Two-way and three-way signal isolation provide different approaches to separating electrical circuits in industrial automation systems. This technical guide compares their isolation architectures, explains how power, input and output circuits are considered, and discusses practical selection factors for engineers designing PLC and DCS control panels.
Replacing an existing industrial signal isolator requires more than matching its physical appearance. This guide discusses the essential compatibility checks for evaluating alternative modules, including signal types, input and output ranges, power supply, isolation requirements, wiring arrangements, and relevant certifications. It provides a practical framework for engineers considering GL Series alternatives.
Certification requirements play an important role in selecting signal isolators for international industrial projects. This guide discusses CE, ATEX, IECEx, UL and SIL2, explaining their different purposes and highlighting the documentation and verification steps engineers and procurement teams should consider before purchasing signal isolation equipment.
The GLN signal isolator series receives a 2026 update designed to address evolving industrial signal conditioning requirements. This article introduces the upgrade, explains its significance for industrial automation, and explores considerations for engineers selecting signal isolation solutions for modern PLC and DCS control systems.
