40 Rockwell Automation Publication 2198-UM002L-EN-P - October 2021
Chapter 2 Plan the Kinetix 5700 Drive System Installation
• Use high-frequency (HF) bonding techniques to connect the modules,
enclosure, machine frame, and motor housing, and to provide a low-
impedance return path for high-frequency (HF) energy and reduce
electrical noise.
Bond the Kinetix 5700 system power supply, inverter modules, iTRAK®
power supply, accessory modules, and line filter grounding screws by
using a braided ground strap as shown in Figure 83 on page 132
.
Refer to the System Design for Control of Electrical Noise Reference Manual,
publication GMC-RM001
, to better understand the concept of electrical noise
reduction.
DC-bus Voltage Regulation
The 2198-Pxxx DC-bus power supply does not regulate DC-bus voltage. As a
result, the DC-bus power supply always has DC-bus voltage regulation
disabled. The 2198-RPxxx regenerative bus supply can be configured to provide
active DC-bus voltage regulation or passive AC rectification like the 2198-Pxxx
DC-bus (converter) power supply.
Converter Startup Method
The Converter Startup Method (Axis Properties>General category) specifies
the method to be used to initiate transition of the regenerative converter axis
from the STOPPED state to the STARTING state.
Set the Converter Startup Method to one of these two settings:
• Automatic (default): After applying AC, the converter automatically
transitions to the RUNNING state with active DC-bus voltage regulation
loops operational
• Enable Request: After applying AC, the converter stays in the STOPPED
state and performs passive AC rectification. Once it receives an Enable
Request from the controller, the converter transitions to the RUNNING
state with active DC-bus voltage control loops operational
In Enable Request mode, you must issue an MSO instruction (after AC is
applied and CIP_Axis_State = STOPPED) to enable voltage regulation on the
regenerative bus supply and an MSF instruction to disable voltage regulation.
IMPORTANT
Active or passive DC-bus voltage regulation must be determined during
system configuration in the Studio 5000 Logix Designer® application.
IMPORTANT
Regeneration back to the AC source is only possible when the DC-bus
voltage regulation is enabled.
ATTENTION: To help prevent permanent inverter damage, make sure that
all inverter ground jumpers are removed before enabling DC-bus voltage
regulation.
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