Automotive Control (Ac); Mode Types; Basic Functions - Danfoss H1 Series Technical Information

Technical Information
H1P 115/130 Axial Piston Single Pumps
Control Options

Automotive Control (AC)

30 | © Danfoss | May 2018
The H1 Automotive Control (AC) is an electric NFPE Control with an integrated microcontroller, installed
on the pump. The integrated microcontroller enhanced control performance with a flexible, configurable
control scheme for an entire single path propel transmission. It can be used in combination with fixed
and variable displacement hydraulic-motors. With the pre-installed application software and easily
changeable control parameters, it is possible to tailor the vehicle's driving behavior to the individual
requirements of the customer.
CC3
The H1 Automotive Control is divided into 2 systems:
•
AC-1
•
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.

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. Setpoint for the drive curve is
a Joystick or drive 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
P003 544
BC00000198en-US0901