Festo CAMC-G-S3 Manual page 246

A Technical appendix
Error acceptance
Further requirements for the analysis of SIL position encoders
Supply voltage monitoring of the
encoder
Compliance with the operating
and ambient conditions spe­
cified for the encoder
1) Sensitivity and DC in accordance with the parameterised fault limits; specification applies to factory setting
2) Position information is "static" if there is a fault => Fixed commutating position, motor at idle / voltage of a channel static
=> Commutating position changes by max +/-90° of a signal period of an encoder, motor only moves in this range
Tab. A.20 SIN/COS encoder, Hiperface encoder
Classification of the safety mode in conjunction with the SIN/COS encoder, Hiperface
encoder:
Detection of encoder fault:
Classification in accordance with
EN 61800-5-2 / EN ISO 13849-1:
246
Fault Error detection by the
exclusion safety module
None Not present.
This must be ensured at
the encoder
None Not present.
This must be ensured at
the encoder
DC > 90%
SIL2 / cat. 3 / PL d (safe positioning, incl. at rest)
and
SIL3 / cat. 3 / PL e (safe speed and acceleration)
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Supplementary notes/
comments
The basic unit contains
regulation of the power
supply for the encoder.
In the case of error
(overvoltage, over-cur­
rent), the encoder sup­
ply can be switched off
functionally
The basic unit has an in­
put for monitoring the
motor temperature. In
the case of error, the
drive can be switched
off functionally