Manual
120 Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014
Appendix A Motor Cable Length Restrictions Tables
Table 51 - PowerFlex 755 Floor Mount Drives, 480V Shielded/Unshielded Cable – Meters (Feet)
Drive Rating No Solution Reactor Only Reactor and Damping Resistor Reactor Resistor Available Options
Frame Hp kHz 1000V 1200V 1488V 1600V 1000V 1200V 1488V 1600V 1000V 1200V 1488V 1600V Cat. No. Ohms Watts
TFA1
TFB2
RWR2
RWC
8
350
2
12.2
(40)
30.5
(100)
106.7
(350)
152.4
(500)
12.2
(40)
45.7
(150)
137.2
(450)
182.9
(600)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
1321-3R500-B
20 495
(2)
●
4
7.6
(25)
24.4
(80)
91.4
(300)
121.9
(400)
12.2
(40)
30.5
(100)
91.4
(300)
121.9
(400)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
20 990
(2)
●
400
2
12.2
(40)
30.5
(100)
106.7
(350)
152.4
(500)
12.2
(40)
45.7
(150)
137.2
(450)
182.9
(600)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
1321-3R500-B
20 495
(2)
●
4
7.6
(25)
24.4
(80)
91.4
(300)
121.9
(400)
12.2
(40)
30.5
(100)
91.4
(300)
121.9
(400)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
20 990
(2)
●
450
2
12.2
(40)
30.5
(100)
106.7
(350)
152.4
(500)
12.2
(40)
45.7
(150)
137.2
(450)
182.9
(600)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
1321-3R600-B
20 495
(2)
●
4
7.6
(25)
24.4
(80)
91.4
(300)
121.9
(400)
12.2
(40)
30.5
(100)
91.4
(300)
121.9
(400)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
20 990
(2)
●
500
2
12.2
(40)
30.5
(100)
106.7
(350)
152.4
(500)
12.2
(40)
45.7
(150)
121.9
(400)
182.9
(600)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
1321-3R750-B
20 495
(2)
●
4
7.6
(25)
24.4
(80)
91.4
(300)
121.9
(400)
12.2
(40)
30.5
(100)
91.4
(300)
121.9
(400)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
20 990
(2)
●
600
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
1321-3R750-B
20 735
(3)
●
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
20 1470
(3)
●
650
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
1321-3R850-B
20 735
(3)
●
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
20 1470
(3)
●
9
(1)
700
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
213.4
(700)
304.8
(1000)
365.8
(1200)
2 x
1321-3RB500-B
40 375
(3)
●
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
137.2
(450)
243.8
(800)
304.8
(1000)
40 750
(3)
800
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
182.9
(600)
304.8
(1000)
365.8
(1200)
2 x
1321-3R600-B
40 375
(4)
●
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
121.9
(400)
243.8
(800)
304.8
(1000)
40 750
(4)
900
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
182.9
(600)
304.8
(1000)
365.8
(1200)
2 x
1321-3R600-B
20 525
(4)
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
121.9
(400)
243.8
(800)
304.8
(1000)
20 1050
(4)
1000
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
182.9
(600)
304.8
(1000)
365.8
(1200)
2 x
1321-3R750-B
20 525
(4)
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
121.9
(400)
243.8
(800)
304.8
(1000)
20 1050
(4)
1100
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
182.9
(600)
304.8
(1000)
365.8
(1200)
2 x
1321-3R750-B
20 525
(4)
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
121.9
(400)
243.8
(800)
304.8
(1000)
20 1050
(4)
1250
2
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
12.2
(40)
45.7
(150)
91.4
(300)
121.9
(400)
61.0
(200)
182.9
(600)
304.8
(1000)
365.8
(1200)
2 x
1321-3R850-B
20 600
(5)
4
7.6
(25)
24.4
(80)
61.0
(200)
91.4
(300)
12.2
(40)
30.5
(100)
76.2
(250)
106.7
(350)
45.7
(150)
121.9
(400)
243.8
(800)
304.8
(1000)
20 1200
(5)
continued