Components & Hardware
Safety-Instrumented Controller
The independent system that enforces protective interlocks.
- Role
- Protective interlocks
- Standard
- IEC 61508/61511
A safety-instrumented system, independent of normal control, enforces the interlocks that protect the machine and staff — tripping on out-of-bounds conditions to a safe state. Its integrity level is set by functional-safety standards.
Common questions
What does the safety-instrumented controller do?
It is the independent safety system that monitors for hazardous conditions and drives the plant to a safe state, kept separate from the machine-protection and normal control systems by design.
How does it differ from machine protection?
Machine protection guards the hardware; the safety-instrumented system protects people and the environment. Keeping them independent is standard safety-engineering practice, applied here to a fusion plant.