turvaohjain
A turvaohjain, or safety controller, is a dedicated electronic device designed to monitor and control safety-critical functions in industrial automation and machinery. Its primary purpose is to ensure the safe operation of equipment by detecting hazardous situations and initiating appropriate protective actions, such as stopping machinery, activating alarms, or limiting speed. Unlike standard programmable logic controllers (PLCs) that handle general automation tasks, turvaohjaimet are built to meet stringent safety standards and certifications, such as ISO 13849 or IEC 61508.
These controllers employ redundant hardware and sophisticated diagnostic capabilities to guarantee high reliability and fault tolerance.