I. Pre-Emergency Preparation (Complete within 5 minutes)
Immediately switch the hot runner temperature controller to manual temperature control mode to avoid temperature jumps and over-temperature runaway caused by the failure of the factory default RC parameter filtering.
Retrieve the pre-backed-up RC reference parameter file to confirm that the original calibration resistance values, capacitance values, filter cutoff frequency, and other core parameters are complete and verifiable.
Confirm that the current hot runner temperature does not exceed the process safety range, there is no risk of material degradation, and no cooling and cleaning operation is required.
II. Quick RC Parameter Reconfiguration (Complete within 15 minutes)
Enter the administrator's operation password to access the temperature controller's main menu and find the "Signal Filtering Settings" sub-option.
Switch the current abnormal RC mode to "Manual Configuration" mode and directly enter the RC reference parameters from the backup file.
Quickly verify core performance: Confirm that the target interference signal attenuation is ≥20dB, the total RC time constant is ≤200ms, and there are no sampling delay exceeding the standard.
Enable the "Hardware Latch" function and confirm that the "RC Hardware Lock" indicator is displayed in the status bar to prevent parameters from being accidentally reset again.
III. Production Quick Restart Verification (Completed within 10 minutes)
Switch the temperature controller back to automatic temperature control mode and confirm that the temperature of each segment quickly returns to the process setpoint without significant overshoot or oscillation.
Continuously observe the temperature readings for 10 minutes, confirming that the temperature fluctuation is ≤ ±0.5℃ and there are no irregular jumps.
Simulate normal production interference conditions on-site to verify the stability of the RC filter effect and the absence of abnormal signal sampling.
After confirming that all process parameters meet the standards, directly start injection molding production. Normal mass production can resume after the first product completes appearance and performance verification.
IV. Closed-Loop Closure Operation
Enter the time and RC parameter information of this recovery operation into the process file, and simultaneously investigate the triggering cause of this RC parameter anomaly.
Check whether the RC parameter monitoring nodes of the MES system are triggering alarms normally, and complete any missing anti-reset configurations to prevent similar problems from recurring.
