Start here for access to our Knowledge Base to get answers to over one hundred thousand questions online in seconds.Find Answers
...See what we've been doing in some of our major markets.Find your Location
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
What can cause an SLF fault on the ATV312 drive?
Altivar ATV31 and ATV312
Serial link fault or missing HMI with drive programmed for HMI or LCC control set to yes.
Make sure parameter LCC in the CTL menu is set to no if you are not using a remote HMI.
Make sure you don't have a interruption on your modbus connection.
Review this process in the provided video below: