The ATV312HU11N4 is a 3-phase Variable Speed AC Motor Driver. The Altivar 312 solar drive is designed to help provide drinking water at a lower cost for people with limited or no access to electrical grids. Solar power regulation algorithm (tracking point) for power optimisation related to available sunshine. Tank control level probe. Under-load control for pump protection in the event of water supplies running dry. All-day Run-Stop-Restart mode management. Easy-to-use "Sun" menu for fast commissioning. Diagnostics and self-protection features. Adjustment to pipe length. Suitable for all IEC three-phase asynchronous motors. Full pump management and protection. Advanced parameters for optimized performance. Dedicated output for power availability. Compatible with grid main supply.