Table Of Contents - Danfoss PVE Series 4 Technical Information

Technical Information
Contents
General Information
Functionality
Safety and monitoring
Safety in application
PVE control
Technical Data
PVE, Series 4 for PVG 32/100/120 and PVHC
List of abbreviations for PVG/PVE...............................................................................................................................................5
Literature reference for PVG products...................................................................................................................................... 6
Standards for PVE............................................................................................................................................................................. 7
PVE with connector variants.........................................................................................................................................................7
Warnings..............................................................................................................................................................................................7
PVE series 4 introduction............................................................................................................................................................... 7
PVE stands for PVE actuator .........................................................................................................................................................8
Overview..............................................................................................................................................................................................9
PVG functionality............................................................................................................................................................................10
PVE functionality............................................................................................................................................................................ 10
Hydraulic subsystems............................................................................................................................................................. 10
Variant of hydraulic subsystem: PVEA...............................................................................................................................12
Variant of hydraulic subsystem: PVHC.............................................................................................................................. 12
Mechanical subsystem............................................................................................................................................................13
Electronic subsystem...............................................................................................................................................................13
Fault monitoring and reaction.................................................................................................................................................. 15
Active fault reaction is activated after 500 ms of error (PVEA: 750 ms). .............................................................. 15
Passive fault reaction is activated after 250 ms of error (PVEA: 750 ms).............................................................. 15
The solenoid valves are disabled when:...........................................................................................................................16
Spool position feedback (-SP)....................................................................................................................................................16
Direction indication feedback (-DI)......................................................................................................................................... 17
Solenoid disabling function (-NP)............................................................................................................................................ 18
Building in safety............................................................................................................................................................................19
FMEA (Failure Mode and Effect Analysis) IEC EN 61508............................................................................................. 19
Hazard and risk analysis ISO 12100-1 / 14121................................................................................................................ 19
Control system example..............................................................................................................................................................19
Typical wiring block diagram example.............................................................................................................................21
Example of fault monitoring.................................................................................................................................................23
PVG 32 - mainly used in system with fixed displacement pumps......................................................................... 23
PVG100 - Alternative LS dump or pilot supply disconnect...................................................................................... 24
PVG120 - Pump disconnect/block for variable pumps.............................................................................................. 24
PVE control by voltage................................................................................................................................................................. 25
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PLUS+1 compliance............................................................................................................................................................... 25
ATEX PVE......................................................................................................................................................................................26
PVEU-PVE with fixed control signal range...................................................................................................................... 26
PVE controlled with PWM signal......................................................................................................................................... 26
PVEP.................................................................................................................................................................................................... 27
PVEO................................................................................................................................................................................................... 28
PVE ON/OFF activation........................................................................................................................................................... 28
PVE for float spool..........................................................................................................................................................................28
There are two variants of float spool PVBS......................................................................................................................28
PVHC control....................................................................................................................................................................................31
PVE hysteresis..................................................................................................................................................................................31
Example of PVE use....................................................................................................................................................................... 32
PVE operating parameters .........................................................................................................................................................34
PVHC control specification......................................................................................................................................................... 35
PVEO and PVEM control specification.................................................................................................................................... 36
PVEA, PVEH, PVES and PVEU control specification ........................................................................................................... 36
PVEP control specification.......................................................................................................................................................... 37
520L0553 • Rev GD • Jan 2014 3