Series 51 Hydraulic Proportional Controls HZ, HA ... - Sauer-Danfoss
Series 51 Hydraulic Proportional Controls HZ, HA ... - Sauer-Danfoss
Series 51 Hydraulic Proportional Controls HZ, HA ... - Sauer-Danfoss
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General Description<br />
(continued)<br />
<strong>Series</strong> <strong>51</strong> <strong>Hydraulic</strong> <strong>Proportional</strong> <strong>Controls</strong><br />
Service Manual<br />
Introduction<br />
Multiblock<br />
Some hydraulic proportional controls are used in conjunction with the multiblock. The<br />
multiblock is a manifold with a shuttle-valve that routes high loop (system pressure)<br />
from port A or port B to the 4-way valve to serve as servo supply and to the PCOR<br />
function. The shuttle valve also routes the low pressure side of the loop to the PCOR<br />
function.<br />
Multifunction Schematic<br />
PCOR Valve<br />
BPD Spool<br />
U7<br />
T5<br />
11009446 • Rev AC • November 2010<br />
U6<br />
T4<br />
T6<br />
A<br />
XA XB B<br />
Multiblock<br />
Shuttle<br />
L2 M4 M3 N<br />
M7 X1<br />
Loop Flush<br />
T2<br />
T1<br />
max.<br />
disp.<br />
T3<br />
T7 T8<br />
Control<br />
4-Way Valve<br />
n<br />
M1<br />
L1<br />
M5<br />
M2<br />
P106 417E<br />
9
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