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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