Rockwell Automation 2097-Vxxx Kinetix 350 Single-axis EtherNet/IP Servo Drive User Manual - Manual (Page 56)

56 Rockwell Automation Publication 2097-UM002C-EN-P - December 2013
Chapter 4 Connect the Kinetix 350 Drive System
This example illustrates grounded three-phase power wired to single-phase
Kinetix 350 drives when phase-to-phase voltage exceeds 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 31 - Single-phase Amplifiers (one AC line filter per drive)
Feeder and branch short circuit protection is not illustrated.
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 can 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
IPD
L1
L2
IPD
L1
L2
IPD
L1
L2
Bonded Cabinet Ground Bus
Transformer (WYE) Secondary
Ground Grid or Power Distribution Ground
AC Line
Filter
AC Line
Filter
AC Line
Filter
Kinetix 350 Drives
(System A)
Single-phase AC Input
Grounded
Neutral
Grounded Neutral
Kinetix 350 Drives
(System A)
Single-phase AC Input
Kinetix 350 Drives
(System A)
Single-phase AC Input
M1
Contactor
Input Fusing
2097-V31PRx-LM 2097-V33PRx-LM
IMPORTANT Providing an AC line filter for each drive is the preferred configuration and
required for CE compliance.