Festo CAMC-G-S3 Manual page 244

A Technical appendix
Error acceptance
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)
No light from transmitter diode
Additional requirements for rotary encoders with sin/cos output signals, analogue signal
generation
Static signal at the inputs and
outputs, individually or on mul­
tiple signals, amplitude in the
range of the power supply
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
244
Fault Error detection by the
exclusion safety module
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Individual signal monitor­
ing and vector length mon­
1)
itoring
Required! Not possible safely.
According However, monitoring of
to manu­ the period of the SOS re­
facturer's quest occurs:
datasheet A switch-off and error
for the en­ message occur after
coder 24 hrs.
None Individual signal monitor­
ing and vector length mon­
1)
itoring
None Individual signal monitor­
ing and vector length mon­
1)
itoring
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Supplementary notes/
comments
In accordance with sec­
tion A.3;
2)
DC > 90%
When a signal oscil­
lates, maximum motor
movement in the toler­
ance window of the
amplitude monitoring
In accordance with sec­
tion A.3;
2)
DC > 90%
e.g. through a soiled
code disc
Use fault exclusion for
the motor - encoder
system, or a second
measuring system for
position comparison.
In accordance with sec­
tion A.3;
2)
DC > 90%
In accordance with sec­
tion A.3;
2)
DC > 90%