16644

Boot Project Not Loaded, Maximum Power Dip Reached (Warning)

ABB · PB610 Panel Builder 600 Programming Software

What does 16644 mean?

The boot project was not loaded on the SM560-S Safety CPU, likely because the maximum allowed power dip duration was reached. This indicates a power supply instability issue preventing proper boot-up.

Common Causes

  • The boot project has not been loaded into the safety module.
  • The maximum number of allowable power dips has been reached.
  • Improper shutdown or power cycling of the device.
  • Error during the boot project loading process.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Restart the Safety PLC.

  2. 2

    Check the stability of the power supply to the SM560-S Safety PLC.

Browse all codes in this manual (58)
Verified technical data. Last updated: March 2026

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Source: ABB PB610 Panel Builder 600 Programming Software