Danfoss Error 1027 ((free)) Jun 2026

When Error 1027 is triggered, the drive initiates an immediate , dropping output voltage to zero and causing the attached motor to coast to an immediate stop to safeguard internal circuitry. Anatomy of Error 1027: Root Causes

Simultaneously press and hold the , [Main Menu] , and [OK] keys on the graphical interface.

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Confirm that the communication lines match perfectly (e.g., Terminal H to Terminal H, L to L). Step 3: Verify Power Delivery

: Since the error notes a "possible hardware error," check if the communication module is properly seated in the drive. When Error 1027 is triggered, the drive initiates

button on the Local Control Panel (LCP) to attempt to clear the alarm. Hardware Check

The power card, which manages the high-power sections of the drive, must communicate reliably with the control card. A malfunction on the power card can corrupt data on the internal bus. Furthermore, the physical ribbon cable that connects the control card and the power card can sometimes become loose, have a bad contact, or be damaged. A faulty connection here can mimic the symptoms of a full hardware failure. This link or copies made by others cannot be deleted

If an expansion module is not receiving its required 24V AC/DC power, its communication chip shuts down.