General Instructions; Before Commissioning; Pressure Build-Up In The Overall Supply - Festo VTSA-44-MP Series Manual

4. Commissioning
4.1

General instructions

4.1.1 Before commissioning

4.1.2 Pressure build-up in the overall supply

4-4
Switch off the power supply before connecting or discon-
•
necting plug connectors (otherwise functional damage).
Only commission a valve terminal that has been mounted
•
and wired completely.
Make sure that there is a sufficient supply of fresh air
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(cooling) for the following operating conditions:
– maximum number of valves
– maximum operating voltage
– when the solenoid coils are constantly under stress
Please observe the following instructions on building up
•
pressure in the overall supply.
Warning
If the build-up of 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 soft-start
valve
– 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 external pilot air
•
corresponding to the pressure specified in Appendix A,
Tab. A/6. The pilot air must be branched in front of the
soft-start valve (see diagram).
Festo P.BE-VTSA-44-EN en 1101f