DESIGN OF AUTOMATION TEMPERATURE CONTROL IN HEATING TANK (PLASTIC OVEN OVEN) WITH 5 KG CAPACITY USING PLC CONTROL

Industrial automation systems have the most important role to increase the efficiency and quality of an industry. One of them is the plastic pellet heating tank system which is used to heat plastic pellets to a certain temperature so that they can be used for making plastic-based equipment, in the previous equipment still using a manual heating tank, especially for determining the temperature and heating process for plastic pellets. this matter greatly causes loss and wasted time as well as less effective and efficient on the workers themselves. This research aims to create an automatic heating tank system in the plastic pellet production process. This section has designed tools and systems for automation and temperature control on tank heaters using Programable Logic Control (PLC) type zelio logic SR3PACK2FU as the main controller. The research was carried out using a PT 100 RTD temperature sensor connected to the control and inserted into a stainless tube to detect the temperature, namely with a temperature value of 0ºC - 400 ºC, which is to detect the temperature of plastic pellets, a temperature of 50ºC - 100ºC is needed for a capacity of 5 kg of heated plastic pellets using an automatic stove and an electric lighter as a source of fire which is used for heating the stainless tube and then displaying the output into smart relay or liquid crystal display 16 × 2 which is made with logic technology that works by reflecting the light around it and then displaying letters, numbers, and graphics and when the temperature of the plastic pellets has reached 50ºC - 100ºC, the heater will stop and the lower valve opens automatically