Rockwell Automation Publication 2198-UM002G-EN-P - February 2019 131
Connect the Kinetix 5700 Drive System Chapter 5
Ungrounded Power Configurations
The ungrounded power configuration (Figure 83), corner-grounded
(Figure 82
), and impedance-grounded (Figure 81) power configurations do
not provide a neutral ground point.
Figure 83 - Ungrounded Power Configuration
(1) 2198-Pxxx power supply has the ground jumper removed. 2198-xxxx-ERSx inverters have the ground jumpers removed.
Refer to Power Wiring Examples beginning on page 343 for input power
interconnect diagrams.
IMPORTANT If you determine that you have ungrounded, corner-grounded, or
impedance-grounded power distribution in your facility, you must remove
the ground screw in each of your DC-bus power supplies, iTRAK power
supplies, and dual-axis inverters, and the ground jumper in each of your
single-axis inverters.
Refer to Ground Screw/Jumper Settings
on page 135 for more information.
Transformer
Three-phase
Input VAC
Chassis Ground
Bonded Cabinet
Ground
Ground Grid or
Power Distribution Ground
Connect to
drive module
ground stud.
Circuit
Protection
M1
Contactor
2198-Pxxx DC-bus Power Supply
(1)
(bottom view)
ATTENTION: Ungrounded and corner-grounded systems do not reference
each phase potential to a power distribution ground. This can result in an
unknown potential to earth ground. Drive-to-motor cable lengths are
limited with these AC power source types. See Appendix D, beginning on
page 401
, for more information.
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