20 Rockwell Automation Publication 1766-UM001I-EN-P - June 2015
Chapter 2 Install Your Controller
Mounting the Controller
MicroLogix 1400 controllers are suitable for use in an industrial environment
when installed in accordance with these instructions. Specifically, this equipment
is intended for use in clean, dry environments (Pollution degree 2
(1)
) and to
circuits not exceeding Over Voltage Category II
(2)
(IEC 60664-1).
(3)
(1)
Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that
occasionally a temporary conductivity caused by condensation shall be expected.
(2)
Over Voltage Category II is the load level section of the electrical distribution system. At this level transient
voltages are controlled and do not exceed the impulse voltage capability of the product’s insulation.
(3)
Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
ATTENTION: Do not remove the protective debris shield until
after the controller and all other equipment in the panel near the
controller are mounted and wiring is complete. Once wiring is
complete, remove protective debris shield. Failure to remove shield
before operating can cause overheating.
ATTENTION: Electrostatic discharge can damage semiconductor
devices inside the controller. Do not touch the connector pins or
other sensitive areas.
For environments with greater vibration and shock concerns, use the
panel mounting method described on page 22, rather than DIN rail
mounting.
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