Festo CPA VI Series, Manual

Page: 66 / 110

The following conditions should be fulfilled in order that
the desired pneumatic status as listed can be achieved:
Desired pneumatic
operating status Condition Remarks
Leak free – carefully laid tubing
– regulated auxiliary pilot air —
Fast to react Sufficient pressure supply
via pressure supply modules
•
Exhaust CPA valve
terminal at left
and right hand end
plates (3/5)
Faultless Non-return valves in
common exhaust line Applies in the case of several
systems with centrally
ducted exhaust
Two or more
pressure zones Limitation of pressure
zones by isolation plate Can be fitted at
a later stage
Vacuum/
low pressure operation Separately supplied
regulated auxiliary pilot air
(3-8 bar) Controller can only be
operated with pressure
(3 to 8 bar).
Vacuum/low pressure
operation not with
3/2-way valves
EMERGENCY STOP of
pressure zones Controller function of
auxiliary pilot air must be
guaranteed in spite of
complete supply being
switched off Controller regulates the
auxiliary pilot air of all
valve plates of a CP(A)
valve terminal
Slow start-up after
EMERGENCY STOP If control signals are present
auxiliary pilot air must be
applied at full pressure
immediately after start-up.
4. Commissioning
4-12
CPA... 9808A