14
2TLC172015M0201, rev. D
www.abb.com/lowvoltage
2,0
1,8
1,5
1,2
1,0
0,8
0,5
0,2
-0,2
-0,5
-0,8
-1,0
-1,2
-1,5
-1,8
-2,0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Type 4
Operating range R in meter
Minimum distance d in meter
3.4 Distance to Ref lecting Surfaces
The barrier should be mounted so that the risk of ref lection from ref lecting surfaces is minimized. The
minimum distance to a ref lecting surface is shown below.
R
EAA
EAA
d
Operating range R:
is the effective working range of the Focus II system, from the transmitter to
the
receiver.
EAA:
is the effective aperture angle of the Safety Sensor.
It is ±2.5° for FII-4....
distance d:
is the minimum distance to a ref lective surface.
This distance must be greater than:
d
min
FII-4 = tan(2.5°)×R
Be aware that surface interference may also appear above and below the sensing f ield.
