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Danfoss PVG 16 PVH/Covers, Руководство по обслуживанию

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10. Issue/attach label with PVG code no. for the valve assembly.

PVM

PVS

PVBZ

PVB

PVP

PVEA/PVEM

PVEO

PVEH/PVES

PVH

PVMD

PVMR/PVMF

PVLP/PVLA

C

D

F

E

Service Manual

PVG 16 and 32 Service Assembly/Disassembly Guide

Assembly instructions

 

©

 Danfoss | November 2017

L1104530 | AX00000133en-US0106 | 21

Содержание PVG 16 PVH/Covers

Страница 1: ...Service Manual PVG 16 and 32 Assembly Disassembly Guide PVG 16 PVG 32 powersolutions danfoss com ...

Страница 2: ...dated with PVE Series 7 0105 May 2014 Testing section added cover image AD Apr 2014 Converted to Danfoss layout DITA CMS AC Aug 2013 Torgue change in dwg page 19 AB Jun 2012 First Edition AA Service Manual PVG 16 and 32 Service Assembly Disassembly Guide 2 Danfoss November 2017 L1104530 AX00000133en US0106 ...

Страница 3: ... Remote pressure compensated controls 10 Remote pressure compensated system characteristics 10 Typical applications for remote pressure compensated systems 10 Open center PVP 11 Closed center PVP 11 Sectional view Safety in Application Example of a control system for manlift 13 Examples of wiring block diagram 15 Assembly instructions PVG 16 and 32 general conditions 17 Assembly 17 Testing PVG 16 ...

Страница 4: ...Service Manual PVG 16 and 32 Service Assembly Disassembly Guide General information 4 Danfoss November 2017 L1104530 AX00000133en US0106 ...

Страница 5: ...gn improves the machine performance and efficiency increasing productivity and reducing energy consumption Features of PVG 16 and PVG 32 Load independent flow control Oil flow to an individual function is independent of the load pressure of this function Oil flow to one function is independent of the load pressure of other functions Good regulation characteristics Energy saving Up to 12 basic modu...

Страница 6: ...s A and B Different interchangeable spool variants All versions suitable for mechanical hydraulic and electrical actuation Actuation modules The basic module is always fitted with mechanical actuator PVM and PVMD which can be combined with the following as required Electrical actuator 11 32 V PVES proportional Super PVEH proportional High performance PVEH F proportional high performance Float PVEA...

Страница 7: ...l monitors the pressure differential between pump outlet and the LS signal and regulates servo pressure to control the swashplate angle Swashplate angle determines pump flow Actuator load determines system pressure The pump control monitors system pressure and will decrease the swashplate angle to reduce flow if system pressure reaches the PC setting A secondary system relief valve in the PVG valv...

Страница 8: ...ifice do not use with PVG valves The load sense signal line requires a bleed orifice to prevent high pressure lockup of the pump control Most load sensing control valves include this orifice An optional internal bleed orifice is available for use with control valves that do not internally bleed the LS signal to tank Integral PC function The LS control also performs as a PC control decreasing pump ...

Страница 9: ... PC control continues to monitor system pressure and changes swashplate angle to match the output flow with the work function pressure requirements If the demand for flow exceeds the capacity of the pump the PC control directs the pump to maximum displacement In this condition actual system pressure depends on the actuator load For additional system protection install a relief valve in the pump ou...

Страница 10: ...andby mode A proportional solenoid valve coupled with a microprocessor control can produce an infinite range of operating pressures between the low pressure standby setting and the PC setting Size the external valve and plumbing for a pilot flow of 3 8 l min 1 US gal min For additional system protection install a relief valve in the pump outlet line Remote pressure compensated system characteristi...

Страница 11: ...the A and B ports of pressure compensated basic modules to limit the pressure from the individual working functions The LS pressure limiting valves save energy compared with PVLP 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 LS pressure limiting valves an oil flow of about 2 l min 0 5 US gal min w...

Страница 12: ...n valve PVLP 4 Plug open center 14 Pressure compensator 5 Orifice closed center 15 LS connection port A 6 Pressure adjustment spool 16 LS connection port B 7 Plug closed center 17 Suction valve PVLA 8 LS connection 18 Load drop check valve 9 LS signal 19 Pilot oil supply for PVE 10 Shuttle valve 20 Maximum oil flow adjustment screws for A B ports Service Manual PVG 16 and 32 Service Assembly Disas...

Страница 13: ...t 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 W Warning All brands and all types of directional control or pr...

Страница 14: ... the man lift Typical PVE wiring block diagram W 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 Service Manual PVG 16 and 32 Service Assembly Disassembly Guide Safety in Application 14 Danfoss November 2017 L1104530 AX00000133en US0106 ...

Страница 15: ... diagram Example 1 Fault detection output high on low off Alarm logic 2 Memory 3 E1 E2 Output AND OR UDC2 Error US Neutral detection Supply control signal neutral OFF Delay 1 UDC2 Error US 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 Typical wirin...

Страница 16: ...al OFF Delay 1 PVE 1 PVE 2 Fault detection Delay DI Logic Memory US DI A DI B 2 4 3 Output Fault detection Delay DI Logic Memory US DI A DI B 2 4 3 Output OR Emergency Stop Man present switch P301 319 UDC2 Error US DI B Error DI A UDC2 Error US Error DI A Hydraulic deactivation Fault monitoring for deactivation of the hydraulic system with extra fault inputs using the PVE s with DI Direction Indic...

Страница 17: ...tween the PVP and the PVB modules making sure the LS shuttle valve is able to move freely 4 Place the PVP the PVS if a valve group has midinlet or HIC as the last module and place the washers and nuts in position and hand tighten the valve 5 Place the valve on a plain and level surface and tighten the assembly to a torque of 28 2 N m 247 8 17 lbf in using a 13 mm socket Max level tolerance is 0 5 ...

Страница 18: ...towards the PVB before engagement will occur Once the driver arm is engaged rotate the mechanical actuator while pressing the PVM until the PVM is flush against the PVB housing Tighten the four 4 mounting screws to a torque of 0 8 0 0 5 N m 70 0 4 5 lbf in using a 5 mm hex driver Assembly of PVE electrical actuation Assembly of PVM mechanical actuation Assembly of PVG 16 PVEO PVEA PVEA F PVMD PVH ...

Страница 19: ... a small nylon filter in the P channel under the O ring Insure that the transducer stem on the PVE s with closed loop feedback interfaces with the end of the PVBS without any restrictions New and unused PVE units can be mounted without neutral adjustment to the LVDT transducer If an adjustment is required contact the service department For control options with mechanical detent PVMR or mechanical ...

Страница 20: ...ly is to be assembled in accordance with the specification sheet 9 Assemble the shock check PVLP valves into the PVB s The top of the PVLP valve is marked with the last three digits of the module code number This number also indicates the valve pressure setting 15 1 I min 4 US gal min Be careful not to swap plugs and valves The PVLA module carries no markings The torque for the plug is 4 0 0 3 N m...

Страница 21: ...r the valve assembly PVM PVS PVBZ PVB PVP PVEA PVEM PVEO PVEH PVES PVH PVMD PVMR PVMF PVLP PVLA C D F E Service Manual PVG 16 and 32 Service Assembly Disassembly Guide Assembly instructions Danfoss November 2017 L1104530 AX00000133en US0106 21 ...

Страница 22: ...R PVP S can be tested as assembled for all pressure relief settings Groups with OPEN CENTER PVP S and PVB S with shock valves PVLP and LSA LSB valves with opening pressure lower than the pressure setting in the PVP The PVP must be modified temporarily to CLOSED CENTER After the relief settings are made the PVP must be corrected to OPEN CENTER All other with OPEN CENTER PVP S can be tested as assem...

Страница 23: ...to the rod end of the cylinder and the B port to the base end of the cylinder see the figure below PVP LS P V310340 A Inlet Pressure Measurement 30 to 350 bar 435 to 5075 psi Workport PVLP Pressure Measurement 32 to 350 bar 464 to 5075 psi PC Pump 14 l min 3 4 US gal min T A B A B A B LX PVB PVB PVB PVS I 2 Shift the control lever of the tested section towards the valve and observe cylinder retrac...

Страница 24: ...ters itself Observe that the spool responds to any change in the signal from the joystick Any change in position of the joystick should relate to a change in the PVM control lever Check the metering of the PVEM H s 8 After all sections have been tested insure that all relief valves are adjusted correctly Refer to the section Pressure setting after assembly on page 22 for any adjustments 9 Remove a...

Страница 25: ...Service Manual PVG 16 and 32 Service Assembly Disassembly Guide Test report Danfoss November 2017 L1104530 AX00000133en US0106 25 ...

Страница 26: ...PVG 16 specification sheet Service Manual PVG 16 and 32 Service Assembly Disassembly Guide Order specifications 26 Danfoss November 2017 L1104530 AX00000133en US0106 ...

Страница 27: ...PVG 32 specification sheet Service Manual PVG 16 and 32 Service Assembly Disassembly Guide Order specifications Danfoss November 2017 L1104530 AX00000133en US0106 27 ...

Страница 28: ...utions 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 Danfoss can accept no responsibility for possible errors in catalogues brochures a...

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