Publication 20A-IN009C-EN-P
12 PowerFlex® 70 Adjustable Frequency AC Drive Installation Instructions
If any or all of these conditions exist, it is recommended that the user
install a minimum amount of impedance between the drive and the
source. This impedance could come from the supply transformer itself,
the cable between the transformer and drive or an additional transformer
or reactor. The impedance can be calculated using the information
supplied in the Wiring and Grounding Guidelines for Pulse Width
Modulated (PWM) AC Drives, publication DRIVES-IN001.
Single-Phase Input Power
The PowerFlex 70 drive is typically used with a three-phase input
supply. The drive has been listed by U.L. to operate on single-phase
input power. Single-phase operation provides 50% of the three-phase
rated current. Refer to Table F
through Table H.
Generator Input Power
Contact Allen-Bradley Drives Technical Support for details on how to
properly power a drive using generator power.
Terminal Block Specifications
Name Frame Description
Wire Size Range
(1)
Torque
Maximum Minimum Maximum Recommended
Power Terminal
Block
A, B, C Input power and
motor connections
4.0 mm
2
(10 AWG)
0.3 mm
2
(22 AWG)
1.1 N•m
(10 lb•in)
0.8 N•m
(7 lb•in)
D Input power and
motor connections
10.0 mm
2
(6 AWG)
0.8 mm
2
(18 AWG)
1.7 N•m
(15 lb•in)
1.4 N•m
(12 lb•in)
E Input power and
motor connections
25.0 mm
2
(3 AWG)
2.5 mm
2
(14 AWG)
2.71 N•m
(24 lb•in)
2.71 N•m
(24 lb•in)
I/O Terminal
Block
All Signal & control
connections
1.5 mm
2
(16 AWG)
0.05 mm
2
(30 AWG)
0.55 N•m
(4.9 lb•in)
0.5 N•m
(4.4 lb•in)
SHLD Terminal All Terminating point
for wiring shields
— — 1.6 N•m
(14 lb•in)
1.6 N•m
(14 lb•in)
(1) Maximum/minimum sizes that the terminal block will accept - these are not recommendations.
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