Rockwell Automation 8720MC High Performance Drives Installation Manual - Manual (Page 32)

Publication 8720MC-IN001D-EN-P — December 2002
1-20 Installing Your 8720MC Drive
External Active Shunt Module
Observe the following guidelines when mounting your external active
shunt module (1336-MOD-KBxxx) outside the enclosure. Refer to
Figure 1.9 for an example.
• Mount circuit components and wiring in the very dirty zone or in
an external shielded enclosure (as shown in the figure below)
• Run shunt power and fan wiring inside metal conduit to minimize
the effects of EMI and RFI
• Keep unshielded wiring as short as possible
Figure 1.9
External Active Shunt Outside the Enclosure
C C D
VD
D
P1 P4 P5
TB1
VD
BULLETIN 1336 BRAKING CHOPPER
FOR USE WITH 460 VAC A.F. DRIVES CAT 1336-WB009 SER A INPUT 750 VDC 9.0 ADC (RMS)
MADE IN U.S.A.
DC POWER
BRAKE ON UL ® LIS TED 966X
IND CONT E Q UL ® LIS TED 966X
IND CONT E Q C
A–B P\N 74101-778-XX REV
VD
Dirty Wireway Clean Wireway
Customer-supplied
metal enclosure (optional)
150 mm (6.0 in.) of
clearance on all sides
of the shunt module
minimum
Metal
conduit
Enclosure
Twisted conductors
(2 twists per foot) min. or
a shielded twisted pair.
Allen-Bradley
Bulletin 1336-MOD-KBxxx
External Active Shunt Module
Shield Clamp(s)
Route 24V dc I/O
Shielded Cable
Route Encoder/Analog/Registration
Shielded Cable
Motor Power
Shielded Cable
AC
Line Filter
8720MC
B Frame Chassis
Shield
Clamps
Note: Input AC components not
included in this figure.
Keep very dirty connections as short as
possible and segregated (not in wireway)