Important information
DANGER
D
anger due to reaching around or reaching behind
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
b
Mount the safety laser scanner so that it is impossible to reach around or behind.
b
Take suitable additional measures if necessary.
Minimum distance S
A
ccording to ISO 13855 and ISO 13857, the minimum distance S depends on the:
•
Stopping time of the machine or system. The machine stopping/run-down time
can be obtained from the machine documentation or must be determined by mea‐
surement.
•
Response time of the safety laser scanner
•
Reach or approach speed
•
Resolution of the safety laser scanner
Calculate the minimum distance S using the following formula (see ISO 13855):
•
S = 2,000 × (T
M
+ T
S
) + 8 × (d – 14) [mm]
where
•
S = Minimum distance [mm]
•
T
M
= Stopping time of the machine or system
•
T
S
= Response time of the safety laser scanner
•
d = Resolution of the safety laser scanner [mm]
The reach or approach speed is already included in the formula.
•
If the result is S ≤ 500 mm, use the calculated value as the minimum distance.
•
If the result is S > 500 mm, you may be able to reduce the minimum distance
using the following calculation:
S = 1,600 × (TM + TS) + 8 × (d – 14) [mm]
•
If the new value is S > 500 mm, then use the newly calculated value as the mini‐
mum distance.
•
If the new value is S ≤ 500 mm, then use 500 mm as the minimum distance.
Response time T
S
of t
he safety laser scanner
The response time T
S
depends on the:
•
Basic response time of the safety laser scanner
•
Set multiple sampling
•
Transmission speed to external OSSDs via EFI
Further topics
•
"R
esponse times", page 129
4.3.7 Mobile applications
If the dangerous state is produced by a vehicle (e.g., AGV or fork lift), the hazardous
ar
ea that is produced by the movement of the vehicle is protected by the safety laser
scanner.
PROJECT PLANNING 4
8010948/ZA21/2020-06-18 | SICK O P E R A T I N G I N S T R U C T I O N S | S300
45
Subject to change without notice
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