12.2010 Configuration
and Connection Examples
Siemens AG
6SE7087-6QX70 (Version AM)
SIMOVERT MASTERDRIVES
Compendium Motion Control
2-39
♦
Determination of diagnostic coverage
Parameter
Value
Comment
DC(channel1) 99
%
Testing of –K1 via –K3 in feedback circuit of
–A2 every time the protective door is closed
DC(channel2) 90
%
Testing of –K2 and –K3 in feedback circuit of
–A1 on request for Emergency Stop (12x per year)
Faults might accumulate undiscovered between
the requests.
DC
avg
94.5 %
→
average
)
2
channel
(
MTTF
1
)
1
channel
(
MTTF
1
)
2
channel
(
MTTF
DC
)
1
channel
(
MTTF
DC
DC
d
d
d
2
d
1
avg
+
+
=
♦
Determination of Performance Level
•
Structure of SRP/CS according to Category 3
•
MTTF
d
is high
•
DC
avg
is average
•
Sufficient measures against common cause failure
According to EN ISO 13849-1:2008 Appendix K,
PL e is achieved
with PFHd = 4.29 x 10
-8
/ h
.
Содержание simovert masterdrives
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Страница 1466: ...03 2010 Siemens AG 6SE7087 6QX70 Version AL SIMOVERT MASTERDRIVES Compendium Motion Control List of function data set parameters ...
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