ALR121-S50 Advantages
Yokogawa ALR121-S50 provides flexible multi-device serial interconnection solutions for Yokogawa Centum VP series control systems. Stable operating performance. Dual independent communication channels support simultaneous connection of two groups of external serial equipment, baud rate adjustable from 1200bps to 115.2kbps, maximum RS485 transmission distance up to 1200m, built-in Modbus RTU slave protocol realizes seamless docking with mainstream industrial peripheral equipment, fully meeting long-term uninterrupted multi-subsystem data collection and interconnection demands of industrial production lines. Strong environmental adaptability. Reinforced industrial PCB substrate and built-in multi-stage isolation circuits support 24-hour continuous operation under humid, dusty, high-temperature and strong electromagnetic interference industrial scenarios. Excellent anti-interference capability. Complete channel-to-channel galvanic isolation structure blocks power grid surge and cable crosstalk interference, matched with shielded dedicated communication cables to eliminate serial data dislocation and communication break caused by field EMI noise. Perfect system compatibility. Standard ESB bus gold finger interface fully matches all mainstream Yokogawa Centum VP series functional modules including FCS CPU boards, ESB bus coupler modules, analog/digital I/O modules and rack power supply units, realizing seamless serial peripheral data linkage inside the control rack. Convenient maintenance design. Compact plug-in structure equipped with communication running, data transmission and fault alarm indicator lights, supports online hot swap maintenance without system shutdown, simplifies on-site serial cable wiring inspection, communication parameter configuration and rapid spare parts replacement. Industrial durable reliability. Manufactured strictly in accordance with Yokogawa industrial DCS manufacturing standards, built-in serial link disconnection and abnormal communication self-diagnosis function, fully satisfying long-term stable multi-channel serial data transmission operation demands of field Centum VP control systems.
ALR121-S50 Applications
Power industry. Used for frequency converter, generator protection relay and online analytical instrument serial data collection of thermal power plant Yokogawa Centum VP FIO control cabinet equipment. Petrochemical industry. Applied to Modbus communication docking with refining furnace analyzers, weighing instruments and auxiliary PLC of large oil refining, coal chemical and fine chemical production facilities equipped with Centum VP distributed control system. Industrial automation. Suitable for multi-type serial peripheral data interconnection of pharmaceutical, metallurgical and semiconductor automatic production line Centum VP FIO racks. Energy equipment control. Acts as core serial communication integration component to realize data exchange between central DCS and field intelligent equipment of thermal power, oil & gas and renewable energy facilities with Centum VP configuration. Factory process control. Cooperates with various Yokogawa Centum VP CPU boards, bus coupler modules and analog input modules to build complete multi-peripheral industrial data interconnection network.
ALR121-S50 Certifications & Compliance
Yokogawa ALR121-S50 conforms to international industrial control safety and quality standards. It passes EMC electromagnetic compatibility test and industrial performance certification, and complies with RoHS environmental protection regulations as well as power, petrochemical and chemical industry application specifications. All Serial Communication Modules are 100% New & Original parts. Each product undergoes strict serial communication stability and channel isolation aging testing before delivery, equipped with anti-collision shockproof packaging and one-year global warranty service.
