84 Rockwell Automation Publication 2198-UM004D-EN-P - December 2022
Chapter 4 Connect the Kinetix 5100 Drive System
Feeder and branch short-circuit protection is not illustrated.
If a three-phase line filter is used to feed multiple single-phase drives (not
recommended), it is important that the filter has a neutral connection as
shown in Figure 51
. This neutral connection applies if three-phase power is
wired directly into the filter and no isolation transformer is present.
Voiding of CE and UK Compliance
The three-phase with neutral in-line filter applications that are described in
Three-phase Input Power used with Single-phase Drives
are not adequate for
EMC and aspect for CE and UK compliance. Therefore, EMC validity and CE
and UKCA marking by Rockwell Automation is voided when three-phase and
neutral in-line filters are used.
Using Isolation Transformers with Grounded Power Configurations
When using an isolation transformer, attach a chassis ground wire to the
neutral connection. This grounded neutral connection does the following:
• Prevents the system voltage from floating and avoids high voltages that
can otherwise occur, for example due to static electricity
• Provides a solid earth path for fault conditions
IMPORTANT
An AC line filter for each drive is the preferred configuration, and
required for CE and UK compliance.
ATTENTION: The three-phase isolation transformers with neutral in-line
filter applications described in this document have not been tested for EMC
compliance and products that are used in such installations are not
considered CE and UK compliant.
If this three-phase isolation transformer and neutral in-line filter application
is used, you are responsible for EMC validation and CE and UKCA marking of
the system.
If CE and UK compliance is a customer requirement, single-phase or three-
phase line filters, tested by Rockwell Automation, and specified for the
product must be used. See Kinetix Servo Drives Specifications Technical
Data, publication KNX-TD003
for catalog numbers.
IMPORTANT
Transformers (auto transformers are not supported) must have a WYE
secondary with grounded neutral. Phase to neutral voltage must not
exceed the input voltage rating of the drive.
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