ABB P-HC-BRC-PBA2000 Symphony Processor Bus Adapter

ABB P-HC-BRC-PBA20000 Symphony Processor Bus Adapter is the Hnet-connected interface that links an ABB Symphony Plus controller to the Harmony block I/O subsystem, enabling redundant processor bus paths for fault-tolerant operation. This Processor Bus Adapter (PBA) provides the Hnet physical layer, termination, and isolation relays, and is designed to work in pairs to support redundant Hnet buses. It connects to the controller and the Harmony I/O network via the NTMP01 Termination Unit, granting access to two auxiliary serial ports and the station link. Physical specs include 31.08 mm in width, 93.50 mm in height, and 130.50 mm in length; it operates from 5 V DC and typically draws about 0.12 A, with a weight around 140 g. In addition to Hnet, the PBA exposes two auxiliary serial interfaces (RS-232-C/RS-485) and a single RJ-45 Ethernet port (10/100 Mbps) for management and I/O expansion, and it includes a battery to preserve NVRAM data in power interruptions. Widely employed within ABB Symphony Plus architectures, the P-HC-BRC-PBA20000 serves as a dedicated bridge that connects the controller to the Harmony block I/O network, enabling scalable, reliable I/O integration and processor bus redundancy essential for mission-critical control applications.