Tectra Automation adds frequency converters to its range of Bosch Rexroth drives and controlsTectra Automation, a Hytec Group Company, recently introduced the full range of Bosch Rexroth frequency converters for asynchronous AC motors in South Africa, delivering a simple, accurate and energy-saving three-phase drive speed control solution.
By: CubicIce The frequency converters, which comprise three separate converter product ranges – the EFC 3600, the Fe and the Fv – have a wide operation spectrum, supporting motors between the 400 W and 160 kW power range, and are easily connected to new or existing automation topologies via Modbus or PROFIBUS fieldbus interfaces. Process control is improved through integrated PID controllers in addition to an eight-step sequence control system. Converters for every power specification Each converter has a different functionality and optimal power range. The EFC 3600 offers an affordable solution for lower power control applications between 400 W and 4 kW. The freely scalable V/f characteristic allows load-dependant adjustment of the voltage/frequency curve, ensuring a longer motor service life. The EFC 3600 delivers economic benefits for general automation, material handling, pumps, fans and compressors. Typical applications include building-material machines and technology; environmental and process engineering; The Bosch Rexroth Fe frequency convertor covers the power range from 750 W to 160 kW, and is designed to be used as an open loop application in harsh industrial environments. The Fe comes in two varieties: G-type is designed for applications requiring high overload capability (e.g. conveyor belts, agitators and extruders), while P-type is designed for applications that require high durability (e.g. pumps, fans and crushers/shredders) The Bosch Rexroth Fv frequency converter was developed as a field-oriented drive for higher performances, covering the power range 400 W to 90 kW. The Fv has three control modes: V/f control, Sensorless Vector Control (SVC) and Vector Control with Encoder (FOC), giving the device a universal applicability. Typical applications include material transportation; Process-enhancing functionality Frequency converters are an essential component in drive automation, allowing precise mechanical functions to be simply parameterised and stored into memory. Besides altering operational speeds of a drive installation, Bosch Rexroth frequency converters deliver dramatic energy savings to a machine that continues to be the largest consumer of energy within general industry. Overcoming a motor’s inertia consumes up to seven times its operating current rating. The frequency converter eliminates this initial peak by a gradual ramping of speed via controlled input frequency. Because industry is charged for electricity usage in terms of a process’s peak power demands, reducing this peak results in huge operational cost savings. Advancing simplicity of use, the converter’s control interface can detach from the main unit, and be mounted on the forward door of the electrical control panel, giving the user access to the potentiometer, stop/start control buttons and display screen enabling quick parameter settings access and manipulation, convenient copy function, easy diagnosis and additional functions. This detachment function also allows parameters to be copied and transferred between units using the panel’s memory and copy function in installations that comprise multiple motor drives configured for identical tasks. Additionally, in the event of component failure, parameters can be retained from the old component through the simple insertion of its display panel to a new device Additional braking resistors are available for applications where the controlled motor is required to stop instantly, dissipating the voltage produced via electromotive force. Tectra Automation retains frequency converters up to 15 kW. The higher-powered, larger units are imported from Germany with a delivery period of about four weeks. With the introduction of frequency converters, Tectra Automation now offers the complete Bosch Rexroth componentry for machine automation control panels. ENDS Captions: EFC 3600 The EFC 3600, for the 400 W to 4 kW power range, is an affordable solution for lower-power control applications. Fe Designed for open loop applications in harsh industrial environments, the Fe covers the power range from 750 W to 160 kW, and, via 2 model types, is designed for both high overload capability and high durability. Fv Designed for the power range 400 W to 90 kW, the Fv frequency converter was designed as a field-oriented drive for higher performances. Enquiries: Georg Venter Divisional Manager, Electric Drives and Controls Tectra Automation (http://www.hytecgroup.co.za/ Tel: 011 974 9400 Email: Website: From: CubicICE (http://www.cubicice.co.za/) Submitted: Account Manager [zeldao@cubicice.com] Compiled: Kieran Tavener-Smith PR: PR TEC 3764 Frequency Converters End
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