Electrical Troubleshooting MS is an educational application available for iPhone users. Developed by David White, this program aims to test and enhance your troubleshooting skills with 17 different starter problems. Whether you are a student or a professional in the field, this app provides a realistic experience of troubleshooting a 3 phase motor starter using a voltmeter and PLC logic.

One of the standout features of Electrical Troubleshooting MS is that it is completely free and does not contain any ads or pop-ups. Upon startup, the app is in normal mode, allowing users to understand how a reversing starter works, how to use virtual voltmeter probes to measure voltages at different test points in the control circuit, and analyze the PLC logic in various control modes such as Run, Off, and Auto.

Once users have familiarized themselves with the motor starter and control modes, they can test their troubleshooting skills by entering the troubleshooting mode. In this mode, a random problem is introduced into the control circuit, and users must determine if the motor will run with the selector switch in both Run and Auto modes. The app provides voltmeter probes and a PLC logic screen to assist users in identifying the problem. If users are unable to identify the problem, the app also offers a solution for reference.

Overall, Electrical Troubleshooting MS is a valuable learning tool for anyone interested in mastering the art of troubleshooting a three-phase reversing motor starter. Its user-friendly interface and realistic simulation make it an excellent choice for both beginners and experienced professionals in the field.