ABB AC 900F - Equipotential Bonding

Section 6 Wiring Equipotential bonding
M&I – AC 900F Controller 87
Equipotential bonding
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Item No. Description
1 Power supply unit for the CPU module *)
2 Fuse for the CPU module
3 Power supply unit for the I/O modules *)
4 Fuse for the I/O modules *
5 Fuses for the relay output contacts
see module description
6 0V rail (signal reference potential)
7 Earthing of the 0V rail