ABB Frequency Converters for Waste Water Treatment Plants

ABB now offers the ACQ550 Series variable frequency converter to protect, supply and recycle water.System reliability, pump efficiency and asuite of industry-specific controls enable waste water treatment plants to successfully maintain a reliable watercycle management system.With this in mind, ABB designed a variablespeed AC drives specifically for Water/Wastewater environments and applications.These devices are available, as standard, forpanel-mounting or factory direct NEMA-1,drip-proof NEMA-12 or outdoor-rated NEMA-3Renclosures.

A water industry start-up assistant resides withinthe intuitive, full graphic display panel to aidin commissioning submersible, centrifugal orpositive displacement pumps. This control panelcan also be mounted remotely, or on the coverof the drive, and used to upload, store anddownload parameters in multiple drive setups.

Application Control

The extensive library of pre-programmed,water-specific application macros allowsrapid configuration of inputs, outputs,and parameters to maximize convenienceand minimize start-up time. To simplifytroubleshooting, the drive uses a real-timeclock, which allows for accurate time stampson faults, resets and more. Two integral optionslots, that can be configured for additional relayoutputs (i.e. drive status indications, timedor pump staging applications) or a variety ofdifferent communication bus adapters, are atyour disposal.

Cost savings

ABB Frequency Converters for Waste Water Treatment PlantsThe ABB ACQ550 variable frequency converter is designed for solutions to give wastewater treatment plants the mostflexible motor control performance throughtwo standard modes: Scalar (V/Hz) for typicalpumps; and Sensorless Vector for the moredemanding applications. By using eitherthese modes, the drive will have accurate speed control ofany standard induction motor.

ABB designed the ACQ550 to save save energy by applying variable electronicspeed control to pumps and pumpingsystems. These savings can be achievedover bypass or valve-operated flow control,traditional diesel driven systems or across theline operations. The Affinity Laws of physicsdefine the relationship between pumpsand the power they require. On centrifugalpump applications, the power requirementof the pump varies by the cube of the speed.Electronically reducing the pump speed by20% will typically cut energy costs in half.Designed for waterThe ACQ550 – which ranges from 1 to 550HP – is well-suited to meet customer demands, fromthe simplest pumping applications, through themost demanding.Introducing an industry-driven approach, a growing network of Water and Wastewater experts, and the new ACQ550 industry-specific variable frequency converter.

To learn more about the ABB ACQ550 product, visit the ABB Website.

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