Pressure Compensated System Characteristics; Typical Applications For Pressure Compensated Systems; Typical Applications For Remote Pressure Compensated Systems - Danfoss PVG 100 Technical Information

Technical Information
PVG 100 Proportional Valve Group
Function
16 | © Danfoss | May 2018
Typical operating curve
Q max
0
0 Pressur e
Once the closed center valve is opened, the PC control senses the immediate drop in system pressure
and increases pump flow by increasing the swashplate angle.
The pump continues to increase flow until system pressure reaches the PC setting. If system pressure
exceeds the PC setting, the PC control reduces the swashplate angle to maintain system pressure by
reducing flow.
The 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 outlet line. * Do not use the PVG 32
with bleed down load sense control.

Pressure compensated system characteristics

•
Constant pressure and variable flow
•
High pressure standby mode when flow is not needed
•
System flow adjusts to meet system requirements
•
Single pump can provide flow to multiple work functions
•
Quick response to system flow and pressure requirements

Typical applications for pressure compensated systems

•
Constant force cylinders (bailers, compactors, refuse trucks)
•
On/off fan drives
•
Drill rigs
•
Sweepers
•
Trenchers

Typical applications for remote pressure compensated systems:

•
Modulating fan drives
•
Anti-stall control with engine speed feedback
•
Front wheel assist
Simple closed-center circuit
P101 166E
P101 965
520L0720 | BC00000039en-US0502