Fault Treatment - Festo CPV-D102 Elektronics Manual

3. Diagnosis CPV−DI02 (PROFIBUS−DP)
3.3

Fault treatment

3−20
With the following faults, the reaction of the CPI system
depends on the configured reaction of the master module:
telegram failure
master stop
interruption in the bus cable.
Depending on the setting or configuration, all the outputs
(valves and electric outputs) will be switched off or retain
their status.
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.
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).
Festo P.BE−CPV−DI02−E N en 0704NH