KEB servo drives selected for new hybrid mobile crushers

Austrian company Rubble Master is using COMBIVERT F6 servo drives from KEB Automation on its latest hybrid range of mobile crushers. The servo drives were selected due to their compactness, robustness, high efficiency and integrated safety functionality.

Rubble Master is a world leader in the design and manufacture of mobile crushers and screeners used in the mineral processing, aggregates and material recycling industries. Rubble Master is utilising the COMBIVERT F6 servo drive to control a three-phase asynchronous motor on its new 120GO series of hybrid crushers. The requirements at Rubble Master were that the servo drives should be robust, small, while at the same time being powerful and highly efficient. The 120GO hybrid crushers weigh in at 15 to 40 tonnes and rely on the COMBIVERT F6 size 7 version with an output of up to 200kW.

“We set standards in the electrification of mobile crushers and screeners and we’re going to do the same with hybrid systems. KEB is the right partner for this,” explains Markus Gaggl, chief technology officer at Rubble Master.

In combination with the three-phase asynchronous motors, the result is the perfect combination for Rubble Master. “By working with KEB, our customers benefit from lower service costs, for example, as an electric drive is significantly more efficient and less susceptible than hydraulic offerings from competitors,” says Gaggl.

Compact and water-cooled

When developing its new hybrid series of mobile crushers, Rubble Master had challenges with finding a suitable servo drive that was small enough and that could be water-cooled as the machines work in harsh, dirty environments.

As Jeffrey Ton, head of power train and controls at Rubble Master explains: “KEB had the perfect solution. For us, the important thing is that we can have it sensorless as well as having some safety features that are beneficial for our machine. Also, it’s [the F6] a bit smaller, which for us is the next step forward.”

“Building a prototype is always a bit of learning process. Of course, we had some problems initially but KEB was immediately there to help out. Together, we built a separate prototype to do some simulation and which solved our problems. Now we have the servo drive and the other components such as the electric motor in our machine.

“They [KEB] proactively ask how our machine is working afterwards. It’s not only doing the project but also later that you really do have the feeling that KEB wants to be a partner and not just a supplier, which is good for our business,” adds Ton.

The COMBIVERT F6 is a range of high performance single-axis drive controllers that are extremely compact, energy efficient and flexible for a wide variety of control applications in automated, safety-oriented machines. The drives provide optimal motor control in real time, as well as integrated safety functionality. The COMBIVERT F6 is 100% in-house designed and built by KEB Automation. The drives are available in seven different enclosure sizes and power ranges from 4kW up to 400kW.

The drives are air- or liquid-cooled and can be customised with a variety of design options to suit the specific application. Safety functionality can be selected in modules to suit the requirements of the machine. Typical applications include materials handling, textiles, plastics, processing technology, machine tools, food and beverage processing and packaging, robotics, woodworking, and renewable energy systems such as wind turbines.

Reduced power losses

Compared to its predecessor, the COMBIVERT F5, the F6 is much more compact, which helps reduce the space needed in control cabinets by up to 76 per cent. In addition, the innovative power stage design of the F6 reduces power losses by up to 50 per cent, which means KEB’s customers can design machines that are more compact, lighter and more cost effective with integral safety functionality.

In addition to the control of widely-supported motor types such as synchronous, asynchronous, permanent magnet, synchronous reluctance, linear, high-torque motor and high speed motor, the COMBIVERT F6 offers additional functions such as automatic anti-cogging and optimised torque pre-control for linear and non-linear kinematics. Motor operation with encoder feedback or encoderless ASCL/SCL for precise speed control is also possible.

As Markus Gaggl concludes: “We’re very proud to have KEB as our partner, especially when we are looking into the future and wanting to set new standards with hybrid systems.”

KEB (UK) Ltd

5 Morris Close
Park Farm Industrial Estate
Wellingborough
NN8 6XF
UNITED KINGDOM

+44 (0)1933 402220

info@keb.co.uk

www.keb.co.uk

More products
PI increases production space at HQ by 11,000 sq ft
Rising global demand for semiconductor chips requires investments in equipment that is needed for chip production. To meet these needs, ultra-precision motion control, nanopositioning, and precision automation equipment Physik Instrumente (PI) has increased its production space.
Farnell, NXP and Doulos present new Industry 4.0 webinar
Farnell has announced the launch a new global webinar covering ‘Automation and Edge AI for Industry 4.0’ in partnership with the Element14 Community, NXP and Doulos on Wednesday 24 August.
Needle valves receive ISO 15848-1 Class C low emissions certification
Parker Hannifin is unveiling a series of valves tested to ISO 15848-1 Class C, a standard that sets out the measurement, test and qualification procedures for fugitive emissions from industrial valves.
Thorite offers same-day hydraulic hose assembly service
Air and fluid power specialist Thorite has launched a same-day hydraulic hose assembly service to help customers reduce downtime and control costs.
Festo demonstrates bioreactor for large-scale photosynthesis of algae
Festo presented the PhotoBionicCell research project at the Hannover Fair – a bioreactor that enables the efficient and large-scale photosynthesis of algae.
Actuator increases accuracy and productivity of bagging machine
When end users of a precision bagging machine started using economical bags with inconsistent sizes, this impacted accuracy and productivity of the bulk bagging process.
World’s first e-chain made of 100% recycled material
Conserving resources and extending the product life cycle are the objectives of the new Igus cradle-chain E2.1.CG, which the company says saves 28% CO2 versus current e-chain production.
Siemens Congleton factory accelerates towards net zero goal
Siemens’ Congleton factory is on track to achieve carbon neutrality this year – eight years ahead of its original target.
Full speed ahead for a custom conversion
A vision for a customised camper van led Leigh McCarron to Minitec UK. Working together to Leigh realise his dream, Minitec advised on the choice of profile that would turn an old transporter vehicle into a customised ‘king of the road’ camper van.
Inductive sensors prove a ‘jack of all trades’ in bridge construction
When a specialist assembler of prefabricated bridges needed a rugged sensor for position sensing on its hydraulic cylinders, it turned to Contrinex.

Login / Sign up