Belajar Proximity Sensor & Mengkoneksikannya Ke PLC Omron

Summary

In this video, Hari Hidayat explains the fundamentals of proximity sensors and demonstrates how to connect them to an Omron PLC. The tutorial covers different types of proximity sensors, including inductive (for metal detection) and capacitive (for all materials), as well as shielded and unshielded surface types. Hari details sensor principles, detection distances, and proper installation for stable operation. He also provides a hands-on demonstration using an Omron E2E X3 D1N sensor, wiring it to the PLC, and creating a start-stop circuit with a lamp to showcase detection in real-time. The video is both educational and practical for industrial applications.

Takeaways

• 😀 Proximity sensors detect objects based on a predefined sensing distance.
• 😀 There are two main types of proximity sensors: inductive (detects metal) and capacitive (detects all objects).
• 😀 Proximity sensors can also be categorized by surface type: shielded (limited detection area) and unshielded (broader detection area).
• 😀 Detection distance is the range in which a sensor can identify an object; exceeding this distance means the object will not be detected.
• 😀 For stable operation, the effective sensing distance should be set at 70–80% of the sensor’s maximum distance.
• 😀 The Omron E2E-X3-D1N sensor used in the video is cylindrical, with a 3 mm detection distance, DC 12–24V power, and NPN normally open output.
• 😀 Wiring involves connecting brown to power and blue to the load, allowing proper PLC integration.
• 😀 Proximity sensors can be used as input devices for PLCs, for example, as a start button in a start-stop circuit.
• 😀 Indicators on the sensor (green/red lights) show detection status and maximum distance reached.
• 😀 Inductive sensors only detect metal objects, while capacitive sensors can detect both metal and non-metal objects.
• 😀 Proximity sensors are widely used in industrial machines and automation systems for object detection and process control.

Q & A

What is a proximity sensor and how does it work?

A proximity sensor is a device that detects objects based on a predetermined distance. It senses whether an object is within its sensing range without physical contact.

What are the two main types of proximity sensors mentioned in the video?

The two main types are inductive proximity sensors, which detect only metal objects, and capacitive proximity sensors, which can detect both metal and non-metal objects.

What is the difference between a shielded proximity sensor and a non-shielded (unshielded) proximity sensor?

A shielded proximity sensor has a detection area limited to the sensor surface and does not extend beyond its diameter, while an unshielded proximity sensor has a detection area that spreads beyond the sensor surface.

How is the detection distance of a proximity sensor defined?

The detection distance is the range from which the sensor can detect an object. If an object is beyond this distance, the sensor will not detect it.

Why is it recommended to use 70–80% of the sensor's maximum detection distance in practice?

Using 70–80% of the maximum detection distance ensures more stable operation by reducing the influence of factors like temperature and voltage fluctuations.

What does the model code 'E2E-X3-D1N' of an Omron proximity sensor indicate?

In this model code: 'E2E' refers to the proximity sensor type, 'X3' indicates a cylindrical sensor shape with threading, '3' is the detection distance in millimeters, 'D1' refers to DC 2-wire, and 'N' indicates an NPN normally open output.

How should the wiring of a proximity sensor be connected to a PLC?

For a 2-wire DC sensor, the brown wire is connected to the positive power supply, the blue wire to 0V, and the output is connected to the load or PLC input.

What happens when an inductive proximity sensor is used to detect a non-metal object?

An inductive proximity sensor will not detect a non-metal object because it is designed to sense only metal objects.

What are some indicators that a proximity sensor has detected an object?

The sensor typically has LED indicators, where green shows normal operation and red indicates the object is not within the maximum detection distance.

How can proximity sensors be used in PLC applications according to the video?

Proximity sensors can be used as input devices for PLCs to automate circuits, such as starting or stopping a machine, or turning on a lamp when an object is detected.

Why is understanding proximity sensor basics important in industrial applications?

Proximity sensors are widely used in industrial machines, and understanding their principles helps in selecting the right type, proper installation, and achieving reliable automation performance.