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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

F01640

Component replaced, acknowledgment/data save necessary

Siemens · SINAMICS G120

What does F01640 mean?

The system has detected that a component has been replaced, requiring acknowledgment and data saving to integrate the new part and ensure consistent operation. Failure to perform these steps can prevent proper functionality and lead to an inconsistent safety state.

Common Causes

  • Control Unit, Power Module, or Sensor Module replaced without proper acknowledgment procedure.
  • Firmware update initiated but not fully completed or acknowledged.
  • Drive parameter backup restored to a different hardware component or after component replacement without acknowledgment.
  • Safety parameters (e.g., P9700) require acknowledgment after a change or component replacement.
  • Inconsistency detected between the firmware versions or hardware IDs of connected modules.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Access parameter P0009 and set it to 30 (Acknowledge component replacement) to clear the fault.

  2. 2

    After acknowledgment, perform a parameter save (e.g., P0977 = 1) to permanently store the new configuration to non-volatile memory.

  3. 3

    Verify the firmware version of the newly installed component matches other components or the required system version.

  4. 4

    If safety functions are involved, check and acknowledge any safety-related parameters (e.g., P9700=1) after the component replacement.

  5. 5

    Cycle power to the drive after performing acknowledgment and saving parameters to ensure all components re-initialize correctly.

Browse all codes in this manual (109)
Verified technical data. Last updated: April 2026

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Source: Siemens SINAMICS G120
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