ABB MPRC 086444-005 | PWA MPRC | Direct Fiber Optic Board

The ABB MPRC 086444-005 is an ABB PWA MPRC with Direct Fiber Optic interface. ABB’s own product record identifies the catalog description as “PWA,MPRC,W/DIRECT FIBER” and the long description as “PWA,MPRC,W/DIRECT FBR OPT.”

This board is associated with ABB legacy QSC / HKQCS control-system hardware and is used for direct fiber-optic communication within the associated automation architecture. Secondary inventory records also identify it as a direct-fiber MPRC board and list 086444-105 as an older/replaced product ID.

🔧 Key Features

ABB MPRC printed circuit board
Direct fiber-optic interface
ABB QSC / HKQCS system application
Legacy industrial control hardware
Suitable for maintenance and replacement
Compact PCB construction
Designed for optical communication within compatible ABB systems

📋 Product Datasheet

Parameter	Specification
Brand	ABB
Model	MPRC
Part Number	086444-005
Product Type	PWA / PC Board
ABB Description	PWA,MPRC,W/DIRECT FIBER
Long Description	PWA,MPRC,W/DIRECT FBR OPT
System / Catalog	HKQCS Parts Online
Application	ABB QSC / Industrial Control System
Communication	Direct Fiber Optic
Fiber Interface	Direct optical interface
Input/Output	System-dependent
Power Supply	System-dependent
Mounting	Compatible ABB rack/system
Frame Size	ABB catalog: Spare Parts
Gross Weight	Approx. 0.4 kg
Country of Origin	United States / China listed in ABB catalog
Lifecycle	Discontinued / legacy spare part

ABB’s catalog record lists 0.4 kg gross weight, customs tariff 85176200, and identifies the item as a spare part.

⚡ Functional Description

The MPRC board provides a direct fiber-optic interface for the associated ABB control system. Optical communication is useful in industrial environments where electrical noise, ground-potential differences, or long communication distances can make copper interfaces less suitable.

The exact fiber type, connector configuration, transmission rate, and system protocol should be verified against the installed QSC/HKQCS system rather than assumed from the MPRC designation.

🏭 Typical Applications

ABB QSC control systems
Industrial process control
Power-generation automation
Legacy ABB automation installations
High-noise industrial environments
Fiber-optic control-system communication
Maintenance and retrofit projects

🔌 Installation & Configuration

Verify MPRC 086444-005 on the board label.
Confirm the original ABB QSC/HKQCS system.
Check hardware revision before replacement.
Record the existing fiber connections.
Inspect optical connectors for contamination or damage.
Install the board in the correct rack position.
Reconnect the fiber-optic interfaces.
Verify system power and grounding.
Check communication diagnostics.
Perform system-level functional testing.

🛠️ Commissioning Checklist

Confirm part number 086444-005
Verify MPRC board revision
Inspect PCB and connectors
Check fiber-optic connections
Confirm optical link status
Verify controller communication
Check system diagnostics
Confirm configuration compatibility
Perform communication testing
Complete operational testing

⚠️ Important Identification Note

The eBay listing calls the item an “ABB PLC CARD,” but ABB’s own product information gives a more specific identification: PWA,MPRC,W/DIRECT FIBER.

There are also secondary listings describing it as a Direct Fiber Optic Communication Card, which is consistent with ABB’s catalog description.

I would therefore use “MPRC Direct Fiber Optic Board” in the product title rather than simply “PLC Card.”