Internal power wiring, Drives with parallel power structures – Rockwell Automation 20D PowerFlex 700S/700H Frames 10...14 IP00, NEMA/UL Open Power Structures User Manual
Page 21
Rockwell Automation Publication PFLEX-IN020C-EN-P - July 2013
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PowerFlex 700S and 700H Frames 10...14 IP00, NEMA/UL Open Power Structures
Internal Power Wiring
When cables are used for power wiring, they must be copper and rated at 90° C
(194° F). For frames 13 and 14 drives, power connections between the AC choke
and the NFE converters are typically made using busbars, however, copper cables
may be used.
Drives with Parallel Power Structures
Drives can contain one to six converters. Each converter contains a set of input
power terminals. When parallel power structures are present, you must supply
power to all sets of input terminals on these drives. Refer to
Table 1
and
Table 2
on page
3
for the number of converters provided with each drive.
Connect power cables (L1, L2, L3) between the appropriate output terminals of
the AC choke and the input terminals of the power structure. Note that multiple
cables per phase may be required. Refer to
Figure 14
and
Figure 15
on page
22
for
cable/busbar routing examples.
ATTENTION: The following information is merely a guide for proper installation.
Rockwell Automation, Inc. cannot assume responsibility for the compliance or
the noncompliance to any code, national, local or otherwise for the proper
installation of this drive or associated equipment. A hazard of personal injury
and/or equipment damage exists if codes are ignored.
IMPORTANT
Parallel wiring must have the same cable dimensions, type and routing. Non-
symmetrical wiring may cause unequal loading between the converters and
reduce the drive’s ability to deliver current to the motor.
IMPORTANT
The choke has two sets of output terminals designed for different voltages. Tap
1 is the incoming line connection. Tap 2 or 3 is used to connect to the drive
input. Refer to
Table 1
and
Table 2
on page
3
for specific tap connections.
IMPORTANT
Busbar alignment should be vertical to allow the maximum flow of cooling air
through the enclosure.
Tap 2
Tap 3
L1
L2
L3
AC Input
Terminals (Tap 1)