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Installation manual
HB-37420-810-01-25F-EN SMX100 Installation manual.docx
Page 80 of 260
Version: 25F
Safety note:
•
The manufacturer's data (MTTFD, FIT-numbers, etc.) must be used for a safety related
assessment of the partial system "Sensors".
•
The DC-values listed in the table must be used conservatively and compliance with the
boundary conditions (see table under „Remarks“) must be ensured.
•
According to the applicable standards, fault exclusions are permitted. The boundary
conditions mentioned in this context must permanently be met.
•
If several sensor systems are required for the correct function of a single safety
function, their partial values must be correctly merged by following the chosen method.
4.2.1.3 Classification of digital inputs
4.2.1.3.1 Digital inputs I0
1 … I14
Digital inputs
Achievable
performance level
Comment
I0
1 … I04
I0
9 … I14
PL e
Suitable for any kind of input elements, with /
without pulse, achievable PI depending on the
MTTFd of the input element, as well as fault
exclusions in the external wiring.
I0
5 … I08
PL e
Single-channel with pulse:
-
Mainly High level required (T
High
> 100 *
T
Low
)
-
At least one request/day required by
application
-
Fault detection upon request
PL d
Single-channel without pulse:
-
Fault exclusion short-circuit between
signals and to VCC
-
Fault detection upon request
PL e
Dual channel:
-
At least one request/day required by
application
-
Fault detection upon request