Description
ABB 086444-005 — Direct Optical Fiber Board
Product Overview
The ABB 086444-005 (also known as MPRC 086444-005) is a direct optical fiber circuit board manufactured by ABB for its Bailey InfiNet 90/AC800M DCS (Distributed Control System) platform. It serves as a critical communication interface for high-speed, reliable data transmission between controller racks and I/O clusters in industrial automation environments.
ABB MPRC 086444-005 Direct Fiber Optic Communication Card QSC System
Model Number Breakdown
| Field | Meaning |
|---|---|
| 086444 | ABB module part number — direct optical fiber board |
| 005 | Revision/variant level |
| MPRC | Module Prefix — indicating a communication/I/O related board |
| Cross-reference | Also listed as 086349-002 in some ABB documentation |
Core Functions
Fiber Optic Communication — The board provides one fiber optic transmit port and one receive port for the ABB Module Bus network. This enables high-speed, EMI-immune data transmission between controller units (e.g., CI801, CI840/CI840A) and remote I/O clusters (e.g., TB820, TB840 series).
Module Bus Expansion — Acts as a direct fiber link for extending the Module Bus network, connecting:
- CI801 controllers → via TB806 → TB842 (this board)
- CI840 / CI840A controllers → via TU847 → TB842
Dual Configuration Support — Supports both:
- Simple (ring) topology — fiber nodes connected in a loop
- Duplex (line) topology — fiber nodes connected in a daisy-chain line
High-Speed Data Transmission — Equipped with 10 Mbit transmitters/receivers on the fiber link, supporting large-volume data transfer suitable for real-time process control.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Fiber Interface | 1× TX (transmit), 1× RX (receive) |
| Data Rate | 10 Mbit/s |
| Fiber Types Supported | Plastic fiber (POF) and Hard Clad Silica (HCS) |
| Bus Protocol | ABB Module Bus |
| Power Supply | 24 V DC via Module Bus |
| Current Distribution | Module Bus powered |
| Connector Type | ABB proprietary optical connector |
| Protection Rating | IP20 (per IEC 60529) |
| Device Class | Class I (per IEC 60536) |
| Operating Temperature | -25°C to +70°C (storage); 55°C max horizontal / 40°C max vertical (operating) |
| Dimensions | Width: 17.6 mm × Height: 56.7 mm × Depth: 42.3 mm |
| Weight | 90 g (0.20 lb) |
| Certifications | CE, RoHS (2011/65/EU), WEEE (2012/19/EU) |
| Hazardous Location | Class 1 Zone 2, ATEX Zone 2 |
| Marine Certificates | ABS, BV, DNV-GL, LR |
