Automotive Control (AC)
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.
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CAN
PPC
PSC
PPU
CC2
CC1
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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
Technical Information
H1 Axial Piston Single Pumps, Size 045/053
Control Options
©
Danfoss | May 2017
11063344 | BC00000059en-US1001 | 29
