Channel−Specific Module Parameters Filter Measured Value; Channel−Specific Module Parameters Monitor Of Wire Fracture - Festo CPX-AB Series Electronic Manual

2. Analogue input module CPX−2AE−U−I
2.4.6 Channel−specific module parameters Filter measured value
2.4.7 Channel−specific module parameters Monitor of wire fracture
Festo P.BE−CPX−AX−EN en 0503b
In order to suppress faults, the input data can be filtered digi
tally, whereby the degree of filtering can be set by means of
parametrizing.
Filtering is carried out as follows:
by forming the sum of n values,
by subtracting an average value,
by adding the current input value.
The following applies here: the greater n, the more the signal
will be filtered.
A wire fracture monitoring (open loop) can be activated with
appropriate parametrizing for the signal range 4...20 mA.
The criterion for a wire fracture is software monitoring to
ensure that the value does not drop below the lower limit
(I 2.0 mA). If the value drops below the lower limit, the
IN
module will send an appropriate fault message to the field
bus node .
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