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Module location in chassis – Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual User Manual

Page 35

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Publication 1746-UM008B-EN-P - December 2006

Install and Wire the Module 35

Module Location in Chassis

This section contains information on module location in modular and
fixed chassis.

Modular Chassis Considerations

Place your RTD module in any slot of an SLC 500 modular chassis
(except slot 0) or a modular expansion chassis. Slot 0 is reserved for
the modular processor or adapter modules.

Fixed Expansion Chassis Considerations

When using the Fixed Controller Compatibility Table, be aware that
there are certain conditions that affect the compatibility characteristics
of the BASIC module (BAS) and the DH-485/RS-232C module (KE).

When you use the BAS module or the KE module to supply power to
a 1747-AIC Link Coupler, the link coupler draws its power through the
module. The higher current drawn by the AIC at 24V dc is calculated
and recorded in the table for the modules identified as BASn (BAS
networked) or KEn (KE networked). Make sure to refer to these
modules if your application uses the BAS or KE module in this way.

IMPORTANT

The 2-slot, SLC 500 fixed I/O expansion chassis (1746-A2)
supports only specific combinations of modules. If you are using
the RTD module in a 2-slot expansion chassis with another SLC
I/O or communication module, refer to the Fixed Controller
Compatibility Table t
o determine whether the combination can
be supported.