ABB UNS 0867A-P Modules: HIEE405246R0002 Extension Card I/O

Technical Dossier

Product Details And Specifications

ABB UNS 0867A-P Series: Comprehensive Module Range and Technical Overview

The ABB UNS 0867A-P series is a family of extension and I/O interface cards designed for integration within ABB's UNITROL excitation control systems and AC800M-based distributed control architectures. These modules are deployed across heavy industrial sectors including petrochemical refineries, nuclear power stations, hydroelectric generation facilities, and large-scale chemical processing plants. The HIEE405246R0002 variant specifically functions as an Extension Card I/O, expanding the signal handling capacity of the host controller backplane. ABB's UNITROL platform holds a significant installed base globally, with UNS-series hardware embedded in critical infrastructure that demands long-term parts availability and backward compatibility.

The Evolution of UNS 0867A-P Architecture

The UNS 0867A-P card family originates from ABB's UNITROL 5000 and UNITROL 6000 excitation control platforms, introduced in the late 1990s and refined through the 2000s. Early revisions (R0001) established the baseline I/O expansion framework using parallel backplane communication. The R0002 revision (HIEE405246R0002) introduced improved signal isolation and enhanced EMC compliance to meet IEC 61000 requirements for high-voltage environments. Subsequent hardware generations migrated toward the AC800M controller ecosystem, where UNS-series I/O cards interface via S800 I/O bus protocols. As of 2026, the UNS 0867A-P series is in the mature-to-end-of-life phase. ABB has transitioned new installations to the UNITROL 1020/1500 platform and Symphony Plus DCS. However, the installed base of legacy UNITROL 5000/6000 systems remains extensive, and replacement modules are required for maintenance cycles spanning 10–20 years. DriveKNMS maintains stock and sourcing channels specifically for this lifecycle gap.

UNS 0867A-P Full Catalog & Functionalities (SKU List)

Extension & I/O Cards

• HIEE405246R0002: Extension Card I/O, expands analog/digital I/O capacity on UNITROL backplane
• HIEE405246R0001: Extension Card I/O, first revision, baseline signal expansion module
• HIEE405246R0003: Extension Card I/O, third revision with enhanced EMC shielding
• HIEE300024R0001: I/O Interface Card, digital input/output interface for UNITROL 5000
• HIEE300024R0002: I/O Interface Card, revised digital I/O with improved bus timing

CPU & Controller Modules

• HIEE300889R0001: CPU Module, main processor card for UNITROL 6000 excitation controller
• HIEE300889R0002: CPU Module, revised firmware-compatible processor for UNITROL 6000
• HIEE300912R0001: Controller Card, excitation regulation and AVR function module
• HIEE300912R0002: Controller Card, updated AVR module with expanded parameter memory

Communication & Fieldbus Adapters

• HIEE300748R0001: Communication Adapter, PROFIBUS DP interface for UNITROL systems
• HIEE300748R0002: Communication Adapter, PROFIBUS DP with extended node addressing
• HIEE300756R0001: Fieldbus Module, Modbus RTU/TCP gateway card for UNITROL integration
• HIEE405100R0001: Serial Communication Card, RS-485/RS-232 interface module

Power Supply Modules

• HIEE300763R0001: Power Supply Card, 24 VDC regulated supply for UNITROL backplane
• HIEE300763R0002: Power Supply Card, revised 24 VDC supply with overcurrent protection upgrade
• HIEE405200R0001: Auxiliary Power Module, redundant power feed card for high-availability configurations

Sourcing Hard-to-Find & Obsolete UNS 0867A-P Parts

ABB has formally discontinued active production of the UNS 0867A-P card series. Standard ABB distribution channels no longer carry stock for HIEE405246R0002 and related variants. DriveKNMS operates as a specialist supplier for legacy ABB UNITROL and AC800M hardware, maintaining a dedicated inventory of new-surplus, refurbished, and tested-serviceable UNS-series modules. For plant operators running UNITROL 5000 or 6000 systems under long-term service agreements, DriveKNMS provides: direct replacement sourcing for discontinued HIEE-series cards; cross-reference matching for revision substitutions (e.g., R0001 to R0002 compatibility verification); emergency stock allocation for unplanned outages; and export documentation support for international shipments to power generation and petrochemical facilities.

Quality Control for the UNS 0867A-P Range

Each UNS 0867A-P module processed by DriveKNMS undergoes a structured verification protocol adapted to the specific backplane and bus architecture of the UNITROL platform. Testing procedures include: visual inspection of PCB traces, connector pins, and EPROM/EEPROM components for corrosion or mechanical damage; powered functional test using a UNITROL-compatible backplane test rig to verify I/O channel response, signal isolation integrity, and bus communication handshake; firmware revision verification to confirm compatibility with target UNITROL 5000/6000 controller versions; burn-in cycle under simulated load conditions to screen for latent component failures; and final documentation of test results with each shipped unit. Modules that do not pass all stages are quarantined and not offered for sale.