Honeywell SYA14 Series Manual page 30

3.3.2 US ANSI standard
SYA14
Normal approach
S ≥ 63 (t1+t2) + 0.94 S ≥ 63 (t1+t2) + 3.08 S ≥ 63 (t1+t2) + 33.46
S
With:
S minimum safety distance (in inch, 1 in. = 25,4 mm)
t1 light curtain response time (in sec.)
t2 machine stopping time (in sec.)
IMPROPER SAFETY DISTANCE
• Calculate safety distance using formula S > V (t
− S is the safety distance from the light curtain sensing field to the danger zone (OSHA
29 CFR 1910.217 (c) (3) (iii) (e)
− V is the velocity of movement into the danger zone; the OSHA hand speed constant is
63 in. per second; see local health and safety regulations for current value
− t
is the response time of the FF-SYA light curtain
1
− t
is the stopping time of the equipment guarded by the light curtain including
2
interconnecting components such as all mechanical, electromechanical, and electronic
parts such as relays, solenoids, and brakes
− C is additional safety distance
• Obtain C, the additional safety distance from local safety agency.
Failure to comply with these instructions could result in death or serious injury.
30
SYA30 SYA60
+t ) + C where,
1 2
107031-23 EN FR26 GLO 1199 Printed in France