Danfoss Vlt Error Code 2563 [hot] -

Inspect interlock wiring and safety switch contacts annually.

Industrial environments suffer from constant vibration. Over time, terminal screws can loosen. A loose wire on one of the STO input terminals creates intermittent continuity, causing rapid signal dropping that triggers Error 2563. 3. Faulty External Safety Devices

Did this error happen , or after a configuration change ?