Description

Overview

The Yokogawa ALR121-S50 S1 Serial Communication Module ensures uninterrupted data flow in distributed control systems. Its dual-port architecture supports two independent communication paths, enabling automatic failover during port or module failure. This compact 3.2×14.1×13 cm unit weighs only 0.3 kg, making it ideal for space-limited installations.

Key Features

• Dual redundant ports maintain continuous subsystem communication

• Smart Control Station (SCS) accesses active module under normal conditions

• Standby module synchronizes output image data in real time

• Automatic failover ensures seamless control transition during errors

• Intelligent data equalization refreshes output image at regular intervals

• Supports Ethernet router communication for industrial networks

• Designed for high-availability DCS environments

Technical Specifications

Parameter	Specification
Model Number	ALR121-S50 S1
Manufacturer	Yokogawa
Module Type	Serial Communication Module
System	DCS
Communication	Dual-port, Ethernet router
Redundancy	Automatic failover, synchronized standby
Dimensions	3.2 × 14.1 × 13 cm
Weight	0.3 kg
HS Code	8537101190
Origin	Japan
Condition	Brand New
Availability	In Stock
Minimum Order	1 Unit

Specifications

• Dimensions: 3.2 × 14.1 × 13 cm
• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems