38
Chapter
4
Instal
lati
on C
o
nsider
a
tion
s
F3SG-4RA-25-02TS
User’s Manual
Wiring/Installation
Note 1. Upper edge of the detection zone below 900 mm is not included since they do not offer
sufficient protection against circumventing or stepping over.
Note 2. When determining the values of this table, it shall not be interpolated. If the known values a, b
or Cro are between two values of this table, the greater safety distance shall be used.
[Calculation example]
• T: Tm + Ts (s)
• Tm: Machine's response time (s)
• Ts: Response time of the F3SG-R from ON to OFF (s)
• a: Height of machine hazardous zone (mm)
• b: Height of upper edge of detection zone (mm)
When Tm = 0.05 s, Ts = 0.008 s, a = 1,400 mm, b = 1,500 m:
From the table above, Cro = 850 mm. Since b is between 1,400 mm and 1,600 mm, b = 1,400
mm which has the greater Cro value, shall be used.
S = 2,000 mm/s × (0.05 s + 0.008 s) + 850 mm
= 966 mm
Since 966 mm is greater than 500 mm, use K = 1,600 mm/s and recalculate it.
S = 1,600 m/s × (0.05 s + 0.008 s) + 850 mm
= 942.8 mm
Since S = 942.8 mm is greater than S = 204 mm calculated by the calculation example of
Detection Zone Orthogonal to Direction of Approach
, the required safety distance S is 942.8 mm.
Refer to
Detection Zone Orthogonal to Direction of Approach
Formulas according to ISO 13855/EN ISO 13855
.
Height of
hazardou
s zone, a
Height of upper edge of detection zone, b
900
1000
1100
1200
1300
1400
1600
1800
2000
2200
2400
2600
Additional distance to hazardous zone, Cro
2600
0
0
0
0
0
0
0
0
0
0
0
0
2500
400
400
350
300
300
300
300
300
250
150
100
0
2400
550
550
550
500
450
450
400
400
300
250
100
0
2200
800
750
750
700
650
650
600
550
400
250
0
0
2000
950
950
850
850
800
750
700
550
400
0
0
0
1800
1100
1100
950
950
850
800
750
550
0
0
0
0
1600
1150
1150
1100
1000
900
850
750
450
0
0
0
0
1400
1200
1200
1100
1000
900
850
650
0
0
0
0
0
1200
1200
1200
1100
1000
850
800
0
0
0
0
0
0
1000
1200
1150
1050
950
750
700
0
0
0
0
0
0
800
1150
1050
950
800
500
450
0
0
0
0
0
0
600
1050
950
750
550
0
0
0
0
0
0
0
0
400
900
700
0
0
0
0
0
0
0
0
0
0
200
600
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Содержание F3SG-R Series
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