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Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Electro hydraulic proportional controls version 45 for
axial piston pumps, PV series
Bulletin MSG30-3254-INST/UK
Installation and setup manual
1. table of available electro hydraulical controls
FDV Function description
The proportional displacement control allows a
continuous variation of the pump displacement
according to an electrical input command. A
contactless inductiv position sensor (CIP-Sen-
sor) measures the position of the servo piston
and provides an information on the actual dis-
placement (signal, displacement) to the control
Electro hydraulical controls
Code Control designs
F D V
closed loop displacement control with PVCMD1FB*** valve, no pressure
compensation, standard design from 07.2015
U D
closed loop displacement control with PVCMD1FB*** valve, with pressure
compensation, standard design from 07.2015
Code option
R pilot operated pressure control, NG6 interface
K
as option R, additional proportional pressure valve PVACRE***K** mounted
M
as option K, additional pressure sensor PVACMS mounted for closed loop
pressure control
P pilot operated pressure control, NG6 interface, for pre load and quick unload manifold
F
as option P for pre load and quick unload manifold, additional PVACMS and
PVACRE***K** mounted for closed loop pressure control
S pilot operated pressure control, NG6 interface, for quick unload manifold
Q
as option S for quick unload manifold, additional PVACMS and PVACRE***K**
mounted for closed loop pressure control
pressure p
1
flow Q
displacement
Figure 1 pQ Diagram …FDV (old:FPV)
2. Proportional displacement control, code …FDV (old: FPV)
electronic. The servo piston is kept by the servo
spring and the pump outlet pressure on its an-
nulus area at maximum displacement. The larger
piston area is pressurized by the control valve.
Figure 2 shows the circuit diagram of a pump
with this control.
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