ABB 3BHE031734R320 UNS0881A-P VME Interface Board

Product Description

The 3BHE031734R320 (UNS0881A-P) is an ABB VME bus interface board for the ABB INFI 90 / Symphony Plus legacy power control system. It serves as communication gateway between the VME backplane and external field modules, handling data exchange, signal buffering and protocol conversion for turbine, generator and excitation control cabinets. It transfers real-time control data, status feedback and fault messages between the main processor and peripheral I/O boards. This is a conformal-coated Eurocard board designed for power plant high EMC environments.

Features

• Part No: 3BHE031734R320, alias UNS0881A-P
• VME bus interface board, compatible with ABB Symphony / INFI90 rack system
• High-speed data forwarding between main controller and remote I/O modules
• Onboard watchdog, signal isolation and fault self-diagnosis circuit
• Front panel LED indicators for power, run, communication and fault status
• Conformal coating for humidity, dust and corrosion resistance
• Standard VME Eurocard form factor, plug-in rack mounting
• Wide operating temperature and high anti-interference for power station cabinets
• CE certified for power automation control

Applications

• Thermal power plant ABB Symphony DCS control cabinet
• Gas turbine and steam turbine control & protection system
• Generator excitation control and auxiliary interlock system
• Oil & gas, chemical plant legacy ABB INFI90 system maintenance
• Power plant retrofit, spare replacement and emergency stock

FAQ

Q: What is the alias of 3BHE031734R320?
A: The alias model number is UNS0881A-P.

Q: Which ABB system is this board for?
A: It belongs to the ABB Symphony (INFI90) distributed control platform.

Q: Is this module still in production?
A: This legacy Symphony hardware is end-of-life, only available as surplus, refurbished and tested spare parts.

Q: Can it be hot swapped?
A: It supports hot swap operation in the redundant rack configuration under normal system conditions.