Table Of Contents - Danfoss PVG 32 Technical Information

Technical Information
PVG 32 Proportional Valve Group
Contents
General description
Safety in application
Function
PVG 32 technical data
Electrical actuation
Technical characteristics
© Danfoss | August 2017
Features of PVG 32........................................................................................................................................................................... 5
PVG modules .....................................................................................................................................................................................5
PVP, pump side modules..........................................................................................................................................................5
PVB, basic modules.....................................................................................................................................................................5
Actuation modules..................................................................................................................................................................... 6
Remote control units ......................................................................................................................................................................6
PVG 32 with open center PVP...................................................................................................................................................... 7
PVG 32 with closed center PVP....................................................................................................................................................8
PVG 32 sectional view.....................................................................................................................................................................9
Load sensing for variable displacement pump supply.......................................................................................................9
Control system example..............................................................................................................................................................12
Examples of wiring block diagram..................................................................................................................................... 14
Load sensing controls...................................................................................................................................................................16
LS control with bleed orifice (do not use with PVG valves).......................................................................................16
Integral PC function................................................................................................................................................................. 16
Load sensing system characteristics:.................................................................................................................................16
Remote pressure compensated controls.............................................................................................................................. 16
Remote pressure compensated system characteristics:............................................................................................ 17
Typical applications for remote pressure compensated systems:..........................................................................17
PVG 32 main spool with pressure compensated control................................................................................................ 17
Pressure compensated system characteristics.............................................................................................................. 18
Typical applications for pressure compensated systems...........................................................................................18
PVPC adapter for external pilot oil supply............................................................................................................................ 18
PVPC with check valve for open center PVP................................................................................................................... 18
PVPC without check valve for open or closed center PVP.........................................................................................19
PVMR, friction detent....................................................................................................................................................................21
PVMF, mechanical float position lock.....................................................................................................................................21
PVBS, main spools for flow control (standard).................................................................................................................... 21
PVBS, main spools for flow control (linear characteristic)............................................................................................... 21
PVBS, main spools for pressure control................................................................................................................................. 22
Background.................................................................................................................................................................................22
Principle....................................................................................................................................................................................... 22
Application..................................................................................................................................................................................23
Sizing.............................................................................................................................................................................................23
Limitation.................................................................................................................................................................................... 24
PVPX, electrical LS unloading valve.........................................................................................................................................24
PVH, hydraulic actuation............................................................................................................................................................. 26
PVM, mechanical actuation........................................................................................................................................................26
PVE, electrical actuation.............................................................................................................................................................. 26
PVPX, electrical LS unloading valve.........................................................................................................................................29
Electrical control of PVG.............................................................................................................................................................. 30
Closed loop control....................................................................................................................................................................... 31
PVEO................................................................................................................................................................................................... 32
PVEM...................................................................................................................................................................................................32
PVEA, PVEH, PVES, PVEU.............................................................................................................................................................. 33
PVEP.................................................................................................................................................................................................... 33
PVED-CC and PVED-CX.................................................................................................................................................................33
PVHC................................................................................................................................................................................................... 34
General...............................................................................................................................................................................................36
PVP, pump side module.............................................................................................................................................................. 36
520L0344 | BC00000038en-US0802 | 3