Honeywell SYA14 Series, Manual

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17 107022-14 EN FR26 GLO 0100 Printed in Germany
Protection: Normal Approach Point-of-operation guarding using a FF-LS14 safety light curtain (14 mm minimum object
detection)
Application: Small mechanical or hydraulic power press
Formula: D
S
> 2000(t
1
+ t
2
) + C
−
D
S
is the safety distance from the light curtain sensing field to the danger zone.
−
V is the velocity of movement (approach speed) into the danger zone (2000 mm/sec).
−
t
1
is the response time of the FF-LS light curtain (50 ms).
−
t
2
is the stopping time of the equipment guarded by the light curtain including interconnecting components such as all
mechanical, electromechanical, and electronic parts such as relays, solenoids, and brakes (150 mm).
−
C is additional safety distance, C = 8(minimum object detection - 14).
For example, if:
−
V = 2000 mm/sec (pr EN 999).
−
t
1
= 50 ms = 0.050 sec
−
t
2
= 200 ms = 0.200 sec
−
C = 0 mm, 8(minimum object detection - 14), then:
−
D
S
= 2000(0.050 + 0.200) + 0 = 500 mm
3.3.1.2 United States Safety Distance Calculation
The safety distance D
S
(see figure 3-3) allowed between the danger zone and the vertical sensing plane shall be no less
than the value calculated using the following formula:
D
S
≥
63in(t
1
+ t
2
) + C (in) where, D
S
is the safety distance
V is the velocity of movement (approach speed) into the danger zone; (63in/sec)
t
1
is the response time of the FF-LS light curtain (sec)
t
2
is the stopping time of the equipment (sec)
C is additional safety distance C = 3.4(minimum object detection - 0.276) (in)
Figure 3-3 Normal Approach Point-of-operation Guarding
Country: USA (OSHA 29 CFR 1910.217, ANSI B11.19 1990)
Protection: Normal Approach Point-of-operation guarding using a FF-LS14 safety light curtain (14 mm minimum object
detection)
Application: Small mechanical or hydraulic power press
Formula: D
S
> V(t
1
+ t
2
) + C, where,
−
D
S
is the safety distance from the light curtain sensing field to the danger zone.
−
V is the velocity of movement (approach speed) into the danger zone; (63in/sec).
−
t
1
is the response time of the FF-LS light curtain (50 ms).
−
t
2
is the stopping time of the equipment guarded by the light curtain including interconnecting components such as all
mechanical, electromechanical, and electronic parts such as relays, solenoids, and brakes (150 ms).
−
C is additional safety distance (0.93 inch). C = 3.4(minimum object detection - 0.276).
For example, if:
V = 63 in./sec (ANSI B11.1 and ANSI B11.2).
t
1
= 50 ms = 0.050 sec
t
2
= 150 ms = 0.150 sec
C = 0.93 in., then:
D
S
= 63(0.050 + 0.150) + 0.93 = 13.53 in.
D
S