21
F3SJ-B
User’s Manual
Ch
apt
e
r
3
In
st
alla
tion Condit
io
n
s
Wiring/Installation
E
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 F3SJ-E/B 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 = 0.01 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 + 0.01 s) + 850 mm
= 970 mm
Since 970 mm is greater than 500 mm, use K = 1,600 mm/s and recalculate it.
S = 1,600 m/s × (0.05 s + 0.01 s) + 850 mm
= 946 mm
Compare S = 946 mm with the calculation in "If a person approaches the detection zone of the F3SJ
perpendicularly", and choose the larger value as the safety distance.
For the system with a detection capability of 40 mm max., the safety distance S is 946 mm since this
is larger than S = 120 mm calculated in the calculation example of "If a person approaches the
detection zone of the F3SJ perpendicularly".
For the system with a detection capability larger than 40 mm, the safety distance S is 946 mm since
this is the same value as S = 946 mm calculated in the calculation example of "If a person
approaches the detection zone of the F3SJ perpendicularly".
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
Summary of Contents for F3SJ-B Series
Page 1: ...F3SJ B N25 01T Series Safety Light Curtain User s Manual Cat No SCHG 735E...
Page 12: ...x Introduction F3SJ B User s Manual...
Page 30: ...16 Chapter 2 Description of Functions F3SJ B User s Manual System Configuration and Functions...
Page 84: ...70 Chapter 3 Wiring F3SJ B User s Manual Wiring Installation...
Page 90: ...76 Chapter 4 Wiring Examples F3SJ B User s Manual Input Output Circuit and Applications...
Page 96: ...82 Chapter 5 Maintenance Checklists F3SJ B User s Manual Checklists...