TKE E.Cor

Just picked up a couple Thyssenkrupp E.Cor Evolution blue elevators, was looking to see if anyone has any info / manuals on these.

Client reporting occasional power mains supply fluctuations that cause inverter faults that need to be manually reset, any ideas on a fix? Apart from the obvious that they need to sort their mains supply out.

Thanks in advance

Do you know what kind error codes the RPI Drive sets in the error log?
Maybe some info from the MHC event list on the E.Cor controller...