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Required controller parameter settings:
Code
Value to be set
C105
Depends on the application,
adjust value to safety relay
Function block interconnection in the safety PLC (section):
Saftey-related parameters:
The calculations shown serve as an example of a possible determination of safety-
related characteristic values.
The current suitability status and the characteristic values of the listed components
must be checked by obtaining current manufacturer data on the components
actually used prior to project planning.
Evaluation of the safety characteristics:
Emergency-stop button: B10
13849-1: 100000
It was assumed that the system is used:
250 days / year, 16 hours / day, 2 emergency-stop button operations / day
resultant MTTF
-value: 3000 years (limited to 2500 years)
d
resultant PFH
-value of a category 4-structure according to table K.1 (extended) of EN ISO
d
-10
13849-1: 9.06x10
1 / hour
SMX 11: PFH
-value: 3.00x10
d
SM100: PFH
-value: The SM100 does not contribute to the probability of failure on demand.
d
Therefore, it need not be considered for the calculation.
Result: The PFH
-value of the entire safety circuit is 3.91 x10
d
Doc. ID
200909213
Date
19.07.2019
Comment
QSP time
-value of emergency-stop button according to table C.1 of EN ISO
d
-9
1 / hour
Page 2 out of 5
Doc. version
SM100_SS1_SMX_11_PL_e_en.pdf
-9
1 / hour.
1.3
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