The ALSTOM AL129A is a high-performance communication module designed for industrial automation systems, particularly in power generation and distribution applications. As part of ALSTOM’s trusted control product line, the AL129A serves as a critical interface between PLC/DCS systems and field devices, supporting multiple industrial protocols including IEC 60870-5-101/104 and Modbus.
Engineered for reliability in harsh environments, the ALSTOM AL129A features galvanic isolation and wide operating temperature range (-40°C to +70°C). Its compact design allows seamless integration into control cabinets while maintaining robust communication stability even in electromagnetic interference-heavy environments.
Technical Specifications
Parameter NameParameter ValueModelAL129AManufacturerALSTOMTypeIndustrial Communication ModuleProtocols SupportedIEC 60870-5-101/104, Modbus RTU/TCPIsolation Voltage1500V DCOperating Temperature-40°C to +70°CPower Supply24V DC ±15%Data RateUp to 10Mbps (Ethernet)Dimensions120mm × 80mm × 35mmWeight450gCertificationsCE, UL, ATEX Zone 2
Key Features and Advantages:
Protocol versatility: The AL129A supports legacy and modern protocols simultaneously, enabling seamless integration with both older field devices and modern SCADA systems. Its dual-channel design allows redundant communication paths for critical applications.
Robust construction: With IP65-rated enclosure and vibration-resistant components, the AL129A maintains stable operation in demanding industrial environments. The module’s diagnostic LEDs provide instant status visibility for quick troubleshooting.
Application Areas:
- Power Substations: Gateway for RTU-to-control center communications
- Water Treatment Plants: Integration of legacy devices with modern DCS
- Oil & Gas: Field device networking in hazardous areas
- Manufacturing: Machine-to-PLC connectivity in production lines
Related Products:
- AL129B: Enhanced version with PROFIBUS support
- AL130A: Higher-density communication gateway
- AL128A: Compact protocol converter
- AL129A-R: Ruggedized version for extreme environments
- AL129A-S: Security-enhanced model with firewall
Installation and Maintenance:
Installation preparation: Verify voltage compatibility and ensure proper grounding before mounting the AL129A. Allow minimum 50mm clearance around the module for ventilation.
Maintenance recommendations: Perform annual inspections of all connections and firmware updates. The module’s built-in self-diagnostics can be accessed via configuration software for preventive maintenance.
Product Assurance:
ALSTOM provides 12-month warranty coverage for the AL129A, including global technical support and replacement services. Each unit undergoes rigorous protocol conformance testing and environmental stress screening to ensure long-term reliability.
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