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Installation manual
HB-37420-810-01-25F-EN SMX100 Installation manual.docx
Page 248 of 260
Version: 25F
Channel B
– shut-down via STO/inverter:
Component
MTTFD [years]
DC
Door closer
B10d = 100000
Nop = 30/AT = 9270/year (309 AT/year)
MTTFD
=
B10d
0,1 ∗
Nop
= 𝟗𝟐𝟕𝟎 𝐲𝐞𝐚𝐫𝐬
DCSwitch = 99%
SIN/COS-
encoder
MTTFD_SinCos = 30 years
DCEncoder = 99%
PES
PFH = 1,4 * 10
-8
MTTFD
=
1
8760 ∗
MTTFD
= 107,87 𝑦𝑒𝑎𝑟𝑠
𝟏𝟎𝟖 𝒚𝒆𝒂𝒓𝒔
DCPES = 99%
STO/ inverter
MTTFD_STO = 150 years
DCPES = 90%
MTTFD_A
=
1
1
MTTFD_Türz
+
1
MTTFD_SinCos
+
1
MTTFD_PES
+
1
MTTFD_Netzsch
= 20,25 years
𝟐𝟎 𝐲𝐞𝐚𝐫𝐬
Resulting PI for both channels:
Symmetry of
both channels:
MTTFD
=
2
3
[
MTTFD_A
+
MTTFD_B
−
1
1
MTTFD_A
+
1
MTTFD_B
]
= 21,53 years
𝟐𝟏, 𝟓 𝐲𝐞𝐚𝐫𝐬
DC mean value
MTTFD
=
DCSwitch
MTTFD_Türz
+
DCSinCos
MTTFD_SinCos
+
DCPES
MTTFD_PES
+
DCSchütz
MTTFD_Schütz
+
DCSTO
MTTFD_STO
1
MTTFD_Türz
+
1
MTTFD_SinCos
+
1
MTTFD_PES
+
1
MTTFD_Netzsch
+
1
MTTFD_
STO
= 0,9776
𝟗𝟖%
PL
MTTFD = 21,5 years = average
DC avg = 98 % = average
PL
=“d“ (from EN ISO 13849-1, tables 5,6, and 7)
In this case the B10d value of the door monitoring feature is is determining for PI.
If an even higher safety level is to be reached a correspondingly higher
qualitative switch is to be used.
Note:
The PI can also be determined with the program tool "Sistema" from BGIA.