Based on your previous experience focusing on RC parameter calibration, anti-drift locking, and rapid recovery after anomalies in hot runner temperature controllers, production can be quickly restored within 15-30 minutes even with RC parameter locking. A complete and feasible operational plan is as follows:
I. Pre-emptive Emergency Check (Completed within 5 minutes)
First, confirm that the RC lock has not been abnormally released, and the temperature controller status bar still displays the "RC Hardware Locked" indicator.
Check the actual temperature of each hot runner section to confirm that it does not exceed the process safety range and there is no risk of material degradation or runner blockage.
Confirm that there are no new sources of enhanced interference in the vicinity, and that temperature sensing wires and connectors are not damaged or loose, ruling out external hardware failures.
II. Rapid Parameter Verification (Completed within 10 minutes)
Enter the temperature controller's "Signal Filtering Settings" interface and confirm that the currently locked RC parameters are completely consistent with the baseline file, with no drift deviation.
Quickly verify core performance: Target interference signal attenuation ≥20dB, RC total time constant ≤200ms, and temperature sensing signal delay within acceptable limits.
Confirm the temperature control curve is smooth, without jumps, overshoot, or oscillations, with temperature fluctuations ≤ ±0.5℃, meeting current injection molding process requirements.
III. Production Restart Operation (Completed within 10-15 minutes)
Confirm all hot runner points reach the process setpoint, maintain stable temperature for 3-5 minutes, and eliminate temperature gradient differences within the runner.
Perform 1-2 air-jet cleaning operations to remove residual melt from the runner, confirming uniform material output free of impurities.
Start injection molding production. After the first product passes rapid visual inspection, normal batch production can resume.
IV. Closed-Loop Finishing Operation
After production starts, continuously monitor temperature data for 30 minutes to confirm the RC lockout is stable with no abnormal parameter changes.
Enter the time and operating parameters of this restart operation into the process file, and update subsequent RC calibration cycles accordingly.
