The winding installations are scheduled to start production in spring 2010.

The Shandong Yuncheng mine will use the shafts for production and services to produce 2.4 million tonnes of coal per year.

For the new winding machines, Siemens is supplying the drives, the automation equipment, including a safety system, as well as the braking systems.

Each of the winding machines will be fitted with a 3500kW synchronous motor and, for the power supply, Sinamics SM150 DC link voltage converters will be used, each with an output of 10MVA.

Simatic S7-400 programmable logic controllers will form the heart of the automation system. The drives will be controlled by means of the FM458 Simatic application module.

For safety reasons, the control and monitoring system will have a two-channel design. The signals of the two channels will be compared with each other continuously. An error will trigger the safety circuit, which will then immediately stop the drives and apply the safety brakes.

The braking system will be sub-supplied by Siemag M-Tec², and the winder machines by Citic Heavy Machinery.

Siemens is also responsible for system integration, supervision of the assembly work, commissioning and customer training for the complete electrical equipment and braking system.