A Technical appendix
36 Festo – GDCP-CMMS-AS-G2-S1-EN – 1306NH – English
A Technical appendix
A.1 Technical data
A.1.1 Safety engineering
Safety data
Safety function STO Safe restart interlock (STO, Safe Torque Off ) in accordance
with EN ISO 13849-1
Category 3 Grading in c ategories in accordance with EN IS O 13849-1
Performance level PL d Performance level in ac cordance with EN ISO 13849-1
T [Years] 20 Proof test interval
Operating life in accordance with EN ISO 13849-1
Maximum proof test interval; depending on switching
frequency, considerably shorter proof test inter vals may be
required. Please take into account the maximum service life
of the relay contact Tab. A . 6.
MTTFd [Years] 528 Mean time to dangerous failure.
Tab. A.1 Technical data: safety data
Due to the service life of the internal switching relay ( Tab. A.6), the safety data for the
STO function apply for an annual actuation rate of:
– Rev. 01: n
op
= 5000 / a
– Rev. 02: n
op
= 500000 / a
Safety information
Type test The functional safety engineering of the product has been
certified by an independent testing authority in accordance
with Section 1.1.4, see certificate www.festo.com
Cer tificate issuing authority MFS 09030
Proven component yes, for the STO safety function
Tab. A.2 Technical data: safety information
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