ABOUT CONTROL TECHNOLOGIES INTERNATIONAL
CTI is a diversified electrical engineering, Research and Development Company conducting all work at its in-house manufacturing and research establishment.
CTI has established an excellent reputation as a high quality research and development company and manufacturer of electronic control devices. The main projects developed by CTI are in the field of Power Electronics and are associated with the electronic control of large mobile machinery such as large mine haul trucks and locomotives. CTI controls allow the extensive coal train infrastructure in Queensland and New South Wales to load and unload coal whilst maintaining constant low speed without manual assistance.
Other devices designed and manufactured by CTI include Interface units that allow operators to control various functions of a locomotive from one control panel. CTI has also developed and manufactured digital relay units for passenger trains, speed controllers and speed indicators.
In addition to the research and development of new electronics, CTI have an extensive business repairing electronic control units, power supplies, SCR stacks, phase modules and inverter units for the coal mining industry.
An ongoing part of CTI’s re-manufacture and repair work, is the repair and rebuilding of Komatsu auxiliary blower system components including auxiliary inverter panels. These are heavy duty electronic devices that are installed on the Komatsu 930E haul truck, which have been controlled by the GE1200 control card.
Through the experience gained over six years of repair work, CTI’s staff has isolated a number of flaws that are inherent in the existing auxiliary blower system. These flaws have most often lead to the failure of these components and the resulting necessary costly repairs not to mention the down time of plant and equipment.
To rectify the issues relating to the auxiliary blower system CTI was required to carry out the following tasks:
- The redesign of the electronic circuit board that is the control or heart of the unit and includes the programming of the new micro controller circuit.
- The redesign of the filter network. This network sets the quality of the power that is supplied to the inverter panel.