Festo CAMC-G-S3 Manual page 250

A Technical appendix
Combined encoder systems:
Encoder 1: Resolver [X2A] or SIN/COS encoder [X2B]
Encoder 2: Incremental encoder [X10]
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 output
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) 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
250
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
2)
DC "high"
2)
DC "high"