Description

AKB331‑M050 Control Bus Interface Module

Technical Specifications

• Product Model: AKB331‑M050
• Brand: Yokogawa
• Warranty: One Year
• Input Voltage: Backplane power from DCS rack
• Operating Temperature: 0 °C ~ +55 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Bus communication cycle ≤2 ms
• Protection Class: IP20 rack‑mount interface module
• Accuracy Class: DCS control‑bus communication grade
• Output Frequency: Not applicable
• Rated Current: 0.65 A backplane power consumption
• Function: ESB bus interface for remote I/O expansion
• Communication: ESB bus high‑speed field‑control‑bus interface
• Diagnostics: Link status monitoring, communication error counter, front‑panel LED indicators
• Hot‑Swap: Supports online hot‑swap in redundant DCS configuration
• System Compatibility: Yokogawa CENTUM VP DCS system
• Certifications: CE, cULus
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.42 kg
• Dimensions: Standard CENTum VP single‑slot module footprint
• 

Product Overview

AKB331‑M050 is an ESB bus interface module for Yokogawa CENTUM VP distributed control system. It establishes high‑speed ESB bus communication between main control racks and remote I/O racks, expanding system I/O capacity for large‑scale process plants. Real‑time bus‑link diagnostics monitor communication quality and report link failures to DCS operator station. Online hot‑swap capability reduces plant downtime during module replacement. End‑of‑life DCS interface hardware; available as refurbished and new‑old‑stock spare parts for petrochemical‑plant and power‑plant DCS‑system overhaul.

Application Notes

‑ Used for ESB bus remote‑rack connection within CENTUM VP architecture. ‑ Observe ESB bus cable length limits specified in Yokogawa hardware manual. ‑ ESD protection required during installation and replacement. ‑ Typical deployment: refineries, chemical‑plants, power‑generation DCS remote‑I/O spare‑part stocking.