ABB 07CR41 Operating Manual page 51

Figure 5: Earthing principles for several cabinets: capacitive earthing
Figure 6: Joint earthing for devices which generate noise
Advant Controller AC 31 / Issued: 08.99
Direct earthing at cabinet wall
1 2 3
Master
Earth for cabinet 1
Erde von Schaltschrank 1
Direct earthing at cabinet wall
1 2 3
Vorort-
Remote
unit
Modul
Earth for cabinet 2
Erde von Schaltschrank 2
1: Bus 2
2: Bus 1
3: Sh(ield)
Schalt- Schalt-
Cabinet Cabinet
schrank schrank
1
1 2 3
Vorort-
Remote
unit
Modul
1 2 3
Vorort-
Remote
unit
Modul
Störspannungsquelle Noisy element
M
2
Erdung
4 – 3 Installation
CS31 system bus
Earth
3