Rockwell Automation Publication 2198-UM001M-EN-P - November 2022 207
Appendix C Size Multi-axis Shared-bus Configurations
Shared AC/DC Hybrid Example
If the required motoring power exceeds the available converter power that is
sourced by the shared DC configuration, then connect a second converter
drive to make a shared AC/DC hybrid configuration. This increases the
available converter power.
In this example, the same four 2198-H040-ERS drives are used, however, two
are connected as parallel converter (leader) drives and the other two as
common-bus (follower) drives. The total converter power is derated by 30%.
Figure 111 - Shared AC/DC Hybrid Configuration
The available converter power to the system is (8.4 • 2) • 0.7 = 11.76 kW. In this
example, the total motoring load must not exceed 11.76 kW. The available
converter power was increased by 40% over the same drives in shared DC
configuration.
Bonded Cabinet
Ground
Three-phase
Input Power
24V Input
Control Power
2198-H040-ERS
Common-bus (converter)
Leader Drives
2198-H040-ERS
Common-bus (inverter)
Follower Drives
DC Bus Connections
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