Pepperl+Fuchs VAA-2E-KE1-S, Оригинальное руководство пользователя

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VAA-2E-KE1-S
Annex A
Example 2:
If a dangerous failure (short circuit) of the switches cannot be excluded, these switches must
be duplicated and connected in series.
Figure 7.3
Example 3:
If a short circuit in the cabling across the switches cannot be excluded, both channels are
needed to achieve a category 3 safety function.
Figure 7.4
The following function blocks can be parameterized to achieve safety category 3 in this applica-
tion during operation of the AS-Interface safety module on a safety monitor (e.g., VAS-1A-K12
or VAS-2A-K12):
Examples 1 and 2:
Dual-channel, independent
Example 3:
Dual-channel, dependent
Dual-channel, force-guided
Channel 1
Channel 2
Module
S+1
S-1
S+2
S-2
S+1
S-1
S+2
S-2
Safety circuit
Module
separately
laid
separately
laid