Issue:
CNF fault on the ATV61/ATV71 drives.
Product Line:
Altivar 61 and 71
Environment:
All
Cause:
Drive is not connecting to the network.
Resolution:
CNF means communication network fault.
Check to make sure that if the drive is programmed for NET control that you are writing or reading a command to talk to the drive.
Check your wiring. Make sure the network cables are isolated from any power leads or motor leads.
Check timeout settings as the command timeout may have passed to cause this fault.
Check the network set up parameters.
Check the option card for issue or try swapping out the option card.
For troubleshooting purposes if you need to temporarily disable the CNF fault, you can do so in the FLT menu.
Released for: Schneider Electric Singapore
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales enquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Centre
Find support resources for all your needs, in one place.
