Operating States Of The Pneumatic System - Festo MPA-L Series Description

4. Commissioning

4.4.3 Operating states of the pneumatic system

Desired pneumatic
operating status
Zero leakage
Fast reaction
Trouble−free
Two or more pressure
zones
Vacuum or low−pres
sure operation
EMERGENCY STOP of
pressure zones
Slow start−up after
EMERGENCY STOP
Tab. 4/7: Pneumatic operating states
Festo P.BE−MPAL−EN en 1008NH
The following conditions should be fulfilled, in order that
the desired pneumatic operating states listed below can be
achieved:
Requirement
Tubing connected with care
Regulated pilot air supply
Sufficient pressure supply by means
of pressure supply modules
Non−return valves in common ex
haust line
Limiting the pressure zones by
means of separating seals with
blocked channels
Appropriate number of pneu
matic air supply plates for
supplying the different pressure
zones.
Externally supplied regulated pilot
air supply (3 ... 8 bar)
Guaranteeing the controller function
for the pilot air supply despite the
overall supply being switched off
If control signals are present, the pi
lot air supply must have a pressure
of 3 ... 8 bar immediately after being
switched on
Description
Exhaust the valve terminal MPA−L
via all the exhaust plates or via the
flat plate silencer
This applies when several systems
with centrally ducted exhaust air are
used
Subsequent conversion possible
(see Chapter 5)
Vacuum/low−pressure operation not
with 3/2−way valves
The controller regulates the pilot air
supply to all the valve plates on a
valve terminal MPA−L
4−15