Festo Smart cubic CPA-SC Series, Manual

Page: 85 / 136

4. Commissioning
4−5
Festo P.BE−CPASC−EN en 0412b
Warning
If the build up of auxiliary pilot air is too slow or delayed,
this may lead to sudden unexpected movements of the
actuators under the following conditions:
when the compressed air is switched on via a safety
start−up valve (slow build−up of pressure) and
when there are electric signals (e.g. after EMERGENCY
STOP).
This may cause damage to the machine or system and
even injury to human beings.
·
Operate the valve terminal with external pilot air, as a
factor of the operating pressure (see appendix A Dia
gram: pilot pressure as a factor of the operating pres
sure"). Branch the pilot air in front of the safety start−up
valve (see figure).