Festo CPX-FVDA-P2 Original Instructions Manual page 55

System overview CPX-FVDA-P2
If the max. load current is exceeded, the output module sends an "Overload" diagnostic message for
the relevant output channel and reacts with a channel or module orientation in a safety-oriented man-
ner corresponding to the mode of operation.
– Make sure that the loads used in the safety circuit are insensitive to test pulses of the cross-circuit
monitoring function.
If necessary, it may be helpful to deactivate the test pulses of the cross-circuit monitoring func-
tion. In this regard, please note the deviating safety characteristic values
(è Tab. 48 Deviating safety characteristic values when test pulses are switched off).
– Only use externally supplied loads if their supply voltage:
– Comes from safely galvanically isolated protective extra-low voltage (PELV)
– Comes from the load voltage supply for valves (U
NOTICE!
If electronic loads are connected to CH1 and CH2, a cross circuit may be detected incorrectly under
certain unfavourable operating conditions.
– Pay particular attention to the maximum values for the following characteristics
(è 8.1 Technical data of the output module CPX-FVDA-P2):
– Line length for external loads
– Permanent current (load current) per output channel
– Permanent current of the unswitched load voltage U
Auxiliary supply connections (0 V, +24 V) are available via the manifold blocks (for CH1 and CH2) or
via the output of the pneumatic interface (for CH2).
Additional technical data (è 8.1 Technical data of the output module CPX-FVDA-P2).
Maximum permissible load inductivity at the output channels CH1 and CH2 (è Fig.37).
NOTICE!
When additional valves are added to a valve terminal, the load current at CH0 ... CH2 increases.
• When operating the valve terminal, make sure that the maximum permissible load current is not
exceeded.
To this end, limit the number of valves that are switched on at the same time.
Otherwise, the respective safety circuit will be switched off for safety reasons.
NOTICE!
When operating the CPX-FVDA-P2 in a pneumatic interface, please note that the maximum total cur-
rent depends on the ambient temperature (è Fig.40).
Festo — CPX-FVDA-P2 — 2018-10b
)
VAL
(auxiliary supply) per output channel
VAL
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