4. Commissioning
4-4
Festo P .BE-MPA-EN en 1108e
4.1.2 Pressure build-up in the overall supply
Warning
If the pressure build-up of the pilot air supply is too slow
or delayed, this may cause the actuators to perform
sudden unexpected movements under the following
conditions:
– when the compressed air is connected via a soft-start
valve (gradual pressure build-up) and
– if there are electric signals (e.g. after EMERGENCY STOP)
This can cause damage to the machine or system and even
injury to persons.
• Operate the valve terminal with an external pilot air
supply (3 ... 8 bar) Branch the pilot air supply before the
soft-start valve (see diagram).
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