Type:FCS System
Model:ALR121-S50
Manufacturer:Yokogawa
Connection Method:Point-to-point (RS-422), Multipoint (RS-485)
Communication Function:Serial Communication Module
I/O Wiring:Cable with 3-pair shield, AKB161, or AKB162
Current Consumption:0.5 A
Suffix Code:S=Standard type, 5=With no explosion protection, 0=Basic type
Weight:0.30 kg
Module Type:Extended
Product Class:PLC
Integrating cutting-edge technology, the ALR121-S50 FCS System from Yokogawa is a high-performance serial communication module designed specifically for industrial control applications. Its superior design ensures compatibility with various industrial protocols, making it an ideal choice for modern manufacturing plants.
With its rugged construction and robust RS-422/RS-485 interface, the ALR121-S50 excels in harsh industrial environments, delivering unparalleled reliability and efficiency in data exchange. This module supports both point-to-point and multipoint configurations, providing flexibility to suit diverse system requirements.
Featuring a cable with a 3-pair shield, the ALR121-S50 ensures minimal signal interference, ensuring accurate and consistent communication. The inclusion of AKB161 and AKB162 options further enhances its adaptability, catering to a wide range of industrial needs.
The standard current consumption of 0.5A makes this module energy-efficient, reducing overall power consumption and maintenance costs. The ALR121-S50’s suffix code system provides clear identification, simplifying inventory management and enhancing user experience.
As part of the extended PLC series, the ALR121-S50 offers advanced functionality and compatibility, seamlessly integrating with other Yokogawa products and third-party systems. This modular approach facilitates easy installation, operation, and maintenance, streamlining the process control ecosystem.













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