Festo VTSA Series, Руководство пользователя

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4. Commissioning
4−16
Festo P.BE−VTSA−44−EN en 0601a
4.5.2 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 Remarks
Free of leakage Tubing connected with care
Regulated pilot air
Fast reaction Sufficient pressure supply via
pneumatic supply plates or vertical
supply plates
·
Exhaust the VTSA valve terminal
via all the exhaust plates or the
exhaust cover
Faultless 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 sheet seals with separate
channels subsequent conversion possible
(seechapter 5)
Vacuum or
low−pressure
operation Regulated external pilot air (pressure
range see appendix A, Tab.A/4) Note the conditions for operating the
valve terminal with vacuum or
low−pressure in the chapter 3.3.8
Vacuum/low−pressure operation.
EMERGENCY STOP of
pressure zones Guarantees the functioning of the
pressure regulator for the pilot air
despite the complete supply being
switched off The regulator regulates the pilot air
of all the valve plates on a valve
terminal
Slow start−up after
EMERGENCY STOP If control signals are present, the
pilot air must be applied immediately
after being switched on with at least
the minumum pressure specified in
appendix A, Tab.A/4.
Tab.4/8: Pneumatic operating states