11 connection possibilities of the sensors (pl), 6 safety manual – JUMO 701150 14597 safetyM STB/STW - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual User Manual
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6 Safety Manual
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6.11 Connection possibilities of the sensors (PL)
The JUMO safetyM STB/STW 701150 evaluation device structure is basically identical.
Various possibilities to connect the sensors are available. These possibilities are listed in the following table along with the
achievable PL level:
SRESW
Safety-Related Embedded Software
4.6.2
SRP
Safety-Related Part
General
SRP/CS
S
afety-Related Part of (a) Control System(s)
3.1.1
Sub-PL/Sub-SIL
PL or SIL at subsystem level. A subsystem a system that – based on a subtask –
already adequately performs a safety function (for example, an input module that
reliably records the inputs).
TE
Test facilities
6.2
T
M
Functional life
3.1.28
T
M
Functional life, designated Mission Time
T
10d
-
value
Reference value for a preventative exchange (10 % of the B10d value). At this val-
ue, a dangerous failure has already occurred for approx. 63 % of all components.
In this case, the standard DIN EN ISO 13849-1:12006 recommends replacement.
Formula symbol or
abbreviation
Description
Definition
or location