ALSTOM AL129A POWER SUPPLY MODULE

The AL129A POWER SUPPLY MODULE is designed to meet power supply requirements in complex industrial environments, with its core function being converting input alternating current (AC) into isolated direct current (DC) voltage outputs required by the system. Its compatibility scope covers systems such as the Alstom CE 2000 control system and the AL SPA series. Within the Alstom CE 2000 control system, it provides stable power support for the normal operation of controllers, I/O modules, and other communication modules—serving as a critical component for maintaining the stable and reliable operation of the entire automation system. Much like the human heart continuously supplying energy to various organs, it ensures the coordinated operation of all system components.

• Voltage Range: It features an extremely wide input voltage adaptability, supporting a voltage range of 96VAC to 253VAC (achieved through chopper converter technology). This characteristic enables it to operate stably under different regional and power supply conditions—whether in old industrial areas with frequent voltage fluctuations or overseas factories with different power supply standards, the AL129A can handle them with ease, significantly enhancing the device’s versatility and adaptability.

• Rated Operating Voltage: The typical rated operating voltage is 230VAC. At this voltage, the module can deliver optimal performance, providing a stable and reliable power input foundation for the system.

• Output Voltage and Current: It can output two types of isolated DC voltages: 5VDC and 12VDC, enabling independent power supply for different circuit modules and reducing mutual interference. Among them, the 5V output can provide a maximum current of 10A, which can meet the high 5V power demand of devices such as digital logic circuits and some small sensors; the 12V output can provide a maximum current of 4A, suitable for driving devices requiring 12V power, such as small relays and certain types of actuators. This multi-voltage and high-current output capability allows flexible adaptation to the power needs of various industrial devices, greatly enhancing its applicability in complex automation systems.

• Frequency Response: The typical frequency response is 60kHz. This frequency characteristic ensures that the power supply module can quickly respond to and adjust outputs under rapidly changing load demands, maintaining stable voltage supply and preventing equipment operation from being affected by current fluctuations. It is particularly suitable for precision control equipment with high requirements for power supply stability.

• Power Consumption and Energy Efficiency: The typical power consumption is 120W. While efficiently supplying power to the system, it achieves high power conversion efficiency through optimized circuit design and component selection, reducing energy waste. In line with the current trend of energy conservation and emission reduction in the industrial sector, it helps enterprises effectively lower electricity costs during long-term operation.

• Overcurrent Protection: When the output current exceeds the rated value, the internal overcurrent protection circuit of the module acts quickly to automatically cut off or limit the current output. This prevents the module itself and connected devices from being burned due to excessive current, avoiding the expansion of faults—much like a "fuse" in a circuit that protects the entire system at critical moments.

• Overvoltage Protection: Once abnormal voltage rise exceeding the set threshold is detected at the output, the overvoltage protection function is activated immediately to stabilize the voltage or cut off the output. This protects downstream devices from the impact of excessively high voltage, ensuring the safety of electronic components and extending the service life of the equipment.

• Overheating Protection: A built-in temperature sensor continuously monitors the internal temperature of the module. When the temperature rises excessively due to long-term high-load operation or poor heat dissipation, the overheating protection mechanism is triggered—it either reduces the output power or stops operation, while activating an alarm signal to remind maintenance personnel to investigate and handle the issue promptly. This prevents performance degradation or even damage to the module caused by overheating.

It has an operating temperature range of -20°C to +60°C, allowing it to adapt to extreme temperature environments such as areas near high-temperature industrial furnaces and cold outdoor mines. In terms of humidity, it can operate normally within a certain humidity range, unaffected by damp mist commonly found in industrial sites. Additionally, through rational circuit layout and shielding design, it possesses strong anti-electromagnetic interference capabilities. Even in industrial environments filled with strong electromagnetic interference sources (such as numerous motors and frequency converters), it can still stably output clean power, ensuring the normal operation of the system.

It supports both single-power and redundant configuration modes. In the single-power mode, the module independently supplies power to the system, which is suitable for scenarios with relatively low requirements for power supply continuity and high cost sensitivity. In the redundant configuration, two AL129A modules can work simultaneously; if one module fails, the other seamlessly takes over all power supply tasks to ensure uninterrupted system operation. This is crucial for critical industrial processes that cannot be easily shut down (such as chemical production and power supply), significantly improving the availability and reliability of the system.