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GENERALGENERAL
ULISSE UNC is a barrier type photocell consisting of a separate emitter and a receiver.
Whether connected to the control units, AU S3, AU S-TWIN, or to the control unit with
built-in muting function, AU S3M2, ULISSE UNC represents a type 2 safety system with one,
two, three or four (AU S-TWIN) beams, suitable for the protection against accidents of
people exposed to hazards on dangerous machinery. The metal container and the glass
lenses make the product extremely sturdy and immune to the electrostatic attraction of dust,
i.e., ideally suited for use in the textile processing plants.
The switching of the output relays of the control unit upon the interception of the beam stops
the movement of machine tools with mechanical moving parts, such as, for instance:
•Looms;
•Assembly lines;
•Automated industrial warehousing systems;
•Robotised areas;
•Handling, palletising/de-palletising systems.
The protection function will not work if:The protection function will not work if:
FThe control part of the machine cannot be controlled electrically or is unable toThe control part of the machine cannot be controlled electrically or is unable to
stop the hazardous movement at once and at any time in the course of thestop the hazardous movement at once and at any time in the course of the
processingcycle.processingcycle.
FThe hazard condition is associated with the risk of objects falling from above orThe hazard condition is associated with the risk of objects falling from above or
ejected from the machine.ejected from the machine.
FFor applications in the food processing industry, contact the manufacturer toFor applications in the food processing industry, contact the manufacturer to
assess the compatibility between the photocell material and the chemical agentsassess the compatibility between the photocell material and the chemical agents
employed.employed.
FFor questions affecting safety, if necessary, consult the authorities responsibleFor questions affecting safety, if necessary, consult the authorities responsible
for safety-related matters in your country, or the cognisant manufacturers'for safety-related matters in your country, or the cognisant manufacturers'
association.association.
OPERATIONOPERATION
The ULISSE UNC safety system may consist of one two, three or four emitter/receiver pairs
connected to a control unit. This system is able to detect the passage of a person’s entire
body and cannot be used for the protection of arms and hands.
Whenever the optical path of the infrared beam linking the emitter to the receiver is totally
interrupted, the receiver cuts off the output signal. Upon recognising this condition, the
control unit immediately de-energises its outputs thereby preventing the coming into being of
a hazard condition.
When the beam is released, the system restart depends on the positive outcome of the test
function. The test is conducted as follows:
•the control unit turns off the emitter;
•the receiver detects the interruption of the beam and cuts off the output signal;
•the control unit checks the adequacy of the reaction time of the receiver, the outputs of
the latter and the external relays, if any are used.
This test is controlled externally, by pressing a special test button.
