Honeywell FF-SPS4 Series Installation Manual page 28

Safety perimeter guarding

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Figure 2-6 Side by Side Installation

To ease installation (wiring), emitters may be pointed in the same direction, especially when

multiple systems are perimeter guarding the same side of a machine. To prevent any mutual

interference or crosstalk, select two different emission frequencies of infrared modulated light

by using the two internal switches F1 or F2 (see figure 2-7).

Figure 2-7 Selection of Different Emission Frequencies

The receiver R2 is not sensitive to the emission frequency F1 of the emitter E1 and its output

relays are energized if no object is breaking the beam. The receiver R1 is not sensitive to the

emission frequency F2 of the emitter E2 and its output relays are energized if no object stands

in the beam.

In some cases, mutual interferences can be cancelled by using two different emission frequencies and

by reversing the transmission direction of the through scan beams. This would be the case for a 3-beam

trip device for instance:

energized relays

107063-11 EN FR26 GLO 800 Printed in France

Arrow.com.

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Machine 1 Protection

energized relays

: Output status indicators located on the front plate of the receiver FF-SPR...

energized relays

(refer figures 1-6 and 1-7).

Machine 2 Protection

energized relays

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