Product Overview

• Part No: VOOB8-B, 12004-106-04, VER：V1.0.0
• Brand: ALSTOM

• Category: VOOB8-B 8-Channel Digital Valve Output ModuleVOOB8-B 12004-106-04 VER：V1.0.0 is a standard Eurocard plug-in remote digital output module designed for ALSTOM SBS serial bus control system. VER:V1.0.0 represents embedded firmware version V1.0.0.The module provides 8 independent digital output channels, specially used to drive solenoid valves, hydraulic actuator control coils, relays and auxiliary switching equipment on site. It receives operation commands transmitted from the main control rack via SBS field bus, converts internal bus signals into field driving signals to realize on-off control of turbine auxiliary valves and interlock loops.Optoelectronic isolation is adopted between field channels and internal bus circuits to isolate surge interference and avoid damage to rack main equipment caused by field circuit faults. Each channel integrates overcurrent and short-circuit protection. Front panel LED indicators display channel working status for rapid on-site inspection and fault troubleshooting. It belongs to discontinued original maintenance spare, widely used for overhaul of thermal power and combined-cycle power plant steam turbine governing systems equipped with SBS serial bus remote I/O.

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Core Features

• 8-channel isolated digital output, dedicated for valve and actuator drive control
• Opto-coupler galvanic isolation between field side and internal bus circuit
• Per-channel overcurrent, short-circuit hardware protection
• Front panel LED status indicators for each channel diagnosis
• Communication interface matching ALSTOM proprietary SBS serial bus
• Standard Eurocard draw-out design supporting rapid on-site replacement
• Reinforced multilayer PCB with gold-plated edge connectors for anti-vibration performance
• Built-in EMI filtering and transient surge protection adapting harsh power station environments

• Passed EMC, vibration and wide-range thermal cycling reliability qualification

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Technical Specifications

• Operating Supply: 24 VDC
• Firmware Version: V1.0.0
• Operating Temperature: -10°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Standard Eurocard rack plug-in printed circuit board

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with ALSTOM control system adopting SBS serial bus remote I/O architecture
• Widely deployed in thermal power plants, combined-cycle power stations and captive power facilities
• Application: On-off control of turbine auxiliary solenoid valves, hydraulic actuators, interlock relays and alarm execution units