Rockwell Automation 8720MC High Performance Drives Installation Manual - Manual (Page 31)

Publication 8720MC-IN001D-EN-P — December 2002
Installing Your 8720MC Drive 1-19
The table below indicates the zoning requirements of cables
connecting to the external active shunt module.
Mounting Guidelines to Reduce Electrical Noise
When mounting AC input components or an external active shunt
module refer to the sections below for guidelines designed to reduce
system failures caused by excessive electrical noise.
AC Line Filters
Observe the following guidelines when mounting your AC line (EMC)
filter (refer to figures 1.6 and 1.7 for examples).
• Mount the AC line filter on the same panel as the 8720MC and as
close to the 8720MC as possible.
• Good HF bonding to the panel is critical. For painted panels, refer
to Figure 1.4.
• AC input power cable between the AC line filter and 8720MC must
be shielded if it enters a wireway.
• Segregate input and output wiring as far as possible.
Line Reactor, Harmonic Filter, and Varistor
All the guidelines that apply to AC line filters also apply to the line
reactor, harmonic filter, and varistor. These components only apply to
common bus configurations.
Wire/Cable Connector
Zone Method
Very
Dirty
Dirty Clean
Ferrite
Sleeve Shielded
Cable
DC+, DC- (shielded option)
TB1
X X
DC+, DC- (unshielded option) X
Fan (if present) N/A X
IMPORTANT
CE test certification applies only to AC line filter and
single 8720MC drive. Multiple drive loads may
perform satisfactorily, but the user takes legal
responsibility.