ABB APBU-44C 64669982 Branching Unit

APBU 44C is a parallel branch and data logging unit designed for ACS800 series inverters or power modules. It is used to achieve parallel connection of multiple ACS800 series inverters or power modules and record power level data in real time.

It also has a built-in data logger that can collect real-time data of the power level of the storage module to assist in fault tracing and analysis.

Branch connection：

• APBU-44C: supports 4 inverters/power modules in parallel.
• APBU-44CE: expands to 12 modules in parallel (suitable for large systems)

• APBU-44C is connected in the PPPCS fiber link between the RDUC drive control unit and the module. APBU-44C can connect four inverters or power modules. APBU-44C can connect twelve.

• APBU-44C is equipped with a memory backup battery to protect the data logger data during power failure, and has a battery status indicator and replacement prompt.

• APBU-44C needs to be turned on when using the memory backup battery (actuator 6), otherwise the data logger data will be erased during power failure. Under normal circumstances, a new battery can keep the memory of the power-off device for at least 6 months. If the device is powered on and the "BAT" LED does not light up when the battery is turned on, the battery needs to be replaced.