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Section 1 Description
1-2-3 Muting function
The muting function makes it possible to inactivate one or both light curtains in order to
allow, for instance, the objects passage without stopping the machine.
The F3SP has muting sensor inputs for the activation of this function. The muting
sensor A and B controls light curtain 1, as well as muting sensor C and D controls light
curtain 2.
For muting sensor, PNP transistor output type or N.O. contact output type is
applicable (photoelectric sensor, proximity sensor, etc.)
It is necessary to position and connect the muting sensors in order to avoid undesired
muting inputs.
It is important to remember that the muting function forces the system to work
and for this reason it must be used with care.
For detail, refer to 4-2 Muting function.
1-2-4 Override function
This function makes it possible to force a muting condition, if necessary by starting
the machine despite one or both safety light curtains having been interrupted by the
object. Thus enabling removal of the material from the protected area, when it has
been stuck in the beam of the safety light curtains due to a failure.
Suppose that a pallet has stopped before the light curtains; the conveyor belt
cannot be started again because the F3SP - after having detected one or more
interrupted light curtains- will not close the output contacts, thus making it
impossible to free the controlled area.
By starting the override function, it will be possible to carry out this operation.
It is important to remember that the override function, as well as muting function,
forces the system to work and for this reason it must be used with care.
For detail, refer to 4-3 Override function.
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