Festo CPX-4AE-4AA-H Operating Instructions Manual page 30

Commissioning
Channel parameter: monitoring of channel 0 ... 3
Description Monitoring of the individual channels of the analogue module for the following
errors:
– lower and upper critical limit
– wire break (idling)
– overflow/underflow
– Parameterisation error for the lower and upper critical limit
The monitoring of the errors can be individually activated or deactivated. Active
monitoring has the following effect:
– Error message at the CPX bus nodes
– The error LED lights è 8.3 LED display.
Monitoring of lower and upper critical limit
– Error message when the lower critical limit is undershot è Tab. 20 Descrip-
– Error message when the upper critical limit is exceeded è Further informa-
Monitoring of wire break (idling)
– Effective for signal range 4 ... 20 mA (with and without HART)
– Range of values for wire break detection at inputs è 7.5 Data format and
– The wire break detection at outputs is effective only if the current value
Monitoring of overflow/underflow
Error message when the range of values is left è 7.5 Data format and range of
values of the actual values.
Monitoring of parameterisation errors
Prerequisites for the monitoring of channel-specific parameterisation:
– The "Monitoring of parameterisation errors" module parameter is active
– The "Monitoring of parameterisation errors" channel parameter is active.
30
tion of "Lower critical limit of channel 0 ... 3".
tion.
range of values of the actual values.
output amounts to at least 1 mA.
è Further information.
Festo — CPX-4AE-4AA-H — 2021-06b