Comprehensive Guide to Troubleshooting Danfoss VLT Error Code 2563
If the error occurs intermittently—especially when the motor ramps up or under heavy load:
This is not a general "overload" alarm. It is a specific, hardware-level alert indicating that the temperature sensors embedded within the of the drive—specifically the IGBT modules, DC bus capacitors, or rectifier bridge—have detected temperatures exceeding the safe operating threshold (typically >95°C or 203°F).
Navigate to the on the LCP.
Ensure that all (motor and control) are properly bonded at both ends with a 360-degree connection.
and check option card seating during scheduled plant shutdowns.
If the error returns immediately after a power cycle, the issue is likely physical. Danfoss Drives - Basic Troubleshooting of VLT Series Drives Danfoss Vlt Error Code 2563
Measure between the digital ground (Terminal 20 or 39) and each safety input channel.
Before proceeding, ensure the drive is isolated from the mains supply and wait at least 4 minutes (or the time specified on the drive's warning label) to allow the DC bus capacitors to discharge fully. High voltage remains present even after power is removed.
Cycle power to the drive and press the “Reset” key to clear the alarm. Press the “Hand On” key to start the drive locally. Ensure that all (motor and control) are properly
This critical safety diagnostic occurs when there is a mismatch between the internal safety circuit status and the feedback signals monitored by the drive's control card. 🔍 Understanding Error Code 2563
If you need to confirm that the issue is external and not the drive itself:
Ensure all control wiring shields are correctly tied to the grounding plates using metal spring clamps. Danfoss Drives - Basic Troubleshooting of VLT Series