Rockwell Automation 2090-SRxxx External Shunt Modules Installation Instructions - Manual (Page 12)

Publication 2090-IN004B-EN-P — June 2008
12 External Shunt Modules
When mounting your shunt module inside the enclosure, follow these
additional guidelines:
•
Metal-clad modules can be mounted anywhere in the dirty zone,
but as close to the 1394 drive as possible.
•
Shunt DC-bus wires can be run with motor power cables.
•
Keep unshielded wiring as short as possible. Keep shunt DC-bus
wiring as flat to the cabinet as possible.
•
Separate shunt DC-bus cables from other sensitive, low voltage
signal cables.
External Shunt Module Mounted Inside the Enclosure
C C
D D
VD
D
C
VD
Status
DANGER RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
SERCOS System Module
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
Enclosure
Enclosure
Dirty Wireway Clean Wireway
Route 24V DC I/O
Shielded Cable
Route Encoder/Analog/Registration
Shielded Cable
24V Motor
Brake PS
Circuit
Breaker
XFMR
AC
Line Filter
DC
Filter
Contactors
1394x-SJT22-x Drive System
I/O and
Feedback Cables
Shunt thermal switch and
fan wires (when exist).
Very dirty shunt connections
segregated (not in wireway).
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).
150 mm (6.0 in.)
clearance, min on all four
sides of the shunt module.