IHI IC75-2 Operation Manual page 65

Details of the Automatic Mode
The travel speed of the machine is determined by the engine revolutions and the hydraulic pump
discharge amount (pump tilt angle), which is also affected by ground condition such as uphill and
downhill, road surface conditions, load of travel such as the presence of loads on the vessel.
In the automatic mode, the linked control of engine revolutions and hydraulic pump are
performed in response to travel speed commands input by joystick, and, by changing these
automatically according to load of travel, stable travel speeds are achieved.
• Relationships between the joystick and the accelerator pedal in the automatic mode
Maximum speed
Very slow speed
When the travel speed control dial is at the lowest
speed position
• Operating the joystick travels the machine at a speed
range from stop to very slow.
• Operating the accelerator pedal can adjust the speed
of travel from very slow to the maximum.
When the travel speed control dial is at the
intermediate speed position
• In addition to the travel speed range that can be
adjusted with the joystick, the accelerator pedal can be
used to adjust to the maximum speed.
When the travel speed control dial is at the highest
speed position
• Operating the joystick adjusts the travel speed in a
range from stop to the maximum.
• The operation of the accelerator pedal is disabled.
IC75-2 ENG
OPERATION
Maximum step on the
accelerator pedal
Amount of
accelerator pedal
operation
Stop
Travel speed control dial position
Low
speed
Maximum joystick
setting
Amount of joystick
operation
Low Low
speed speed
3-13
High
speed
High
speed