Rockwell Automation 1746-NT8 SLC 500 Thermocouple/mV Analog Input Module/ Instructions - Manual (Page 7)

SLC 500 Thermocouple/mV Analog Input Module 7
Publication 1746-IN015C-EN-P - July 2001
Considerations for a Modular System
Place your module in any slot of an SLC 500 modular, or modular expansion
chassis, except for the left-most slot (slot 0) reserved for the SLC processor or
adapter modules.
Considerations for a Fixed Controller
The power supply in the 2-slot SLC 500 fixed I/O chassis (1746-A2) can support
only specific combinations of modules. Make sure the chassis power supply can
support the 1746-NT8 and additional module power requirements.
Selecting A Chassis Slot
Two factors determine where you should install your module in the chassis:
ambient temperature and electrical noise. When selecting a slot for your module,
try to position your module:
•
in a chassis close to the bottom of the enclosure (where the air is cooler)
•
away from modules that generate significant heat, such as the 1746-OA16 or
the 1746-IA16
•
in a slot away from ac or high-voltage dc modules, hard contact switches,
relays, and ac motor drives
•
away from the chassis power supply (if using a modular system)
Remember that in a modular system, a processor or adapter always occupies the
first slot of the chassis.