Variable frequency drive offers energy savings
August 2003
Motion Control & Drives
Mitsubishi Electric Automation is offering its FR-F500(L) Series variable rrequency drive (VFD). The F500 Series consists of units rated from 0,75 kW through 375 kW at 400 V a.c.
The series has been developed to support energy-efficient operation of normal duty operations, such as fan and pump motors. An optimum excitation current control program improves motor efficiency under the low-torque conditions that are typical of the applications. Second-order deceleration torque patterns bring the output voltage below the level of fixed-torque patterns. This conserves energy by matching the motor output with the second-order deceleration loads typical of fans.
Intelligent energy saving control is possible due to the microprocessor-based current monitor loop which tracks motor energy and minimises the inverter output voltage. This function is suited to constant-speed operation and augments the benefits of second-order deceleration patterns.
The optimum excitation-current control program modifies the basic variable-voltage control mode. The function monitors the motor current and modulates the output voltage boosting the induction motor efficiency in the low-torque region typical of fan and pump motor applications.
Other advances include two parameter setting modes where the simple mode displays only essential parameters. Parameter copy functionality is built into the standard display panel as is RS485 communication. Maintenance has been simplified by the addition of removable terminal connectors, replaceable fan cassette and fan on/off control. The I/O terminal block provides a jumper setting for sink-source switching. The F500 (L) complies with UL, cUL, EN and ISO 9001 standards.
CBI, distributors of Mitsubishi Electric products, offers a comprehensive range of automation and motor control solutions. Products include programmable logic controllers (PLCs), variable speed drives (VSDs), human machine interfaces (HMIs), motor control and switchgear (MC&SW) as well as air circuit breakers (ACBs), for a broad range of applications.
For more information contact Eddie Milne, Circuit Breaker Industries, 011 928 2000, [email protected], www.cbi.co.za
Further reading:
Solving common automation challenges with Festo’s servo drive and servo motor solutions
Festo South Africa
Motion Control & Drives
Automation projects face challenges that include limited installation space, the need for precise and repeatable linear motion, rising cycle-speed demands, and seamless integration with existing control architectures. Festo’s servo portfolio directly addresses these issues with compact, modular drive and motor solutions designed for specific applications.
Read more...
Inside the Giant Magellan Telescope with mechanical engineering at astronomical scale
Motion Control & Drives
Construction of the Giant Magellan Telescope, set to become the world’s largest Gregorian optical infrared telescope, is well underway. While its scientific mission is to transform astronomy, its performance depends heavily on advanced mechanical, hydraulic and pneumatic engineering.
Read more...
Filtration as a reliability driver in motion control systems
Parker Hannifin - Sales Company South Africa
Motion Control & Drives
This article highlights the importance of filtration in motion control systems, how contamination affects performance, and what fleet managers, operators and maintenance teams in southern Africa can do to reduce downtime, avoidable wear and costly repairs, aided by Baldwin Filters.
Read more...
Supporting construction of next-gen floating offshore wind turbines
Motion Control & Drives
While windy locations naturally make ideal spots for offshore wind farms, they bring challenges when it comes to assembling wind turbines, particularly in ports. Mammoet was approached by Euroports to support with the marshalling and assembly of the components that make up the three turbines at Port-la-Nouvelle in France.
Read more...
Rollers excel where profits balance on a knife edge
igus
Motion Control & Drives
Polymer component specialist manufacturer, igus has developed a range of lubrication-free long-life knife edge rollers designed to improve the transfer of products between conveyor belts in high-speed production environments.
Read more...
Bringing physical AI to the factory floor by deploying humanoids in industrial operations
Siemens South Africa
Motion Control & Drives
Siemens and Humanoid have marked a landmark milestone in the journey to bring physical AI from vision to industrial reality. Humanoid’s humanoid robothas been successfully tested in operations at Siemens’ electronics factory in Germany, performing autonomous logistics tasks.
Read more...
Next-generation oil-free motor systems with active magnetic bearings
WEG Africa
Motion Control & Drives
WEG and SpinDrive are collaborating to integrate SpinDrive’s AMBs and built-in IoT condition monitoring into WEG’s market-leading electric motor offering, creating an oil-free, maintenance-free drive solution.
Read more...
Rising demand for advanced coolant technology
Motion Control & Drives
As modern engines become smaller, more powerful and increasingly complex, coolant technology has undergone a fundamental transformation.
Read more...
Addressing cost, supply and disease pressures in Africa’s feed industry
Motion Control & Drives
Feed producers across Africa are operating in an increasingly complex and volatile environment. The pressures are forcing producers to rethink how they operate, balancing cost control, production efficiency and the need for greater flexibility in an unpredictable market.
Read more...
Rapid headframe replacement for Canada’s biggest potash mine
Motion Control & Drives
Mammoet has supported Ledcor with the construction of BHP’s new Jansen potash mine.
Read more...
printer friendly version