2563 ((exclusive)): Danfoss Vlt Error Code

on Danfoss VLT drives indicates a communication-related fault between the drive and an external device or an internal communication module. Common causes include wiring faults, configuration mismatches, faulty communication modules, or intermittent electrical noise.

If your drive is out of warranty (most are when this error appears), you have three paths:

If Error 2563 , the issue lies entirely within your external safety loop wiring, relay, or PLC.

Follow this systematic guide to isolate and resolve Danfoss VLT Error Code 2563 safely. Step 1: Safety First Danfoss Vlt Error Code 2563

In high-precision applications where the drive is tasked with "positioning" or "synchronizing" (rather than just controlling speed), the drive compares the position of the motor (usually via an encoder) to the

Verify that all three phases are connected correctly to the motor.

Turn off the power, wait for the display to go dark, and restart. Follow this systematic guide to isolate and resolve

The error appears as a trip-locked alarm that prevents the drive from starting in automatic or manual mode, with the alarm LED lit and the message “internal error, please contact your supplier error code 2563” displayed.

Sometimes, clearing corrupted internal memory fixes the sync timeout. Hold the Status , Main Menu , and OK keys simultaneously while powering up the drive to perform a factory reset (Parameter 14-22). Note: Back up your parameters using MCT 10 or the LCP before doing this.

What is installed? (e.g., PROFINET, EtherNet/IP, PROFIBUS) The error appears as a trip-locked alarm that

Ensure all control and power wiring is to prevent EMC issues.

Observe if the number appears only during power-up or if it is accompanied by "Err." or "AL" (Alarm). Troubleshooting Next Steps If the drive is halted and displaying this number:

If you replaced the control card but did not update the firmware to match the power module, or vice versa, the drive may throw 2563 because it reads incompatible data structures.

If the resistance is low (typically