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F3SP-U5P-TGR
User's manual
23
7.4 OVERRIDE.
This function makes it possible to force a muting condition, if it is
necessary to start the machine despite one or more rays have been
interrupted by the material. The aim is that of removing from the protected
area the material which has possibly gathered before the photocells for
instance because of a failure of the machine cycle.
Let’s suppose that a pallet has stopped before one or more used optical
devices; the conveyor belt cannot be started again because the control
unit - after having detected one or more interrupted rays - will not close the
safety outputs, thus making it impossible to free the controlled area.
By starting the override function, it will be possible to carry out this
operation.
7.5
STARTING THE OVERRIDE FUNCTION.
•
Switch off the control unit.
•
Make sure that the TEST and RESET buttons are connected. (N.C.
for the TEST button, N.O. for the RESET button).
•
Switch on the control unit.
•
Within 10 seconds, press together the test and reset buttons and
keep pressing. (At each switching on operation, a test is carried out
to check that the buttons are not locked).
•
The override function has been activated. The display visualises
three overlapping segments. The muting lamp blinks to signal the
light curtain disconnection.
•
The maximum duration of the override function amounts to 60
seconds after that the light curtain is connected again even if the
buttons are pressed. If the buttons are released before this time has
elapsed, the override function will be immediately stopped.
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