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...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.