ABB AC500 - 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)

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G1 Introduction to AC500 1-43 AC500 / Issued: 07.2006
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
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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Figure: Maximum configuration (1 CPU Terminal Base plus 7 I/O Terminal Units)