Mode Types; Basic Functions - Danfoss H1 Technical Information

Technical Information
Control options
H1 Axial Piston Pump Size 045/053, Single
CC3
P003 544
The H1 Automotive Control is divided into 2 systems, AC-1 and AC-2. AC-2 is an extension of AC-1 that
features an integrated pump swash plate angle sensor and software enabled functions such as Swash
Plate Control and Flow Limiter.

Mode types

The application software provides 3 different hydrostatic propel methods, defined as mode types, which
can be used individually.
•
"Automotive" Load dependent (torque controlled) driving behavior. Setpoint for the drive curve is
the engine rpm.
•
"Non-Automotive" Load independent (speed controlled) driving mode. The setpoint for the drive
curve is a Joystick or pedal signal, independent of the engine rpm. The best performance will
achieved with an AC-2 Swash Plate Angle Sensor.
•
"Creep-Automotive" Load dependent (torque controlled) driving behavior (like Automotive). Setpoint
for the drive curve is the engine rpm. The setpoint can be reduced by the creep potentiometer if a
high engine rpm in combination with low vehicle speed is needed.

Basic functions

•
Four selectable system modes, selectable via switch.
•
Individual settings for forward and reverse driving direction (4 x 2 curves).
•
Independent pump and hydraulic-motor profiling and ramping for each mode.
•
Electric drive pedal connection
•
Electronic inching function without separate control valve
•
Electric creep mode potentiometer
•
Proportional pump displacement control (automotive)
•
Configurable System Mode & Direction change
•
Load independent pump displacement control with integrated Swash Plate Angle Sensor (option
AC-2)
•
Hydraulic-motor displacement control including brake pressure defeat function
11063344 • Rev HA • Mar 2014 21