PAO NLMK (Public Joint Stock Company), the town of Lipetsk.

26.11.2024

Upgrading of control system for a roller conveyor cart of continuous-casting plant 4,6.

The engineers of ASC company have finished the works on upgrading the electrical equipment for a roller conveyor cart of continuous-casting plant 4,6. As part of the works mentioned, the power equipment, the control system, based on a contactor-relay circuit involving the use of DC converters Simoreg DC, was upgraded to the up-to-date one.

Control modules «VARIANT DC», manufactured by ASC, were used for the operating DC converters of an armature circuit, while control modules Sinamics DCM CM by Siemens were used for the standby converters.

The sections manufactured by our enterprise, namely, СВПР-1300-460-УХЛ4, were used as a power part of converters for armature circuit control. The automation system is implemented with programmable logic controller Simatic S7-1500 and distributed peripheral ET 200SP by Siemens. Communication with electric drives and remote input/output stations is executed via Profibus network. The visual display system is implemented on basis of SCADA-system Simatic WinCC. The diagnostic and archiving system is implemented with IBA PDA tools.

The upgrading allowed to:

  • — achieve flawless operation thanks to removal of obsolete equipment from service;
  • — reduce risk of equipment downtimes;
  • — enhance unification of equipment;
  • — increase efficiency and comfort of work of process and maintenance personnel. 
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