Festo CAMC-G-S3 Manual page 248

A Technical appendix
Error acceptance
Supplementary requirements for resolvers with signal processing / reference generator
Crosstalk on the reference
frequency
– central timer fails
– no Conversion Start for ana­
logue-digital converter
– Sample & Hold occurs at the
wrong time
Analogue-digital converter
generates incorrect values
Analogue-digital converter does
not generate any values
Reference generator does not
supply any frequency
Reference generator supplies an
incorrect frequency
Reference generator does not
supply a periodic reference
signal
Amplification error during signal
processing (reference, sin, cos
signal), oscillation
Magnetic interference at the
installation location
Further requirements for the analysis of SIL position encoders
Supply voltage monitoring of the
encoder
1) DC = 60% applies to factory setting, DC = 90% for restricted tolerances of the vector length monitoring è Appendix A.3
248
Fault Error detection by the
exclusion safety module
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Failure monitoring of the
SYNC signal
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Failure monitoring of the
SYNC signal
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Individual signal monitor­
ing and vector length mon­
1)
itoring
Sufficient Individual signal monitor­
screening ing and vector length mon­
1)
for the in­ itoring
stallation
location
None Indirect monitoring of the
resolver via vector length
monitoring
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Supplementary notes/
comments
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)
Error is reliably
detected (DC of the
AV
safety module)