Sauer Danfoss 51 Series Service Manual page 8

Bent Axis Variable Displacement Motors
Functional Description (Continued)
Fig. 10-8 - Series 51 Motor with N2 Control
Fig. 10-9 - N2 Control Components
L2 M6
A
U4 (opt.)
B
L1
Fig. 10-10 - N2 Control Schematic
8
(M4) Y1 Y2 (M3)
M1
max.
disp.
M2
Hydraulic 2-Position Control (Type N2)
This is a two (2) position (maximum - minimum
displacement) control, consisting of a cover plate
mounted on the end cap. An external control valve
supplies servo pressure from an external source
directly to the servo piston. PCOR is not available
with the N2 control.
When servo pressure is supplied to port "Y1," the
setting piston moves to the maximum motor displace-
51000009
ment position. When servo pressure is supplied to
port "Y2," the setting piston moves to the minimum
motor displacement position.
Orifices may be installed in the external control valve
or its connections to regulate the speed of servo
piston movement.
51000010
51000011
Series 51
10 - 4