224 Rockwell Automation Publication 2198-UM001I-EN-P - May 2019
Appendix C Size Multi-axis Shared-bus Configurations
Shared AC/DC Example
If the required motoring power exceeds the available converter power sourced
by two leader drives, then connect all four drives as parallel converter drives.
This further increases the available converter power.
In this example, the same four 2198-H040-ERS drives are used, however, all
four are connected as parallel converter (leader) drives. The total converter
power is derated by 30%.
Figure 112 - Shared AC/DC Configuration
The available converter power to the system is (8.4 • 4) • 0.7 = 23.52 kW. In
this example, total motoring load must not exceed 23.52 kW. The available
converter power was increased by 180% over the same drives in shared DC
configuration.
Control Power Current
Calculations
Kinetix 5500 servo drives and the Bulletin 2198 capacitor module have
different 24V DC power consumption. Factors to consider when calculating
the combined current demand from your 24V DC power supply includes the
following:
• Catalog number for each drive in the system
• Whether the motor or actuator includes the holding brake option
• Whether the system includes Bulletin 2198 capacitor modules (1 to 4
modules are possible)
Bonded Cabinet
Ground
Three-phase
Input Power
24V Input
Control Power
2198-H040-ERS
Converter Drives
DC Bus Connections
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