A.2 Safety Data - Festo CAMC-G-S3 Manual

A Technical appendix
A.2 Safety data
A.2.1 Safety functions
Assignment of safety function – Classification
Tab. A.16 shows the classification of the safety functions according to EN 61800-5-2
Function Cat., PL
STO Cat. 4, PL e
SBC
SS2 Cat. 3, PL d
or
SS1
Cat. 4, PL e
SLS
SSR
SSM
SOS
1) Classification of category and performance level in accordance with EN ISO 13849-1
2) Classification of Safety Integrity Level in accordance with EN 62061
Tab. A.16 Classification of the safety functions and notes
Some of the information on selected, prequalified encoder combinations is available
separately.
Please consult your regional Festo contact as necessary.
For a "safe shaft connection", fault exclusion is achieved using positive-locking and/or
appropriately overdimensioned attachment elements.
Take the whole drive train up to the risk point into account.
If the movement of the motor shaft is monitored solely by a single rotary or linear encoder
with a two-channel structure, then it must have a certificate of a named office according
to the amount of risk reduction.
When using two encoders, the resolution limit for the motion detection for the safety
functions is specified by the encoder with the lower resolution limit.
Position encoders used for idle position monitoring, e.g. SOS, and which present static
output signals when at idle require dynamisation on the user side, i.e. the drive must be
moved once within each 24 hour period.
238
1) 2)
SIL Please note
SIL 3 –
–
SIL 2 The classification is dependent on the combination of
or position encoders used. When a single encoder is used
SIL 3 with SIL classification, a safe shaft connection is re­
quired; depending on the encoder configuration, only
Cat. 3, PL d or SIL 2 is achieved è Section A.2.3,
Tab. A.19, Tab. A.20, Tab. A.21, Tab. A.22 und Tab. A.23.
Note that the accuracy of position detection is limited
è Section A.3.
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English