Adjustable frequency drives give variable torque
A
Danfoss Drives product story
Edited by the Engineeringtalk editorial team
Apr 15, 2002
The Danfoss VLT 4000 VT Series of UL, cUL and CE listed adjustable frequency drives are specifically designed to meet the performance and reliability demands of variable torque applications.
The Danfoss VLT 4000 VT Series of UL, cUL and CE listed adjustable frequency drives are specifically designed to meet the performance and reliability demands of variable torque applications.
These drives are easy to set up and operate, can be used in a wide range of industrial applications, including those found in the food and beverage industries.
VLT 4000 VT drives feature built-in harmonic distortion protection and provide comprehensive protection of the drive, motor and process equipment.
They eliminate control valves and problematic pressure storage tanks, reduce energy consumption maintenance and pump noise, and help provide higher product quality.
VLT 4000 VT drives optimise flow, level and pressure process control, and are ideal for controlling multiple parallel-coupled pumps and blowers.
They also enable the use of standard pumps with integral AC motors, and can be installed into existing plants using standard AC motors.
They are available in chassis, Nema 1 or Nema 12 enclosures, and 230V AC (5 to 60hp), 380-460V AC (5 to 600hp) or 550-600V AC (5 to 300hp) input.
Full rated motor performance can be delivered down to 10% under rated AC line voltage.
Below this level output current and torque may be affected by low voltage, but the drive will not trip.
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