YOKOGAWA AIP578 AIP591 Optical link transceiver module
The Yokogawa AIP578 is a high-reliability Optical Link Transceiver Module designed for the CENTUM CS and CENTUM VP Distributed Control Systems (DCS).
It serves as a critical communication bridge, converting electrical signals into optical signals to allow for long-distance, interference-free data transmission between RIO (Remote I/O) nodes and the main control stations.
1. Introduction
In large-scale industrial plants, I/O nodes are often located kilometers away from the central Field Control Station (FCS).
The AIP578 facilitates this by using fiber optic technology. It eliminates the risk of electrical noise (EMI) and ground potential differences that often plague long-distance copper wiring, ensuring the integrity of the process data being transmitted.
2. Technical Parameter Table
| Feature | Specification |
| Type | Optical Link Transceiver (Electrical to Optical) |
| Compatible Systems | CENTUM CS, CENTUM VP |
| Network Interface | RIO (Remote I/O) Bus / V net |
| Transmission Media | Fiber Optic Cable (Multi-mode/Single-mode depending on configuration) |
| Data Rate | System standard RIO speed (Optimized for real-time control) |
| Weight | Approximately 0.40 kg (Modual only) to 1.0 kg (with housing) |
| Style Code | S1 (Standard Style) |
| Power Supply | Internal (Supplied via the RIO bus backplane) |
| Safety Standard | Complies with IEC 61010-1 (Industrial Safety) |
3. Product Advantages and Features
Long-Distance Connectivity: Supports communication over distances much greater than traditional copper cables (up to several kilometers).
Noise Immunity: Total immunity to electromagnetic interference (EMI) and radio frequency interference (RFI) due to the use of optical fiber.
Galvanic Isolation: Provides complete electrical isolation between different plant sections, protecting sensitive hardware from lightning strikes or power surges.
Real-time Diagnostics: Features built-in status LEDs to indicate link health, data transmission, and hardware faults.
Hot-Swappable: Designed to be replaced without shutting down the entire system, ensuring high plant availability.
AIP578
4. Application Cases
Petrochemical Refineries: Connecting remote tank farm sensors to the central control room.
Offshore Platforms: Used where space is tight and electrical isolation between decks or subsea modules is mandatory.
Power Plants: Linking high-voltage transformer monitoring systems to the control station without risk of electrical interference.
Mining Operations: Spanning long distances across conveyor systems and processing facilities.
AIP578
5. Related Models & Same Series
The AIP578 is part of the broader AIP series of communication and coupler modules used in Yokogawa DCS architectures.
Other Models in the Same Series
AIP571: A standard Electrical Transceiver for RIO bus connections (shorter distances).
AIP552: V net Coupler module for connecting different control domains.
AIP830 / AIP826: Specialized Operation Keyboards for the Human Interface Station (HIS).
AIP512: RIO Bus connection/coupler module for high-speed local I/O expansion.
Related System Components
FCS (Field Control Station): The primary controller that processes the data sent via the AIP578.
RIO Bus Cables: The specialized cables used to daisy-chain the modules.
Fiber Optic Converters: Often used in pairs with the AIP578 at both ends of a long-distance link.
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