Allen-Bradley Kinetix 5100 2198-E1004-ERS - Single-Phase Amplifiers (One AC Line Filter Per Drive); Three-Phase Power Wired to Single-Phase Drives

Rockwell Automation Publication 2198-UM004A-EN-P - October 2019 75
Connect the Kinetix 5100 Drive System Chapter 4
Three-phase Power Wired to Single-phase Drives
This example illustrates grounded three-phase power that is wired to single-phase
Kinetix 5100 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 51 - 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 is on a neutral connection as shown
in Figure 51
. The neutral connection 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. Voltage swings occur when the neutral point
moves in a vectorial as a result of load variations that 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.
L3
L2
L1
L2
L1
L2
L1
L2
L1
L2
L1
L2
L1
E
E
E
L2
L1
L2
L1
L2
L1
L2
L1
Bonded Cabinet Ground Bus
Transformer (wye) Secondary
Ground Grid or Power Distribution Ground
AC Line
Filter
AC Line
Filter
AC Line
Filter
Kinetix 5100 Drives
(System A)
Single-phase AC Input
Grounded
Neutral
Grounded Neutral
Kinetix 5100 Drives
(System B)
Single-phase AC Input
Kinetix 5100 Drives
(System C)
Single-phase AC Input
M1
Contactors
Circuit
Protection
2198-E1004-ERS, 2198-E1007-ERS,
2198-E1015-ERS, and 2198-E1020-ERS
Drives with Single-phase Operation
IMPORTANT An AC line filter for each drive is the preferred configuration, and required for
CE compliance.