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E844

Negative Travel Zone Limit Switch Activated

Indramat · ECODRIVE Controller

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The drive has received a command value that resulted in the axis reaching a position outside the defined negative travel range. The axis is stopped by setting the velocity command value to zero. This is treated as a warning when Bit 2 of S-0-0090 (Command Value Transmit Time - TMTSG) is set to "Exceeding the travel limit is considered as a warning", allowing automatic recovery if command values lead back to the valid range.

Vanlige årsaker

  • The negative travel zone limit switch has been actuated due to the axis moving beyond its defined negative travel range.
  • An erroneous command value instructed the axis to move past the negative limit.

Reparasjonssteg & Sjekkliste

Klikk på steg for å spore fremgangen.

  1. 1

    Specify command values that lead the axis back into the valid negative travel range.

  2. 2

    Verify the physical installation and functionality of the negative travel limit switch.

  3. 3

    Check the commanded position or motion profile from the control system to ensure it respects the defined travel limits.

  4. 4

    Review the parameter S-0-0090 (Command Value Transmit Time - TMTSG), specifically Bit 2, to understand the drive's reaction to exceeding travel limits.

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Verifisert teknisk data. Sist oppdatert: March 2026

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