Daniel_Iceland Posted October 12, 2019 Report Share Posted October 12, 2019 I am using a USC-B5-R38 to run two inverters UMI-022BE-B1 most of the time I try to start them running with "VFD Run frequency Mode" the output code becomes -4 (goes through 2 before) The VFDs are active, Enable communication is on vfd is connected = 1 Enable periodic status Read = 1 I can download and upload profiles but trying to get the inverters running nearly always gives me error nr -4 "Communication timeout exceeded" . (mod edited out your email address, Daniel) Quote Link to comment Share on other sites More sharing options...
MVP 2023 kratmel Posted October 12, 2019 MVP 2023 Report Share Posted October 12, 2019 Is it this VFD settings correct? P00.01 Run command channel = 2, P00.06 or P00.07 Frequency command selection = 8 Quote Link to comment Share on other sites More sharing options...
NoamM Posted October 15, 2019 Report Share Posted October 15, 2019 Dear Daniel_Iceland, Open a ticket on Unitronics "Help center" at https://support.unitronics.com/index.php the Support team will assist. Quote Link to comment Share on other sites More sharing options...
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