Page 19 - Linde - HPV-02 Variable pumps for closed loop operation

Controls. Hydraulic H

The HPV-02 H1 features hydraulic control with a wide pilot pressure range for improved machine control. It can be combined with a
fixed, variable or regulating hydraulic motor. The data is specific for hydraulic controls, and independent of the nominal pump size
and pressure cut-off regulation PCO, unless specified otherwise otherwise (see section Controls. Control accuracy).

H1. Hydraulic control

Flow direction
By an external hydraulic signal input at the pilot pressure ports (Y, Z) the pump flow rate and direction of flow are controlled. The
flow direction of the fluid depends on the pump direction of rotation and the over centre direction of the swash plate.

High pressure outlet port

Shaft rotation
(view on Z)

Pilot pressure port Right hand Left hand

Y P S

Z S P

H1P. Hydraulic control with PCO
P, S High pressure ports
A Pressure port, charge pump
B Suction port, charge pump
F Feed port, charge and control
X Test port, pilot pressure
Ms, Mp Test ports, high pressure
L, U Drain ports
T Vent port
Y, Z Pilot pressure ports

Note for left hand rotation
A Suction port, charge pump
B Pressure port, charge pump

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