H
hessmichaelAug 16, 2025
What to do if Curtis 1238E Controller shows Overcurrent Shutdown?
- JjohnsonrobertAug 17, 2025
If your Curtis Controller shows an Overcurrent Shutdown, it indicates that the phase current exceeded the current measurement limit. This can be caused by: 1. An external short in the phase U, V, or W motor connections. 2. Mis-tuned motor parameters. 3. A defective controller. 4. Speed encoder noise problems. To clear this, cycle KSI (Key Switch Input).