Meaning
International safety requirements provide guidelines for the design and integration of safety-related parts of control systems. Following iso 13849 safety standards ensures that machinery operates without posing an undue risk to human operators. These rules apply to electrical, hydraulic and pneumatic systems, but they do not cover the structural integrity of the machine frame.
Performance Level
Quantitative measures define the reliability of a safety function based on the probability of a dangerous failure per hour. Adhering to iso 13849 safety standards requires engineers to calculate the mean time to dangerous failure for every component in a circuit. Higher risk operations demand a higher rating to prevent accidents.
Component Reliability
Certified hardware must meet specific durability tests to be included in a safety-critical assembly. Under iso 13849 safety standards, parts are selected based on their ability to perform their intended task even after years of use. Using unrated components in a safety circuit is a violation of these global norms.
System Validation
Final testing confirms that the safety functions respond correctly to various fault conditions. Compliance with iso 13849 safety standards involves a thorough check of how the machine stops when a light curtain is crossed or an emergency button is pressed. If the response time is too slow, the system is rejected and must be redesigned.
This verification process ensures that the machine is ready for the factory floor.
