Cause : The number of power modules installed is different from the modules expected comes when the Configuration trip indicates that the Number Of Power Modules Detected (11.071) does not match the previous value stored.

1. Ensure that all the power modules are correctly connected.
2. Ensure all the power modules have powered up correctly.
3. Ensure that the value in Pr 11.071 is set to the number of power modules connected.
4. Set Pr 11.035 to 0 to disable the trip if it is not required.

This trip is also initiated if the number of external rectifiers connected to each power module is less than the number defined by Number Of Rectifiers Expected (11.096). If this is the reason for the trip the sub-trip is 10x where x is the number of external rectifiers that should be connected.