A
Technical appendix
Festo – GDCP-CMMP-AS-M0-S1-EN – 1412a – English
35
A
Technical appendix
A.1
Technical data
A.1.1
Safety engineering
Safety data
Safety function
STO
–
Safe restart interlock (STO, Safe Torque Off ) as per
EN 61800-5-2 with SIL3
–
Safe restart interlock (STO, Safe Torque Off ) as per
EN ISO 13849-1 with category 4 and PL e
SIL
SIL 3
Safety integrity level as per EN 61800-5-2 / IEC 61508
SIL CL 3
SIL claim limit, for a subsystem as per EN 62061
Category
4
Grading in categories as per EN ISO 13849-1
PM
PL e
Performance level as per EN ISO 13849-1
DCavg
[%]
97
Average diagnostic coverage
HFT
1
Hardware failure tolerance
SFF
[%]
99.2
Safe failure fraction
PFH
1.27x 10
–10
Probability of dangerous failure per hour
PFD
2.54x 10
–5
Probability of dangerous failure on demand
T
[Years] 20
Proof test interval
Operating life per EN ISO 13849-1
MTTFd
[Years] 1370
Mean time to dangerous failure.
Tab. A.1
Technical data: Safety data
Safety information
Product type testing
The functional safety engineering of the product has been
certified by an independent testing body in accordance with
Section 1.1.4, see certificate
è
www.festo.com
Certificate issuing authority
TÜV 01/205/5262.01/14
Proven component
yes, for the STO safety function
Tab. A.2
Technical data: Safety information
