Browse by topic

performance level

1 article tagged “performance level”.

Flat vector diagram showing the ISO 13849-1 Performance Level scale from PLa to PLe with safety function icons and risk parameter arrows
functional safetyiso 13849-1performance level

ISO 13849-1 PL Levels: What They Mean in Practice

ISO 13849-1 Performance Levels (PLa to PLe) define how reliable a safety function must be. Learn how PL is determined, how it compares to SIL, and what it means for your machine design.

Jul 24, 2026 · 9 min read

← All articles