
Installation manual
HB-37420-810-01-25F-EN SMX100 Installation manual.docx
Page 247 of 260
Version: 25F
Calculation acc. to EN ISO 13849-1:
Channel A
– shut-down via mains contactor:
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%
Mains
contactor
B10d = 20 * 106
Nop = 20/AT = 3990/year (309 AT/year)
MTTFD
=
B10d
0,1 ∗
Nop
= 32.362,46 years
𝟑𝟐. 𝟑𝟔𝟐 𝐲𝐞𝐚𝐫𝐬
DCPES = 60%
MTTFD_A
=
1
1
MTTFD_Türz
+
1
MTTFD_SinCos
+
1
MTTFD_PES
+
1
MTTFD_Netzsch
= 23,29 years
𝟐𝟑 𝐲𝐞𝐚𝐫𝐬