Abstract: This paper explains the control of injector test stand machine. The injector test machine is used to test the injectors in the industry as per requirements. HA290 Harritadge injector test stand was designed for Cummins india Ltd. to test the output of Cummins made injector.This injector test machine is currently controlled by an electronic card and relay system .Since this machine is 36 years old it’s service is not available for electronic parts, hence it’s maintenance is very difficult also it is very difficult to replace all electronic card with new electronic card. We can replace the electronic card with PLC technology. One can make better use of PLC in the design of Injector Test Stand Machine. This control is based on the input that is received from the operator as well as from the sensors. PLC control system is requiring to control all the functions of the injector test stand machine. The ladder logic programming will be used to simulate the proposed system. Because of use of PLC, systems are getting better, faster, Operator can read the measurements of injector accurately.PLC kit will be used to check parameters which affect injector output. Hence it is decided to design PLC operated injector test stand machine.
Keywords: PLC, solenoid valve, injector, proximity sensor, LVDT, motor.
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