Description
ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 Digital Output Module Product Description
Product Overview
ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 is a high-reliability digital output module designed for ALSTOM railway signaling, transportation control, and industrial automation systems. As a key I/O interface component within ALSTOM’s modular control architecture, ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 provides isolated digital output signal processing, enabling the control system to safely and reliably operate external field devices such as relays, indicators, actuators, signaling equipment, and auxiliary control circuits. The module is mainly applied in safety-critical environments where stable switching performance, electrical isolation, and long-term availability are required.
The ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 adopts a modular plug-in design and is integrated into ALSTOM signaling and control racks. The module receives commands from the host controller through the internal rack bus, processes control instructions, and provides multiple isolated output channels to field equipment. Its design improves system flexibility by allowing individual I/O modules to be replaced or expanded without major changes to the overall control architecture.
As part of the ALSTOM 12004 series automation platform, ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 plays an important role in railway signaling systems, transportation infrastructure automation, and industrial control applications. With its compact structure, channel-level status monitoring, and robust industrial design, ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 helps improve system safety, reduce maintenance complexity, and extend the service life of existing ALSTOM control installations.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | VOOB8-B 12004-106-04 VER V1.0.0 |
| Manufacturer | ALSTOM |
| Product Type | Digital Output Module / Electronic Output Interface Module |
| Product Series | ALSTOM 12004 Control and Signaling Series |
| Main Function | Digital output signal control and field interface |
| Output Channels | 8 isolated digital output channels (typical configuration) |
| Output Type | Optically isolated digital output |
| Field Voltage | 24 VDC industrial control signal (typical) |
| Communication Interface | Internal rack backplane communication |
| Installation Method | Plug-in rack mounting |
| Front Interface | Front connector field wiring interface |
| Status Indication | Channel LED status indication |
| Power Supply | Rack backplane supplied power |
| Power Consumption | Low-power modular design |
| Operating Temperature | Industrial railway control environment |
| Protection Function | Electrical isolation and output protection |
| Application Field | Railway signaling, transportation automation, industrial control |
Main Features and Advantages
Reliable digital output control:
The primary function of ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 is to provide dependable digital output control between the automation controller and external devices. The module converts internal control commands into field-level switching signals, allowing accurate operation of signaling devices, relays, indicators, and other controlled equipment. This reliable signal transmission capability is essential for railway and industrial systems requiring continuous operation.
Electrical isolation and protection:
A major advantage of ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 is its isolated output architecture. The isolation design separates the sensitive controller electronics from external field circuits, reducing the influence of electrical interference, voltage fluctuations, and wiring faults. This improves system stability and helps protect the control platform from field-side disturbances.
Modular rack-based architecture:
ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 uses a modular plug-in design compatible with ALSTOM control racks. The modular structure allows engineers to quickly install, replace, and maintain individual output modules, reducing system downtime during troubleshooting and maintenance activities.

VOOB8-B
Channel-level monitoring capability:
The module provides status indication for output channels, helping maintenance personnel quickly identify operating conditions and locate potential faults. The diagnostic visibility of ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 improves maintenance efficiency and reduces troubleshooting time in complex signaling systems.
High reliability for safety-related applications:
Railway signaling and transportation control systems require components with high availability and predictable performance. ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 is designed for industrial and transportation environments, supporting stable operation under vibration, temperature variation, and continuous-duty conditions.
Easy lifecycle maintenance:
Many railway operators continue using established ALSTOM signaling platforms due to their reliability and long service life. ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 provides an effective replacement and maintenance solution, helping operators preserve existing infrastructure while maintaining operational reliability.
Application Areas
Railway Signaling Systems:
ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 is primarily used in railway signaling applications where reliable digital output control is required. It can control external signaling equipment, relay interfaces, indication systems, and trackside control devices.
Metro and Urban Rail Automation:
Modern metro systems require highly reliable automation components for train control and infrastructure management. ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 supports digital output functions in station control systems, signaling cabinets, and wayside equipment.
Railway Interlocking Systems:
In interlocking applications, accurate signal transmission is essential for safe train movement management. ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 provides dependable output interfaces between logic controllers and field equipment.
Industrial Control Applications:
Beyond railway applications, ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 can be applied in industrial automation systems requiring isolated digital outputs, modular I/O expansion, and reliable field device control.
Railway System Upgrade Projects:
For existing ALSTOM installations, ALSTOM VOOB8-B 12004-106-04 VER V1.0.0 serves as an important spare and replacement module. It enables maintenance teams to restore system functions quickly while reducing modernization costs.
Related Products
- ALSTOM VIIB16-C 12011-105-00 V1.0.0 – Digital input module from the same ALSTOM signaling family, used for field signal acquisition.
- ALSTOM I/OBE2 12004-104-00 V1.0.0 – Safety I/O module for distributed control and signaling applications.
- ALSTOM I/OBUS2 12004-103-01 VER V1.2.0 – I/O bus interface module providing communication between I/O modules and controllers.
- ALSTOM VPS 12004-102-03 V1.0.0 – Power supply module providing stable power for ALSTOM control racks.
- ALSTOM EPSD-0603 – Rack power and signal distribution module used in industrial control systems.
- ALSTOM CMP1838 TRVCO62345000 CP00005202 – Control module used in ALSTOM legacy automation systems.
- ALSTOM POS1846 TRVC062333000 CP00000310 – Position detection and control module.
- ALSTOM DSI1817 TRVC062335000 CP00003934 – Digital input interface module for ALSTOM systems.
