107026-11-EN FR26 ROW 302 Printed in France 11
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
must immediately cause a stoppage within the response time of the
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
minimum, 1,5 mm
2
(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
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