Festo CAMC-G-S3 Manual page 254

A Technical appendix
Combined encoder systems:
Encoder 1: Resolver [X2A] or incremental encoder [X10],
Encoder 2: Other encoder [X2B] (analysis via basic unit)
Error acceptance
Short circuit between any two
conductors of the connecting
cable
Interruption of any conductor of
the connecting cable
Static "0" or "1" signal at the in­
puts and outputs, individually or
simultaneously at multiple in­
puts/outputs
Interruption of high-impedance
status on a single input/output
or multiple inputs/outputs sim­
ultaneously
Reduction or increase of the out­
put amplitude
Interference vibration on one or
more outputs
Change of phase shift between
output signals
Fastening becomes loose when
idling:
– Sensor housing separates
from motor housing
– Sensor shaft separates from
motor shaft
Mounting comes loose during
movement:
– Sensor housing separates
from motor housing
– Sensor shaft separates from
motor shaft
Measuring element is coming
loose (e.g. optical encoding disc)
1) Sensitivity and DC in accordance with the parameterised fault limits; specification applies to factory setting
2) Limitation through DCAV of the module through DC of the basic unit
254
Fault Error detection by the
exclusion safety module
None Individual signal monitor­
ing and vector length mon­
1)
itoring
Cross-comparison of the
position data
(Encoder 1 - encoder 2)
Not Cross-comparison of the
required. position data
(Encoder 1 - encoder 2)
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Supplementary notes/
comments
DC 1 x "high"
(safety module)
+ 1 x "low"
2)
(basic unit)
DC 1 x "high"
(safety module)
+ 1 x "low"
2)
(basic unit)