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L4540
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8.12 Automatic Screen
Figure 30: Automatic Screen Details
Automatic screen contains similar elements to the
Manual screen (Figure 28). The only changes are
elements shown in Figure 30.
In this work mode the user inputs a distance increment
towards which the cylinder moves.
In this screen there are the following elements:
1. Automatic button: Select this button to activate
the automatic mode in the movement. When this
button is selected, the background color of the
button will become green.
2. Delta Position value: The user must type in this
box the increment of the current position which
the cylinder must reach in the next cycle. This
increment can be positive (if extending cylinders)
or negative (if retracting cylinders).
When the cylinder calibration has been performed, the
system will not let the user type a value higher than
the stroke capacity of the cylinder. It is important the
parameter of the cylinder stroke is correctly entered
into the Spans screen (paragraph 8.4) to avoid cylinder
damage.
When the cylinder calibration is not performed the
system will use as the limit of stroke the stroke sensor
maximum range, to avoid stroke sensor damage.
8.13 Fast Retract Screen
Figure 31: Fast Retract Screen Details
Through this mode the operator can retract the cylinder
faster after the load has been secured by another
mechanical means. Pushing the button and start cycle
in the console, oil will be redirected to tank through the
shortest and fastest way to reduce the time for retracting
the plunger of the cylinder.
In this screen there is the following element:
1. Fast Retract mode button: Select this button to
set the fast retract movement in the system. When
this button is selected, the background color of
the button will become green.
WARNING
Never select this work mode if the cylinder still holds
load. The retraction with this method can cause an
uncontrolled retraction and uneven lowering will
result.
Refer to paragraph 9.8 for further details on how to use
this work mode.
8.14 Depressurize Screen
Figure 32: Depressurize Screen Details
Depressurize screen contains similar elements to
the Manual screen (Figure 28). The only changes are
elements shown in Figure 32.
1. Depressurize mode button: Select this button to
set the depressurize movement in the system.
When this button is selected, the background
color of the button will become green.
After working with the system, hoses and jacks may
still contain some residual pressure. Using this work
mode, the system will relase the total pressure of all the
equipment (pumps, pipes, hoses and cylinders).
When this working mode is used, a warning screen will
remind the operator of the risk taken when using this
working mode with the cylinder withstanding load.
WARNING
It is totally forbidden depressurizing the system
while load is over the cylinder. Death or serious
personal injury and property damage could result if
the system’s pressure is released with load on the
cylinder.
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