Commissioning Tips - Festo Compact Performance CP-FB6-E Manual

2. Commissioning

Commissioning tips

If the error message "PF" appears when the operating
voltage is switched on, one of the causes is that the
operating voltage for the valves and electrical outputs is
not switched on (pin 2 of the operating voltage connec-
tion of the valve terminal is without voltage). This is al-
ways the case when the load voltage is not switched on
until after the power-up phase of the controller. Due to
the factory setting of DIL switch element 2, this leads
correctly to an error message.
Recommendation:
In this case, switch off the monitoring of the valve/out-
put voltage and evaluate the undervoltage message via
the diagnostic status register.
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CP FB6-E 9809c