Shared Bus - Infeed Module, Single Supply, Regenerative Regulated Bus

Consider a typical 3-axis gantry robot application in a shared bus configuration with the following:

    Infeed Module
 		 Line rectifier power module with a regulated bus
 
    X Axis Inverter module
 
    Y Axis Inverter module
 
    Z Axis Inverter module

  System supply power

The total power the servo system draws or regenerates to the supply connection
    > 0 is supply
    < 0 is regenerative
 

  Bus supply power

The supply power to the bus from the infeed module
    > 0 is supply
    < 0 is regenerative
 

  Inverter power

The inverter power to and from the motor
    > 0 is motoring
    < 0 is generating