Power unit: Watchdog timer

What does A30810 mean?

During the booting process, it was detected that the cause of the previous system reset was an SAC (System Access Controller) watchdog timer overflow. This means a critical software process failed to acknowledge the watchdog timer within its allotted time, leading to an unexpected system reset. Repeated occurrences can indicate software instability or resource contention.

• Internal software process within the power unit (managed by SAC) exceeded its allocated execution time, leading to a watchdog reset.
• Firmware bug or anomaly causing a task to become unresponsive or enter an infinite loop.
• Hardware instability or memory access issues within the SAC controller or associated circuitry.
• Power supply fluctuations or brownouts during critical operations causing unexpected processor resets.
• Overloading of the power unit's internal processing resources.

Click steps to track your progress.

1. 1

   Perform a complete power cycle of the drive system to reset the power unit and SAC controller.

2. 2

   Verify the firmware version of the power unit and consider updating to the latest stable release (e.g., via SD card).

3. 3

   Check the power supply stability to the drive, including input voltage (L1, L2, L3) and control power (e.g., 24VDC), for fluctuations.

4. 4

   If the watchdog reset occurred during a specific operation, try to simplify the application or reduce the motor load.

5. 5

   Back up the drive parameters and attempt a factory reset of the power unit, then reload the parameters to eliminate potential corruption.