Allen-Bradley 8100 Series Modules: 81001-451-82-R PCB Circuit Board

Name: Allen-Bradley 8100 Series Modules: 81001-451-82-R PCB Circuit Board
Brand: Allen-Bradley

Model: 81001-451-82-R

Brand Allen-Bradley

Series 8100 Series

Model 81001-451-82-R

RFQ-ready model route Obsolete and surplus sourcing Export follow-up by model list

Product Overview

Commercial availability is handled through direct RFQ, model verification and export-oriented follow-up rather than public cart checkout.

Submit RFQ Email This Model

Datasheet Preview

Use attached product manuals when available. If the manual is not public yet, request the full file directly through RFQ.

Request Full Manual

Commercial Path

Use This Page To Confirm The Model, Then Move To RFQ

Product pages on DRIVEKNMS are designed to verify model, brand and series first, then move the buyer into one clean quotation path.

Technical Dossier

Product Details And Specifications

Allen-Bradley 8100 Series Technical Notes

The Allen-Bradley 8100 Series represents a generation of industrial control and I/O modules deployed extensively across heavy-process industries including petrochemical refining, nuclear power generation, pulp and paper manufacturing, and continuous chemical processing. Engineered under Rockwell Automation's legacy programmable controller architecture, 8100 Series boards were integrated into distributed control system (DCS) cabinets and PLC racks where long-cycle uptime and deterministic signal processing were mandatory requirements. Installed base units remain operational in facilities across North America, Europe, and Asia-Pacific, creating sustained demand for verified replacement PCB assemblies and functional equivalents. The 81001-451-82-R is a printed circuit board assembly within this series, used as a core logic or I/O interface subassembly within the 8100 control chassis.

The Evolution of 8100 Series Architecture

The Allen-Bradley 8100 Series was introduced as part of Rockwell's mid-generation programmable controller platform, bridging the gap between early relay-logic replacement controllers and the fully networked ControlLogix/CompactLogix architectures that followed. Early 8100 boards used parallel backplane communication with fixed-address I/O mapping, making them compatible with 1771-series I/O racks and legacy Data Highway (DH+) networks. Subsequent board revisions introduced improved noise immunity, conformal coating for harsh environments, and revised component sourcing to address obsolescence of original ICs.

8100 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified Allen-Bradley 8100 Series PCB assemblies and associated subcomponents. Each entry reflects a distinct functional role within the 8100 control architecture:

81001-451-82-R: Core PCB circuit board assembly, logic/I/O interface subassembly for 8100 chassis
81001-451-80: Base PCB assembly, earlier revision without -R conformal coat specification
81001-451-81: Intermediate revision PCB, revised component layout for thermal management
81001-452-01: Analog input signal conditioning board, 4–20 mA loop interface
81001-452-02: Analog output driver board, isolated 4–20 mA transmitter output
81001-453-10: Digital input module PCB, 24 VDC discrete input interface, 16-channel
81001-453-11: Digital input module PCB, 120 VAC discrete input interface, 8-channel
81001-454-01: Digital output relay board, dry-contact relay output, 8-channel
81001-454-02: Digital output transistor board, 24 VDC sourcing output, 16-channel
81001-455-05: Power supply regulation board, +5 VDC / +24 VDC dual-rail regulator PCB
81001-455-06: Power supply filter board, EMI suppression and inrush current limiting
81001-456-01: Backplane communication interface PCB, parallel bus arbitration logic
81001-456-02: DH+ network interface board, Data Highway Plus protocol transceiver
81001-457-10: CPU processor board, 8100 series main controller logic PCB
81001-458-01: Memory expansion board, EPROM/EEPROM program storage module
81001-459-03: Thermocouple input board, J/K/T type thermocouple signal conditioning, 8-channel
81001-460-01: RTD input board, 100Ω Pt RTD 3-wire interface, 4-channel

Sourcing Hard-to-Find & Obsolete 8100 Series Parts

Allen-Bradley 8100 Series boards have been formally discontinued by Rockwell Automation. Factory support, including spare parts supply and firmware updates, has ended. For facilities operating 8100-based control systems, the only viable procurement path is the certified aftermarket.

Quality Control for the 8100 Series Range

8100 Series PCBs present specific test challenges due to their parallel backplane architecture and mixed analog/digital signal paths. DriveKNMS applies the following test protocol to all 8100 Series boards:

Continue The Model Path

Use system, brand and series routes to compare related published models.

Move from this exact model into the matching system hub, brand archive, model-family archive or lifecycle sourcing route before sending a final RFQ list.