SLF

Serial Link Failure

Schneider Electric · ALTIVAR 28 Variable Speed Drive

What does SLF mean?

This fault signifies an issue with the serial communication link to the drive controller, such as an incorrect connection or a break in communication. This prevents the drive from receiving commands or sending status information via the serial interface.

Complete Troubleshooting Guide

  1. 1

    Verify the physical integrity and correct wiring of the serial link cable to the drive controller connector.

  2. 2

    Confirm that communication parameters (e.g., baud rate, parity, address) are correctly configured on both the drive and the connected master device.

Source: Schneider Electric Manual