Festo PROFIBUD-DP, Elektronics Manual

Page: 46 / 154

1. Installation CPV−DI02 and CPV−CS02
1−32
Festo P.BE−CPV−DI02−EN en 0704NH
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.
·
By means of low−impedance connections, make sure
that the housing of the valve terminal and the earth con
nection 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.
1 2 4 3 2
24 V
0 V
P S
MN S
3 1 2 4
2 A
2 A
1
PE
2
Potential equalization
3
Load voltage can be switched off separately
4
Earth connection at pin 4 designed for 3 A
Fig.1/10: Example of connection with PELV power supply
unit and potential equalization