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Service Manual
D1 High Power Open Circuit Pumps Size 65/130/145/193/260
Operation
TPSN (Power Control + Pressure Compensated Control + Load Sensing Control)
©
Danfoss | July 2019
Power Control (T) Principle
The power control regulates the displacement of the pump depending on the working pressure so that a
given drive power is not exceeded at constant drive speed, this function can prevent engine stall or
protect electric generator.
P
= working pressure
B
P
• V
= C
V
= displacement
B
g
g
C = constant
The precise control with a hyperbolic control characteristic, provides an optimum utilization of available
power.
D1P 130/145+TPSN
X
(1)
B
MB
Vg max
Vg min
L3
S
M4
L1
D1P 193/260+TPSN
*Control oil filter is optional
(1)
B
MB
Vg max
Vg min
CW
L3
S
M4 L1
L1527453 | AX00000292en-CN0201 | 15
L2
P400251
X
L2
P400080
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