Description

YOKOGAWA AIP521 S9950DB‑01

1. Product Title

YOKOGAWA AIP521 S9950DB‑01 – CENTUM VP DCS Control Bus Coupler Module

2. Product Overview

The AIP521 S9950DB‑01 is a control bus coupler module for Yokogawa CENTUM VP distributed control system, with assembly number S9950DB‑01. It establishes high‑speed V‑NET communication link between main DCS control station and remote I/O racks, enabling real‑time bidirectional process‑data transmission for distributed field I/O nodes. It supports redundant communication architecture to eliminate single‑point‑of‑failure risk for critical process automation. This module forms core connectivity infrastructure for large‑scale DCS installations, solving reliable long‑distance I/O interconnection for refinery, chemical and power‑plant process control systems.

3. Technical Specifications

• Brand: YOKOGAWA
• Model: AIP521 S9950DB‑01
• Warranty: One Year
• Condition: 100% New & Original
• Assy No: S9950DB‑01
• Function: V‑NET control bus coupler for CENTUM VP DCS
• Communication Protocol: Yokogawa V‑NET
• Power Supply: 24 VDC from DCS backplane
• Power Consumption: < 4 W
• Operating Temp: -20 °C ~ +70 °C
• Mounting: DCS rack‑mounted
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4. Application Scenarios

• Refinery DCS Control Systems: Bus coupler linking central control station to remote I/O racks spread across large refinery process units.
• Chemical Plant Process Automation: Communication gateway for connecting reactor‑area remote I/O cabinets to main CENTUM VP control system.
• Power‑Plant DCS Platform: High‑reliability link for turbine‑auxiliary and boiler‑system distributed I/O nodes.