ABB AC500 PLC Hardware Manual page 1264

System Assembly, Construction and Connection
AC500 (Standard) > Mounting and Demounting
2.6.3.2 Mounting and Demounting the Terminal Unit
Mounting on
DIN rail
1.
2.
3.
Mounting with If the Terminal Unit should be mounted with screws, Wall Mounting Accessories TA526
Ä Chapter 2.6.5.7 "TA526 - Wall Mounting Accessory" on page 1308 must be inserted at the
Screws
rear side first. These plastic parts prevent bending of the Terminal Base while screwing on.
1264
Mount DIN rail 7.5 mm or 15 mm.
Mount the Terminal Unit.
The Terminal Unit is snapped into the DIN rail in the same way as the Terminal Base.
Once secured to the DIN rail, slide the Terminal Unit to the left until it fully locks into place
creating a solid mechanical and electrical connection.
When attaching the devices, make sure the bus connectors are securely
locked together to ensure proper electrical connection. Max. 10 Terminal
Units can be attached.
Demounting: A screwdriver is inserted in the indicated place to separate the Terminal
Units.
3ADR010121, 13, en_US 2019/04/17