Festo CTEU-PB Electronics Description page 78

2. Commissioning
2.9 Switching on
2.9.1 Information concerning the switch-on behaviour of the bus node
2-42
This chapter includes fundamental instructions for commis-
sioning the bus node.
Detailed instructions and further information can be found in
the documentation or online help for the controller or control
program that you use.
Warning
Danger of injury through uncontrolled movements of con-
nected equipment.
Make sure that electrical and pneumatic equipment are in
a de-energised and pressureless status.
Before working on the pneumatics:
Switch off the compressed air supply
•
Vent the valve terminal
•
Before working on the electrical components, e.g. before
installation or maintenance work:
Switch off power supply
•
In this way, you can avoid:
– uncontrolled movements of loose tubing
– accidental and uncontrolled movements of the connec-
ted actuators
– undefined switching states of the electronics
Festo P.BE-CTEU-PB-OP+MAINT-EN en 1208NH English