Omron F3SJ-A series User Manual

47
F3SJ-A
User’s Manual
Chapter3 Installation Conditions
Wiring/Installation
E
 Safety Distance
The safety distance is the distance that must be set between the F3SJ and a machine's hazardous part
to stop the hazardous part before a person or object reaches it. The safety distance varies according to
the standards of each country and the individual specifications of each machine. Always refer to the
relevant standards.
Make sure to secure the safety distance (S) between the F3SJ and the hazardous part. Otherwise, the
machine may not stop before a person reaches the hazardous part, resulting in serious injury.
The response time of a machine is the time period from when the machine receives a stop signal to when the machine's
hazardous part stops. Measure the response time on the actual system. Also, periodically check that the response time
of the machine has not changed.
 How to calculate the safety distance specified by International Standard ISO 13855-
2002 (European standard EN999) (Reference)
If a person approaches the detection zone of the F3SJ perpendicularly
S = K x T + C . . . Formula (1)
• S: Safety distance
• K: Approach speed to the detection zone
• T: Total response time of the machine and F3SJ
• C: Additional distance calculated by the detection capability
of the F3SJ
<System that has detection capability of 40mm or less>
Use K = 2,000mm/s and C = 8 x (d - 14mm) in formula (1)
for the calculation.
S = 2,000mm/s x (Tm + Ts) + 8 x (d - 14mm)
•S = Safety distance (mm)
•Tm = Machine's response time (s)
•Ts = Response time of the F3SJ from ON to OFF (s)
•d = Detection capability of the F3SJ (mm)
[Calculation example]
When Tm = 0.05s, Ts = 0.01s, and d = 20mm:
S=2,000mm/s x (0.05s + 0.01s) + 8 x (20mm - 14mm)
= 168mm . . . Formula (2)
If the result
< 100mm, use S = 100mm.
If the result exceeds 500mm, use the following expression where K = 1,600mm/s.
S=1,600mm/s x (Tm + Ts) + 8 x (d - 14mm) . . . Formula (3)
If the result of this formula (3)
< 500mm, use S = 500mm.
Hazard
Safety distance (S)
Courtesy of CMA/Flodyne/Hydradyne ▪ Motion Control ▪ Hydraulic ▪ Pneumatic ▪ Electrical ▪ Mechanical ▪ (800) 426-5480 ▪ www.cmafh.com

Omron F3SJ-A series Specifications

General

Brand	Omron
Model	F3SJ-A series
Category	Accessories
Language	English