Drives and Control Solutions

Motors, Control Solutions, Power Transmission and Advanced Motion Technology                                                                 

March 18, 2020

The WEG drive system, consisting of 5000KW 4160V 8-pole W60 induction motors, MVW01 medium voltage drives with input panel, control a semi-autogenous mill (SAG) at the Meliadine mine in the Nunavut territory, Northern Canada.

The SAG mill is one of the main pieces of equipment on the site, responsible for the grinding process of the extracted ore and, therefore, requires the equipment used for its propulsion and control to have very high reliability and availability.

The combination of WEG induction motor and frequency inverter deliver a simple, versatile and reliable solution to the customer, reducing maintenance needs and downtime, as well as the implementation of various protections and overall process optimization.

The frequency inverter ensures smooth operation without mechanical stress or impacts on the grid during startup and operation. Through its speed control, the inverter enables the mill to operate at the optimum operating point of the system, providing higher grinding quality and offering significant energy savings.

 

The WEG MVW01 medium voltage frequency inverter, selected for its modern and simplified construction, thanks to the use of medium voltage power components and WEG's 30 years of experience working with frequency inverters, also has specific functions that have improved the process and avoid common problems in this type of application such as:

  • Frozen Charge function (detection & release): prevents damage to the mill structure due to the possibility of material sticking to the mill structure wall at the time of start-up;
  • Positioning Function: Fast and automatic positioning of the mill based on angle or linear reference, and allows creeping at low speeds to facilitate component maintenance and replacement.
  • Roll Back Function: The inverter automatically controls the mill's return smoothly to the rest position where speed and torque are zero and with the mill balanced.

weg_logo_blue_with_red_leaf_Revised_Oct_152019_002.jpg

In addition to the proven technical expertise for this type of application, WEG has also shown the ability to meet customer agreed delivery times, another critical point in this supply due to the weather conditions in this region. In winter, the local temperature can reach -48°C and, due to the polar climate, transportation by ship to the site is only possible during few weeks of the year.

Due to the low temperature, the storage, installation and commissioning of equipment were also a challenge apart. WEG has the important advantage of being able to perform all the necessary tests for the complete system in Jaraguá do Sul (SC), Brazil, the main manufacturing site of its medium voltage equipment. These tests, which can be performed in different laboratories up to 20 MVA, require all the equipment to be previously interconnected, verified and placed under nominal load, allowing the identification and resolution of some difficulties normally encountered only at the time of installation on the customer’s site. As a result, the entire installation and commissioning process was completed in a very short time and quite successfully.

About WEG Canada / V.J. Pamensky

WEG is acknowledged today as one of the largest manufacturers of electric motors, controls and transformers in the world. WEG provides complete industrial automation solutions using the most modern hardware and software tools available in the market.Delivering to many renowned companies, we call special attention to the supply of automation systems for applications in Siderurgy (Laminators), Energy (Substations and Energy Co-generation Systems), Food, Pulp and Paper (Paper Machines), Civil Construction (Intelligent Buildings), Water and Sanitation (Sewage System and Water Pumping) and Ports.An accentuated trend in the past few years, communication networks allow fast exchange of information. These programmable controllers allow information exchanges in various communication protocols, like Profibus, DeviceNet, ModBus, among others.

V.J. Pamensky Canada Inc. was founded in Toronto, Ontario in September 1977 as the exclusive importer of WEG Electric Motors, Controls and Transformers into Canada. The original inventory was small, as were the premises, but these products quickly found a place in the Canadian industrial market. From these beginnings, growth came rapidly, resulting in successive moves to different locations in order to meet the demands for increased inventory and service.Today, V.J. Pamensky Canada Inc. is one of the largest importers of electric motors and controls in Canada with offices and warehouses across the country. V.J. Pamensky Canada Inc. has probably the largest inventory of any Electric Motor and Control Company in Canada. V.J. Pamensky Canada Inc. offers 24 hour emergency service, and will customize and modify products to meet the Customer’s most demanding specifications.

Visit WEG Canada 

 

 


Editor's Pick: Featured Article


BrakingResistor1When designing a motor control system, it is not always clear if a braking resistor is required and, if it is, how to proceed in selecting a braking resistor. This post is intended to simplify that process so it is clear when and how to select a braking resistor for your application. 

Why are braking resistors necessary?

Braking resistors are introduced into a motor control system in order to prevent hardware damage and/or nuisance faults in a VFD. They are required because in certain operations, the motor controlled by the VFD is acting as a generator and power is flowing back towards the VFD, rather than towards the motor. 

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           Partnering For The Next Step                

Siemens CanadaWelcome to the Digital Enterprise Virtual Summit brought to you by Siemens

How quickly can you react to changing conditions and demands in your market? How can you ensure your production will run securely at any time in the future?

Industry’s digital and technological transformation is the answer for meeting today’s and tomorrow’s challenges and market needs.

With the right digitalization and automation solutions, expertise won from practical experience, and a partnership approach that benefits all involved parties.

To explore these possibilities, we’re bringing together top-level speakers, specialists and decision-makers from various industries and experts from Siemens

to the Digital Enterprise Virtual Summit under the motto “Partnering for the next step.”   

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Motor Feature


S6 VFD for Linear Motor ApplicationsThe Combivert S6 drive is a modern, compact and flexible servo amplifier that can be used across a wide range of applications. The drive controller provides optimum performance in torque, speed, and position control. The S6 has the ability to control AC induction motors, AC PM motors, and lastly linear motors. In this article, we will be focusing on linear motors and how they work, as well as the simplicity of controlling them with the Combivert S6.

 

 

 

 

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