A. Product Overview

The Autonics AS80-50DP3 is an industrial inductive proximity sensor designed for applications requiring a longer sensing distance than conventional proximity sensors.

Its rectangular 80 mm frame provides a sensing distance of up to 50 mm when used with the specified standard iron target. This allows metal objects to be detected without physical contact between the target and sensor.

The AS80-50DP3 uses a PNP output configuration and provides both Normally Open and Normally Closed outputs, giving machine designers greater flexibility when integrating the sensor with PLCs, controllers, relays, and automation equipment.

Key Specifications

• Brand: Autonics

• Model: AS80-50DP3

• Product Type: Inductive Proximity Sensor

• Sensor Type: Long Distance Proximity Sensor

• Shape: Rectangular

• Sensing Type: Upper Sensing Type

• Frame Size: 80 mm

• Sensing Distance: 50 mm

• Recommended Setting Distance: 0 to 35 mm

• Standard Sensing Target: 150 x 150 x 1 mm iron

• Output Type: PNP

• Output Operation: Normally Open and Normally Closed

• Wiring Type: DC 4-wire

• Rated Power Supply: 12 to 48 VDC

• Operating Voltage Range: 10 to 65 VDC

• Response Frequency: 30 Hz

• Current Consumption: Maximum 20 mA

• Control Output Capacity: Maximum 200 mA

• Hysteresis: Maximum 15 percent of sensing distance

• Residual Voltage: Maximum 2 V

• Protection Rating: IP67

• Operating Temperature: minus 25°C to 70°C

• Storage Temperature: minus 30°C to 80°C

• Operating Humidity: 35 to 95 percent RH

• Approximate Weight: 470 g

The AS80-50DP3 is particularly useful where standard short range proximity sensors cannot provide enough clearance between the sensor and detected metal object.

B. Working Principle

The Autonics AS80-50DP3 works on the inductive proximity sensing principle.

An inductive proximity sensor generates an electromagnetic field around its sensing surface. When a metallic object enters this field, electrical currents called eddy currents are generated inside the metal target.

These currents change the condition of the sensor's internal oscillator. The electronic circuit detects this change and switches the output signal.

The basic working sequence is:

1. Power is supplied to the AS80-50DP3.

2. The sensor creates an electromagnetic detection field.

3. A metallic target approaches the sensing surface.

4. The metal interacts with the electromagnetic field.

5. The sensor detects the resulting change.

6. The internal switching circuit activates the PNP output.

7. The output signal can be sent to a PLC, relay, controller, or automation system.

Because detection is non contact, the sensor does not need to physically touch the object.

Example

Suppose a steel plate moves along a conveyor.

The AS80-50DP3 is installed above the conveyor and connected to a PLC.

When the steel plate enters the sensor's detection zone, the proximity sensor detects it and changes its output state. The PLC can then:

• Stop the conveyor

• Count the object

• Activate another machine

• Start a process

• Trigger an alarm

• Operate a pneumatic cylinder

• Confirm that the component is correctly positioned

This makes proximity sensing extremely useful for automated manufacturing processes.

C. Why Is Autonics AS80-50DP3 Used?

The Autonics AS80-50DP3 long distance proximity sensor is used when metallic objects need to be detected reliably without physical contact.

Its key advantage is the 50 mm sensing distance, which allows greater clearance between the sensor and target.

This can be important where the detected object:

• Moves rapidly

• Vibrates

• Cannot pass close to the sensor

• Has positioning variation

• Could physically damage a conventional mechanical limit switch

• Needs to be detected without contact

Common Applications

The AS80-50DP3 can be used for:

• Metal object detection

• Machine position detection

• Conveyor systems

• Material handling systems

• Automated production lines

• Packaging machinery

• Assembly machines

• Steel processing equipment

• Automotive manufacturing

• Factory automation

• Industrial machinery

• Component presence detection

• Position confirmation

• Object counting

• End position detection

• Machine sequencing

• Robotic automation systems

• PLC based automation

• Warehouse automation

• Transfer machines

Why Use a Proximity Sensor Instead of a Mechanical Limit Switch?

A mechanical limit switch generally requires physical contact with the moving object.

An inductive proximity sensor detects metal without direct mechanical contact.

This can provide several practical advantages:

• Reduced mechanical wear

• No physical contact with the target

• Suitable for repetitive machine cycles

• Fast electronic switching

• Easier integration with PLC systems

• Better suitability for automated production

• Reduced maintenance associated with mechanical contacts

D. Suitable Buyers

The Autonics AS80-50DP3 50mm PNP Proximity Sensor is suitable for:

• Industrial automation companies

• Machine manufacturers

• OEM machine builders

• Control panel manufacturers

• System integrators

• PLC programmers

• Automation engineers

• Electrical engineers

• Factory maintenance teams

• Manufacturing plants

• Conveyor manufacturers

• Packaging machine manufacturers

• Material handling companies

• Automotive equipment manufacturers

• Steel processing industries

• Production line manufacturers

• Robotics integrators

• Industrial equipment manufacturers

• Process automation companies

• Maintenance and replacement departments

It is especially suitable for users looking for a PNP long distance inductive proximity sensor with 50 mm sensing distance and simultaneous Normally Open and Normally Closed output.

Frequently Asked Questions

1. What is the Autonics AS80-50DP3?

The Autonics AS80-50DP3 is a rectangular inductive proximity sensor designed for long distance non contact detection of metallic objects in industrial automation applications.

2. What is the sensing distance of AS80-50DP3?

The rated sensing distance is 50 mm when used with the specified standard sensing target.

3. Is AS80-50DP3 a long distance proximity sensor?

Yes. The AS series is designed for long distance inductive sensing, and the AS80-50DP3 provides a sensing distance of up to 50 mm.

4. What type of objects can AS80-50DP3 detect?

It is an inductive sensor, so it is designed primarily for detecting metallic objects.

5. Can AS80-50DP3 detect plastic?

Inductive proximity sensors are designed for metallic target detection. Plastic itself is generally not an appropriate detection target for this sensor.

6. Can AS80-50DP3 detect iron?

Yes. Iron is a suitable target material.

The specified standard sensing target is 150 x 150 x 1 mm iron.

7. What output does the AS80-50DP3 have?

The sensor has a PNP output.

8. Is the AS80-50DP3 Normally Open or Normally Closed?

It provides both:

• Normally Open output

• Normally Closed output

This allows greater flexibility when integrating the sensor into an industrial control circuit.

9. Is AS80-50DP3 an NPN or PNP sensor?

The AS80-50DP3 is a PNP proximity sensor.

A different model should be selected when an NPN output is required.

10. What is the power supply of AS80-50DP3?

The rated power supply is 12 to 48 VDC.

11. What is the operating voltage range?

The operating voltage range extends approximately from 10 to 65 VDC.

12. How many wires does AS80-50DP3 use?

The AS80-50DP3 is a DC 4-wire proximity sensor.

13. What is the frame size of the sensor?

The sensing side uses an approximately 80 mm frame size.

14. What is the recommended setting distance?

The specified setting distance is approximately 0 to 35 mm.

For reliable industrial operation, the practical installation distance should be selected with appropriate margin rather than operating continuously at the absolute sensing limit.

15. What is the response frequency?

The response frequency is approximately 30 Hz.