Festo CPV..-DI01 series Electronic Manual page 50

1. Installation
1−36
Please note
Always connect the earth potential to pin 4 of the power
·
supply connection.
Connect the earth connection of the end plate with low
·
impedance (short cable with large cross−sectional area)
to the earth potential.
With low−impedance connections you can ensure that
·
the housing of the valve terminal and the earth connec
tion at pin 4 have the same potential and that there are
no equalizing currents.
In this way, you will avoid interference caused by electro
magnetic influences.
0 V
2 A
24 V
2 A
1 2
1
PE
2
Potential equalization
3
Load voltage can be switched off separately
4
The earth connection at pin 4 is designed for 3 A
Fig. 1/10: Example of connection with PELV power unit and
potential equalization
3 1 2 4
PS
MNS
3 2 4
Festo P.BE−CP−DI01−EN en 0503d