Festo CDVI-DN Series Electronic Manual page 38

1. Installation
1−26
Connection with electrical isolation of electronics
and load voltage
2
1
0 V
24 V
3
0 V
24 V
2
1
Power unit for load voltage (valves and outputs)
2
Device for isolation monitoring
3
Power unit for operating voltage (electronics and
sensors)
Fig. 1/9: Example of connections for power supply with two
PELV power units
Please note
Electrical isolation will be removed if you loop the voltage
through to further I/O modules without electrical isolation.
3 4 1 2
Festo P.BE−CDVI−DN−EN en 0404NH