Rockwell Automation 1764-28BXB MicroLogix 1500 Programmable Controller Base Units - Manual (Page 9)

MicroLogix™ 1500 Programmable Controller Base Units 9
Publication 1764-IN001B-EN-P
Mounting the Controller
General Considerations
Most applications require installation in an industrial enclosure (Pollution Degree
2) to reduce the effects of electrical interference (Over Voltage Category II) and
environmental exposure. Locate your controller as far as possible from power
lines, load lines, and other sources of electrical noise such as hard-contact
switches, relays, and AC motor drives. For more information on proper
grounding guidelines, see the Industrial Automation Wiring and Grounding
Guidelines publication 1770-4.1.
!
ATTENTION
Vertical mounting is not recommended due to heat build-up
considerations.
!
ATTENTION
Be careful of metal chips when drilling mounting holes for
your controller or other equipment within the enclosure or
panel. Drilled fragments that fall into the base or processor unit
could cause damage. Do not drill holes above a mounted
controller if the protective debris strips have been removed or
the processor has been installed.
NOTE
Remove the ESD sticker to install expansion I/O modules. An
end cap terminator (catalog numbers 1769-ECR or -ECL) or
an extension cable (catalog numbers 1769-CRR1, -CRR3,
-CLL1, -CLL3, -CRL1, -CRL3) must be used at the end of the
group of I/O modules attached to the MicroLogix 1500
Controller. The end cap terminator is not provided with the
base unit. A maximum of eight I/O modules may be connected
to the base.