Festo 530411, Manual

Page: 130 / 218

4. Commissioning
4-22
Festo P.BE-MPA-EN en 1108e
4.7.2 Operating states of the pneumatic system
The following conditions should be fulfilled, in order that the
desired pneumatic operating states listed below can be
achieved:
Desired
pneumatic
operating status Prerequisites Comment
Zero-leakage – Tubing connected with care
– Regulated pilot air supply —
Fast reaction Sufficient pressure supply by means
of pressure supply modules Exhaust the MPA-S valve terminal via
all exhaust plates or flat plate
silencer
Trouble-free Non-return valves in common
exhaust line This applies when several systems
with centrally ducted exhaust are
used
Two or more
pressure zones – Limiting the pressure zones by
means of isolating seals with
blocked channels
– Appropriate number of pneumatic
air supply plates for supplying the
different pressure zones.
Subsequent conversion possible
(see Chapter 5)
Vacuum or
low-pressure
operation Externally supplied regulated pilot
air supply (3 … 8 bar) Vacuum/Low pressure operation not
with 2x2/2- and 2x3/2-way valves
(Ident. code D, I, H, K, N)
EMERGENCY STOP of
pressure zones Guaranteeing the controller function
for the pilot air supply despite the
overall supply being switched off The controller regulates the pilot air
supply to all the valve plates on an
MPA-S valve terminal
Slow start-up after
EMERGENCY STOP If control signals are present, the
pilot air supply must have a pressure
of 3 ... 8 bar immediately after being
switched on
Tab. 4/11: Pneumatic operating states