10
SLC 500 Thermocouple/mV Analog Input Module
Publication 1746-5.23
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 Rack Slot
Two factors determine where you should install your module in the rack: ambient
temperature and electrical noise. When selecting a slot for your module, try to
position your module:
• in a rack 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 rack power supply (if using a modular system)
Remember that in a modular system, a processor or adapter always occupies the
first slot of the rack.
