ABB AC500 PLC Hardware Manual page 1203

2.
2.5.3.2 Mounting and Demounting of S500-eCo I/O Modules
S500-eCo I/O-modules can be mounted either on a DIN rail or with screws on a metal plate.
Mounting I/O
Modules on a
DIN Rail
2019/04/17
Remove the 2 screws.
NOTICE!
Risk of function faults!
The S500-eCo I/O modules are earthed via the DIN rail.
The DIN rail must be included into the earthing concept of the plant.
Use only metal screws.
3ADR010121, 13, en_US
System Assembly, Construction and Connection
AC500-eCo > Mounting and Demounting
1203