Festo CPX DE Series Manual page 129

4. Input modules
Channel− Sequence
related fault
LED (red)
ON
OFF
LED is out
ON
OFF
LED lights up
Tab. 4/35: Channel−related fault LEDs input module 8DE−D
Festo P.BE−CPX−EA−EN en 05602d
Channel−related fault LEDs (only CPX−8DE−D)
There is a red fault LED for each input. This indicates a fault
at the input due to short circuit or overload irrespective of the
parametrization.
Status
Input without short circuit/overload,
faultless operation
Fault short circuit/overload
Short circuit/overload in sensor
supply 24 V
SENx...
Please note
If there is a short circuit, the sensor supplies of module
CPX−8DE−D will be switched off channel−by−channel.
Exception with sub−bases AB−4−M12x2−5POL(−R) and
AB−4−HARX2−4POL:
The sensor supplies are grouped together in pairs on
these sub−bases. The following are switched off
together: Ix and Ix+1, Ix+2 and Ix+3, ...
The diagnostic messages are therefore only for the
inputs Ix, Ix+2, Ix+4 and Ix+6. The inputs Ix+1, Ix+3, Ix+5
and Ix+7 do not generate a diagnostic message.
Fault Fault
number treatment
0 None
2 See section
4.5.1, Tab. 4/32
4−37