ABB APBU-44C Fiber Optic Branching Unit – ACS800 MultiDrive PPCS Distribution – Tested

Product Overview

Original ABB APBU-44C PPCS fiber optic branching and datalogger unit for ACS800 MultiDrive systems. Serves as the communication distribution hub between the RDCU drive control unit and multiple parallel inverter or supply modules. Distributes PPCS fiber optic control signals to up to 4 power modules for synchronized operation, current sharing, and fault interlocking. Built-in datalogger records real-time voltage, current, temperature, and fault data for post-event analysis. Essential for multi-drive common DC bus systems.

Key Features

• Genuine ABB original – for ACS800 MultiDrive systems
• PPCS fiber optic branching unit – distributes control signals to up to 4 inverter modules
• Built-in datalogger – stores real-time power stage data for fault tracing and analysis
• DDCS fiber optic interface (V11/V12) for PC connection and parameter upload
• External trigger input/output for synchronized data recording
• DIN rail mountable – compact cabinet installation
• 24V DC external supply – independent of drive power
• Board-level DIP switches for DDCS address configuration
• Original pulled – no repair history

Specifications

Compatibility Note

• Designed for ACS800 MultiDrive systems with PPCS fiber optic network
• Connects RDCU drive control unit (V9/V10) to multiple inverter/supply modules
• Supports up to 4 parallel inverter modules
• DIN rail mountable – requires external 24V DC supply
• Use with Drive Composer or DDCS tools for datalogger upload
• Verify DIP switch address settings (S1/S2) match original unit configuration
• Send system nameplate photo for accurate matching

Quality Assurance

• Original pulled from working system; tested functional with no repair history
• Actual photos sent before shipping
• Test video available upon request
• ESD anti-static packaging