When switching between monitoring cases, it is possible that a person may already be
in t
he newly activated protective field when switching takes place. In order to ensure
that the person is detected quickly and the dangerous state is brought to an end swiftly,
you can adjust the settings for multiple sampling immediately after switching between
monitoring cases – regardless of any other multiple sampling in place.
•
Fast (1 scan) (default setting): Multiple sampling after monitoring case switching
n
CS
= 1. An object needs to be scanned once before the safety laser scanner
responds. Fastest response and safest behavior of the safety laser scanner.
•
Robust (multiple sampling - 1): Multiple sampling after monitoring case switching n
CS
= n – 1. Multiple sampling after switching between monitoring cases is one scan
fewer than any other multiple sampling in place. This reduces the possibility that
insects, weld sparks, or other particles cause the machine to be switched off.
This increases machine availability. The standard response time applies from the
outset in the new field.
•
User-defined (please consult manual): You can adjust the settings for multiple sampling
after monitoring case switching in line with your requirements on response time
and reliability. Regardless of the exact settings here, multiple sampling after
switching between monitoring cases is always at least one scan fewer than any
other multiple sampling in place: n
CS
≤ n – 1
Multiple sampling after object detection
T
he set multiple sampling also applies by default if a field becomes free again after an
object detection. That means, when the field is free again, the free field is scanned the
same number of times until the safety outputs switch back to the ON state.
If you activate the Activate different multiple sampling rate after object detection option, you
can specify deviating values for the monitoring level or for individual fields. This may
cause the outputs to switch back to the ON state faster or slower after a field has
become free again.
The following case is only relevant if multiple sampling or different multiple sampling
rate after object detection is set to a value n <6: Regardless of whether a different
multiple sampling rate after object detection is set, the multiple sampling after object
detection will in some circumstances be increased to a value up to n = 6. This case
arises if an object detection lasts for a longer period, i.e. if it takes a long time until the
field is clear again.
7.10.2 Parameters for the safety laser scanner
Overview
T
his is where you configure the parameters for the safety laser scanner.
Scan cycle time
Y
ou can configure the scan cycle time. The scan cycle time of the safety laser scanner
affects the response time and the protective field range.
Devices with a max. protective field range of 4.0m and devices with max. protective
field range of 5.5m:
•
40ms: Full protective field range, increased availability in dusty conditions, for
example
•
30ms:Smaller protective field range with shorter response time
Devices with a max. protective field range of 9.0m:
•
50ms: Full protective field range, increased availability in dusty conditions, for
example
•
40ms:Smaller protective field range with shorter response time
CONFIGURATION 7
8025220/1L9Q/2023-08-14 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 – EtherCAT®
101
Subject to change without notice