Rockwell Automation Publication 2099-UM001D-EN-P - December 2012
37
Install the Kinetix 7000 Drive System
Chapter 2
Shunt Resistor
Observe the following guidelines when mounting your external shunt resistor
outside the enclosure.
•
Mount circuit components and wiring in the very dirty zone or in an
external shielded enclosure. Run shunt power and fan wiring inside metal
conduit to minimize the effects of EMI and RFI.
•
Mount resistors (other than metal-clad) 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.
•
Route thermal switch and fan wires separate from shunt power.
Figure 14 - External Shunt Resistor Outside the Enclosure
C1
C1
V
D
D3
D2
D1
V
D
V
D
D1
D2
Kinetix 7000 drive
Clean Wireway
Dirty Wireway
No sensitive
equipment within
150 mm (6.0 in.)
Motor Power Cables
Very dirty connections segregated (not
in wireway)
Route 24V DC I/O
Shielded Cable
Route Encoder/Analog/
Registration
Shielded Cables
Customer-supplied
metal enclosure
Minimum of 150 mm (6.0 in.) of clearance
on all sides of the shunt module
Enclosure
Shunt Power Wiring Methods:
Twisted pair in conduit (1st choice)
Shielded twisted pair (2nd choice)
Twisted pair, 2 twists per foot min. (3rd choice)
Metal conduit
(where required
by local code)
I/O and Feedback
Cables
