Rockwell Automation 1764-xxxx MICROLOGIX 1500 PROGRAMMABLE CONTROLLERS - Manual (Page 28)

Publication 1764-UM001B-EN-P - April 2002
2-2 Installing Your Controller
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC Low
Voltage, by applying the safety requirements of EN 61131-2
Programmable Controllers, Part 2 - Equipment Requirements and
Tests.
For specific information required by EN 61131-2, see the appropriate
sections in this publication, as well as the following Allen-Bradley
publications:
•
Industrial Automation Wiring and Grounding Guidelines for
Noise Immunity, publication 1770-4.1
•
Guidelines for Handling Lithium Batteries, publication AG-5.4
•
Automation Systems Catalog, publication B111
Installation Considerations Most applications require installation in an industrial enclosure
(Pollution Degree 2
(1)
) to reduce the effects of electrical interference
(Over Voltage Category II
(2)
) 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.
(1) Pollution Degree 2 is an environment where normally only non-conductive pollution occurs except that
occasionally temporary conductivity caused by condensation shall be expected.
(2) Overvoltage 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 products insulation.
ATTENTION
!
Vertical mounting of the controller 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 are removed or the processor
is installed.