The Alstom SCN804 D Measure Interface Module is a specialized industrial control module designed for integration with PLC-based automation systems in power generation, process control, and industrial automation applications. Manufactured by Cegelec DEI under the Alstom brand, this measurement interface module serves as a critical bridge between field sensors and the control system, providing signal conditioning, isolation, and conversion functions that enable accurate and reliable process monitoring.

Alstom, a global leader in power generation and rail infrastructure, has a long history of producing reliable industrial control equipment through its various subsidiaries including Cegelec DEI. The SCN804 D module represents the robust, field-proven design philosophy that has made Alstom control systems a trusted choice for critical infrastructure applications where equipment failure is not an option.

Auto2mation is pleased to offer this used Alstom SCN804 D measure interface module, professionally inspected and ready for deployment in your automation system. As with all our industrial automation products, this module comes with our 30-day warranty and free worldwide shipping, ensuring that you receive quality equipment that meets your operational requirements.

Key Features & Specifications

The Alstom SCN804 D measure interface module is engineered to provide reliable signal interface functions in demanding industrial environments. Here are the key features and specifications that define this essential automation component:

• Cegelec DEI Manufacturing: Produced by Cegelec DEI, a respected name in industrial electronic systems and a subsidiary of the Alstom group, ensuring European engineering quality and adherence to rigorous manufacturing standards.
• Measurement Interface Function: The SCN804 D module provides measurement interface capabilities for PLC systems, handling signal conditioning, isolation, and conversion between field sensors and the control processor.
• Multiple Internal References: The module carries several internal reference numbers including 063015174, L0D426804, 3BE700137B, and 3BE700139B, providing comprehensive traceability within the Alstom and Cegelec parts management systems.
• Compact Module Design: At just 2.450 Kg, this lightweight module installs easily into standard PLC racks or mounting systems, minimizing the physical footprint in crowded control panels.
• CE Marked: The module bears the CE marking, confirming compliance with European safety, health, and environmental protection standards for products sold within the European Economic Area.
• Industrial-Grade Construction: Built to withstand the harsh conditions typical of industrial control applications including temperature extremes, electrical noise, vibration, and humidity.

Technical Specifications

Specification	Details
Manufacturer	Cegelec DEI (Alstom Group)
Brand	Alstom
Model	SCN804 D
Part Type	Measure Interface Module / PLC Module
Condition	Used / Refurbished
Internal Reference	063015174
Board Reference	L0D426804
Alstom Part Numbers	3BE700137B, 3BE700139B
Certification	CE Marked
Weight	2.450 Kg

Applications & Use Cases

The Alstom SCN804 D measure interface module is deployed across a diverse range of industrial automation applications where reliable signal interfacing between field devices and control systems is essential. Its robust design and proven reliability make it suitable for:

Power Generation Control Systems

Fossil fuel power plants, hydroelectric facilities, and nuclear power stations utilize Alstom control systems for turbine control, generator monitoring, boiler control, and auxiliary systems. The SCN804 D module provides the sensor interface functions necessary for monitoring temperature, pressure, flow, vibration, and other critical process parameters in these demanding environments.

Industrial Process Automation

Chemical processing plants, oil refineries, cement plants, and steel mills rely on PLC-based automation systems for process control and monitoring. Measurement interface modules like the SCN804 D connect field instruments to the control system, providing signal conditioning and isolation that ensures accurate measurements despite the electrical noise common in industrial environments.

Water Treatment and Distribution

Municipal water treatment plants, wastewater treatment facilities, and industrial water systems use measurement interface modules to connect flow meters, level sensors, pressure transmitters, and analytical instruments to the central control system. Reliable signal interfacing is essential for maintaining water quality and ensuring regulatory compliance.

Rail and Transportation Infrastructure

Alstom's rail division produces signaling, control, and power systems for railway networks worldwide. The SCN804 D module and similar components may be found in railway signaling systems, traction power control, and station automation equipment where reliable operation is essential for passenger safety.

Marine Automation Systems

Commercial vessels and offshore platforms use PLC-based automation systems for machinery monitoring, alarm management, and process control. The SCN804 D module's robust construction and reliable performance make it suitable for the challenging marine environment where temperature, humidity, and vibration extremes are common.

Why Choose the Alstom SCN804 D Module

When sourcing spare parts for your Alstom or Cegelec control system, the SCN804 D module from Auto2mation offers several important advantages:

Proven Field Reliability

Alstom and Cegelec control modules have been deployed in critical infrastructure applications for decades, accumulating a track record of reliable operation that newer, less-proven products cannot match. When your process control system must operate continuously without failure, choosing field-proven components is a sound engineering decision.

Exact Replacement Compatibility

The SCN804 D module provides direct replacement compatibility with existing installations, eliminating the need for system reprogramming, wiring modifications, or engineering redesign. This minimizes downtime during maintenance and reduces the total cost of replacement compared to upgrading to newer, potentially incompatible systems.

Cost-Effective Spare Parts Sourcing

As original equipment manufacturers discontinue support for older product lines, sourcing genuine spare parts becomes increasingly difficult and expensive. Auto2mation specializes in locating and supplying hard-to-find industrial automation components, providing cost-effective access to the spare parts you need to keep your systems operational.

Compatibility & Integration

Proper integration of the SCN804 D module requires attention to system compatibility and installation requirements:

• System Compatibility: Verify that the SCN804 D is the correct module for your specific Alstom or Cegelec control system. Consult your system documentation, parts manual, or contact a qualified automation engineer to confirm compatibility before ordering.
• Rack and Chassis Requirements: The module is designed for installation in specific Alstom/Cegelec rack or chassis systems. Verify that the target rack has available slots and that the backplane connections are compatible with the SCN804 D module.
• Wiring and Terminal Connections: Document all wiring connections before removing a failed module to ensure correct reconnection of the replacement. Follow proper lockout/tagout procedures and verify that power is removed from the rack before installing or removing modules.
• Firmware and Software: Some modules may require specific firmware versions or software configurations. Verify that the replacement module's firmware is compatible with your system's software version.
• Environmental Conditions: Verify that the installation environment meets the module's rated operating temperature, humidity, and vibration specifications as documented in the system technical manual.

Maintenance & Support

Auto2mation provides comprehensive support for the Alstom SCN804 D module and all the industrial automation products we sell. Our 30-day warranty covers defects in materials and workmanship, and our free worldwide shipping ensures that your spare parts arrive safely and on time.

For control system maintenance, we recommend that module replacement be performed by qualified automation technicians familiar with PLC systems and industrial electronics. Proper anti-static handling procedures should be followed, and system backup procedures should be completed before any control system modifications.

Our technical support team can provide guidance on installation procedures, troubleshooting steps, and spare parts inventory recommendations. We understand that control system downtime can be extremely costly, and we are committed to helping you maintain operational continuity.

Frequently Asked Questions

Q1: What is the condition of this Alstom SCN804 D module?

This Alstom SCN804 D measure interface module is offered in used condition. It has been visually inspected and electrically tested to verify proper operation. Auto2mation provides a 30-day warranty and free worldwide shipping on this module.

Q2: How do I know if this module is compatible with my system?

Verify compatibility by comparing the part number, reference numbers (3BE700137B, 3BE700139B), and board reference (L0D426804) with your system's documentation. If you are uncertain, consult your system manual or contact a qualified automation engineer before ordering.

Q3: What type of measurements does this interface handle?

The SCN804 D is a general-purpose measurement interface module designed for industrial PLC systems. Specific measurement capabilities depend on the module configuration and the host system programming. Consult your system documentation for detailed information on supported input types and measurement ranges.

Q4: Can I install this module myself, or do I need a technician?

Module installation should be performed by qualified personnel familiar with PLC systems, industrial electronics, and safety procedures. Proper lockout/tagout procedures must be followed, and anti-static handling precautions should be observed. If your facility does not have qualified personnel, contact Auto2mation for assistance finding qualified service providers.

Q5: Is programming or configuration required after installation?

Depending on your system configuration, some programming or parameter configuration may be required after module installation. Consult your system documentation or contact a qualified automation engineer for guidance on configuration procedures.

Q6: What warranty and shipping does Auto2mation provide?

Auto2mation provides a 30-day warranty on this used module covering defects in materials and workmanship. Free worldwide shipping with appropriate protective packaging is included with every order.

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