0079

PI (Fault during parameter initialisation)

Lenze · 9300 Series

What does 0079 mean?

An error was detected during parameter set transfer between two devices, or the parameter set does not match the controller (e.g., higher-power controller data transferred to lower-power). This prevents proper device initialization.

Common Causes

  • Incompatible hardware version or power rating mismatch between the source and target controllers during parameter transfer.
  • Transfer of a parameter set from a different product series or family to the current device.
  • Software version mismatch between the originating parameter set and the target controller's firmware (C0004).
  • Corruption of the parameter data file during transfer from an external tool (e.g., PC software).
  • Internal memory write protection enabled or memory failure preventing new parameters from being initialized.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the model number and power rating of the controller against the source of the parameter set to confirm compatibility.

  2. 2

    Check the firmware version (C0004) of the target controller and ensure the parameter set is generated for or compatible with this specific version.

  3. 3

    Attempt to initialize the drive with factory default settings by setting C0003 = 1 and then performing a power cycle.

  4. 4

    Use the manufacturer's dedicated software (e.g., Lenze Engineer) to create a new parameter set specifically for the target controller and its firmware.

  5. 5

    Inspect the communication interface (e.g., Ethernet, USB cable) used for parameter transfer for damage or loose connections.

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Verified technical data. Last updated: March 2026

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