Festo CPX-2AA-U-I, Electronic Manual

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2. Analogue input module CPX−2AE−U−I
2−33
Festo P.BE−CPX−AX−EN en 0503b
2.5.1 Fault messages of the analogue input modules
An analogue input module can register the following faults:
F au l t
num b e r
D esc r i p ti o n F au l t t r eatment
2 F au l t s hor t ci r cuit /ov e rlo a d
1)
Short circuit/overload in sensor supply
(V
EL/SEN
).
(See Parameters" Monitoring the
CPX module monitoring short circuit/
overload at sensor")
1. Eliminate short circuit/overload or
check connected sensors
2. Depending on parametrization (Para
meters Behaviour after short circuit/
overload"):
·
Setting Switch on voltage again":
Power supply for sensors will be
switched on again
aut o matica lly
when short circuit is eliminated.
·
Setting Leave voltage switched off":
Power off/on necessary
or
Modify parameter Behaviour
after short circuit/overload" to
Leave voltage switched off".
3 W i r e fr actu r e at cu rr ent in p ut
1)
Only with voltage inputs with signal range
4...20 mA:
The input currennt I
IN
is less than 2.0 mA.
(See parameter Monitoring channel x
monitoring of wire fracture")
·
Check and, if necessary, replace the
cable and connected sensors.
9 L ess t h an t h e r ate d r an g e
1)
Lower limit exceeded.
(See parameter Lower limit channel x
low byte/high byte" or Monitoring
channel x monitoring below rated
range")
·
Check signal range of input.
·
Check input signal present.
·
Check parametrized limit.
·
If necessary, deactivate monitoring.
1)
The module displays the relevant fault depending on the parametrizing. The analogue input
signals, however, will be processed further.
Tab.2/20: Fault messages of the input modules part 1