Develop test ladder program for rotating stepper motor in forward and reverse direction at constant speed

Aim

Develop test ladder program for rotating stepper motor in forward and reverse direction at constant speed.

Apparatus Required

PLC software, NO and NC switches.

Procedure

1. Load the RS Logix software to the PC.
2. Open the RS Logix software.
3. Switch On the PLC trainer.
4. Open the New project and draw the ladder logic program.
5. Compile the program.
6. Run the Program.
7. Give force and observe the output.

Concept structure:

Ladder diagram : (Forward Direction)

Explanation:

Ladder diagram : (Reverse Direction)

Explanation:

Observation:

Clockwise motion:

Anticlockwise motion::

Conclusion

1. The time delay controls the-----------------------------(speed/direction) of stepper motor.
2. The stepper motor rotates-----------------------------(in step/ continuously).

Viva Questions

1. Explain operating principle of stepper motor.
2. Define step angle.
3. Define scanning cycle.
4. Define speed of execution.
5. List out four industrial applications of stepper motor.
6. Compare DC motor and stepper motor.