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COM.E

Communication Error (Remote Display)

Schneider Electric · Altivar 312 Variable Frequency Drive

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This error occurs on the remote display terminal, indicating a communication timeout (50 ms) after 20 attempts to establish or maintain communication with the drive. This typically points to a faulty connection between the terminal and the drive, or incorrect communication settings, leading to a loss of display functionality and control.

Vanlige årsaker

  • Loose, disconnected, or damaged communication cable between the remote display terminal and the drive's communication port.
  • Incompatible firmware versions between the remote display and the drive, preventing proper data exchange.
  • Incorrect communication parameters (e.g., address, baud rate) configured in either the remote display or the drive (if user-configurable).
  • Excessive electromagnetic interference (EMI) on the communication lines causing data corruption and timeouts.
  • Faulty communication port on either the remote display unit or the drive itself.

Reparasjonssteg & Sjekkliste

Klikk på steg for å spore fremgangen.

  1. 1

    1. Inspect the communication cable connecting the remote display to the drive for any physical damage (cuts, pinches) or loose connections at both ends.

  2. 2

    2. Verify that the remote display unit is correctly seated in its mounting slot or securely connected to the drive's communication port.

  3. 3

    3. Check for strong sources of electromagnetic interference (EMI) near the communication cable; re-route the cable if necessary, ensuring proper shielding.

  4. 4

    4. If configurable, verify that the communication address and baud rate settings on the remote display match those configured in the drive (e.g., P5-01, P5-02).

  5. 5

    5. Attempt to connect a known-good, compatible remote display unit to the drive to determine if the issue is with the original display or the drive's communication port.

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Verifisert teknisk data. Sist oppdatert: March 2026

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Kilde: Schneider Electric Altivar 312 Variable Frequency Drive