Danfoss Error 1027 __full__ Instant
: A version mismatch between the installed control card and the drive's power card. Step-by-Step Troubleshooting Guide
| Cause | Likelihood | Explanation | |-------|------------|-------------| | | High | Low-ohm short (<< rated value) draws excessive current, killing the IGBT. | | Wiring short | Medium | Brake resistor cable chafed, terminal box moisture, incorrect polarity (if using DC bus braking). | | Brake resistor value too low | Medium | Resistor ohms below minimum allowed for the drive model. | | IGBT natural failure | Medium | Age, thermal cycling, poor quality power supply, or voltage spikes. | | Control board / gate drive fault | Low | Faulty gate driver keeps IGBT turned on. |
Wait for the display to go completely dark (allowing capacitors to discharge). Power back on to see if the internal communication resets. :
Specifically, this error appears when a CAN telegram cannot be sent, which often points toward a within the communication interface. Understanding Error 1027 danfoss error 1027
Fix: Use a multimeter to verify the mains voltage is within the range specified on the drive's nameplate.
, depending on the specific product line. It generally indicates that the device has detected a condition outside its safe operational parameters that it cannot self-correct. Common Meanings and Causes Internal Hardware Error
According to documentation for systems like the Danfoss VLT LD 302 , error codes in the 1024–1279 range are related to CAN communication issues. : A version mismatch between the installed control
If you continue to see the error, the drive requires a service check to replace the faulty hardware. Are you seeing error 1027 on a specific model (e.g., Go to product viewer dialog for this item. Go to product viewer dialog for this item.
Poor seating of internal cables or option cards (e.g., Profibus/Ethernet modules) causing interference.
| LED State | Meaning | |-----------|---------| | Steady green | Normal data exchange | | Flashing green | No configuration / waiting for master | | Red flashing | Timeout or bus error | | Steady red | Option card failure or hardware fault | | Off | No power or card not detected | | | Brake resistor value too low |
To ensure Error 1027 does not reoccur on your production floor, implement these protective parameters and system designs:
Wait at least 15 minutes for the DC link capacitors to discharge completely.
Similar, but not identical. CANopen “Bus Off” means hardware-level fault. Error 1027 is higher-level protocol timeout.
Incoming voltage that exceeds the drive's safe operational limits can cause the internal monitoring to trip the 1027 fault as a protective measure.
The drive will usually trip and stop the motor, requiring a power cycle or reset. Primary Causes of Error 1027