4. Commissioning
4-3
Festo P.BE-CPVSC-EN en 0112NH
4.1 General instructions
Before commissioning
• Switch off the power supply before connecting or discon-
necting plugs (otherwise this could lead to functional
damage).
• Commission only a valve terminal which has been fitted
and wired completely.
• Make sure that there is a sufficient supply of fresh air
(cooling) for the following operating conditions:
– when the maximum number of valves are fitted,
– when the maximum operating voltage is applied,
– when the solenoid coil is constantly under stress.
Warning
When pressurizing or re-pressurizing the valve terminal
under the following conditions:
– with the safety start-up valve (slow build up of pressure)
and
– when there are electric signals (e.g. after EMERGENCY
STOP).
• Apply the auxiliary pilot air externally (3 to 7 bar).
Y ou will then prevent the cylinder from extending or
retracting suddenly.
The auxiliary pilot air must be applied with a pressure of 3 to
7 bar immediately after being switched on, otherwise there is
no guarantee that the valve will switch directly (see diagram).
If the pressure is less than 3 bar, there may be a delay before
the valve is switched, in spite of an electric signal being pres-
ent. The slow increase in pressure of the complete supply
does not then affect the cylinder . Depending on the valve
function, the cylinder would extend or retract suddenly.
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