Cause : PU communication configuration comes when version check cannot find a matching power unit FPGA logic, or number of connected power modules differs from specified.

Check the auxiliary code (format ZZZY YYXX). “XX” specifies the configuration error cause

• 1: Found BAMU 1 configured in wrong channel,
• 2: Found BAMU 2 configured in wrong channel,
• 3: Found PUs configured in wrong channels,
• 4: Found PU configured in wrong channel,
• 5: Found too many PUs.
• Check settings of parameters 195.31 Parallel connection rating id and 191.30 BAMU 1 channel.