schmersal PSC1 - Page 190

Installation manual
HB-37420-810-01-25F-EN PSC1-C-100 Installation manual - V2.2.docx Page 190 of 201
Version: 25F
Calculation according to EN ISO 13849-1:
Channel A – shutdown via mains contactor:
Component
MTTFd
[years]
DC
Door locking
B10d = 100000
NOP = 30/working days = 9270/year (309
working days/year)
MTTF
d
=
B10d
0
,
1
∗
Nop
=
108
Jahre
DC
Switch
= 99%
SIN/COS
encoder MTTFd
SinCos
= 30 years DC
Encoder
= 99%
PES
PFHd = 1.4 * 10
-8
MTTF
d
=
1
8760
∗
PFHd
=
8154
Jahre
DC
PES
= 99%
Mains
contactor B10d = 20 * 10
6
NOP = 20/working days = 3990/year (309
working days/year)
MTTF
d
=
B10d
0
,
1
∗
Nop
=
32362
Jahre
DC
PES
= 60%
MTTFd_A
=
1
1
MTTFd_Türz.
+
1
MTTFd_SinCos
+
1
MTTFd_PES
+
1
MTTFd_Netzsch
=
23
Jahre
Channel B – shutdown via STO/converter:
Component MTTFd [years] DC
Door locking
B10d = 100000
Nop = 30/working days = 9270/year (309
working days/year)
MTTFd
=
B10d
0
,
1
∗
Nop
=
108
Jahre
DC
Switch
= 99%
SIN/COS
encoder
MTTFd
SinCos
= 30 years
DC
Encoder
= 99%
PES
PFHd = 1.4 * 10
-8
MTTFd
=
1
8760
∗
PFHd
=
8154
DC
PES
= 99%
STO/
converter
MTTFd
STO
= 150 years
DC
PES
= 90%
MTTFd
_
B
=
1
1
MTTFd
_Türz
+
1
MTTFd
_SinCos
+
1
MTTFd
_PES
+
1
MTTFd
_Netzsch
=
20
Jahre