Examples Using Load-Sensing Hydraulic System- Power-Beyond

Example 1 -Control valves with a load sense port can be operated manually or by solenoids. These valves provide a load-sense signal to tractor hydraulic system.

IMPORTANT: Circuit allows cylinder "leak-down" through load-sense line (C). If leakage is not acceptable for operation, use Example 3.

Example 2 -Regular control valve directs oil into either of two circuits, only one requiring pressure above 2600 kPa (26.0 bar) (380 psi). Connect load-sense line to circuit requiring pressure. A common example would be a wagon lift cylinder where load is supported by mechanical stops in the full down position-load-sense line signals pump when increased pressure is needed. Pressure remains low when not needed.

A-Pressure Line
B-Return Line
C-Load-Sense Line
D-Control Valve
E-Cylinder

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Example 3 -Regular control valve directs oil into either of two circuits, either requiring high pressure. Connect load-sense line to pressure line before control valve.

NOTE: System will maintain a maximum pressure of 20 000 kPa (200 bar) (2900 psi) as long as Power-Beyond hoses are connected. If other functions are operating at continuous flow, increased hydraulic oil temperature may result.

A common example would be a folding implement, where pressure is needed to extend or retract cylinders. Disconnect Power- Beyond hoses when not in use.

Example 4 -Pressure-compensated flow control valve is used to regulate hydraulic motor speed or flow. Connect load-sense line to pressure line after control valve.

NOTE: Motor speed may fluctuate when other functions cause hydraulic system pressure change. This condition is normal. To prevent fluctuations, install a pressure-compensated flow control valve.

A-Pressure Line
B-Return Line
C-Load-Sense Line
D-Control Valve
E-Cylinder
F-Pressure-Compensated Flow Valve
G-Hydraulic Motor

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