10

Control Word Timeout

Danfoss · VLT Micro Drive FC 51

What does 10 mean?

This fault indicates that the drive has not received a valid control word via serial communication (e.g., Modbus RTU) within the configured timeout period. This typically means a break in communication, preventing the drive from receiving commands and potentially stopping the motor.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Increase the control word timeout parameter in the drive to allow for slower communication response if necessary.

  2. 4

    Ensure correct addressing of the drive on the communication bus and no duplicate addresses.

  3. 5

    Check for line termination resistors at both ends of the communication bus.

Source: Danfoss VLT Micro Drive FC 51
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