Siemens has extended the Simine portfolio for high-pressure grinding mills (HPGR) to include a new controller. Plug-and-play functionality makes the load share controller available for immediate use. The web-server based operator interface allows the process engineer at any time (on-line and off-line) to adapt the controller parameters and thus optimise the torque distribution. The controller it is already being successfully used by one customer, where tests done before and after optimisation have demonstrated significant benefits for the mill.
The new controller follows an established scheme. During startup of the HPGR, it is inactive, but once a certain torque level has been reached, the controller takes over the load share regulation. If the controller is not ready for use, for example in the event of disruption, the drives do not start. However, operation without load sharing is available and in this case the drives take the speed reference from the mill automation.
Variable load distribution
The load distribution between the rollers in an HPGM is generally 50:50. The master follows the speed command and the slave follows the torque of the master. If an alternative load distribution is required, it is possible to change the load distribution between the drives using the load distribution factor. The reference torque on the slave drive is then decreased or increased compared to the reference torque of the master drive. At the same time, the load share controller maintains the speed difference between the rolls within given limits. Via the web-server based operator interface, the process engineer can adjust the load share factor and limitation for speed difference at any time – even during grinding operation.
The plug-and-play system is supplied fully tested and ready for use. The webserver functionality allows the process and production engineers quick and easy access to the parameters of the controller. Programming skills or special equipment knowledge is not required.
Successful utilisation
KHD Humboldt Wedag, an OEM in the cement and mining industry, is already using the load share controller in its Conakry project. Before and after tests show the benefits of using this controller: amongst other things, changes in the roll gap and roll pressure could be kept in a substantially smaller range.
Driving digital transformation in the truck industry Siemens South Africa
IT in Manufacturing
Tatra Trucks, a leading truck manufacturer in Czechia, has adopted the Siemens Xcelerator portfolio of industry software including Teamcenter software for product lifecycle management and the Mendix low code platform to help increase production volume and strengthen its ability to manufacture vehicles that meet specific customer requirements.
Read more...Automation in the energy and process industries
PLCs, DCSs & Controllers
For over 40 years, ABB has built and maintained a leadership position in the distributed control system (DCS) market by preserving its customers’ capital investments while providing new capabilities.
Read more...Enhancing cyber security for industrial drives Siemens South Africa
IT in Manufacturing
The growing connection between production networks and office networks as part of IT/OT integration and the utilisation of IoT have many benefits for industrial companies. At the same time, they also increase the risk of cyber threats. Siemens ensures that your know-how and plants are protected at all times.
Read more...Electromagnetic flow measurement Siemens South Africa
Flow Measurement & Control
The SITRANS FM electromagnetic flowmeters from Siemens deliver high-precision volume measurement of electrically conductive liquid applications – from water, wastewater and irrigation to hygienic processes and even mining slurries with magnetic particles.
Read more...New generative AI-powered maintenance offering Siemens South Africa
IT in Manufacturing
The Siemens Industrial Copilot is revolutionising industry by enabling customers to leverage generative AI across the entire value chain – from design and planning to engineering, operations and services.
Read more...Optimising the product design process Siemens South Africa
IT in Manufacturing
OPmobility is partnering with Siemens to adopt its Teamcenter X Product Lifecycle Management software. OPmobility’s increasingly complex products now include electronics and software, to create energy storage systems, which include battery and hydrogen electrification solutions and fuel tanks.
Read more...Siemens automation portfolio, your bridge to the industrial metaverse Siemens South Africa
IT in Manufacturing
Step into the future with Siemens’ automation portfolio, your bridge to the industrial metaverse. Our cutting-edge solutions integrate AI, digital twins and real-time simulation, driving smarter, more efficient production.
printer friendly version