Explanation On Function Summary - Festo VIFB-02 Series Manual

VIFB8 – 02
9706
3. Technical description
Explanation of the function summary
The RIO node controls the following functions:
•
The connection of the valve terminal/valve
sensor terminal to the A-B RIO scanner of the
programmable controller and to further RIO
slaves via the RIO interface.
•
The control of data transfer to/from the RIO
scanner.
•
The internal control of the valve terminal/val-
ve sensor terminal.
The valve coupling unit of the valve terminal
contains the operating voltage connection and
a decoder. This decodes the signals from the
RIO node and transmits the pulses to the valves.
The valve-sensor coupling unit of the valve
sensor terminal contains the operating voltage
connection and a decoder. This decodes the
signals from the RIO node and transmits the
pulses to the valves. The electrical inputs for
valve position sensors, as well as two additional
outputs are also situated here.
The valves control the flow of air to the actua-
tors.
The valves are supplied with compressed air via
the common channels of the connection block.
The exhaust and pilot exhaust from the valves
are also ventilated via these channels.
The connection block is connected to the com-
mon cables of the pneumatic system via the
pneumatic interfaces.
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