: Aged capacitors or failing logic gates on the control card. Step-by-Step Diagnostic Process
(likely the power board or control card). You should contact a certified Danfoss Service Department for repair or replacement. Top ten VFD tech support calls - Danfoss danfoss error 1027
Error 1027 on a Danfoss VLT drive indicates a , which is classified as a severe internal hardware error. : Aged capacitors or failing logic gates on the control card
From the PLC or network scanner:
: In some troubleshooting contexts, a fault in this range may be associated with overvoltage conditions where the incoming supply exceeds safe operational limits. JustAnswer Immediate Troubleshooting Steps Power Cycle danfoss error 1027
In Danfoss documentation (specifically for VLT® drives with fieldbus options), is defined as: "Bus communication fault – Timeout."