Pilz PSS SB CPU - Page 13

13
Operating Manual: PSS SB ACTIVE JUNCTION BASIS
Fig. 7: Earthing
Legend, Fig. 8:
➀ Cable screening
➁ Galvanic isolation
➂ Base unit PSS SB ACTIVE JUNCTION BASIS
➃ Field device
➄ Screen bar/earth bar
Functional earth
X0
X3 X4
X5
X1 X2
MD
LD
I/OD
I/OD
I/OD
2
3
sub branch (1) sub branch (2)
X0
X3 X4
X5
X1 X2
2
3
main branch
4
4
4
4
24 V
0 V
5
24 V
0 V
sub branch (1) sub branch (2)