Fault Treatment - Festo CPX-FB32 Electronic Manual

3. Diagnosis
3.6

Fault treatment

Festo P.BE−CPX−FB32−E N en 0605NH
With the following faults, the reaction of the CPX terminal
depends on the configured reaction of the master module
and on the parameterised Fail safe setting:
telegram failure
master has stopped
interruption in the bus cable.
Depending on the parametrizing, the outputs (valves and
electric outputs) will be switched off (factory setting),
switched on or retain their status (see CPX system manual).
Warning
Make sure that valves and outputs are put into a safe
·
state if the faults named occur.
An incorrect status of the valves and outputs can lead to
dangerous situations.
Please note
Please note the following if the outputs are reset after PLC
stop, field bus interruption or fault:
Single−solenoid valves move to the basic position.
Double−solenoid valves remain in the current position.
Mid−position valves move to the mid−position (depend
ing on valve type: pressurized, exhausted or blocked).
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