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Calculated Values of PFD and PFH
Appendix 2
Appendix 2: Calculated Values of PFD and PFH
Calculated values of PFD and PFH of the DST1-series Safety I/O Terminals are given in the following tables.
These values must be calculated for the overall devices within the system to comply with the SIL level required
for application.
A-2-1
Calculated PFD Values
IMPORTANT
The proof test interval of the DST1-MRD08SL-1 must not exceed 0.5 years because the mainte-
nance interval for the relay contacts must not exceed a period of 6 month to satisfy safety cate-
gory 4 in accordance with EN 954-1.
A-2-2
Calculated PFH Values
Model
Proof test interval (years)
PFD
DST1-ID12SL-1
0.25
2.21E-07
0.5
4.39E-07
1
8.76E-07
2
1.76E-06
DST1-MD16SL-1
0.25
2.22E-07
0.5
4.40E-07
1
8.77E-07
2
1.76E-06
DST1-MRD08SL-1
0.25
4.70E-06
0.5
9.54E-06
DST1-XD0808SL-1
0.25
2.22E-07
0.5
4.40E-07
1
8.77E-07
2
1.76E-06
Model
PFH
DST1-ID12SL-1
2.00E-10
DST1-MD16SL-1
2.00E-10
DST1-MRD08SL-1
4.20E-09
DST1-XD0808SL-1
2.00E-10
Содержание DST1-ID12SL-1
Страница 1: ...OPERATION MANUAL Cat No Z904 E1 06 DeviceNet Safety DST1 series Safety I O Terminals...
Страница 2: ......
Страница 3: ...DST1 series Safety I O Terminals Operation Manual Revised June 2011...
Страница 4: ...iv...
Страница 10: ...x...
Страница 14: ...xiv...
Страница 110: ...86 Remote I O Allocations Section 3 2...
Страница 116: ...92 Indicators Section 4 2...
Страница 134: ...110 DST1 XD0808SL 1 Section 5 4...
Страница 146: ...122 Maintenance Section 7 4...
Страница 159: ...135 Logic Terminal Wiring Examples Section 8 3...
Страница 160: ...136 Logic Terminal Wiring Examples Section 8 3...
Страница 178: ...154 Index...
Страница 181: ...157 Revision History...