Smoothly controlling the acceleration and deceleration of long conveyors reduces mechanical stress throughout all drive-train components and within the conveyor belt itself. This leads to longer lifetime for the belt and other drive components, increasing asset availability and lowering maintenance and operating costs. Having the flexibility to control the speed of long conveyors can help optimize the complete system, reduce bottlenecks and maximize the efficiency of a material flow process, resulting in operating cost savings.
Installing multiple motors on long conveyors is common practice. Apply drives to ensure load sharing between each motor for reliable operation and to maximize belt life. Danfoss drives include both Master-Master and Master-Follower control solutions for this. Selection of the control solution depends on the configuration of the conveyor drives on the conveyor. For example, you can mount all drives at the head end or drives at both the head and tail end.
Both approaches are easy to implement and have proven to be robust, reliable solutions for long conveyors.
For downhill conveyors, continuous regenerative braking operation is typically required. Here, an Active Front End (AFE) drive or alternatively a regenerative drive panel solution, using a standard 6-pulse drive with separate regenerative module, is the best solution to feed back energy when the conveyor runs downhill.
Intelligent control of electric motors by AC drives ensures that the mine and plant can cut equipment operating costs thanks to
Danfoss drives are used extensively on long conveyors in excess of 1-km length, which are common on bulk material applications on mine sites, processing plants and port facilities such as:
Fearless of the difficult conditions, rugged VLT® drives ensure efficient production of hard limestone
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An enclosed drive designed for demanding applications that includes options for Active Front Ends and low harmonic solutions.
Configured and assembled to meet your needs whether you need to control one or several motors.
Designed for a broad range of demanding applications, focusing on higher power sizes and system drives.
The VLT® AutomationDrive FC301 / FC302 is designed for variable speed control of all asynchronous motors and permanent magnet motors. It comes in a standard version (FC301) and an advanced high dynamic version (FC302) with additional functionalities.
MEXICO: Faced with the challenge of pumping stagnant water from depths of more than 400 meters, the Cerro Los Gatos mine opted for medium-voltage variable speed pump control using the VACON® 1000 drive from Danfoss. Drives were delivered and installed in the record time of 14 weeks from factory acceptance test.
VLT® Drives move a 10.5-km-long conveyor belt. Load sharing between drives transfers energy from downhill segments to the uphill parts.