SICK nanoScan3

Further topics
•
"C
onfiguration", page 59
•
"Troubleshooting", page 108
4.4.4 Control inputs
Overview
T
he safety laser scanner can receive signals for monitoring case switching via the
network:
•
Depending on the assembly used, the monitoring case is switched in different
ways, see "Assemblies", page 48.
Prerequisites
•
T
he safety-related parts of the control which switch the active protective field
provide the same safety level as the safety function. In many cases, this is PLd as
per ISO13849-1 or SIL2 as per IEC62061.
4.4.4.1 Static control inputs
Overview
T
he static control inputs support the following evaluation methods:
•
Complementary evaluation
•
1-out-of-n evaluation (only devices with several static control inputs)
Complementary evaluation
A s
tatic control input consists of 2 channels in the case of complementary sampling.
The channels of a static control input are switched inversely. The following table shows
which status the static control input’s channels must have to define logical input
condition 1 and 0 at the relevant control input.
Table 3: Status of the channels of the control inputs with complementary evaluation
A1 A2 Logical input status (input A)
1 0 0
0 1 1
1 1 Error
0 0 Error
1-of-n evaluation
W
ith the 1-out-of-n evaluation, each channel of a control input is considered individu‐
ally. At any time, exactly one channel must have logic value 1.
Table 4: True vales with 1-off-n-evaluation with 2 input pairs (example)
A1 A2 B1 B2 Result (e.g. monitoring case no.)
1 0 0 0 1
0 1 0 0 2
0 0 1 0 3
0 0 0 1 4
Other input conditions Error
Further topics
•
"Se
ttings for monitoring case tables", page 81
•
"Configure switching sequence", page 82
4 P
ROJECT PLANNING
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O P E R A T I N G I N S T R U C T I O N S | nanoScan3 – EtherNet/IP™ 8027909/2023-02-22 | SICK
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