Altistart 22 Enclosed Altistart 22 Soft Starters Page 4 Introduction

4 Altistart 22 soft starters for asynchronous motors Introduction The Altistart 22 soft start - soft stop unit supports the controlled starting and stopping, through voltage and torque control, of 3 HP to 500 HP (4 HP to 400 kW) three-phase asynchronous motors. It comes ready to use for standard applications with class 10 motor protection. The Altistart 22 has been designed to satisfy the performance requirements of applications where ruggedness, the safety of personnel and equipment, and easy commissioning are at a premium. The starting and stopping cycle is controlled by silicon-controlled rectifiers (SCRs) that manage the voltage to the motor. This limits the current during the starting and stopping cycle. The bypass function (based on a bypass contactor) has been made easier by integrating it into the starter. This bypasses the SCRs at the end of the starting process in order to limit the starter's heat dissipation and improve efficiency. The unit also features thermal protection for motors as well as a monitoring capability for machines. SoMove PC software enables configuration files to be created and stored off-line and quickly commissions an installation. SoMove PC software can also be used for monitoring and diagnostics purposes. The Altistart 22 contains an integrated display terminal which allows the user to change both the programming and the adjustment or monitoring parameters in order to adapt and customize the application in line with customer needs. Introduction Applications The integrated functions of the Altistart 22 are compatible with the more common types of applications found in the buildings, infrastructure or industrial sectors: Centrifugal pumps Piston pumps Fans Turbine blowers Refrigerant compressors Screw compressors Centrifugal compressors Material handling (conveyors, etc.) Specialist machines (agitators, mixers, centrifugal machines) The Altistart 22 represents a truly cost-effective solution, as it supports: A reduction in installation costs by optimizing product sizes, integrating the bypass function and reducing wiring time A reduction in the stress associated with electrical distribution by reducing the current peaks and line voltage drops caused by motors starting up A reduction in maintenance costs for machines by reducing mechanical stress

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