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    Experimental study on energy consumption of temperature control by using on-off intelligent function
    (ICIC International, 2023) Pongswatd, Sawai; Sopha, Watcharapon; Asadi, Farzin; Smerpitak, Krit; Thepmanee, Teerawat
    In order to save electrical energy for on-off temperature control, a useful concept of on-off intelligent function to execute in a programmable logic controller (PLC) is presented. An implementation of PLC-based control system based on electric heating is also described as a case study to demonstrate the performance of the proposed function. IEC 61131-3-based ladder diagrams were created by using Studio 5000 software to run in the PLC modeled CompactLogix L30ER. Compared with the traditional on-off control action, the proposed on-off intelligent function can minimize energy consumption of a heater used in the implemented temperature control by 4.57%-6.65%.