I use 7 Siemens power rail booster to communicate between PLC and vehicles' remote IOs in a monorail system using contactor bars. I have a communication drop when turning on any VFD in in the vehicles on the monorail. Has anyone got any information about PRB? How can I solve my problem?

Best regards.

 

What kind of EMC-filters are used inside the VFDs? You should have first environment RFI filters.