering wheel speed gives 40 l min 10 6 US gal min cylinder flow Line A shows flow limit available for cylinder flow when pump flow is 60 l min 15 9 US gal min At 100 rpm 5 l min 1 3 US gal min is used for pilot flow Please contact the Sauer Danfoss Organization regarding characteristics for other directional spools 520L0521 Rev CA Oct 2009 25 6 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit DANFOSS Technical Information Tec
21. 9 EHPS type 2 hydrostatic and electro hydraulic steering system 10 PVED CL Hysteresis PVES and PVED CL ssssesssssssssssssesessesessssssseoeeeesessnssesstoeeeuseesnssrosteesessesssssrosrtesessesssssrosreeees 19 Technical Data PVES and PVED CL lt 444 4 4 4 20 Installation PVED CL sacr ettet cete N ARANA N E eten 21 LAEDIT E A E E E E A 22 Dimensioning Steering System with EHPS Steering Valve een 23 Technical Characteristics cocto trecenti tret retenti eed ertestee brio storie AER iv 25 DIMENSIONS TRETEN 28 EHPSTypeO stand alohe iita emi nnen 28 EHPS Type 1 and 2 stand alone esistente netten tentent tton ttte ttt ns tonat so ais 29 EHPS Type 1 and 2 with PVG EHPS Type 1 and 2 with OLS 320 cssssssscsssscsssccsssesssscessecesseccssecessccesseessscessscessseceseceseessecsnseessses 31 Hydraulic Systems EHPS type 0 stand alone and OSPCX CN steering 4444444 EHPS type 1 stand alone OSPCX CN steering unit and PVRES joystick i EHPS type 1 with PVG 32 OSPCX CN pilot steering unit and PVRES joystick 33 520L0521 Rev CA Oct 2009 SAUER DANFOSS System Safety Order Specification Steering Unit OSPCX CN Version Code Numbers and Weights Specification Table for Non
22. OSPCX CN Ts 150H06 11 EHPS type 1 stand alone OSPCX CN steering unit and PVRES joystick The vehicle can be steered with either the PVRES joystick or the OSPCX CN steering unit The signal from the steering unit has priority on simultaneous activation of steering wheel and joystick PVRES A PVES EHPS type 4 Electronics 150H05 11 32 520L0521 Rev CA Oct 2009 C SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit gt DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS EHPS type 1 with PVG 32 OSPCX CN pilot steering unit and PVRES joystick The vehicle can be steered with either the PVRES joystick or the OSPCX CN steering unit The signal from the steering unit has priority on simultaneous activation of steering wheel and joystick Hydraulic Systems 1 PVG 32 a EN zl
23. PS can be combined with Sauer Danfoss PVG 32 proportional valve Minimization of side acceleration with articulated steering Posibility of GPS row sensor joy stick steering and vaiable steering ratio T301034 1N m 8 851 Ibf in 1cm 0 061 in 1N 0 2248 lbf 11 0 264 US gal 1bar 1450psi F 1 8 C 32 1mm 0 0394 in 7301035 520L0521 Rev CA Oct 2009 3 SAUER DANFOSS Survey of Literature with Technical Data On Sauer Danfoss Steering Components General Steering Valve EHPS and Electrical Actuation Module PVES for EHPS Versions Function Technical Data Installation Variants Dimensioning Steering System with EHPS Steering Valve Technical Characteristics Dimensions Hydraulic Systems EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Contents Survey of Literature with Technical Data On Sauer Danfoss Steering Components 6 Iri 7 Steering Valve EHPS and Electrical Actuation PVE for EHPS 44 8 Me 8 EHPS type 0 hydrostatic steering 515 4444444444 4 44 4 4 4 4 4 8 EHPS type 1 hydrostatic and electro hydraulic steering system sss
24. SAUER DANFOSS EHPS Steering Valve PVE Actuation Module OSPCX CN Steering Unit Technical Information SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information A Wide Range of Steering Components Revision History Table of Revisions Date Page Changed Rev Mar 2009 35 Note added BC Oct 2009 Many Steering column deleted CA Sep 2010 44 New back cover CB A Wide Range of Steering Components F300 599 Sauer Danfoss is the largest producer in the world of steering components for hydrostatic steering systems on off road vehicles Sauer Danfoss offer 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 complicated 4 wheel steering automatic steering e g by sensor and remote controlled steering via satellite We can offer more than 1500 different steering units and 250 different priority valves categorized in types variants and sizes T301033 2009 Sauer Danfoss All rights reserved Sauer Danfoss accepts no responsibility for possible errors in catalogs brochures and other printed material Sauer Danfoss reserves the right to alter its products without prior notice This also applies to products already ordered provided that such alterations can be made witho
25. VES or PVED CL shall be de energized while driving on road It is the OEMs responsibility to establish the necessary means to inform and de energize the PVE from the cabin when driving on public roads A WARNING The Sauer Danfoss range of PVE actuators are single string designs with limited on board fault monitoring Sauer Danfoss strongly recommends application of vehicle specific safety monitoring systems that will detect non conforming steering and effectively disable electro hydraulic actuators or issue appropriate warnings as the case may be A minimum safety system should include a manual power switch to electrical power off electro hydraulic actuators while driving on public roads For details see Technical information PVE Series 4 User Manual PVED CL controller for Electro Hydraulics Steering or contact Sauer Danfoss Technical Support Team 520L0521 Rev CA Oct 2009 37 SAUER DANFOSS Order Specification EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVES for EHPS Order specification for EHPS and PVES Specification table for Sauer Danfoss EHPS steering valve Fill in your company data and place 5 in the table where appropriate and then send to your Sauer Danfoss Sales Organization For further explanation of specification see page 22
26. active error state occurs the fault monitoring logic will be triggered Passive fault monitoring e Adelay of 250 ms before anything happens e The solenoid valve bridge will not be disabled but still control the main spool posi tion e Analarm signal is sent out through the appropriate pin connection no 3 e 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 PVES and PVED CL and will not activate fault monitoring High supply voltage The solenoid valves are disabled when the supply voltage exceeds 36 V and the main spool will return stay in neutral 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 aai N 520L0521 Rev CA Oct 2009 SAUER 5 DANFOSS System Safety continued Safety Considerations EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS 3 Internal clock The solenoid valves are disabled when the internal clock frequency fails and the main spool will return stay in neutral On road Operation A WARNING The P
27. bar 3625 psi and with integrated priority valve for pump flow up to 120 l min 31 7 US gal min For electro hydraulic steering systems Sauer Danfoss offers e Pilot operated steering valves pilot operated by hydrostatic steering unit or by electrical signal with steering flows up to 100 l min 26 4 US gal min steering pressure up to 250 bar 3625 psi e Steering units with integrated electrical operated steering valve with steering flow up to 50 l min 13 2 US gal min steering pressure up to 210 bar 3045 psi e Electrical operated steering valves with steering flow up to 40 l min 10 57 US gal min steering pressure up to 210 bar 3045 psi Characteristic features for steering units e Low steering torque From 0 5 Nm to 3 Nm in normal steering situations e Low noise level e Low pressure drop e Many types available Open center None reaction Open center Reaction Closed center None reaction Load Sensing Load Sensing Reaction e Oneor more built in valve functions relief valve shock valves suction valves none return valve in P line and in LS line e Optional port connections according to ISO SAE or DIN standards Characteristic features for electrohydraulic steering system e Electrohydraulic steering valve EHPS High steering pressure requiring smaller cylinders and flow EHPS Low pilot pressure and flow giving extremely low noise in the cabin EHPS The possibility of manual steering even on very heavy vehicles EH
28. be plane No spots exceeding the height of the area round the three M8 bolt holes allowed 68 2 68 14 0 55 Po 78 3 07 LJ we i rn oe S F 1l 4 83 5 3 287 47 5 1 870 47 5 1 870 8 qO 150H19 11 28 520L0521 Rev CA Oct 2009 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Dimensions EHPS Type 1 and 2 stand alone G port version G DIN 3852 2 P EF G 3 4 16 mm 0 63 in deep I Ps Ts T CL CR L R G 2 14 mm 0 55 in deep LS G 1 4 12 mm 0 48 in deep j 421 65 109 4 29 gt 127 4 96 51 2 01 gt lt Nu 23 5 0 pil lt 4 0 16 Metric port version ISO 6149 1 P EF M27 2 19 mm 0 75 in deep Ps Ts T CL CR L R t 7 a f X f M18 1 5 14 5 mm 0 57 in deep 33 1 30 Bem 371147 73 2 87 LS M12 1 5 11 5 mm 0 45 in deep 317 12 48 4 310 17 j 44 5 175 37 1 46 44 5 1 752 68 2 68 gt p
29. ctuation PVE for EHPS EHPS type 1 and type 2 prioritizing input signal In case of active electrical steering EHPS type 1 and type 2 the steering signal from pilot steering unit has highest priority The oil supply to the steering unit is reduced to 30 bar 435 psi controlled by pressure reduction valve 5 The oil supply to the PVES actuation module is adjusted to 12 bar 174 psi by the metering valve 6 If a driver coincidence activates a joystick steering left and he grabs the steering wheel to steer counter steer to the right the signal from the steering wheel has priority as the pilot steering unit can generate 30 bar 435 psi on the right side of the directional spool and the PVES can only generate 12 bar 174 psi on the left side of the directional spool The joystick must be equipped wit a neutral contact to ensure that the PVES is not under tension in neutral position Without a neutral position contact the joystick will release an electrical signal of 0 5 If the EHPS is hydraulically activated the main spool is moved thus changing the LVDT signal There will be a difference between feedback and input signal and when this reaches more than 1596 the PVEA will go into failure mode Note concerning type 1 and type 2 systems Such systems can be set up without any OSPCX steering unit in case the customer wants pure Steer By Wire SBW steering In such case it is important to connect L and R of EHPS to tank
30. eloped a pilot operated steering valve type EHPS Electro Hydraulic Power Steering A basic system type 0 consists of a pilot steering unit as the signal source and an EHPS valve block which controls oil flow to the steering cylinders proportional to the pilot flow The system can be extended to include an electrical actuator so that as an alternative it becomes possible to steer with a joystick EHPS type 1 Alternatively the actuator can be an electrical programmable module PVED CL to give much more different steering features such like variable steering ratio speed dependent steering ratio steering wheel drift compensation active jerk force compensation and soft end stop This system is called EHPS type 2 F300 592 ver 4 Electro hydraulic steering system 520L0521 Rev CA Oct 2009 7 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Versions EHPS type 0 hydrostatic steering system EHPS Type O is a hydraulic steering system only with the EHPS valve acting as a pilot operated directional valve The steering unit type OSPCX CN acts as a pilot unit delivering oil at a low pressure and low flow The steering unit needs less displacement compared with an ordinary hydrostatic steering system The displacement can be optimized for emergency steering Steering cylinder 150 567 10 F300 609 CL CR EHPS typeO
31. g Valve EHPS and Electrical Actuation PVE for EHPS Variants In the table below is shown the available variants of the different modules in the EHPS valve Part Variants Type 1 PVES Type 2 PVED CL Actuation module Type 0 none Connection Connection AMP AMP Cylinder flow CQ l min 20 40 60 80 US gal min 5 28 10 57 15 85 21 13 Pilot flow PQ l min US gal min Directional spool 5 1 32 CQ PQ 20 5 40 5 not available not available 8 2 11 not available 40 8 60 8 80 8 10 2 64 not available not available 60 10 CQ PQ 80 10 en bs G Metric UNF Housing Stand alone available available available For PVG available available available For OLS 320 not available available available Relieve valve 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 bar psi 1450 1595 1740 1885 2030 2175 2320 2465 2610 2755 2900 3045 3190 3335 3480 3626 Shock valves 160 175 190 210 230 240 250 265 280 300 320 bar psi 2320 2538 2755 3045 3335 3480 3626 3843 4061 4351 4641 1 Directional spool Cylinder flow CQ 20 l min 5 28 US gal min is valid for 6 mm 0 24 in spool travel CQ 40 l min 10 57 US gal min is valid for 6 mm 0 24 in spool travel etc Pilot flow PQ 5 l min 1 32 US gal min is based on steering unit with 50 cm rev and 10
32. g on our extensive applications expertise we work closely with our customers to ensure exceptional performance for a broad range of off highway vehicles We help OEMs around the world speed up system development reduce costs and bring vehicles to market faster Sauer Danfoss Your Strongest Partner in Mobile Hydraulics Go to www sauer danfoss com for further product information Wherever off highway vehicles are at work so is Sauer Danfoss We offer expert worldwide support for our customers ensuring the best possible solutions for outstanding performance And with an extensive network of Global Service Partners we also provide comprehensive global service for all of our components Please contact the Sauer Danfoss representative nearest you Local address Sauer Danfoss US Company 2800 East 13th Street Sauer Danfoss ApS DK 6430 Nordborg Denmark Ames IA 50010 USA Phone 45 7488 4444 Phone 1515 239 6000 Fax 45 7488 4400 Fax 1515 239 6618 Sauer Danfoss GmbH amp Co OHG Sauer Danfoss Daikin LTD Postfach 2460 D 24531 Neum nster Shin Osaka TERASAKI 3rd Bldg 6F Krokamp 35 D 24539 Neum nster Germany 1 5 28 Nishimiyahara Yodogawa ku Phone 49 4321 871 0 Osaka 532 0004 Japan Fax 49 4321 871 122 Phone 81 6 6395 6066 Fax 81 6 6395 8585 www sauer danfoss com
33. hnical Characteristics Continued Technical Characteristics Continued A 220 bar 5 0 bar 3190 72 5 0 psi 8 190 bar 5 0 bar 2756 72 5 0 psi 26 Steering Valve EHPS and Electrical Actuation PVE for EHPS Directional spool Cylinder flow characteristic for all directional spools Q A l min US gal min D 100 D 90 35 6 C 80 1 30 70 25 60 20 B 50 B 15 40 10 30 A 5 A 20 104 255 lt t gt a 0 25 0 2 0 15 0 1 0 05 0 0 05 0 1 015 0 2 0 25 in E p Us 025 03 035 04 045 05 055 06 065 070 075 Upc 150H07 10 A valid for spools for nominal cylinder flow CQ 20 l min 5 3 US gal min B valid for spools for nominal cylinder flow CQ 40 l min 10 6 US gal min C valid for spools for nominal cylinder flow CQ 60 l min 15 9 US gal min D valid for spools for nominal cylinder flow CO 80 l min 21 1 US gal min Pilot pressure relief valve P T Qp characteristic The pilot pressure relief valve protects the steering system against excessive pressure The pilot pressure relief valve works together with the priority valve in the EHPS to limit the maximum steering pressure P T The pilot pressure relief valve is set at an oil flow to the priority valve of 40 l min 10 6 US gal min Setting tolerance rated value 5 bar 72 5 psi
34. ing wheel diameter Swd 0 381 m 15 in Tems Fe Swd 2 350 0 381 2 66 7 Nm 590 Ibf in Pilot steering unit displacement can be chosen calculated from the table lowest on page 28 in General steering components The nearest displacement Vvs generating minimum 40 bar 580 psi at Tws 66 7 Nm 590 Ibf in Vvs maximum 80 cm rev 4 88 in As in an EHPS steering system pilot oil is dumped to the tank the steering unit displacement should be as small as possible 520L0521 Rev CA Oct 2009 23 SAUER DANFOSS Dimensioning Steering System with EHPS Steering Valve continued 24 EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS In a given example you may be able to use a steering unit with smaller displacement as maximum size acceptable for emergency steering pressure This is determined by the required speed for steering the vehicle in a situation without pump oil supply In this example a 50 cm 3 01 in Vvs chosen steering unit could be big enough to obtain the required steering speed in emergency steering mode Pilot flow PQ is chosen by PQ Ws chosen 100 rpm 50 cm 3 01 in rev 100 rpm 5 l min 1 3 US gal min Designation CQ PQ for directional spool is 40 5 Calculating pump flow If cylinder movement must correspond to steering wheel speed up to 100 rpm the minimum pump flow Opm for steering wi
35. joystick Analogue or CAN Steering Wheel Sensor SASA CAN Control principle Open loop Control principle Closed loop Open loop Closed loop Vehicle Speed Dependent Sensitivity Vehicle Speed Dependent Sensitivity Actuator Dependent Sensitivity Actuator Dependent Sensitivity Anti Drift knob position control Soft End Stop Anti Jerk Control principle Control principle Soft End Stop Anti Jerk Fixed Ramps Times Anti Jerk Speed Dependent Times Fixed Ramps Anti Jerk Speed Dependent Times 520L0521 Rev CA Oct 2009 Low Priority Steering Device e g joystick Analogue or CAN Control principle Control principle Closed loop Open loop Vehicle Speed Dependent Sensitivity Actuator Dependent Sensitivity Soft End Stop Anti Jerk Fixed Ramps Anti Jerk Speed Dependent Times Feedback Sensor Analogue or CAN Redundant Feedback Analogue or CAN High Priority Set point Controller GPS IS011798 CAN Control principle Closed loop Vehicle Speed Dependent Sensitivity P301 022 11 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Versions EHPS type 0 1 or 2 with flanged on priority valve OLS 320 EHPS sterring valve has build in priority valve but for max pump flow 120 l min 31 7 US gal min In systems with EHPS and
36. lb G2 S M18 1 5 O S 34 16UNF O OSPCX 50 CN 11031535 5 2 11 5 OSPCX 70 CN 150G4110 B 5 3 11 7 OSPCX 80 CN E B 150G4112 5 3 11 7 OSPCX 100 CN 150G4107 150G4108 150G4109 5 4 11 9 S countersinking around port connections can not be used in connection with OVR angular block O O ring chamfer on port connections If you wish other specifications for your OSPCX CN steering unit please fill in the order form on page 39 and contact the Sauer Danfoss sales organization 520L0521 Rev CA Oct 2009 SAUER 6 DANFOSS Technical Information Specification Table for Non Catalogue Numbers EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Unit OSPCX CN of Sauer Danfoss OSPCX CN Steering Units Specification table for Sauer Danfoss closed center steering units type OSPCX CN which are not available in the code number table Fill in with company data and x s in the table and send to your Sauer Danfoss Sales Organization Name Vehicle Potential pcs year Completed Date Your company Steering unit type OSPCX CN Displacement cm3 rev 50 60 70 80 100 OSPCX CN 6 2 S M18 1 5 Of S 34 16UNF O Port threads Neutral setting springs Soft 0 15 1 8 Nm 1 33 15 9 Ibfein in normal steering situation Standard 0 8 3 Nm 7 10 26 55 Ibf in in normal steering situation Strong 1 5 4 Nm 13 27 35 40 Ibf in in normal stee
37. ll be Qpm CQ PQ 40 5 45 I min 11 9 US gal min If pump flow is insufficient the steering cylinder speed will not match the steering wheel speed the faster you steer the higher pilot flow will be and less flow will be left for cylinder movement If you want to have sufficient supply at higher steering wheel speed higher than 100 rpm you must choose enough pump capacity for such a case On page 25 is shown flow characteristics for the different directional spools The 40 min 10 57 US gal min spool gives maximum cylinder flow 50 l min 13 21 US gal min at end stroke If you in the example above calculate with maximum steering wheel speed 150 rpm the minimum pump flow capacity must be Qpm CQmax PQmax 50 7 5 581 min 15 32 US gal min Qmax comes from 50 cc rev 150 rpm 7 5 l min 1 98 US gal min 520L0521 Rev CA Oct 2009 6 ree Technical Information Technical Characteristics EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Valve EHPS and Electrical Actuation PVE for EHPS Directional spool Oil flow characteristic for spool 40 5 ca CQ CQ CQ S mind A US A ymin gal min gal min 60 60 12 50 50 10 40 40 8 30 30 6 4 20 20 2 10 10 Spoo trave 0 0 lt 0 gt min 1
38. mined from Steering cylinder volume Steering speed Dimension of steering cylinder s can be based on formulas in General steering components page 29 31 Symbols V I steering cylinder volume i rev number of steering wheel revolutions from lock to lock Vvc cm3 rev steering system displacement for steering cylinder CQ l min nominal cylinder flow Pems bar emergency steering pressure Tems Nm emergency steering torque Fe N emergency steering wheel rim force Swd m steering wheel diameter Vvs cm3 rev displacement steering unit PQ l min pilot flow Opm l min pump flow minimum Example Cylinder volume V gt 1 851 0 49 US gal min Required number of steering wheel revolutions from lock to lock i 4 5 revolutions The required steering system displacement for steering cylinder is calculated from Vvc V i 1 85 1000 5 370 cm rev 22 6 in 1 85 1000 4 463 cm rev 28 3 in In this example we chose Vvc 400 cm3 rev The directional spool is designated by nominal cylinder flow at 100 rpm speed on steering wheel CQ 400 100 1000 cm I 40 l min 10 6 US gal min The pilot flow is mainly determined by the demand for emergency steering pressure look in General steering components page 28 29 Emergency steering pressure Pems is calculated to be maximum Pems 40 bar 580 psi Maximum allowable steering torque Tems based on steering wheel rim force Fe 350 N and steer
39. n steering with an electrical signal the directional spool 3 will be controlled by hydraulic signal from the PVES which is converting electrical signal to hydraulic signal to the directional spool 3 so that the movement of the directional spool 3 will be proportional to the electrical signal to the PVES The shuttle valves 13 will lead oil from PVES 1 to directional spool 3 520L0521 Rev CA Oct 2009 15 SAUER DANFOSS Function 16 EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS PVES and PVED CL electrical actuation The philosophy of Sauer Danfoss electro hydraulic actuation type PVE is integration of electronics sensors and actuators into a single unit that interfaces directly to the EHPS steering valve body 150H20 10 Closed loop control All the proportional actuators feature an integrated feedback transducer that measures spool movement in relation to the input signal and by means of a solenoid valve bridge controls the direction velocity and position of the directional spool of the valve The integrated electronics compensate for flow forces on the spool internal leakage changes in oil viscosity pilot pressure etc This results in lower hysteresis and better resolution Furthermore the electronics enable built in safety like fault monitoring directional indication a
40. nd LED light indication Solenoid Spool or Spool pos valve bridge piston Feed back signal Transducer 157 503 10 Principle In principle the input signal set point signal determines the level of pilot pressure which moves the main spool The position of the directional spool is sensed in the LVDT transducer which generates an electric feed back signal registered by the electronics The variation between the set point signal and feed back signal actuates the solenoid valves The solenoid valves are actuated so that hydraulic pilot pressure drives the directional spool into the correct position Inductive transducer LVDT Linear Variable Differential Transformer When the directional spool is moved a voltage is induced proportional to the spool position The use of LVDT gives contact free monitoring of the directional 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 Integrated pulse width modulation Positioning of the directional spool in PVES is based on the pulse width modulation principle As soon as the directional spool reaches the required position modulation stops and the spool is locked in position 520L0521 Rev CA Oct 2009 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS echnical Information Technical
41. ns protection in the form of screening is recommended 20 520L0521 Rev CA Oct 2009 C SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit gt DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Installation PVED CL The CAN wiring is done according to J1939 15 where as Analogue wiring is recommended to be at least 0 75 mm and no longer than 9 meters V bat CAN low PVED CL Switch CAN bus JULII ANNE IL AD2 R 3a 2b 3b CAN high E 5V Out V neg GND _ SS sensors Uninterruptable power source Grey connector CAN H 4 A WARNING PVED CL L rin CAN low L AD1 5V Out GND AD2 Analog sensors Ti ja 1b V bat B 25 V neg 3a3b CAN high E p t eee as V 1 AD1 I 2 5V out 3 GND 4 AD2 Black connector P005 095E The following wiring faults will destroy the PVED CL 5V out output Connecting GND to 5V out AND Vbat to Vbat Connecting Vbat to 5V out Short circuit 5V out to GND for more than 5 minutes 520L0521 Rev CA Oct 2009 21 6 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit DANFOSS Technical Information Steerin
42. on EHPS When steering left the oil from the steering unit passes on to the L port of the EHPS and it will fill the left side chamber of the directional spool 3 and so the spool moves to the right As there is no pump supply there is no pressure in CF consequently there is no pressure on the left side of the emergency steering valve 9 Pilot oil from the steering unit is pushing on the right side of emergency steering valve and causing it to move towards the left Now pilot flow is led to the directional spool 3 and into the CL port and the cylinder moves Return oil from the cylinder enters CR and will pass over the directional spool 3 and the check valve 11 and it feeds the steering unit In this way the cylinder is directly moved by the oil flow from the steering unit and the ratio is increased in comparison to normal steering situation with active pump supply When turning right the movement of the directional spool 3 will be opposite All other functions are equal as when steering left Herby is meant when pressure in P line to EHPS has dropped to less than 12 bar 174 psi When pump pressure is larger than 12 bar 174 psi emergency steering will not be possible due to metering valve 6 will stay open during steering 520L0521 Rev CA Oct 2009 SAUER 5 DANFOSS System Safety continued EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information Steering Valve EHPS and Electrical A
43. ot flow 80 10 Additional data s for EHPS with OLS 320 Spring force 10 bar 145 psi Nominal flow 320 l min 84 5 US gal min Priority valve OLS 320 520L0521 Rev CA Oct 2009 17 6 SAUER DANFOSS echnical Information Technical Data PVES 18 EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Valve EHPS and Electrical Actuation PVES for EHPS PVES rated 11Vto 32V Supply voltage Upc range 11Vto 32V max ripple 5 Current consumption at rated voltage PVES 0 57A 12 V 0 3 A 24V neutral 0 5 x Unc Signal voltage CR port lt gt CL port 0 25 to 0 75 Unc Signal currentat rated voltage 0 25 mA to 0 70 mA Input impedance in relation to 0 5 Uoc 12 KO Input capacitor 100 nF Power consumption PVES 7W Reaction time PVES Supply voltage Function Prop super 5 max 0 230 Disconnected by means Reaction time from neutral ss rated 0 150 of neutral switch position to max spool travel min 0 120 Di db B mei i max 0 175 isconnectec y means Reaction time from max spool rad 0 090 of neutral switch travel to neutral position min 0 065 i max 0 200 Constant voltage Faction Eme romneutra rated 0 120 position to max spool travel min 0 050 max 0 100 Constant voltage max 5p00 ted 0 090 travel to neutral position min 0 065 520L0521 Rev CA Oct
44. pump flow between 120 l min 31 7 US gal min and 320 l min 84 5 US gal min a combination of EHPS and OLS 320 gives a good compact solution to reduce hosing and installation cost compared with stand alone components F301 471 EHPS P301 025 12 520L0521 Rev CA Oct 2009 G SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit gt DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Function EHPS Valve The EHPS includes the following main components AD in DE Electrical actuation module Housing Directional spool Shock and suction valve Pilot pressure reduction valve for steering unit 6 Pilot pressure valve for electrical actuating module also called metering valve 7 Priority valve 10 7 8 Cover 2 9 Emergency steering valve 2 10 Pilot pressure relief valve 9 P301 018 11 Shuttle valves 520L0521 Rev CA Oct 2009 13 6 SAUER DANFOSS Function 4a Ab 7a 7b 10 14 12 13 14 Electrical actuation module Directional spool Shock valves Suction valves Pilot pressure reduction valve for steering unit Metering valve Priority valve spool Priority valve spring Emergency steering valve Pilot pressure relief valve Check valve for emergency steering Check valve in LS line Shuttle valves EHPS Steering Valve PVE Actuation OSPCX
45. r 28 145 psi 400 350 4 24 300 20 250 16 200 12 min 150 1 100 8 5 4 ol 0 Qp 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 Op p 0 5 10 15 20 2 30 35 40 45 50 55 60 65 70 75 80 US gal min P301 019 520L0521 Rev CA Oct 2009 27 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Dimensions EHPS Type 0 stand alone 42 1 65 109 4 29 G port version G DIN 3852 2 P EF G 3 4 16 mm 0 63 in deep T Ps Ts T CL CR L R G 2 14 mm 0 55 in deep LS G 1 4 12 mm 0 48 in deep SUR iffum THAI 122114 80 A a A 0 16 Metric port version ISO 6149 1 P EF M27 2 19 mm 0 75 in deep Ps Ts T CL CR L R M18 1 5 14 5 mm 0 57 in deep LS M12 1 5 11 5 mm 0 45 in deep lt et 512 01 9 23 5 0 925 37 1 47 229 9 02 4 3 0 17 37 1 46 44 5 1 752 em et p UNF port version ISO 11926 1 P EF 1 146 12 UN 19 mm 0 75 in deep Ps Ts T CL CR L R gt 3 4 16 UNF 14 mm 0 55 in deep LS 716 20 UNF 11 5 mm 0 45 in deep Y All versions i A M8 1 25 10 mm 0 39 in deep gO B M8 1 25 10 mm 0 39 in deep 150H18 12 The mounting surface for the EHPS must
46. ring situation Yes No Unit painted black S Spot face around port connections can not be used in connection with OVR angular block O O ring chamfer on port connections 520L0521 Rev CA Oct 2009 41 6 SAUER DANFOSS Technical Information Technical Data Dimensions OSPCX CN European version A G 2 w spot face or M18 1 5 ISO 6149 15 mm 0 59 in deep B M10 1 5 16 mm 0 63 in deep US version A 34 16 UNF O ring boss 15 mm 0 59 in deep B 3 8 16 UNC 16 mm 0 63 in deep EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Unit OSPCX CN Common data Look in sub catalogue General steering components Manual steerin Look in sub catalogue General steering components 9 pressure Displacement flow and pressure u u 42 Displacement Ratet oil flow Max pressure on connections Steering unit cm3 rev l min in3 rev US gal min P bar psi T bar psi L R bar psi OSPCX 50 CN 50 3 05 5 1 32 OSPCX 60 CN 60 3 70 6 1 58 OSPCX 70 CN 70 4 30 7 1 85 125 1813 25 363 100 1450 OSPCX 80 CN 80 4 90 8 2 11 OSPCX 100 CN 100 6 10 10 2 64 B i a A EN x8 tae MEE EOS 3d Ed 28 vt amp Y g 2 8 0 110 L min 7 1 0 280 EN 710 28
47. steering wheel sensor placed between column and steering unit The EPHS can be controlled electrically also by using signals from for example GPS controller row censor joy stick or mini steering wheel Input from the steering wheel will always have highest priority With PVED CL the following steering features in electro hydraulic steer mode are possible e Variable steering ratio Speed dependent steering ratio Steering wheel drift compensation Active jerk force compensation Soft end stop F301 545 Steering Wheel Sensor Joy stick OSP Q Q Steering PVED CL EHPS valve cylinder Vehicle Speed Position Sensor CAN bus 150 565 11 PVED CL CL CR EHPS type 2 Electronics Ps Ts EF P LS T P301 027 520L0521 Rev CA Oct 2009 Technical Information SAUER DANFOSS EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Steering Valve EHPS and Electrical Actuation PVE for EHPS Functional Options overview EHPS type 2 hydrostatic and electro hydraulic steering system continued This block diagram shows all input devices possible for the PVED CL actuator controller Detailed description is to be found in separate literature PVED CL User Manual please contact Sauer Danfoss Sales Organization Vehicle speed signal J1939 CAN MMI Display Buttons e g to select program Display Info Status Diagnostic CAN High Priority Steering Device e g
48. ut affecting agreed specifications All trademarks in this material are properties of their respective owners Sauer Danfoss the Sauer Danfoss logotype the Sauer Danfoss S icon PLUS 1 What really matters is inside and Know How in Motion are trademarks of the Sauer Danfoss Group Front cover illustrations F301 544 F301 545 P300 608 P300 619 Drawing 150 04 2 520L0521 Rev CA Oct 2009 SAUER 5 DANFOSS A Wide Range of Steering Components continued Conversion Factors EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit Technical Information A Wide Range of Steering Components For hydrostatic steering systems Sauer Danfoss offers e Mini steering units with displacements from 32 to 100 cm rev 1 95 to 6 10 in rev flow up to 20 l min 5 28 US gal min steering pressure up to 125 bar 1813 psi e Steering units with displacements from 40 to 1200 cm rev 2 44 to 73 2 in rev flow up to 100 l min 26 4 US gaL min steering pressure up to 240 bar 3481 psi e Priority valves for rated flows at 40 80 120 160 and 320 l min 10 6 21 1 31 7 42 3 and 84 5 US gal min pressure up to 350 bar 5076 psi e Pilot operated flow amplifiers with amplification factors of 4 5 8 10 or 20 for rated oil flows of 240 and 400 l min 63 4 and 105 7 US gal min steering pressure up to 210 bar 3045 psi e Pilot operated steering valve with steering flow up to 100 l min 26 4 US gal min steering pressure up to 250
49. vel 48 6 4 2 2 0 6 520L0521 Rev CA Oct 2009 157 669 11 19 SAUER EHPS Steering Valve PVE Actuation OSPCX CN Steering Unit 6 DANFOSS Technical Information Steering Valve EHPS and Electrical Actuation PVE for EHPS Technical Data PVES and Oil consumption PVED CL Supply PVES voltage Function and PVED CL Without Pilot oil 0 3 l min voltage flow per PVE neutral 0 078 US gal min 0 1 l min With Pilot oil flow 0 026 US gal min voltage per PVE continuous 0 8 l min actuations 0 211 US gal min Oil viscosity Oil temperature range 12 75 mm s 65 347 SUS Rec range 30 60 C 86 140 F OU nr Oi 4 mm s 39 SUS B min 30 C 22 F viscosity temperature max 460 mm s 2128 SUS max 90 C 194 F Note Max start up viscosity 2500 mm s Filtering Ambient temperature Max allowed degree of Ambiant Filtering in the contamination ISO 4406 temperatur 30 gt 60 C 22 5 140 F hydraulic system 1999 version 23 19 16 range Rec Pilot pressure nom 13 5 bar 196 psi Pilot pressure relative to T min 10 bar 145 psi pressure max 15 bar 217 psi Enclosure and connector Version with AMP JPT connector Grade of enclosure IP 66 According to the international standard IEC 529 In particulary exposed applicatio
Download Pdf Manuals
Related Search