Emc Compliance - Allen-Bradley 8720MC-RPS065 User Manual

EMC Compliance

To declare conformity with the requirements of the CE mark, the 8720MC-
RPS unit must comply with the EMC directive and low voltage directive.
ATTENTION: Meeting CE requires a grounded system, and the method of
grounding the AC line filter and 8720MC-RPS unit must match. Failure to do
this renders the filter ineffective and can cause damage to the filter. For the
grounding example, refer to
For more information on electrical noise reduction, refer to the System Design
for Control of Electrical Noise Reference Manual, publication GMC-RM001.
IMPORTANT The 8720MC-RPS unit is not subject to the Machine Directive. However,
when the 8720MC-RPS unit is combined with other equipment, control
cabinet and machine, it becomes necessary to declare compliance with the
Machine Directive. The noise level can vary depending on the installation
and wiring of the 8720MC-RPS unit, and other equipment in the control
cabinet. It has been already confirmed that the 8720MC-RPS unit complies
with EMC standards, but only when the 8720MC-RPS unit is composed of the
component parts designated by Rockwell Automation.
For you to declare conformity with the requirements of the CE Mark, you
must confirm that the unit complies with EMC standards on the final
conditions after completion of installation and wiring.
To meet CE requirements, these requirements apply:
• Use a control cabinet made of metal for installing the 8720MC-RPS
unit.
• Install a line filter designated by Rockwell Automation to the power
input line of the 8720MC-RPS units. Wiring to the line filter must be as
short as possible.
• Because current leaks to the earth when a line filter is installed,
connection to earth ground must be secured. Due to leaked current, the
earth leakage breaker can malfunction. Select a proper breaker
complying with leaked current (rated current 100...500 mA and
operating time within 0.1...2.0 seconds).
• The control cabinet must be grounded. Wiring to the ground terminal
of the control cabinet must be as thick and short as possible.
• The input and output line of the 8720MC-RPS units must be separated
from the output line of the inverter unit as far as possible.
• Wiring of the control signal must be terminated within the control
cabinet. Should the control cable be needed to extend out of the control
cabinet, it is recommended to use shielded cables. When ferrite cores are
used, install them to the side of the 8720MC-RPS units. The following
are recommended ferrite cores for use with control cables:
– ZCAT2032-0930 (inside diameter 9 ±1 mm): TDK
– ZCAT2035-1330 (inside diameter 13 ±1 mm): TDK
• For help on wiring to the other equipment and motors connected to the
8720MC-RPS unit, refer to the manuals of relevant equipment.
Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018
Connect the 8720MC-RPS Unit
Input Power Configuration on page
Chapter 5
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