Honeywell SYA14 Series Manual page 31

3.3.2.1 Sample Calculation
(Point-of-operation guarding)
Country: USA
Application: Mechanical/hydraulic power press
Protection: Point-of-operation guarding
Formula: S >V(t +t )+C
1 2
− V = 63 in./sec.
− t
= 14.5 ms (FF-SYA30080C2)
1
− t
= 200 ms (machine stop time; including
2
response time of all interconnecting
components, such as relays, solenoids,
brakes, etc.)
− C = 3.08 in. (ANSI B11.1 and ANSI B11.2)
[FF-SYA30]
S = 63 (0.014 + 0.200) + 3.08 in. = 16.56 in.
3.4 How to Calculate
Reflective Surfaces
REFLECTIVE SURFACES
• To prevent two optical paths to the receiver, install FF-SYA light curtains so there are
no reflective surfaces within the beam angles of the emitter and receiver.
• Calculate reflective minimum distance using formula D= L(tan 2.5°), where
− D is the minimum distance to reflective surface (always greater than 131 mm or 5.16 in)
− L is the installed scanning range
Failure to comply with these instructions could result in death or serious injury.
Reflective surfaces near the sensing field can cause reflection of the sensing beams and
result in two optical paths to the receiver. The light curtain must be installed so there are
no reflective surfaces within the beam angles of the emitter and receiver. Figure 3-2
illustrates the beam angles.
Calculate the reflective minimum distance using the following formula:
D = 131 mm, for scanning distances bewteen 0 and 3 m
D = L x tan 2.5°, for scanning distances greater than 3 m
D = Minimum distance to reflective surface (always greater than 131 mm or 5.16 in.)
L = Installed scanning range
The emitter and receiver must have the same protected height and resolution.
emitter and receiver must be mounted at the same height and aligned with each other.
107031-23 EN FR26 GLO 1199 Printed in France
3.3.2.2 Sample Calculation
(Perimeter guarding)
Country: USA
Application: Robotics
Protection: Perimeter guarding
Formula: S >V(t +t )+C
1 2
− V = 63 in./sec.
− t
= 15 ms (FF-SYA60096C2)
1
− t
= 200 ms (robotics stop time, including
2
response time of all interconnecting
components, such as relays, solenoids,
brakes, etc.)
C = 33.46 in. (USA)
S = 63 (0.015 + 0.200) + 33.46 = 47.00 in.
Minimum Distance Considering
The
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