Festo CPA-SC Series, Руководство пользователя

Страница: 64 / 140

3. Installation
3−10
Festo P.BE−CPASC−EN en 0808c
3.3 Connecting the valve terminal / individual location base block
CPA−SC
Warning
Sudden unexpected movements of the connected actua
tors and uncontrolled movements of loose tubing can
cause injury to human beings and/or damage to property.
Before carrying out installation and maintenance work,
switch off the following:
the compressed air supply
the operating and load voltage supplies.
Pay particular attention to the following:
The components of the valve terminal contain electrostatically
sensitive elements. The components will be damaged if you
touch the contact surfaces of the plug connectors, and if you
do not observe the regulations for handling electrostatically
sensitive elements.
On base blocks fitted with reserve plates, seal work connec
tions (2 or 4) with blanking plugs or threaded blanking plugs
to protect them from dirt.
In order to guarantee the optimum efficiency of the CPA−SC
valve terminal, we recommend that the supply air tubing and
the exhaust air tubing be connected on both sides in the
following cases:
when large volume cylinders are operated at high speeds
when several valves are switched simultaneously to the
flow position.
Note
Valves which control large−volume actuators should be
operated in a separate pressure zone.
You will then avoid problems with backpressure in exhaust
channels (3) and (5).