Mounting Of The I/O Terminal Unit (Tu515, Tu516, Tu531 Or Tu532) To The Cpu Terminal Base; I/O Terminal Unit Assembly; Maximum Configuration (1 Cpu Terminal Base Plus 7 I/O Terminal Units) - ABB AC500 Introduction Manual

Step 3: Mounting of the I/O Terminal Unit (TU515, TU516, TU531 or TU532) to the CPU Terminal Base
Figure: I/O Terminal Unit assembly (TU515, TU516, TU531 or TU532)
The I/O Terminal Unit is snapped into the DIN rail in the same way as the Terminal Base. Once secured
to the DIN rail, slide the I/O unit to the left until it fully locks into place creating a solid mechanical and
electrical connection.
Up to 7 I/O Terminal Units could be combined with a CPU Terminal Base.
ATTENTION
Figure: Maximum configuration (1 CPU Terminal Base plus 7 I/O Terminal Units)
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G1
Introduction to AC500
When attaching the CPU Terminal Base and I/O modules, make sure the bus
connectors are securely locked together to ensure proper electrical connection.
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AC500 / Issued: 07.2006