Festo Smart cubic CPA-SC Series, Manual

Page: 84 / 136

4. Commissioning
4−4
Festo P.BE−CPASC−EN en 0412b
4.1 General instructions
4.1.1 Before commissioning
·
Switch off the power supply before connecting or discon
necting plugs (this will prevent functional damage).
·
Commission only a valve terminal which is fitted and
wired completely.
·
Make sure there is a sufficient supply of fresh air (cooling)
for the following operating conditions:
when the maximum number of valves is fitted
when the maximum operating voltage is applied
when the solenoid coils are constantly stressed.
·
Note the following instructions on building up the
complete pressure supply.
4.1.2 Pressure build−up of the complete supply
Warning
If the pressure build−up of the control air is too slow or is
delayed, the reduction of the holding current may prevent
the pilot solenoids from switching the valves.
·
Make sure that when the pilot solenoids are energized,
the pilot air is applied during the high−current phase of
20 ms in accordance with the external pilot air dia
gram" (see appendix A).