2TLC172287M0201 Rev B
17
www.abb.com/jokabsafety
2015-09-17
3.2.5
Transmitter and receiver orientation
The two units shall be assembled parallel to each other, with the beams positioned at right angles to the transmitting
and receiving surfaces, and with the connectors pointing towards the same direction.
The configurations shown in Figure 14 must be avoided.
Figure 14
– Incorrect orientation
3.2.6
Use of deviating mirrors
The control of any hazard zone, with several but adjacent access sides, is possible using only one AOPD and well-
positioned deviating mirrors.
Figure 15 shows a possible solution to control three different access sides, using two mirrors placed at 45° relative to
the beams.
Figure 15
– Use of deviating mirrors
NB: The following precautions must be respected when using the deviating mirrors:
The alignment of the transmitter and the receiver can be a very critical operation when deviating mirrors are
used. Even a very small displacement of the mirror is enough to loose alignment. The use of an Orion laser
pointer (available as accessory) is recommended in these conditions.
The minimum installation distance (S) must be respected for each single section of the beams.
The effective operating range decreases by about 15% by using only one deviating mirror, the percentage
further decreases by using 2 or more mirrors (for more details, refer to the technical specifications of the
mirrors used).
Do not use more than three mirrors for each device.
NO
NO