Safety Function In Accordance With En Iso 13849 - Festo MS6-SV D-10V24 Series Instructions Manual

Product overview
Sequence Activity
Optional, when using a third proximity switch S3
3. Record edge change at proximity switch S3. S3 = 0
Corresponding reaction times
Diagnostics in normal position
Pay attention to forced switch on/off
1. Apply voltage to pilot valve V1.
2. Record edge change at proximity switch S1. S1 = 1
3. Switch off voltage to pilot valve V1.
4. Record edge change at proximity switch S1. S1 = 0
5. Apply voltage to pilot valve V2.
6. Record edge change at proximity switch S2. S2 = 1
7. Switch off voltage to pilot valve V2.
8. Record edge change at proximity switch S2. S2 = 0
Corresponding reaction times
Tab. 6 Recommendation for activation and diagnostics
5.3

Safety function in accordance with EN ISO 13849

The product achieves a performance level for the following safety functions:
– Safe venting
– Protection against unexpected start-up (pressurisation) after EN 1037
NOTICE!
Failure of the safety function.
Common cause failures (CCF) cause the failure of the safety function, since in this case both channels
in a two-channel system fail simultaneously.
If measures to control the CCFs are not observed, the safety function of the soft-start/quick exhaust
valve can be impaired.
• Make sure that the described measures are observed
è Failures due to a common cause (Common Cause Failure – CCF).
è 14.4 Safety engineering characteristics
NOTICE!
Failure of the safety function.
Non-compliance with the technical data can lead to loss of the safety function.
• Observe the technical data è 14 Technical data.
12
Fig.3.
è
14.4 Safety engineering characteristics.
è
Fig.3.
è
Status and status transitions
1
è
V1 = 1
0
è
V1 = 0
1
è
V2 = 1
0
è
V2 = 0
1
è
Festo — MS6-SV-...-D-10V24 — 2019-05b