Siemens simovert masterdrives Compendium

12.2010 Configuration and Connection Examples
Siemens AG 6SE7087-6QX70 (Version AM)
SIMOVERT MASTERDRIVES Compendium Motion Control 2-51
The safety function is triggered by the Emergency Stop button with
rotary unlocking mechanism which is connected in two channels. This
has positive opening contacts.
Fault exclusion is assumed in each case for the positive opening
contacts and the mechanical components of the Emergency Stop
button. Accumulation of faults between two consecutive actuations of
the Emergency Stop button can result in loss of the safety function.
This behavior corresponds to Category 3.
Parameter Value Comment
Emergency Stop button –S3
B10 value 100.000 Specified by manufacturer
Share of hazardous
failures
20 % Specified by manufacturer
B10
d
value 500.000
failures hazardous of share
10B
10B
d
=
nop 12 per year Assumed actuations per year
MTTF
d
416,666 years
→ high
op
d
d
n1,0
10B
MTTF
×
=
DC 99 % Plausibility monitoring by –A1
Result
PFH
d
4.29 x 10
-8
/ h EN ISO 13849-1:2008 Appendix K
Performance Level PLe with Category 3
Subsystem
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Siemens simovert masterdrives Specifications

General

Brand	Siemens
Model	simovert masterdrives
Category	DC Drives
Language	English