Safety relay reset circuit for restoring machine operation after safety device activation
A specialized electrical circuit within a safety relay that enables controlled resetting of safety functions after a safety device (e.g., emergency stop, light curtain, safety gate) has been triggered and the fault condition has been cleared. It ensures the machine cannot restart automatically and requires manual intervention to verify safe conditions before resuming operation.
诱因 → 失效模式 → 工程缓解
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Manual reset requires physical operator intervention (pushing a button) after fault clearance, ensuring verification of safe conditions. Automatic reset occurs automatically when fault conditions are cleared, which is generally prohibited for safety functions as it could lead to unexpected restarts.
Monitored reset circuits ensure the reset signal is only accepted when all safety conditions are met and the reset device is properly functioning. This prevents accidental or unauthorized resetting and provides additional safety assurance.
No, bypassing safety reset circuits is strictly prohibited as it compromises machine safety. Maintenance modes should use properly designed control systems with appropriate safety measures rather than circuit bypassing.
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