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Highest safety level for mine winders
Update makes mine winder controller fit for the future
Nuremberg, Germany. Siemens has launched an update to its mine winder portfolio which brings its Winder Technological Controller WTC fully in line with the latest digitalization standards and the highest safety level available in the mining industry (SIL) 3. SIL is a method for determining potential risk to life and limb as well as to systems, devices and processes in the event of a malfunction. The rating method is based on the International Electrotechnical Commission standard IEC 61508. This update uses the Simatic S7-1500 and TIA Portal (Totally Integrated Automation) digitalization platforms. The new TIA-WTC controllers are compliant with most international standards including the German TAS (Technical Requirements for Shaft and Inclined Hoisting Equipment) and Chinese MA (Safety in coal mining). The first new WTCs are due to be installed on mine winders in China and the UK at the beginning of 2019.
The safety system integrated in the WTC winder controller is certified to SIL3 and is used primarily for speed and position monitoring depending on the operating mode and conveyance position in the shaft. To ensure mine winder safety, precise supervision of the sensors such as speed and position encoders or shaft switches has a decisive role to play in ensuring a system’s functionality. Certification was performed by the engineering and consultancy company DMT GmbH, owned by TÜV Nord, which specializes in the fields of mining, oil and gas, civil engineering and infrastructure and plant and process engineering.
Additional functions of WTC controllers include the continuous acquisition and collection of motor, converter, brake system and mine winder data. The collected data
is then downloaded to one of the Siemens Winder Competence Centers and analyzed as the basis for recommended preventive maintenance, which is in-lined with Industry 4.0.
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