Common DC Bus Cable Wiring
In some multi-axis application scenarios, the motion state of each axis is different, some servo motors work in the braking power-generation state, and other servo motors work in the energy-consumption state. Use the common DC bus technology for energy interaction, the energy generated by braking motor can be supplied to the energy-consuming motors, other than dissipating by regenerative resistors, so as to realize the energy-saving effect.
Only those drivers of the same specification are allowed to share bus in this way. To utilize common bus with drivers of different specifications may burn the drivers directly. DC bus P and N of the servo are connected in parallel so as to realize energy transfer among drives;
All drives must use the same power input. It's forbidden to utilize the power supply of different voltage and phase number. Otherwise, it might cause drive damage;
All drives mu-st be powered ON/OFF at the same time. Otherwise, it might cause drive damage;
Voltage level and phase sequence of all drives with common bus shall be consistent. Otherwise, it might cause drive damage and start a fire.
While using common bus, only after completing the configuration of common bus for all drives, can it be allowed for servo drive operation;
After the drive is powered on, when drive Rdy state occurs, drive DO outputs the ready signal, control the relay swich-on so as to realize the common bus connection;
While drive PN is connected to bus, in order to avoid excessive current in case of single-drive exception, please connect a fast fuse between bus bars.