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VACON 100 X drive for RM’s compact crushers

Austria-based RUBBLE MASTER HMH GmbH (RM) has selected the VACON 100 X AC drive from Danfoss Drives to control its new mobile crusher, the ‘RM V550GO!’.

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The RM V550GO! mobile compact crusher in operation
The RM V550GO! mobile compact crusher in operation

Located in Linz, RM develops and manufactures mobile compact crushers and mobile screens that are used globally. RM claims its crushers are cost-effective, simple to transport and operate, and can be used anywhere thanks to their compact size, low noise level and dust emissions.


RM’s crushers have been designed to enable construction companies and disposal operations to process small to medium quantities of waste building materials themselves, wherever and whenever they want, in a cost-effective manner.


Until recently, RM had used a custom-made drive up to 11 kW to control the motors of the vibrating conveyor of its crushers. However, for its new crusher design, it needed a 15 kW drive, which could withstand demanding environments.


Gerald Hanisch, CEO from RM explained: “As our mobile crushers are used all around the world, we needed a robust drive which endures a wide range of operating temperatures, and is able to withstand dust, moisture, humidity and vibrations. Additionally, the drive must tolerate high altitudes.”


RM uses VACON 100 X drives in its new RM V550GO! to control two unbalanced motors in parallel. These motors run a vibrating conveyor that transports the material to be crushed (such as demolition material) to the crushing section. CAN bus is used for communication with the internal control system.


It is claimed that the VACON 100 X fits perfectly and provides all the features RM needs within one standard drive. Due to the IP66 rating, RM was also able to remove the extra enclosure that was required by the previous solution.


Now RM is also considering replacing the customised solution used in its existing products with VACON AC drives. In addition, it is also planning to start using VACON AC drives to control other parts of its machines.


The VACON 100 X represents the concept of decentralised drives – products that can be mounted directly on the motor or machine or wherever the most convenient location for the drive is.


Significant savings can be achieved in cabling costs, space and energy when the installation does not require the drives to be mounted in a separate electrical room or enclosure.


A die-cast metal enclosure provides the best protection available, and a breathable Gore vent protects the sealings and a heatsink cooling system which isn’t dependent on motor airflow. In addition, it has built-in harmonic filtering chokes, making it an ideal motor-mountable solution for many applications.


“We received all the service and support we needed during our testing and piloting phase, and we are very happy and satisfied with the solution,” Hanisch concluded.


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