Danfoss is a critical internal communication fault that typically occurs within the VLT series frequency converters (such as the FC 102, FC 202, and FC 302). It indicates that the control card is unable to communicate with the power card or that an internal CAN telegram cannot be sent . What Causes Error 1027?
If a terminal is set for this function but is not receiving a 24V signal, the drive may trip. Ensure a jumper exists between terminal 12 (24V DC) and the programmed input. Check DC String Connections (Solar Inverters) MC4 connectors for loose connections or poor crimping. danfoss error 1027
Disconnect the motor leads (at the drive output). Run the drive without a load. Error 1027 Danfoss is a critical internal communication
Elias followed the standard protocol for a "silent" drive: If a terminal is set for this function
Use Parameter 15-00 to 15-02 (or 19-80 in some lift series) to view the last 10 alarms. This log provides more context on what was happening (voltage levels, current) at the exact moment the 1027 error occurred. When to Contact Danfoss Support