Catalogs > Safety Products Catalog > Principles, Standards and Implementation > System Design According to IEC/EN 62061
System Design According to IEC/EN 62061
| Introduction |  |
Subsystem Design: IEC/EN 62061 | |
Affect of the Proof Test Interval | |
Affect of Common Cause Failure Analysis | |
Common Cause Failure (CCF) | |
Diagnostic Coverage (DC) | |
| Hardware Fault Tolerance | |
Management of Functional Safety | |
Proof Test Interval | |
Safe Failure Fraction (SFF) | |
Systematic Failure | |
The standard has requirements for the control and avoidance of systematic failure. Systematic failures differ from random hardware failures which are failures occurring at a random time, typically resulting from degradation of parts of hardware. Typical types of possible systematic failure are software design errors, hardware design errors, requirement specification errors and other operational procedures. Examples of steps necessary to avoid systematic failure include:
- Proper selection, combination, arrangements, assembly, and installation of components,
- Use of good engineering practice,
- Follow manufacturer’s specifications and installation instructions,
- Ensuring compatibility between components,
- Withstanding environmental conditions,
- Use of suitable materials.