Why Safety-Certified Components
Matter in Machine Design
In industrial automation, the question isn’t whether safety is important, it’s how is safety achieved. While standard components can technically be used in safety applications under EN ISO 13849 and the Machinery Directive 2006/42/EC, the complexity and liability of proving their safe function often outweigh the perceived cost savings.
Safety-certified components take that uncertainty out of the equation. These products undergo extensive testing, validation, and third-party certification to meet strict safety standards. They provide machine builders with verified data on performance levels, diagnostic coverage, and mean time to dangerous failure (MTTFD), reducing engineering workload and lowering risks.
The Advantage of Certification
When a component is safety-certified, it’s been proven to behave predictably and fail safely when it reaches fault conditions. That means less time spent documenting performance and more confidence that the system will meet compliance requirements. Certified components can save hours of design and validation effort while protecting against costly liability exposure.
Rod Locks: A Case Study in Safety Assurance
Rod locks are one area where certification delivers undeniable benefits. Designed to prevent unexpected movement when energy is removed, they serve as a critical backup safety mechanism in applications with stored energy. Parker’s 4MAP rod lock, integrated with the 4MA cylinder, is available in configurations from Category B to Category 4, Performance Level e (PLe). Each version includes monitoring sensors for position feedback. This helps ensure safe, reliable operation.
In machine safety, the right component selection isn’t just a design decision, it’s a risk management strategy. Choosing safety-certified products helps manufacturers meet global standards, streamline validation, and protect both people and productivity.
Learn more about Parker’s safety-certified pneumatic solutions at www.parker.com/pneumatics.