Selecting the type of control
Three buttons (3, 7 and 8 - Fig 2) are used to select the type of control, namely wheelslip, position and draft respectively.
Each of these functions can be selected as main or secondary.
An indicator on the right hand side of the button denotes the status of the relative function:
— Indicator off = Deselected
— Red indicator = Main
— Green indicator = Secondary
When a given function is selected as the main control, the signals from the various sensors (position sensors for position
control, draft sensors for draft control, Radar plus wheel speed and draft sensors for wheelslip control) are monitored
continuously by the computer, and each marginal variation in level triggers a corrective movement of the lift arms to
maintain the selected set point.
When any function is selected as secondary, the computer again monitors the signals from the various sensors
continuously, but a movement of the arms is triggered only on exceeding a preset threshold.
To select any function as a main control function, the driver must press the relative button when the system is idle
and the STOP indicator alight. If a main control function has already been selected, this must first be deselected by
pressing the relative button, and the button of the required function then pressed. A main control can only be selected
in the STOP condition. Only one main control function can be activated at a time.
To select any function as secondary, the relative button must be pressed only with the system in the control mode
(STOP light off).
Setting the maximum height
Pressing the top half (5 - Fig 2) of the rocker switch, the implement is lifted to the maximum height. If during the ascent
movement the height button (2 - Fig 2) is pressed, the implement stops rising and the indicator on the left of the switch
lights up to denote that a maximum height limit is selected. Thereafter, every time the top half (5 - Fig 2) of the rocker
switch is pressed, the implement will be raised by the lift arms to the height memorized previously, and held there.
To remove the limiting function, the height button (2 - Fig 2) must be pressed and held for 3 seconds, until the indicator
light goes out.
Lock and Unlock button
When switched on, the system will default to Lock mode.
In this condition
➦ The console will not acknowledge any command;
➦ The red indicator alongside the Lock button (1 - Fig 2) is alight;
➦ position control only is activated, and the position will be corrected if the implement drops due to the pressure relief
valve being activated or if pressure drops internally of the rams.
59
5
vehicle
electronic power-lift
232
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