Description

Overview

The Yokogawa ALR121-S50 Serial Communication Module ensures secure Modbus data exchange in safety-critical environments. Certified to IEC 61508 SIL3 standards, it supports ProSafe-RS systems and enables reliable communication between Safety Control Stations and Modbus master devices. Its compact 3.2×14.1×13 cm form and 0.3 kg weight make it ideal for DIN-rail installations.

Key Features

• Enables Modbus slave communication for ProSafe-RS safety systems

• Maintains SIL3 compliance for high-integrity industrial applications

• Features redundant contact design for uninterrupted safety operations

• Operates reliably across extended temperature ranges

• Provides full electrical isolation to prevent signal interference

• Includes LED indicators for real-time module status monitoring

• Supports Ethernet router connectivity for integrated control networks

• Simplifies installation with space-saving DIN-rail format

Technical Specifications

Parameter	Specification
Model Number	ALR121-S50
Manufacturer	Yokogawa
Module Type	Serial Communication Module
System	DCS
Protocol Support	Modbus slave
Safety Certification	IEC 61508 SIL3
Redundancy	Dual contact design
Communication	Ethernet router
Indicators	LED status lights
Mounting	DIN rail
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