Rockwell Automation 2097-Vxxx Kinetix 300 EtherNet/IP Indexing Servo Drive User Manual - Manual (Page 62)

62 Rockwell Automation Publication 2097-UM001D-EN-P - November 2012
Chapter 4 Connecting the Kinetix 300 Drive System
This example illustrates grounded three-phase power wired to single-phase
Kinetix 300 drives when phase-to-phase voltage exceed
s drive specifications.
A neutral must be connected when single-phase drives are attached to a three-
phase isolating transformer secondary. It is not necessary that all three-phases be
loaded with drives, but each drive must have its power return via the neutral
connection.
Figure 37 - Single-phase Amplifiers (one AC line filter per drive)
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 include a neutral connection as
shown above. This applies if three-phase is brought directly into the filter and no
isolating transformer is present.
ATTENTION: Failure to connect the neutral can result in supply voltage swings
at the individual drives. This occurs when the neutral point moves vectorially as
a result of load variations normally experienced by the individual drives. The
supply voltage swing may cause undervoltage and overvoltage trips on the
drives, and the drive can be damaged if the overvoltage limit is exceeded.
L1
L2
L3
L1
L2
L1
L2
L1
L2
IPD
L1
N
IPD
L1
N
IPD
L1
N
L1
L2
L1
L2
L1
L2 E
E
E
2097-V31PRx
IPD
L1
L2
IPD
L1
L2
IPD
L1
L2
2097-V33PRx
Bonded Cabinet Ground Bus
Transformer (WYE) Secondary
Ground Grid or Power Distribution Ground
AC Line
Filter
AC Line
Filter
AC Line
Filter
Kinetix 300 Drives
(System A)
Single-phase AC Input
Grounded
Neutral
Grounded Neutral
Kinetix 300 Drives
(System A)
Single-phase AC Input
Kinetix 300 Drives
(System A)
Single-phase AC Input
M1
Contactor
Input Fusing
IMPORTANT Providing an EMC line filter for each drive is the preferred configuration, and
required for CE compliance.