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

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4. Analogue input module CPX−4AE−T
4−26
Festo P.BE−CPX−AX−EN en 0503b
4.4.4 Monitoring wire fracture/short circuit
With appropriate parametrizing, a wire fracture (open loop)
and short−circuit monitoring can be activated (see Tab.4/10).
4.4.5 Limit value monitoring by parametrizing
With the channel−specific parameters Definition limit value"
(parameters 15 ... 22) you can define a limit value for each
channel. With the parameter Limit value monitoring" (para
meter 8), you can define whether a diagnostic message is to
be displayed when the limit value is exceeded or not reached.
No te
If you are using a different temperature sensor from the
Pt100: Set the sensor used with the parametrizing.
Monitoring of the sensor temperature range functions
correctly as follows:
P a r amet r i z in g t h e l imit
v a l ue m o nit or in g
1)
S et l imit v a l ue
2)
is n o t r eac h e d
S et l imit v a l ue
2)
is e x cee d e d
S ens or
tem p e r atu r e r an g e
No diagnosis" No message No message No message
Message if limit value is
not reached" Diagnostic message
fault no. 9 No message Diagnostic message
If limit value is not
reached 9
Message if limit value is
exceeded" No message Diagnostic message
fault no. 10
reached 9
If limit value is
exceeded 10
1)
See Tab.4/11
2)
See Tab.4/15
Tab.4/17: Effect of limit value monitoring on the diagnostic messages