Omron Sti F3SJ-E N25 Series User Manual page 59

Height of
hazardou 900 1000
s zone, a
2600 0 0
2500 400 400
2400 550 550
2200 800 750
2000 950 950
1800 1100 1100
1600 1150 1150
1400 1200 1200
1200 1200 1200
1000 1200 1150
800 1150 1050
600 1050 950
400 900 700
200 600 0
0 0 0
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 upper edge of detection zone, b
1100 1200 1300 1400
Additional distance to hazardous zone, Cro
0 0 0 0
350 300 300 300
550 500 450 450
750 700 650 650
850 850 800 750
950 950 850 800
1100 1000 900 850
1100 1000 900 850
1100 1000 850 800
1050 950 750 700
950 800 500 450
750 550 0 0
0 0 0 0
0 0 0 0
0 0 0 0
Wiring/Installation
1600 1800 2000 2200
0 0 0 0
300 300 250 150
400 400 300 250
600 550 400 250
700 550 400 0
750 550 0 0
750 450 0 0
650 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
2400 2600
0 0
100 0
100 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
E
F3SJ-E/B
43
User's Manual