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Dimensions B, C, and F
B
C - 90
C
4-digit number of the model name (protective height)
F
Depends on the protective height. See the table
below.
Dimension F
Number of intermediate
Protective height
mounting brackets
245 to 440
2
443 to 785
3
794 to 1140
4
1145 to 1490
5
1495 to 1840
6
1845 to 2180
7
2195 to 2500
8
*1. Use F = 350 or less when none of the F values shown above are used.
When only F39-LJ3 free-location mounting brackets are used without standard brackets, allow a space
of at least 350mm between the brackets. The number of brackets required varies according to the
protective height. For details about the number of required brackets, refer to the table below.
The intermediate mounting brackets shipped with the product are the same as the F39-LJ3 free-
location mounting brackets. Purchase brackets as necessary if there are fewer intermediate mounting
brackets than required. When intermediate mounting brackets are included, they can be used as free-
location mounting brackets.
Required number of F39-LJ3 free-location mounting brackets (2 pieces are included with F39-LJ3) for
1 F3SJ set (emitter/receiver)
Protective height
245 to 440
443 to 596
600 to 785
794 to 1130
1136 to 1140
1145 to 1490
1495 to 1658
1660 to 1840
1845 to 2180
2195 to 2500
F*1
-
B/2
B/3
B/4
B/5
B/6
B/7
Number of free-location
mounting brackets included
as
intermediate mounting
brackets
0
4
0
6
2
6
2
8
4
8
4
10
4
12
6
12
6
14
8
16
Number of free-location
mounting brackets required
sets (number of brackets) that
for mounting F3SJ
2 sets (4)
3 sets (6)
2 sets (4)
3 sets (6)
2 sets (4)
3 sets (6)
4 sets (8)
3 sets (6)
4 sets (8)
4 sets (8)
Wiring/Installation
Number of additional free-
location mounting bracket
need to be purchased
F3SJ-A
User's Manual
E
133
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