Acronym · Safety & Security
FTTI (Fault Tolerant Time Interval)
The maximum time a fault may be present before a hazardous event can occur. It budgets the diagnostic test interval plus the fault reaction time, and so sets how fast a safety mechanism must detect and react.
- Also known as
- Fault tolerant time span
- Type
- Acronym
- Domain
- Safety & Security, Safety lifecycle
Notes
Typical automotive FTTIs range from a few milliseconds for steering to hundreds of milliseconds for slower actuators.
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Part of the Safety & Security glossary, with every term in the topic and the lifecycles, tools and standards that use them.
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