Hydraulic Proportional With Pcor; Hydraulic Two-Position With Pcor - Danfoss H1 Series Technical Information

Technical Information
H1 Bent Axis Variable Displacement Motors, Size 060/080/110/160/210/250
Control operation and description

Hydraulic proportional with PCOR

Hydraulic two-position with PCOR

© Danfoss | December 2016
In the energized (pressurized) state, the hydraulic proportional control keeps the motor at minimum
displacement until system pressure rises above the PCOR setting.
When the PCOR activates, it ports high system pressure to the larger end of the servo piston, increasing
the motor displacement to maximum.
In the non-pressurized state, the hydraulic two-position control supplies both sides of the servo piston
and keeps the motor at minimum displacement as long as the high loop pressure remains below the
pressure compensator setting.
If the high loop pressure rises above the pressure compensator setting, the porting spool ports the larger
diameter of the servo piston to tank.
The motor strokes in the direction of maximum displacement.
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