Disconnect the motor leads (at the drive output). Run the drive without a load.
Danfoss Error 1027 typically categorized as an internal hardware error overvoltage fault danfoss error 1027
The root causes for Error 1027 can be broken down into two main categories: those stemming from the CAN bus network and those pointing to internal hardware. Understanding the difference is key to an effective diagnosis. Disconnect the motor leads (at the drive output)
| Finding | Action | |---------|--------| | Shorted brake resistor | Replace resistor brake IGBT (drive repair or replacement) | | Shorted IGBT only | Replace drive power section or entire drive (component-level repair for advanced techs) | | External wiring short | Repair wiring, then verify IGBT still healthy (often already damaged) | | Gate driver fault | Return drive to Danfoss service center | Understanding the difference is key to an effective
: The CAN bus is the communication backbone for industrial automation systems. A physical or electrical fault on this network will prevent telegrams from being sent. Common causes include:
If the error persists, try resetting the drive's parameters to factory defaults. This can clear any corrupted user settings that might be contributing to the issue. Consult your specific drive's manual for the precise procedure, but it is often done via a parameter in the "Reset" menu.
Confirm whether Error 1027 was preceded by other faults like overvoltage or phase imbalances. Access the Danfoss LCP Main Menu . Navigate to the parameters.