Yokogawa ALR121‑SE1 Communication Module is a PROFIBUS‑DP interface unit designed for CENTUM VP systems, enabling high‑speed and reliable communication between field devices and the DCS with robust isolation and redundancy support.
Specifications:
Manufacturer: Yokogawa
Model Number: ALR121‑SE1
Product Type: PROFIBUS‑DP Communication Module
System Compatibility: CENTUM VP Distributed Control System
Transmission Speed: 9.6 kbps to 12 Mbps
Communication Ports: Dual PROFIBUS‑DP channels + maintenance port
Maximum Distance: Up to 1.2 km per segment (at 9.6 kbps)
Isolation: Channel‑to‑channel and bus isolation for reliability
Installation: Rack‑mounted module design
Weight: Approx. 2.0 kg
Features:
High‑Speed Communication: Supports PROFIBUS‑DP up to 12 Mbps
Dual Channel Design: Provides redundancy and fault‑tolerant operation
System Integration: Seamlessly connects field devices with Yokogawa CENTUM VP
Robust Isolation: Ensures safe and noise‑immune communication
Maintenance Port: Simplifies diagnostics and configuration
Industrial Reliability: Built for continuous operation in demanding environments
