The Simine portfolio for high-pressure grinding mills (HPGR) has been extended to include a new Load Share Controller. Plug-and-play functionality makes it available for immediate use. The webserver-based operator interface allows the process and production engineer to adapt the controller parameters at any time – whether on- or offline – and thus optimize the torque distribution. Programming skills or special equipment knowledge is not required.
The new Load Share Controller follows the established control scheme. During start of the HPGR, the controller is inactive. When a certain torque level has been reached, it takes over load share control. If the controller is not ready for use, for example, in the event of a disruption, the drives do not start. However, operation without load sharing is available; in this case, the drives take the speed reference from the mill automation.
The controller is already being used by one customer: KHD Humboldt Wedag, an OEM in the cement and mining industry, installed the controller in the framework of a grinding plant upgrade for Guinée Industries Ciments in Conakry/Guinea. Tests before and after optimization have demonstrated great benefits of the optimized controller for the mill. For example, the change in the roll gap and the roll pressure could be kept in a substantially smaller range.