Date of Publication :26th April 2018

Abstract: Lubrication is a technique employed in most of the steel industries that delivers controlled amount of lubricant to multiple points of rollers in order to perform a smooth operation. The manual lubrication system requires more manpower that leads to more downtime in production and maintenance. Meanwhile, the discrete wiring system leads to complication in the wiring. The proposed automatic dual line lubrication system using PLC sends a command to initiate lubrication cycle that pumps the lubricant to the entire first supply line and then signals a changeover valve to the second supply line. The pressure in the supply line is vented out and lubricant in the line is returned to the pump reservoir through lubrication filter. Thus the lubrication is done alternatively in both the lines to the bearings of rollers with a time interval of every 45 minutes. If any fault occurs during the lubrication cycle, the system will generate a fault message in HMI and gives a signal to alarm. Hence it overcomes the constraints that are associated with the manual and discrete wiring lubrication systems

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