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Danfoss VLT® AQUA Drive is dedicated to water and wastewater applications. With a wide range of powerful standard and optional features, the VLT® AQUA Drive provides the lowest overall cost of ownership for water and wastewater applications. |
| Features and benefits |
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| Range |
| 200-240 V ........................ 0.25 kW - 45 kW 380-480 V ......................0.37 kW - 450 kW 525-600 V ........................ 0.75 kW - 90 kW 525-690 V .......................132 kW - 630 kW |
| Enclosures |
| IP20/chassis, IP21/NEMA 1,IP55/NEMA 12 and IP66/NEMA 4X |
| Dedicated water features Auto tuning of the PI controllers |
| With auto tuning of the PI controllers, the drive monitors how the system reacts on corrections made by the drive - and learns from it, so that precise and stable operation is achie ved quickly. |
| Pipe Fill Mode |
| Enables controlled (closed loop) filling of pipes. Prevents water hammering, bursting water pipes or blowing off sprinkler heads. |
| End of Pump Curve detects breaks and leakage |
| The feature detects breaks and leakage. End of curve triggers an alarm, shuts off the pump, or performs another userdefined action. |
| Dry Pump Protection lowers maintenance costs |
| The VLT® AQUA Drive constantly evaluates the condition of the pump, based on internal frequency/power measurements. |
| Standard cascade controller |
| The in-built cascade controller controls up to three pumps with fixed lead pump. |
| Motor Alternation |
| This built-in logic controls alternation between two pumps in duty/stand-by applications. Motion of the stand-by pump prevents sticking of the pump. An internal timer assures equal usage of the pumps. |
| Flow compensation |
| The flow compensation feature reduces the pressure set point according to the flow - which saves energy. |
| Initial/Final Ramp |
| The initial ramp provides fast acceleration of pumps to minimum speed, from where the normal ramp takes over. This prevents damage on thrust and bearings. Sensorless Pressure or Flow Control |
