AC Motor Controllers and Drives
Learn How the Danfoss VLT® AQUA Drive Can Improve your Water Treatment Operation at WEFTEC 2011
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Visit Danfoss VLT Drives at Booth 2230 in the South Hall and learn how to improve system efficiency in water and wastewater applications
MILWAUKEE, WI -- Danfoss VLT Drives is exhibiting a NEMA 4X-enclosed version of its popular VLT® AQUA Drive at WEFTEC 2011. Engineered with specially designed software for water and wastewater applications, the VLT AQUA Drive is a variable frequency drive that provides seamless installation, commissioning, operation and system maintenance, along with improved energy efficiency, in the water and wastewater industry. WEFTEC is taking place at the Los Angeles Convention Center in Los Angeles, CA, from October 17 - 19, 2011. Danfoss VLT Drives will be exhibiting in South Hall, booth 2230.
Rated NEMA 4X, the VLT AQUA Drive is designed for outdoor installation without the need for an additional enclosure, and delivers reliable operation in temperatures ranging from -10 degrees C to 55 degrees C. These variable frequency drives can be installed with an optional weather shield to protect the heatsink from debris filling up the cooling channel, and to reduce the effect of direct sun. The VLT AQUA Drive also provides 200 mA of 24V to power pressure transmitters to reduce the need for panels and auxiliary power connections. Available options include a fused disconnect, communication cards, and weather-tight USB plug, all of which simplify installation and start-up.
"A new de-ragging feature enables the VLT AQUA Drive to be programmed to rotate backwards to dislodge debris from the impeller, to help keep the pump operating normally. This function can be programmed to run a specific number of cycles for a specified period of time to dislodge the debris," says Jeff Bergman, Danfoss National Product Manager, Water.
The VLT AQUA Drive family significantly improves system efficiency in applications such as water supply, treatment, distribution, pressure and level control, irrigation, and wastewater applications such as pumps and blowers where speed, pressure and/or level control are critical. Its modular design offers the highest flexibility in option selection with fast delivery of a fully factory tested, customized drive with a number of additional plug-and-play options available for simplified upgrades as application needs evolve.
The VLT AQUA Drive offers 98% operating efficiency along with automatic sleep mode functionality, Automatic Energy Optimization and flow compensation to provide considerable energy savings to the user. It is available in NEMA 1, NEMA 12 or NEMA 4X enclosure solutions, and features a compact design with built-in features for easy integration into even the tightest installation spaces. The drive includes a number of pump-specific features to reduce operational costs and protect the pumping system.
Intelligent auto tuning allows the drive to monitor and learn from system reactions to drive corrections and adapt quickly to achieve precise and stable operation. Empty Pipe Fill mode enables controlled filling of pipes to prevent water hammering, bursting pipes and blown sprinkler heads from excessive pressure surges. End-of-curve detection can trigger an alarm or shut down the pump in the event of a break in the line.
The drive will detect when the pump is running dry and will shut it down to prevent damage, while a sleep mode keeps pump wear and power consumption to a minimum. Flow compensation automatically reduces pressure setpoints as appropriate to save energy, and an initial ramp feature allows the pump to quickly accelerate to the minimum frequency while eliminating excessive wear and damage. Up to 20 preventive maintenance events can be scheduled based on the integrated Real-Time Clock. Patented sensorless pressure or flow control enables pump manufacturers to control these variables without the use of sensors. Additionally, a unique "payback" indicator continuously exhibits the amount of time remaining before the investment in these drives pays for itself.
Danfoss VLT Drives
8800 W. Bradley Road
Milwaukee, WI 53224
(800) 621-8806
Fax: (414) 355-6117
www.danfossdrives.com
salesinformation@danfoss.com
