Festo IFB11-03, Electronic Manual

Page: 60 / 214

3. Installation
3−22
Festo P.BE−VIFB11−03−EN en 0503g
Example of connection
The diagram below shows as an example the connection of a
common 24V power supply for pin 1 and pin 2. Please note
here that:
the load voltage supply for the outputs/valves must be
protected with an external fuse of maximum 10A (slow
blowing) against short circuit/overload.
the power supply for the electronics and the inputs
should be protected with an external fuse of 3.15 A
against short circuit/overload (recommendation).
the power supply for the sensors is also protected with
the fuse fitted (2 A).
the common tolerance of 24 V DC 10 % must be ob
served.
both connections are connected for potential equalization
and that equalizing currents are avoided.
the load voltage at pin 2 (valves/electric outputs) can be
switched off separately.