ISO 13849-1 Explained: Functional Safety and Compliance for Industrial Test Equipment

Functional safety is a critical aspect of modern industrial equipment. ISO 13849-1 sets the global benchmark for designing safe control systems used in machinery. For testing equipment — including chambers, vibration systems, and automated benches — it ensures that both operators and devices are protected under fault conditions.

What is ISO 13849-1?

ISO 13849-1 defines how to evaluate and design the Safety-Related Parts of Control Systems (SRP/CS). It assigns a Performance Level (PL) from “a” to “e” based on factors like:

• System architecture

• Mean Time to Dangerous Failure (MTTFd)

• Diagnostic Coverage (DC)

• Common Cause Failure (CCF)

Why It Matters for Test Equipment

Even non-production machines like chambers or vibration tables involve risks: high temperature, mechanical motion, or electrical actuation. ISO 13849-1 ensures those systems prevent accidents through fail-safe design, monitoring, and redundancy.

How We Implement ISO 13849-1

• Define Safety Functions – e.g., lock chamber door when temperature >60°C.

• Select PL-verified components – with proper MTTFd, DC, and CCF values.

• SISTEMA Validation – We use this tool for PL calculation and documentation.

• Redundant Design – Especially for critical functions like motor cutoff, brakes, etc.

Typical Safety Functions in Our Equipment

ISO 13849-1 vs. IEC 62061

Is It Mandatory?

For CE marking in the EU, ISO 13849-1 is harmonized under the Machinery Directive, providing a presumption of conformity. In the U.S., it’s referenced by ANSI B11.19 and others, though not strictly mandated by OSHA.

Your Compliance Partner

We design all our machines — chambers, vibration systems, and automation — with functional safety in mind. We help you meet or exceed ISO 13849-1 standards and assist with CE documentation or technical files.

 See our compliant machines
Reach us at marketing@aslitesting.com