•
The set input delay (
).
•
The processing time for the chosen input.
You calculate when to switch between monitoring cases as follows
1.
First calculate how long it takes to switch between monitoring cases:
t
CSR
= t
ID
+ t
I
where:
°
t
CSR
= time required for switching between monitoring cases in milliseconds
(ms)
°
t
ID
=input delay for the control inputs in milliseconds (ms)
°
t
I
= processing time for the selected switching type in milliseconds (ms)
•
I
= 12 ms
2.
Then calculate how much time is available in the response time for switching
between monitoring cases:
t
CSA
= (n – 1) ×t
S
where:
°
t
CSA
= time available for switching between monitoring cases in milliseconds
(ms)
°
n = set multiple sampling (default: n = 2)
°
t
S
= scan cycle time in milliseconds (ms)
3.
Then check whether there is enough time available for switching between monitor‐
ing cases:
°
If t
CSA
≥ t
CSR
: earlier start is not necessary.
°
If t
CSA
< t
CSR
: you must start switching between monitoring cases earlier. The
time advance t
CSP
required is: t
CSP
= t
CSR
– t
CSA
NOTE
In some cases, it is not possible to define when to switch (for example because pro‐
cessing times of the machine vary) or the time advance means that the monitoring of
an area finishes too early. Follow one of the following recommendations in these cases:
b
Allow the two protective fields to partially overlap.
4.4.5
Hazardous area protection
The safety laser scanner is mounted with a horizontal scan plane in a stationary appli‐
cation, for example on a machine where the hazardous area is not completely sur‐
rounded by a physical guard. During hazardous area protection, the safety laser scan‐
ner detects a person’s legs. The protective field is parallel to the person’s direction of
approach.
4
PROJECT PLANNING
34
O P E R A T I N G I N S T R U C T I O N S | outdoorScan3 Core I/O
8023152/160F/2019-11-14 | SICK
Subject to change without notice
