If these steps do not clear the "1027" message, it usually indicates a . At this point, the drive likely requires a professional repair of the internal power board or a full replacement of the unit.
: In some inverter systems, 1027 is a "DC-INTF" alarm, often triggered by loose connections or polarity issues on the DC side. danfoss error 1027
Plant electrician replaced the Profibus cable – no change. If these steps do not clear the "1027"