Page 37 - trends in automation 1.2013
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He can then prepare possible solutions
even before he is contacted by the
control centre of the Abwasserverband.
Early detection of malfunctions
The heart of the pneumatic complete
solution is an electrical terminal type CPX
combined with an ISO valve terminal
type VTSA. The high-performance system
resolves control problems directly on
site and supports comprehensive remote
diagnostics. Modules for temperature
measurement, pressure regulators or even
pressure sensors can be added on, and the
signals can be processed via the CPX
terminal. A data logger also continuously
documents the charge status of the
accumulators as well as recording the
charging behaviour. The compressed
air production times are also monitored
and the data is transmitted to the waste-
water control centre. Leaks, problems
with the power supply and other issues
can thus be detected and rectified at
an early stage.
Energy self-sufficient automation:
Solar panels
on the roof of the pilot installation supply
power to the control system of the stormwater
retention tanks.
Monitored system:
The electrical terminal
CPX-VTSA is linked to the wastewater control
centre and the responsible employee at Festo
via GSM modem.
Sturdy, corrosion-resistant and suitable for
the ATEX zone:
Pneumatic linear actuators DLP
ensure reliable actuation of the exhaust flow
control valves even at sub-zero temperatures.
The exhaust flow control valves, which
used to be actuated electrically with a
spindle rod, are now moved by pneumatic
linear actuators type DLP. They are ideally
suited to outdoor use. Robust and corro-
sion-resistant, the DLP are perfect for
use with water technology and can also
be used in an ATEX zone. With working
pressures of between 5 and 7 bar, which
can be increased briefly if required, they
can release gate valves even if they are
stuck. This makes the everyday work of
the maintenance staff of the Abwasserver-
band Weißach und Oberes Saalbachtal
much easier.
Ready for the rain
Following completion of the test phase,
the energy self-sufficient complete solu-
tion from Festo will be implemented in
other stormwater retention tanks of the
Abwasserverband. The advantages are
obvious: greater reliability and reduced
effort thanks to reliable technology, self-
sufficient power supply as well as central
control and monitoring. The excellent
infrastructure of the Abwasserverband
Weißach und Oberes Saalbachtal is
now well equipped even for unexpectedly
heavy rainfall.
1.2013
trends in automation
Synergies
36
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37
