8-2
SAS CONFIGURATION
■ General
The SAS (System of Active Stability) has been developed with the following concepts:
(1) To develop forklift trucks that can be clearly distinguished by customers from other makes in
respect to both “safety” and “engineering”.
(2) To pursue “carefree material handling”.
■ Targets of sas control
■ SAS System configuration
Sensors are installed in various places on the vehicle to detect the vehicle movement and send signals to
the controller. Signals are controlled by the controller and output to respective actuators for action.
Active Mast Function Controller
Active Steering Synchronizer
with FHPS
(1) Longitudinal stability is improved by adopting
the mast forward tilt angle control.
(2) Mast backward tilt angle speed control is
adopted to prevent load from falling.
(3) Automatic fork leveling control is adopted to
improve operating efficiency.
(4) Key-lift interlock is adopted.
Characteristics of turning and straight traveling is
improved by developing FHPS
FHPS:Full Hydraulic Power Steering
Input
Lifting height switch
Tilt angle sensor
Forward tilt limit switch
Backward tilt limit switch
Tilt knob switch
Load sensor
Traveling speed sensor
Steering angle sensor
Tire angle sensor
TK
Controller
Output
Actuator
Integral control valve
Steering synchronizer
solenoid
LCD display
• Diagnosis
control
T
K
T • K
T:Active mast function controller
K:Active steering Synchronizer
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