Rockwell Automation 160 SER A FRN 1.XX-4.XX - Manual (Page 11)

160_5_9DU2.doc 3 Mon Sep 15 11:42:00 1997
160 SSC™ Variable Speed Controller (Series B) 3
Motor Cable
• The cable between the controller and motor must be a 4-wire
shielded cable (three phases and ground). Refer to Figures 2 & 3.
• When using a line filter module as specified in Appendix A, motor
cable lengths shall be limited to 75 meters (250 feet) for controllers
rated 200-240VAC and 40 meters (133 feet) for controllers rated
380-460VAC.
• Inside the shielded enclosure, shielded motor cable must be used
as close to the controller’s output terminals as possible. The shield
must be solidly connected to the PE terminal of the controller.
• Where the shielded motor cable exits the enclosure, an EMC-tested
cable clamp, or metal conduit must be used to solidly connect the
cable shield to the enclosure.
• The shield on the motor side must be solidly connected to the motor
housing with an EMC-tested cable clamp, or conduit, providing
good conductivity from the cable shield to the motor housing.
Figure 2 Motor Connections
Figure 3 Shielded Motor and Control Cable Example
Shielded Enclosure
U (T1)
V (T2)
W (T3)
= EMC Tested Shielded Cable Clamp (or Metal Conduit)
* When the control circuitry is located outside of the 160 enclosure.
Motor Wiring TB2
L2
S
L1
R
L3
T
BR
–
BR
+
1 2 3 4 5 6 7 8 9 10 11
T2
V
TI
U T3
W
–
DC
+
DC
Ground Tab – PE
FAULT
READY
4 Wire
Shielded Motor Cable
Ground to Motor Housing
Stranded Copper Wire
Plastic Insulation
Inner Plastic Sheath
Compact Screen of Galvanized (Tinned) Copper or Steel
Outer Plastic Jacket