Minimum distance S
S
K × (
T
M
+ T
S
) Z
G
+ Z
R
+ C
Figure 29: Minimum distance S
T
he minimum distance S depends on the:
•
Approach speed of the body or parts of the body
•
Stopping time of the machine or system
The machine stopping/run-down time can be obtained from the machine docu‐
mentation or must be determined by measurement.
•
Response time of the safety laser scanner
•
Supplements for general and, possibly, reflection-related measurement errors
•
Supplement to prevent reaching over
•
Height of the scan plane
•
Switching time between monitoring cases, if applicable
Calculate the minimum distance S using the following formula (see ISO 13855):
b
S = (K × (T
M
+ T
S
)) + Z
G
+ Z
R
+ C
where
•
K = Approach speed (1,600 mm/s, defined in ISO 13855)
•
T
M
= Stopping time of the machine or system
•
T
S
= Response time of the safety laser scanner and the downstream controller
•
Z
G
= General supplement = 100 mm
•
Z
R
= Supplement for reflection-related measurement errors
•
C = Supplement to prevent reaching over
Response time T
S
of t
he safety laser scanner
The response time T
S
of the safety laser scanner depends on the:
•
Basic response time of the safety laser scanner
•
Set multiple sampling
•
Transmission speed to external OSSDs via EFI
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
39
Subject to change without notice
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