Page 11 - Parker - P1/PD series medium duty axial piston pumps

HY28-2665-01/P1/EN Medium Duty Axial Piston Pumps
Technical Information P1/PD Series

Control Options “AE” and “AF”
Pilot Operated Pressure Limiter Control with
Proportional Electronic Adjustment

This control allows the pump pressure compensa- The following are recommended to drive the
tor setting to be adjusted by an on-board 4VP01 proportional valve on the AE or AF pump:
proportional, electronic relief valve. The control acts Parker Part# Description
such that full pump displacement is achieved unless 027-22071-0 Dual Driver Module (12/24V)
the system valve restricts the output flow or the load 027-22067-0 Plug-Top-Driver 12V (0-10V command)
pressure reaches the maximum setting of the control. 027-22066-0 Plug-Top-Driver 24V (0-10V command)
If pump flow is restricted by the system valve, the 701-00600-8 Proportional Amplifier 12V (Eurocard)
pump will provide only the flow demanded, but at the 701-00601-8 Proportional Amplifier 24V (Eurocard)
EX00-S05 Eurocard Holder
maximum pressure setting of the compensator con-
trol. If the outlet flow is completely blocked, the pump Note: Consult Factory for more driver options and information.
will destroke to zero displacement and maintain the
pressure at the setting of the relief valve.

pilot-operated pressure limiter control
pilot-operated pressure limiter control with minimum displacement stop
4 bar maximum
4 bar maximum

flow flow

pressure pressure
B V B V
) ( .8mm ) ( .8mm
P P

T T
BG BG
4VP01 4VP01

D3 D3
D2 D2
A D1 A D1

“AE” and “AF” “AE” and “AF”
Pilot Operated Pressure Limiter Control with Optional Minimum & Maximum
with Proportional Electcronic Adjustment Displacement Adjustments and
Case-to-Inlet Check Valve
(A minimum displacement stop requires
AE denotes the 12vdc soleniod.
the use of a system relief valve.)
AF denotes the 24vdc soleniod.
Refer to page 4 for typical control characteristics.

Parker Hannifin Corporation
Hydraulic Pump Division
Marysville, Ohio USA 9