A soft start
3rd Quarter 2012
Other technologies
With a focus on small size and ease of installation, the Eaton DS7 line of reduced voltage solid state soft start controllers offers reliable and efficient soft starting. Designed to control the acceleration and deceleration of three-phase motors, the series is available for current ranges from 4 to 32 A.
Soft on the wallet, strong on torque
The reduced-voltage soft starter has become increasingly established as an alternative to the star-delta starter. With a focus on compact size and ease of commissioning, the Eaton DS7 line of reduced voltage solid-state soft start controllers is an ideal choice for safe, dependable soft starting. With an asymmetrical control method, startup is soft but at a higher torque value than other available solutions. Designed for typical applications such as pumps, fans and small conveyors, the compact DS7 Series is a reliable choice.
The modern alternative to star-delta starters
The electronic soft starter fulfils the need for an impact-free rise in torque and a significant reduction in maximum current during the start phase. This helps to prevent impacting of cog edges in the gearbox, water hammers in pipe systems, slipping of V-belts and jitter with conveyor systems.
The smallest soft start controller in its performance class, the DS7 Series is the perfect option for upgrading existing systems that may currently be using star-delta, autotransformers or across-the-line NEMAT and IEC starters. It offers the benefits of soft starting without having to change enclosure sizes or add additional assemblies – thus saving time and money.
Asymmetrical control: a truly soft start
An asymmetrical trigger control developed by Eaton makes it possible to achieve truly soft starts. It avoids DC current components that normally result in a two-phase controlled soft starter. This algorithm suppresses the formation of an elliptical rotating field, which leads to irregular acceleration of the motor and un-necessarily extends acceleration times. On DS7 series devices, an asymmetric trigger control is active during the start and stop ramp.
For more information contact Rob Hare, Eaton Electric, +27 (0)11 824 7400, robhare@eaton,com, www.eaton.com
Further reading:
Next-generation motor management solution
Schneider Electric South Africa
News & events Other technologies
Schneider Electric has launched its TeSys Tera motor management solution in the West African market, combining advanced motor protection, digital connectivity and real-time diagnostics for manufacturing, mining and water applications.
Read more...
From concept to execution, unlocking renewable energy
Other technologies
Businesses already understand the benefits of renewable energy, however, as renewable energy solutions become more sophisticated, successful implementation requires a structured decision-making process that aligns technology choices with business objectives.
Read more...
Smarter, more secure electricity networks
Other technologies
As South Africa accelerates the rollout of smart prepaid electricity metering, innovative enclosure technology from PPS is helping utilities improve network security, reduce electricity theft and protect critical electrical infrastructure.
Read more...
Siemens launches SIMATIC AX WinCC Unified Elements
Pneumatic systems & components Other technologies
New engineering tool speeds automation application development, reducing the time required to bring industrial projects to market and empowering automation engineers to build, manage version control, and deploy visualisation engineering projects
Read more...
Decoupling software from hardware for future-proofed process automation
Schneider Electric South Africa
Other technologies
Legacy systems continue to perform admirably; the dilemma is that systems like PLCs, DCS (distributed control systems), SCADA and field devices were designed for deterministic, long-term operations.
Read more...
Duplex worm gears for precision backlash adjustment
Other technologies
KHK USA has introduced duplex worm gears that allow precise backlash adjustment through simple axial movement of the worm shaft, eliminating the need for gearbox housing alterations during assembly or maintenance.
Read more...
Corrosion solution for engine hot testing
Other technologies
Engine internals are at risk for corrosion from water used during hot engine testing and fill and flush activities. Corrosion affects the engine’s like-new appearance and threatens its integrity.
Read more...
Hygienic ultrasonic flow sensor
ifm - South Africa
Other technologies
The SU Puresonic Hygienic ultrasonic sensor from ifm detects flows of conductive and non-conductive media with high precision.
Read more...
Fault analysis for lifting equipment
Other technologies
Ensuring the sustained performance of capital equipment such as crane rails, ropes, hoist rails, gantry rails, and runway beams, which guide lifting equipment and support heavy loads, is essential for safety, reliability, and efficient operation.
Read more...
Bringing true mobile welding capability to SA agriculture
Other technologies
Bolt and Engineering Distributors has launched the new Fronius Ignis Battery. This is a next-generation, battery-powered welding system engineered for mobility, reliability and performance in off-grid agricultural environments.
Read more...
printer friendly version