3.2 FIELD BUS NODE
Opening and closing the node
WARNING
Before installation or maintenance work is car-
ried out, the following must be switched off:
•
compressed air supply
•
power supply to the electronic components
(pin 1)
•
power supply to the outputs/valves (pin 2)
You thereby avoid:
• uncontrolled movements of loose tubing
• undesired movements of the connected actu-
ators
• undefined switching states of the electronic
components
CAUTION
The components of the valve terminal contain
elements which are liable to damage by elec-
trostatic charges.
•
Do not therefore touch any contact surfaces
on the side plug connectors of the compo-
nents.
•
Observe the instructions for handling
elements liable to damage by electrostatic
charges.
You thereby avoid destroying the valve terminal
components.
VIFB13 - 03/05 3. Installation
9701 NH 3-7
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