Minimum Distance Between Adjacent Devices - ABB Orion1 Base Original Instructions Manual

The formula to get D for a Type 4 AOPD is the following:
sr
D (m) = 0.15
sr
D (m) = 0.5 × operating distance (m) × tan (2)
sr
Warning! If the reflecting surface is the floor, the calculated D
still must be respected.
3.2.3

Minimum distance between adjacent devices

When several AOPDs must be installed close to each other, the transmitter of one device must not interfere
hazardously with the receiver of the other device.
The TX interfering device must be positioned outside a minimum D
B
transmitter-receiver couple, see figure below.
This minimum D distance depends on:
do

the operating distance between transmitter (TX

the effective aperture angle of the AOPD (EAA):
For a Type 4 AOPD, EAA
The diagram below shows the distance to the interfering devices (D
– RX
couple (TX ) for a Type 4 AOPD.
A A
Figure 12 – Minimum distance to an adjacent device as a function of the operating distance
The formula to get D for a Type 4 AOPD is the following:
do
D (m) = 0.3
do
D (m) = operating distance (m) × tan (2)
do
2TLC172287M0201 Rev B
2015-09-17
for operating distance < 3 m
for operating distance  3 m
Figure 11 – Distance between adjacent devices
) and receiver (RX
A
= 5° (α = ± 2.5°).
MAX
for operating distance < 3 m
for operating distance  3 m
can be less than the correct height to the floor that
sr
distance from the axis of the TX
do
),
A
) based on the operating distance (D
do
15
– RX
A A
) of the
op
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