Festo CP-E08-M8-CL - Page 80

4. Input modules type CP−E16−M...−EL and CP−E32−M8−EL
4−18
Festo P.BE−CPEA−CL−EN en 0711a
LED (red)
group
Operating status Error handling
LED is out
No short circuit/overload in
sensor supply
· None
LED lights up
Only for CP−E16−M8−EL and
CP−E16−M12−EL:
 Short circuit/overload in
sensor supply
(Display group, see Fig.4/2
and Fig.4/3)
1 per four inputs, lights up
when one input per group is
faulty.
· Remove short circuit and, if applicable,
delete error
Tab.4/5: Status LED (display group) short circuit/overload
Reaction to short circuit in the sensor supply
If there is a short circuit, the input module will switch off the
power supply to the sensors and communicate the fault to
the CPI/CP master. The status LEDs will be switched off and
the inputs of the module supply a 0−signal. After the short
circuit or overload has been eliminated, the module must be
separated from the supply voltage in order to reset the short
circuit/overload.