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4. Electrical connection
4.1
Conditions of use
Connection of the photoelectric barriers to the control circuit of a press must be carried out in such a way that the
outputs (relays with guided contacts) are systematically self-checked at each cycle.
After connection of a photoelectric barrier to the control circuit of a press, the following safety functions must be
checked:
-
each interruption of one or more beams of the barrier during a dangerous phase of the operating cycle of the
moving parts of the press
components ,
the clearing of the detection zone must not start the operation of the machine . It is therefore necessary
-
to set the press in motion using the normal control sequence of the press when re-starting,
-
the switching of the electrical supply must not set the machine parts in motion, especially after an
interruption during a cycle . It is therefore necessary to set the press in motion using the normal control
sequence,
-
the malfunction of a component of the control circuit of the press must not cause any risks,
-
the additional safety devices, of those which are used for other functions of the press, must always be effective.
Wiring instructions
•
Connection are made through quick disconnect metal DIN 43652 plugs delivered with the light curtain
•
Cross sectional area of stranded wires to be crimped (metal DIN 43652 plugs only): 0,5 mm2 (AWG20) as a
2
minimum, 1,5 mm
(AWG16) as a maximum
•
Packing Glands and allowed cable diameters to guarantee the IP 65/NEMA 4, 13 sealing (metal DIN 43652 plugs
only) : PG 9 for the emitter plug (allowed cable diameters : 5,5 mm to 8,7 mm / 0.22 in to 0.34 in), PG21 for the
receiver plug (allowed cable diameters : 11 mm to 19 mm / 0.44 in to 0.74 in).
•
For the emitter plug:
PG 9: allowed cable diameters : 5 mm to 8,7 mm
•
For the receiver plug:
PG 21: allowed cable diameters: 11 mm to 10 mm
PG 13: allowed cable diameters: 8,5 mm to 13,5 mm
107026-11-EN FR26 ROW 302 Printed in France
must immediately cause a stoppage within the response time of the
11
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