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Specification:
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IR photobeam with beam rotation 90° each way. Standard wiring of power and isolated relay contact.
The relay output can be set normally closed for safety circuits or normally open for activation. The setting is by a jumper link next to the relay. When the power fails in normally connected mode, the contact goes open circuit (fail safe). When the power fails in normally open mode, the contact closes.
When two or more photobeams are installed near to each other there is a risk of crosstalk. There are three frequency options set on jumper links so that adjacent beams can work on different channels. The transmitter and receiver must be set the same.
There is a white LED indicating the beam is interrupted. It is off in normal correct alignment. The housing is sealed with a rubber grommet. We recommend spraying the inside with WD40 or similar to deter insects.
We recommend photobeams are mounted at least 20cm above ground to avoid reflected light off wet surfaces. Although the range is 20m, it can be difficult to keep the beams aligned sufficiently for reliable operation, and for immunity to vibration and post movement.
Applications
