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 |