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7 Functional Safety Framework for Professional Environments

1 Fail-Safe Operation Principles (Safe state on power loss, communication failure)

  - Safe State Definition for Each Device Type
  - Power Loss Recovery Procedures
  - Communication Failure Handling
  - Watchdog and Monitoring Systems

2 Critical Function Protection (Essential controls remain operational)

  - Critical vs Non-Critical Function Classification
  - Emergency Override Mechanisms
  - Backup Control Pathways
  - Manual Operation Fallbacks

3 Emergency Stop and System Disable Mechanisms

  - Hardware Emergency Stop Implementation
  - Software Emergency Shutdown Procedures
  - System Isolation and Containment
  - Recovery and Restart Procedures

4 Professional Equipment Reliability Requirements (MTBF >50,000 hours)

  - Component Selection for Professional Use
  - Environmental Operating Conditions
  - Preventive Maintenance Schedules
  - Reliability Testing and Validation Procedures

Safety Analysis Required: Functional safety implementation according to IEC 61508 principles

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