Rockwell Automation 2090-SRxxx External Shunt Modules Installation Instructions - Manual (Page 9)

Publication 2090-IN004B-EN-P — June 2008
External Shunt Modules 9
Noise Zones for Ultra3000/Ultra5000 Drives
Observe these guidelines when mounting your external shunt module
outside the enclosure:
•
Mount circuit components and wiring in the very dirty zone or
in an externally shielded enclosure. Run shunt DC-bus 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 DC-bus
wiring as flat to the cabinet as possible.
External Shunt Resistor Mounted Outside the Enclosure
C
C
VD
1394 Digital Servo Controller
300W Shunt Module
BULLETIN 1394 300W SHUNT MODULE ALLEN-BRADLEY
FOR USE WITH 1394-SJT22-X SYSTEM MODULE
CAT. PART SER. INPUT DC INPUT AC FOR FUSE REPLACEMENT USE:
BUSSMAN CAT. NO.
R
D
D
VD
D
D
D
Motor
DC Bus
100-240 VAC 50/60 Hz
L1 AUX
L2/N
AUX
L2/N
L1
-
+
W
V
TB1
External Shunt 3
2
1 Internal
TB2
U
Dirty Wireway Clean Wireway
Motor Power Cable
Very dirty shunt connections
segregated (not in wireway).
Maximum length is 3.05 m (10 ft).
Route Motor Power
Shielded Cable Route Encoder/Analog/Registration
Shielded Cables
Customer-supplied
Metal Enclosure
Metal Conduit
(where required by local code)
Enclosure
Shunt DC-bus Wiring Methods:
Twisted pair in conduit (1st choice).
Shielded twisted pair (2nd choice).
Twisted pair, 2 twists per foot, min (3rd choice).
24V
Power Supply
Circuit
Breaker
XFMR
AC
Line Filter
DC
Filter
Contactors
Ultra3000
(460V) Drive
System
Very dirty power connections
segregated (not in wireway).
150 mm (6.0 in.)
clearance, min on all four
sides of the shunt module.