10 Rockwell Automation Publication MOTION-AT007A-EN-P - May 2020
Chapter 1 DC-bus Wiring Guidelines
Wire the External DC-bus Connections
The 2198-CAPMOD-2240 capacitor module and 2198-CAPMOD-DCBUS-IO extension module are used to extend the DC-bus voltage to external
inverter drives. They also provide energy storage. The capacitor module is used alone when the external DC-bus current is ≤104 A. The
capacitor module, combined with a DC-bus module or an extension module, is required when the external DC-bus current is >104 A, up to a
maximum 208 A. Figure 3
is an example of a system requiring >104 A of external DC-bus current. For more information on the use of
accessory modules, see Kinetix 5700 Accessory Modules
on page 71.
Figure 3 - Kinetix 5700 External DC-bus Connection Wiring Example
DC Bus Bar
When using DC bus-bar to connect drives to the system bus, observe the following guidelines:
• DC-bus fuses are required between the Kinetix 5700 power supply cluster and the common DC bus-bar. DC-bus fuses are also
required between the DC bus-bar and the DC input of any external inverter drives. See Kinetix and PowerFlex Drive Specifications
on
page 59 for the recommended common DC-bus circuit protection devices.
• No single external DC-bus connection from the power supply cluster can exceed 70 m (230 ft). You can extend the DC-bus from the
right and left of the power supply cluster, but the total DC-bus length (including DC-bus cabling and DC bus-bar) from the power supply
cluster to all extended clusters cannot exceed 140 m (459 ft).
24V_COM
+24V
2
1
DC+
DC-
24V_COM
+24V
DC+
DC-
24V_COM
+24V
DC+
DC-
DC+
DC-
MS
MS
2
1
Kinetix 5700
2198-Pxxx
DC-bus Power Supply
Bonded Cabinet Ground Bus (user-supplied component)
2198-CAPMOD-DCBUS-IO
Extension Module
Kinetix 5700
2198-Sxxx -ERSx or
2198-Dxxx -ERSx
Inverter
2198-CAPMOD-2240
Capacitor Module
Control Power
(CP) Connectors
DC-bus
(DC) Connectors
PE Ground
Flexible Bus-bars
User-supplied External DC-bus
Wire Lug Connections
Module Status
(MS) Connector
Monitor capacitor module status by wiring to
digital input Bus Capacitor OK on the DC-bus
power supply or to a Logix 5000â„¢ controller.
PE Ground
PE GroundPE Ground
To External
Inverter Drives or
Active Shunt Modules
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