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Ideal for industrial or domestic applications such as three-phase scroll compressors, the new soft-starter features internal semiconductor by-pass technology and is available with nominal current up to 32A. The module comes in a compact 45mm-wide format for space-conscious panel or DINrail mounting. Control of all three phases ensures optimum current reduction, along with balanced current on all phases. This is achieved without the need to make front-panel settings.
An innovative self-learning algorithm ensures that optimum starting current performance is achieved at every start. The auto-adaptive software is available as standard on all RSBT variants and works by measuring relevant parameters during ramp-up, storing these values and using them to set new current-limit values for the following start. The goal is to use the smallest inrush current value to start the motor, without exceeding the 600ms maximum ramp-up time.
Optimisation is achieved automatically by the software-starter, so users do not have to adjust external settings and there is no need to make initial settings in the factory. As well as saving time, this eliminates a possible source of operator error. The feature also compensates for higher starting currents that may be required as compressors age, reducing potential problems and start-up alarms. The result is lower down-time and fewer service calls.
This integrated current limit feedback reduces inrush current by up to 65 percent, allowing users to counter escalating energy costs and peak consumption regulations. Moreover, the resulting reduction in component stress extends compressor lifetime, further lowering the cost of ownership.
The soft starter can perform 12 starts per hour; providing significant headroom over the four to sixstarts typically carried out by heat pumps.
Built-in motor protection capabilities range from transient over- and under-voltage protection, through phase sequence and under-voltage monitoring, to locked rotor protection, over-temperature protection and over-current protection in by-pass mode. Full status indication is provided through an easy to read alarm LED flash sequence. Beyond these vital functions, further facilities are readily added via Carlo Gavazzi's extensive range of rail-mounted motor control modules.
Designed to comply with the latest, IEC60947-4-2, international motor-starter standards, the RSBT soft-starter is also RoHS compliant, cUL listed and carries appropriate CE marks.
About Carlo Gavazzi
Carlo Gavazzi's Automation Components Business Unit comprises five international production sites, sensors, switches, control, safety and fieldbus, which design and manufactureelectronic control components from factories located in Denmark, Italyand Malta. The products provide automation solutions for machinery, equipment, plants and buildings. The products are marketed across Europe, North Americaand Asiathrough a network of 17 wholly-owned Carlo Gavazzi sales companies and in other countries by more than 40 independent national distributors. Carlo Gavazzi has its operational headquarters in Italy, and financial headquarters in Switzerlandas it is quoted on the Zurichstock exchange.
CONTACT: Carlo Gavazzi, Sales enquiries Tel: +44 (0)1252 339 600 Fax: +44 (0)1252 326 799 e-mail: sales@carlogavazzi.co.uk WWW: http://www.carlogavazzi.co.uk Editorial / advertising enquiries, Neesham Public Relations e-mail: elaineh@neesham.co.uk Tel: +44 (0)1296 628 199 Elaine Hodson, Account Executive, Neesham Public Relations Tel: +44 (0)1296 628 180 Fax: +44 (0)1296 696 530 WWW:Ahttp://www.neesham.co.uk
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