30 Rockwell Automation Publication 2097-UM002D-EN-P - April 2017
Chapter 2 Install the Kinetix 350 Drive System
Shunt Resistors
Observe these guidelines when mounting your shunt resistor outside the
enclosure:
• Mount shunt resistor and wiring in the very dirty zone or in an external
shielded enclosure.
• Mount resistors in a shielded and ventilated enclosure outside the
cabinet.
• Keep unshielded wiring as short as possible. Keep shunt wiring as flat to
the cabinet as possible.
Figure 8 - Shunt Resistor Outside the Enclosure
(1) If drive system I/O cable contains (dirty) relay wires, route cable in dirty wire way.
(2) When space does not permit 150 mm (6.0 in.) clearance, install a grounded steel shield between the drive and clean wireway.
For examples, refer to the System Design for Control of Electrical Noise Reference Manual, publication GMC-RM001
.
Contactor
Dirty Wireway
Customer-supplied
Metal Enclosure
150 mm (6.0 in.)
clearance (min) on all four
sides of the shunt module.
Very dirty connections
segregated (not in wireway).
Shunt Wiring Methods:
Twisted pair in conduit (first choice).
Shielded twisted pair (second choice).
Twisted pair, two twists per foot (min) (third choice).
Metal Conduit
(where required
by local code)
Ethernet
(shielded)
Cable
No sensitive
equipment within
150 mm (6.0 in.).
(2)
Route 24V DC I/O
Shielded Cable
24V Motor
Brake PS
Enclosure
Clean Wireway
Circuit
Breaker
I/O
(1)
, Ethernet, and
Feedback Cables
DC
Filter
Kinetix 350 Drive
Route Encoder/Analog/Registration
Shielded Cables
D
VD
D
C
C
I/O
(1),
Motor Power and Safety Cables
XFMR
D
AC Line
Filter
VD
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