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DAPPRA DPR-0420-NPN-NC Safety Light Curtain Industrial Area Sensor
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DAPPRA DPR-0420-NPN-NC is a 4-beam industrial area sensor with 20 mm optical axis pitch and 60 mm protection height. Through-beam infrared detection, NPN NC output, fast response time <5 ms, IP65 protection, ideal for machine protection and industrial automation applications.
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DPR-0420-NPN-NC Industrial Area Sensor
SKU: SD69
DAPPRA Automation
When an object enters the detection area and interrupts the infrared beams, the receiver detects the interruption and changes the sensor output according to the configured signal logic. The DPR-0420-NPN-NC is designed for machine protection and industrial automation applications, including CNC machines, packaging machinery, conveyor systems and robot peripheral protection. The product can also be described as a light curtain-type machine protection sensor, using multiple infrared beams rather than a single-point photoelectric detection method.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | DAPPRA |
| Manufacturer | DAPPRA Automation |
| Product Series | DPR Series |
| Model | DPR-0420-NPN-NC |
| SKU | SD69 |
| Product Category | Industrial Area Sensor |
| Related Product Type | Safety Light Curtain / Light Curtain |
| Detection Method | Through Beam Infrared Detection |
| Beam Quantity | 4 Beams |
| Optical Axis Pitch | 20 mm |
| Protection Height | 60 mm |
| Total Height (Housing) | 126 mm |
| Output Type | NPN Output |
| Signal Logic | NC (Normally Closed) |
| Response Time | <5 ms |
| Power Supply | DC24V ±20% |
| Protection Rating | IP65 |
| Detection Distance | 0.2–3 m |
| Ambient Light Resistance | 10000 Lux |
| Operating Temperature | -10°C to 55°C |
| Cross Section | 29 × 30 mm |
Key Features
Through-Beam Infrared Detection
4-Beam Detection System with 20 mm Optical Axis Pitch, The DPR-0420-NPN-NC uses an emitter and receiver structure to create a through-beam infrared detection field. With 4 optical beams and 20 mm optical axis pitch, the sensor provides a 60 mm protection height for industrial object detection and machine monitoring. The total housing height is 126 mm.
Technical Attributes
- Detection Method: Through Beam Infrared Detection
- Beam Quantity: 4 Beams
- Optical Axis Pitch: 20 mm
- Protection Height: 60 mm
- Total Height (Housing): 126 mm
Fast Response Time <5 ms
The DPR-0420-NPN-NC provides a response time of less than 5 ms, enabling rapid detection when an object interrupts the infrared beam. This feature supports automated equipment requiring fast signal processing and machine control response.
IP65 Industrial Protection
The DPR Series is designed for industrial environments with IP65 protection rating.
It provides resistance against:
- Dust exposure
- Water exposure
- Oil contamination
- High-humidity operating conditions
High-Humidity Industrial Environment
The DPR Series is suitable for industrial automation equipment operating in environments where humidity and contamination may occur.
Typical applications include:
- CNC machines
- Packaging machinery
- Conveyor systems
- Automated production equipment
Anti-Vibration and Anti-Interference Design
The DPR-0420-NPN-NC is designed for industrial environments affected by mechanical vibration and electrical interference. The design helps maintain stable operation in automation systems.
NPN NC Output Configuration
Output Type: NPN
Signal Logic: NC (Normally Closed)
Operating logic:
Normal beam condition: Signal output 0V
Beam interrupted: No output
Refer to the wiring diagram for connection details.
How Does the DPR-0420-NPN-NC Industrial Area Sensor Work?
Working Principle of DPR-0420-NPN-NC
The DPR-0420-NPN-NC Industrial Area Sensor uses a through-beam infrared detection method with an emitter and receiver. The emitter continuously sends multiple infrared beams toward the receiver to create a detection area. When an object enters the detection zone and blocks one or more beams, the receiver detects the interruption and changes the output signal according to the configured NPN NC logic.
Detection Process
- Infrared Beam Transmission — The emitter generates multiple infrared beams and sends them toward the receiver.
- Detection Area Creation — The multiple beams create a detection field. For DPR-0420-NPN-NC: Beam Quantity: 4, Optical Axis Pitch: 20 mm, Protection Height: 60 mm.
- Object Detection — When an object enters the detection area, one or more infrared beams are interrupted.
- Signal Output — The receiver processes the interruption and changes the output signal. DPR-0420-NPN-NC: Output Type: NPN, Signal Logic: NC.
Model Number Explanation
How to Read the DPR-0420-NPN-NC Model Number?
The model number of the DAPPRA DPR Series identifies the main technical configuration, including beam quantity, optical axis pitch, output type and signal logic.
Model Structure Table
| Model Code | Meaning | Description |
|---|---|---|
| DPR | Product Series | DAPPRA DPR Industrial Area Sensor Series |
| 04 | Beam Quantity | 4 optical beams |
| 20 | Optical Axis Pitch | 20 mm beam spacing |
| NPN | Output Type | NPN transistor output |
| NC | Signal Logic | Normally Closed |
Example: DPR-0420-NPN-NC means:
| Item | Value |
|---|---|
| Series | DPR Series |
| Beam Quantity | 4 Beams |
| Optical Axis Pitch | 20 mm |
| Output | NPN |
| Signal Logic | NC |
| Product Type | Industrial Area Sensor |
How to Select a DPR Series Industrial Area Sensor?
Select According to Application Requirements
The DAPPRA DPR Series provides different beam quantities and optical axis pitch configurations for various industrial detection requirements.
When selecting a suitable Area Sensor, consider the following parameters:
| Selection Factor | Explanation |
|---|---|
| Protection Height | Determines the vertical detection area required for the machine |
| Optical Axis Pitch | Determines beam spacing and detection resolution |
| Detection Distance | Select according to emitter and receiver installation distance |
| Output Type | Choose NPN or PNP according to controller input |
| Signal Logic | Select NO or NC according to control requirements |
| Installation Environment | Consider humidity, dust, vibration and interference conditions |
Understanding Protection Height
The protection height of an Area Sensor is determined by the number of optical beams and the optical axis pitch.
Protection Height = (Beam Quantity - 1) × Optical Axis Pitch
Example: DPR-0420-NPN-NC
Beam Quantity: 4 beams
Optical Axis Pitch: 20 mm
Calculation: (4 - 1) × 20 mm = 60 mm
Optical Axis Pitch: 20 mm
Calculation: (4 - 1) × 20 mm = 60 mm
DPR Series 20 mm Optical Axis Pitch Configuration
The DAPPRA DPR Series Industrial Area Sensor includes different configurations based on beam quantity, optical axis pitch, and protection height.
The complete DPR Series model selection chart is provided below as a technical reference. This table focuses on 20 mm pitch models, with the DPR-0420-NPN-NC highlighted.
| Model | Beam Quantity | Optical Axis Pitch | Protection Height | Output Type | Signal Logic |
|---|---|---|---|---|---|
| DPR-0420-NPN-NC | 4 | 20 mm | 60 mm | NPN | NC |
| DPR-0620-NPN-NC | 6 | 20 mm | 100 mm | NPN | NC |
| DPR-0820-NPN-NC | 8 | 20 mm | 140 mm | NPN | NC |
| DPR-1020-NPN-NC | 10 | 20 mm | 180 mm | NPN | NC |
Complete DPR Series Selection Chart (reference)
The complete selection table includes:
- 10 mm optical axis pitch models
- 20 mm optical axis pitch models
- 40 mm optical axis pitch models
- Different beam quantity options
- Corresponding protection height values
- DPR Series model numbers
NPN NC Output and Wiring
DPR-0420-NPN-NC Wiring
The DPR-0420-NPN-NC uses NPN NC output.
Signal Logic
| Condition | Signal |
|---|---|
| Normal beam transmission | 0V output |
| Beam interrupted | No output |
DPR-0420-NPN-NC SD69 WIRING DIAGRAM
Mechanical Dimensions
DPR-0420-NPN-NC Dimensions
- 60 mm protection height
- 20 mm optical axis pitch
- 29 × 30 mm cross section
- Total height (housing): 126 mm
DPR-0420-NPN-NC SD69 MECHANICAL DIMENSION DRAWING
Installation Methods
The DPR-0420-NPN-NC Industrial Area Sensor supports flexible installation methods according to different machine structures and protection requirements.
The sensor can be installed using:
- Standard Vertical Installation
- Side Installation
- Adjustable Bracket Installation
DPR-0420-NPN-NC Installation Methods
Standard Vertical Installation
The standard vertical installation method places the emitter and receiver vertically opposite each other to create a detection area.
Suitable for:
- CNC machines
- Press machines
- Machine entrances
- Safety protection areas
Side Installation
Side installation allows the sensor to be mounted according to machine structure limitations where standard mounting space is restricted.
Suitable for:
- Compact equipment
- Limited installation space
- Customized machine layouts
Adjustable Bracket Installation
The adjustable bracket installation method allows flexible positioning and alignment of the emitter and receiver.
Advantages:
- Easier alignment
- Flexible mounting angle adjustment
- Suitable for customized automation equipment
Industrial Applications
DPR-0420-NPN-NC Application Areas
The DAPPRA DPR-0420-NPN-NC Industrial Area Sensor is designed for industrial automation equipment requiring reliable object detection and machine protection.
With multi-beam infrared detection, fast response time and industrial protection features, the DPR Series can be applied in various automated production environments.
Typical applications include:
- CNC machines
- Press and hydraulic machines
- Packaging machinery
- Conveyor systems
- Robot workcells
DPR-0420-NPN-NC Industrial Application Overview
CNC Machine Protection
The DPR-0420-NPN-NC can be installed around CNC machining equipment to create a detection area for machine monitoring and protection applications.
Typical equipment:
- CNC machining centers
- Milling machines
- Turning machines
Press Machine Protection
The multi-beam infrared detection area of DPR Series sensors can be used around industrial press and hydraulic equipment.
Typical applications:
- Hydraulic presses
- Punching machines
- Metal forming equipment
Packaging Machinery
DPR Series sensors support object detection applications in automated packaging equipment.
Typical applications:
- Packaging lines
- Filling machines
- Automatic assembly systems
Conveyor System Detection
The DPR-0420-NPN-NC can be integrated into conveyor automation systems for object detection and machine control applications.
Typical applications:
- Material handling systems
- Production conveyors
- Automated logistics equipment
Robot Workcell Protection
The DPR-0420-NPN-NC can be installed around industrial robot workcells to create a multi-beam infrared detection area.
Typical applications:
- Robotic assembly cells
- Automated manufacturing lines
- Robot peripheral areas
Industrial Environment & Safety Performance
Designed for Demanding Industrial Automation Environments
The DAPPRA DPR-0420-NPN-NC Industrial Area Sensor is designed for demanding industrial automation environments where equipment may be exposed to humidity, water, oil contamination, mechanical vibration and electromagnetic interference.
The DPR Series provides reliable detection performance for industrial machine applications with:
- High humidity resistance
- Water and oil protection
- Anti-vibration design
- Anti-interference capability
- IP65 protection rating
The DPR-0420-NPN-NC is suitable for industrial equipment requiring stable operation in challenging manufacturing environments.
Industrial Environment Specification
| Parameter | Specification |
|---|---|
| Protection Rating | IP65 |
| Operating Temperature | -10°C to 55°C |
| Ambient Light Resistance | 10000 Lux |
| Environmental Features | Humidity Resistance / Oil Protection / Anti-Vibration / Anti-Interference |
Safety Light Curtain for Machine Protection
The DAPPRA DPR-0420-NPN-NC belongs to the Industrial Area Sensor / Safety Light Curtain category for machine protection applications.
Unlike single-point photoelectric sensors, the DPR-0420-NPN-NC uses multiple infrared beams between the emitter and receiver to create a detection zone.
The sensor provides:
- Multi-beam infrared detection
- Fast response time <5 ms
- NPN NC output configuration
- Machine protection applications
Product Compliance Documentation
DAPPRA DPR-0420-NPN-NC is supported by the following compliance documentation:
- CE Certification
- FCC Certification
- RoHS Compliance
Area Sensor vs Single-Point Photoelectric Sensor
| Feature | Area Sensor | Single-Point Photoelectric Sensor |
|---|---|---|
| Detection method | Multiple infrared beams | Single optical detection point |
| Detection area | Multi-beam area | Single point |
| Beam quantity | Multiple | Typically one detection beam |
| Typical use | Area detection and machine protection | Object presence / position detection |
| DPR Series | Yes | No |
Area Sensor vs Safety Light Curtain
The terms Area Sensor and Safety Light Curtain can overlap in industrial applications, but they should not automatically be treated as identical technical classifications.
An Area Sensor generally describes a multi-beam photoelectric detection device.
A safety-rated light curtain is normally associated with specific functional-safety requirements and applicable safety standards.
For the DPR-0420-NPN-NC page, DAPPRA should therefore clearly describe the product as:
Industrial Area Sensor / Safety Light Curtain for Machine Protection
Market Terminology Note: Safety Light Curtain vs Area Sensor in Indonesia
In the Indonesian industrial automation market, products like the DAPPRA DPR-0420-NPN-NC are commonly referred to as either a "Safety Light Curtain" or an "Area Sensor", depending on the specific application and user terminology.
While these two terms are often used interchangeably to describe similar light-beam sensing products, they should not automatically be considered identical from a technical and safety standards perspective. The appropriate choice of terminology—and the product itself—depends on several key factors:
- Required Safety Function: Does your application require personnel or equipment protection that meets a specific safety level, or is it for general object presence detection?
- Detection Resolution: What is the smallest object size that needs to be detected? This directly relates to the optical axis pitch (e.g., 20 mm for this product).
- Application Scenario: Is it for machine entrance safeguarding, or for object counting and positioning on a conveyor belt?
- Output Configuration: Does your control system require an NPN or PNP output?
- Applicable Safety Standards: Does the product possess the necessary safety certifications to support your safety claim?
For the DPR-0420-NPN-NC, it combines the multi-beam detection flexibility of an "Area Sensor" with the machine protection capabilities of a "Safety Light Curtain." Therefore, in the Indonesian market, it can be effectively positioned and applied as either a high-performance area sensor for automation control or as a reliable safety light curtain component for integration into machine protection systems.
Choosing the correct terminology helps ensure clear communication with suppliers, integrators, and end-users, ensuring the product is correctly applied to its intended scenario. For more details on specific applications, please refer to the Industrial Applications section above.
Parameter Dictionary
Optical Axis Pitch
The distance between adjacent optical detection beams.
DPR-0420-NPN-NC: 20 mm
Beam Quantity
The number of optical beams used to form the detection field.
DPR-0420-NPN-NC: 4 beams
Protection Height
The vertical detection height created by the optical beam arrangement.
DPR-0420-NPN-NC: 60 mm
Total Height (Housing)
The overall height of the sensor housing including end caps.
DPR-0420-NPN-NC: 126 mm
Detection Distance
The distance between the emitter and receiver within which the sensor operates.
DPR-0420-NPN-NC: 0.2–3 m
Response Time
The time required for the sensor to respond to a detected beam interruption.
DPR-0420-NPN-NC: <5 ms
NPN Output
A transistor output configuration used for connection to industrial control systems such as PLC inputs.
NC Signal Logic
Normally Closed signal logic. For the specified DPR-0420-NPN-NC configuration, normal beam transmission produces the specified 0V signal condition, while beam interruption removes the output.
DAPPRA Automation — Industrial Sensor Manufacturer
DAPPRA Automation is an industrial automation manufacturer and platform providing industrial control components, sensors, drives and supporting components for automation applications.
The DPR Series Industrial Area Sensor is manufactured by DAPPRA's own production facility, supporting consistent product quality control and customized production requirements.
OEM & ODM Services
DAPPRA provides OEM and ODM manufacturing services based on customer designs, specifications or samples.
OEM & ODM support includes:
- Product customization
- Manufacturing based on customer requirements
- Customized industrial automation solutions
Global Service Markets
DAPPRA provides industrial automation products and OEM/ODM services for customers in:
- Indonesia
- Vietnam
- Russia
Factory Production Capability
Technical Resources
Download technical documents for the DAPPRA DPR-0420-NPN-NC Industrial Area Sensor, including datasheet, CAD drawing and installation guide.
DPR-0420-NPN-NC Datasheet
Technical specification document including product parameters, working principle, wiring information, dimensions, certifications and application details.
DPR-0420-NPN-NC Installation Guide
Installation reference showing mounting methods, vertical installation, side installation and adjustable bracket installation.
DPR-0420-NPN-NC CAD Drawing
Mechanical drawing resource for engineers, including product dimensions and installation reference for machine integration.
Engineering FAQ
The following FAQ provides technical information about the DAPPRA DPR-0420-NPN-NC Industrial Area Sensor, including product specifications, output configuration, applications, environmental performance and certification information.
What is the DAPPRA DPR-0420-NPN-NC?
+
The DAPPRA DPR-0420-NPN-NC is a DPR Series Industrial Area Sensor designed for machine protection and industrial automation applications.
Features: 4 beams, 20 mm pitch, 60 mm protection height, 126 mm total housing height, NPN NC output.
What is the SKU of the DPR-0420-NPN-NC?
+
The SKU of the DPR-0420-NPN-NC is: SD69
What does DPR-0420-NPN-NC mean?
+
DPR = DAPPRA DPR Series, 04 = 4 Optical Beams, 20 = 20 mm Optical Axis Pitch, NPN = NPN Output, NC = Normally Closed Signal Logic.
What is the detection distance of the DPR-0420-NPN-NC?
+
The DPR-0420-NPN-NC has a detection distance of 0.2–3 m.
How many beams does the DPR-0420-NPN-NC have?
+
The DPR-0420-NPN-NC uses: 4 infrared optical beams.
What is the optical axis pitch?
+
The optical axis pitch is: 20 mm.
What is the protection height?
+
The DPR-0420-NPN-NC provides: 60 mm protection height. Calculation: (4 - 1) × 20 mm = 60 mm.
What is the total height of the DPR-0420-NPN-NC housing?
+
The total height of the sensor housing is 126 mm.
What is the detection method?
+
The DPR-0420-NPN-NC uses: through-beam infrared detection.
What is the response time?
+
The response time is: <5 ms.
What is the IP rating of the DPR-0420-NPN-NC?
+
The DPR-0420-NPN-NC has an IP65 protection rating.
What is the operating temperature?
+
The operating temperature range is -10°C to +55°C.
What output does the DPR-0420-NPN-NC use?
+
The DPR-0420-NPN-NC uses: NPN NC output configuration.
What does NC mean?
+
NC means Normally Closed. Normal beam condition = 0V output, beam interruption = no output.
What is the power supply?
+
The power supply is: DC24V ±20%.
How should the DPR-0420-NPN-NC be wired?
+
Refer to the official DAPPRA wiring diagram. Includes DC24V power, M12 connector, NPN NC output.
Can the DPR-0420-NPN-NC be connected to a PLC?
+
Yes. The NPN NC output can be connected to compatible PLC input circuits.
Can the DPR-0420-NPN-NC be used in humid environments?
+
Yes. Designed for high humidity, water, oil protection with IP65 rating.
Is the DPR-0420-NPN-NC resistant to oil?
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Yes. The DPR Series is designed for environments where oil contamination may occur.
Is the DPR-0420-NPN-NC resistant to vibration?
+
Yes. It incorporates anti-vibration design for industrial machinery.
Is the DPR-0420-NPN-NC resistant to interference?
+
Yes. Designed with interference-resistant capability.
Can the DPR-0420-NPN-NC be used on CNC machines?
+
Yes. Suitable for CNC machine protection and detection applications.
Can it be used on press machines?
+
Yes. Suitable for industrial press and hydraulic machine applications.
Can it be used on packaging machines?
+
Yes. Suitable for automated packaging machinery requiring multi-beam detection.
Can it be used on conveyor systems?
+
Yes. Can be integrated into conveyor automation systems.
Can it be used around industrial robots?
+
Yes. For robot peripheral protection and workcell detection.
Where can the DPR-0420-NPN-NC be used?
+
Industrial detection and machine protection: CNC, press, conveyors, packaging, production lines.
What certifications are available?
+
CE, FCC, RoHS.
How do I choose the right DPR Series area sensor?
+
Select based on beam quantity, optical axis pitch, protection height, output type, and sensing distance. DPR-0420-NPN-NC offers 4 beams, 20 mm pitch, 60 mm protection height, NPN NC output.
Discover More
Explore the DAPPRA Area Sensor Series
View all Area Sensor series and find the right solution for your application.
View All SeriesNeed Help?
Need Technical Support or a Quote?
Contact DAPPRA Automation for engineering assistance, pricing, or OEM/ODM inquiries.
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Related Technical Articles
DPR-0420-NPN-NC Industrial Area Sensor
SKU: SD69
DAPPRA Automation
When an object enters the detection area and interrupts the infrared beams, the receiver detects the interruption and changes the sensor output according to the configured signal logic. The DPR-0420-NPN-NC is designed for machine protection and industrial automation applications, including CNC machines, packaging machinery, conveyor systems and robot peripheral protection. The product can also be described as a light curtain-type machine protection sensor, using multiple infrared beams rather than a single-point photoelectric detection method.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | DAPPRA |
| Manufacturer | DAPPRA Automation |
| Product Series | DPR Series |
| Model | DPR-0420-NPN-NC |
| SKU | SD69 |
| Product Category | Industrial Area Sensor |
| Related Product Type | Safety Light Curtain / Light Curtain |
| Detection Method | Through Beam Infrared Detection |
| Beam Quantity | 4 Beams |
| Optical Axis Pitch | 20 mm |
| Protection Height | 60 mm |
| Total Height (Housing) | 126 mm |
| Output Type | NPN Output |
| Signal Logic | NC (Normally Closed) |
| Response Time | <5 ms |
| Power Supply | DC24V ±20% |
| Protection Rating | IP65 |
| Detection Distance | 0.2–3 m |
| Ambient Light Resistance | 10000 Lux |
| Operating Temperature | -10°C to 55°C |
| Cross Section | 29 × 30 mm |
Key Features
Through-Beam Infrared Detection
4-Beam Detection System with 20 mm Optical Axis Pitch, The DPR-0420-NPN-NC uses an emitter and receiver structure to create a through-beam infrared detection field. With 4 optical beams and 20 mm optical axis pitch, the sensor provides a 60 mm protection height for industrial object detection and machine monitoring. The total housing height is 126 mm.
Technical Attributes
- Detection Method: Through Beam Infrared Detection
- Beam Quantity: 4 Beams
- Optical Axis Pitch: 20 mm
- Protection Height: 60 mm
- Total Height (Housing): 126 mm
Fast Response Time <5 ms
The DPR-0420-NPN-NC provides a response time of less than 5 ms, enabling rapid detection when an object interrupts the infrared beam. This feature supports automated equipment requiring fast signal processing and machine control response.
IP65 Industrial Protection
The DPR Series is designed for industrial environments with IP65 protection rating.
It provides resistance against:
- Dust exposure
- Water exposure
- Oil contamination
- High-humidity operating conditions
High-Humidity Industrial Environment
The DPR Series is suitable for industrial automation equipment operating in environments where humidity and contamination may occur.
Typical applications include:
- CNC machines
- Packaging machinery
- Conveyor systems
- Automated production equipment
Anti-Vibration and Anti-Interference Design
The DPR-0420-NPN-NC is designed for industrial environments affected by mechanical vibration and electrical interference. The design helps maintain stable operation in automation systems.
NPN NC Output Configuration
Output Type: NPN
Signal Logic: NC (Normally Closed)
Operating logic:
Normal beam condition: Signal output 0V
Beam interrupted: No output
Refer to the wiring diagram for connection details.
How Does the DPR-0420-NPN-NC Industrial Area Sensor Work?
Working Principle of DPR-0420-NPN-NC
The DPR-0420-NPN-NC Industrial Area Sensor uses a through-beam infrared detection method with an emitter and receiver. The emitter continuously sends multiple infrared beams toward the receiver to create a detection area. When an object enters the detection zone and blocks one or more beams, the receiver detects the interruption and changes the output signal according to the configured NPN NC logic.
Detection Process
- Infrared Beam Transmission — The emitter generates multiple infrared beams and sends them toward the receiver.
- Detection Area Creation — The multiple beams create a detection field. For DPR-0420-NPN-NC: Beam Quantity: 4, Optical Axis Pitch: 20 mm, Protection Height: 60 mm.
- Object Detection — When an object enters the detection area, one or more infrared beams are interrupted.
- Signal Output — The receiver processes the interruption and changes the output signal. DPR-0420-NPN-NC: Output Type: NPN, Signal Logic: NC.
Model Number Explanation
How to Read the DPR-0420-NPN-NC Model Number?
The model number of the DAPPRA DPR Series identifies the main technical configuration, including beam quantity, optical axis pitch, output type and signal logic.
Model Structure Table
| Model Code | Meaning | Description |
|---|---|---|
| DPR | Product Series | DAPPRA DPR Industrial Area Sensor Series |
| 04 | Beam Quantity | 4 optical beams |
| 20 | Optical Axis Pitch | 20 mm beam spacing |
| NPN | Output Type | NPN transistor output |
| NC | Signal Logic | Normally Closed |
Example: DPR-0420-NPN-NC means:
| Item | Value |
|---|---|
| Series | DPR Series |
| Beam Quantity | 4 Beams |
| Optical Axis Pitch | 20 mm |
| Output | NPN |
| Signal Logic | NC |
| Product Type | Industrial Area Sensor |
How to Select a DPR Series Industrial Area Sensor?
Select According to Application Requirements
The DAPPRA DPR Series provides different beam quantities and optical axis pitch configurations for various industrial detection requirements.
When selecting a suitable Area Sensor, consider the following parameters:
| Selection Factor | Explanation |
|---|---|
| Protection Height | Determines the vertical detection area required for the machine |
| Optical Axis Pitch | Determines beam spacing and detection resolution |
| Detection Distance | Select according to emitter and receiver installation distance |
| Output Type | Choose NPN or PNP according to controller input |
| Signal Logic | Select NO or NC according to control requirements |
| Installation Environment | Consider humidity, dust, vibration and interference conditions |
Understanding Protection Height
The protection height of an Area Sensor is determined by the number of optical beams and the optical axis pitch.
Protection Height = (Beam Quantity - 1) × Optical Axis Pitch
Example: DPR-0420-NPN-NC
Beam Quantity: 4 beams
Optical Axis Pitch: 20 mm
Calculation: (4 - 1) × 20 mm = 60 mm
Optical Axis Pitch: 20 mm
Calculation: (4 - 1) × 20 mm = 60 mm
DPR Series 20 mm Optical Axis Pitch Configuration
The DAPPRA DPR Series Industrial Area Sensor includes different configurations based on beam quantity, optical axis pitch, and protection height.
The complete DPR Series model selection chart is provided below as a technical reference. This table focuses on 20 mm pitch models, with the DPR-0420-NPN-NC highlighted.
| Model | Beam Quantity | Optical Axis Pitch | Protection Height | Output Type | Signal Logic |
|---|---|---|---|---|---|
| DPR-0420-NPN-NC | 4 | 20 mm | 60 mm | NPN | NC |
| DPR-0620-NPN-NC | 6 | 20 mm | 100 mm | NPN | NC |
| DPR-0820-NPN-NC | 8 | 20 mm | 140 mm | NPN | NC |
| DPR-1020-NPN-NC | 10 | 20 mm | 180 mm | NPN | NC |
Complete DPR Series Selection Chart (reference)
The complete selection table includes:
- 10 mm optical axis pitch models
- 20 mm optical axis pitch models
- 40 mm optical axis pitch models
- Different beam quantity options
- Corresponding protection height values
- DPR Series model numbers
NPN NC Output and Wiring
DPR-0420-NPN-NC Wiring
The DPR-0420-NPN-NC uses NPN NC output.
Signal Logic
| Condition | Signal |
|---|---|
| Normal beam transmission | 0V output |
| Beam interrupted | No output |
DPR-0420-NPN-NC SD69 WIRING DIAGRAM
Mechanical Dimensions
DPR-0420-NPN-NC Dimensions
- 60 mm protection height
- 20 mm optical axis pitch
- 29 × 30 mm cross section
- Total height (housing): 126 mm
DPR-0420-NPN-NC SD69 MECHANICAL DIMENSION DRAWING
Installation Methods
The DPR-0420-NPN-NC Industrial Area Sensor supports flexible installation methods according to different machine structures and protection requirements.
The sensor can be installed using:
- Standard Vertical Installation
- Side Installation
- Adjustable Bracket Installation
DPR-0420-NPN-NC Installation Methods
Standard Vertical Installation
The standard vertical installation method places the emitter and receiver vertically opposite each other to create a detection area.
Suitable for:
- CNC machines
- Press machines
- Machine entrances
- Safety protection areas
Side Installation
Side installation allows the sensor to be mounted according to machine structure limitations where standard mounting space is restricted.
Suitable for:
- Compact equipment
- Limited installation space
- Customized machine layouts
Adjustable Bracket Installation
The adjustable bracket installation method allows flexible positioning and alignment of the emitter and receiver.
Advantages:
- Easier alignment
- Flexible mounting angle adjustment
- Suitable for customized automation equipment
Industrial Applications
DPR-0420-NPN-NC Application Areas
The DAPPRA DPR-0420-NPN-NC Industrial Area Sensor is designed for industrial automation equipment requiring reliable object detection and machine protection.
With multi-beam infrared detection, fast response time and industrial protection features, the DPR Series can be applied in various automated production environments.
Typical applications include:
- CNC machines
- Press and hydraulic machines
- Packaging machinery
- Conveyor systems
- Robot workcells
DPR-0420-NPN-NC Industrial Application Overview
CNC Machine Protection
The DPR-0420-NPN-NC can be installed around CNC machining equipment to create a detection area for machine monitoring and protection applications.
Typical equipment:
- CNC machining centers
- Milling machines
- Turning machines
Press Machine Protection
The multi-beam infrared detection area of DPR Series sensors can be used around industrial press and hydraulic equipment.
Typical applications:
- Hydraulic presses
- Punching machines
- Metal forming equipment
Packaging Machinery
DPR Series sensors support object detection applications in automated packaging equipment.
Typical applications:
- Packaging lines
- Filling machines
- Automatic assembly systems
Conveyor System Detection
The DPR-0420-NPN-NC can be integrated into conveyor automation systems for object detection and machine control applications.
Typical applications:
- Material handling systems
- Production conveyors
- Automated logistics equipment
Robot Workcell Protection
The DPR-0420-NPN-NC can be installed around industrial robot workcells to create a multi-beam infrared detection area.
Typical applications:
- Robotic assembly cells
- Automated manufacturing lines
- Robot peripheral areas
Industrial Environment & Safety Performance
Designed for Demanding Industrial Automation Environments
The DAPPRA DPR-0420-NPN-NC Industrial Area Sensor is designed for demanding industrial automation environments where equipment may be exposed to humidity, water, oil contamination, mechanical vibration and electromagnetic interference.
The DPR Series provides reliable detection performance for industrial machine applications with:
- High humidity resistance
- Water and oil protection
- Anti-vibration design
- Anti-interference capability
- IP65 protection rating
The DPR-0420-NPN-NC is suitable for industrial equipment requiring stable operation in challenging manufacturing environments.
Industrial Environment Specification
| Parameter | Specification |
|---|---|
| Protection Rating | IP65 |
| Operating Temperature | -10°C to 55°C |
| Ambient Light Resistance | 10000 Lux |
| Environmental Features | Humidity Resistance / Oil Protection / Anti-Vibration / Anti-Interference |
Safety Light Curtain for Machine Protection
The DAPPRA DPR-0420-NPN-NC belongs to the Industrial Area Sensor / Safety Light Curtain category for machine protection applications.
Unlike single-point photoelectric sensors, the DPR-0420-NPN-NC uses multiple infrared beams between the emitter and receiver to create a detection zone.
The sensor provides:
- Multi-beam infrared detection
- Fast response time <5 ms
- NPN NC output configuration
- Machine protection applications
Product Compliance Documentation
DAPPRA DPR-0420-NPN-NC is supported by the following compliance documentation:
- CE Certification
- FCC Certification
- RoHS Compliance
Area Sensor vs Single-Point Photoelectric Sensor
| Feature | Area Sensor | Single-Point Photoelectric Sensor |
|---|---|---|
| Detection method | Multiple infrared beams | Single optical detection point |
| Detection area | Multi-beam area | Single point |
| Beam quantity | Multiple | Typically one detection beam |
| Typical use | Area detection and machine protection | Object presence / position detection |
| DPR Series | Yes | No |
Area Sensor vs Safety Light Curtain
The terms Area Sensor and Safety Light Curtain can overlap in industrial applications, but they should not automatically be treated as identical technical classifications.
An Area Sensor generally describes a multi-beam photoelectric detection device.
A safety-rated light curtain is normally associated with specific functional-safety requirements and applicable safety standards.
For the DPR-0420-NPN-NC page, DAPPRA should therefore clearly describe the product as:
Industrial Area Sensor / Safety Light Curtain for Machine Protection
Market Terminology Note: Safety Light Curtain vs Area Sensor in Indonesia
In the Indonesian industrial automation market, products like the DAPPRA DPR-0420-NPN-NC are commonly referred to as either a "Safety Light Curtain" or an "Area Sensor", depending on the specific application and user terminology.
While these two terms are often used interchangeably to describe similar light-beam sensing products, they should not automatically be considered identical from a technical and safety standards perspective. The appropriate choice of terminology—and the product itself—depends on several key factors:
- Required Safety Function: Does your application require personnel or equipment protection that meets a specific safety level, or is it for general object presence detection?
- Detection Resolution: What is the smallest object size that needs to be detected? This directly relates to the optical axis pitch (e.g., 20 mm for this product).
- Application Scenario: Is it for machine entrance safeguarding, or for object counting and positioning on a conveyor belt?
- Output Configuration: Does your control system require an NPN or PNP output?
- Applicable Safety Standards: Does the product possess the necessary safety certifications to support your safety claim?
For the DPR-0420-NPN-NC, it combines the multi-beam detection flexibility of an "Area Sensor" with the machine protection capabilities of a "Safety Light Curtain." Therefore, in the Indonesian market, it can be effectively positioned and applied as either a high-performance area sensor for automation control or as a reliable safety light curtain component for integration into machine protection systems.
Choosing the correct terminology helps ensure clear communication with suppliers, integrators, and end-users, ensuring the product is correctly applied to its intended scenario. For more details on specific applications, please refer to the Industrial Applications section above.
Parameter Dictionary
Optical Axis Pitch
The distance between adjacent optical detection beams.
DPR-0420-NPN-NC: 20 mm
Beam Quantity
The number of optical beams used to form the detection field.
DPR-0420-NPN-NC: 4 beams
Protection Height
The vertical detection height created by the optical beam arrangement.
DPR-0420-NPN-NC: 60 mm
Total Height (Housing)
The overall height of the sensor housing including end caps.
DPR-0420-NPN-NC: 126 mm
Detection Distance
The distance between the emitter and receiver within which the sensor operates.
DPR-0420-NPN-NC: 0.2–3 m
Response Time
The time required for the sensor to respond to a detected beam interruption.
DPR-0420-NPN-NC: <5 ms
NPN Output
A transistor output configuration used for connection to industrial control systems such as PLC inputs.
NC Signal Logic
Normally Closed signal logic. For the specified DPR-0420-NPN-NC configuration, normal beam transmission produces the specified 0V signal condition, while beam interruption removes the output.
DAPPRA Automation — Industrial Sensor Manufacturer
DAPPRA Automation is an industrial automation manufacturer and platform providing industrial control components, sensors, drives and supporting components for automation applications.
The DPR Series Industrial Area Sensor is manufactured by DAPPRA's own production facility, supporting consistent product quality control and customized production requirements.
OEM & ODM Services
DAPPRA provides OEM and ODM manufacturing services based on customer designs, specifications or samples.
OEM & ODM support includes:
- Product customization
- Manufacturing based on customer requirements
- Customized industrial automation solutions
Global Service Markets
DAPPRA provides industrial automation products and OEM/ODM services for customers in:
- Indonesia
- Vietnam
- Russia
Factory Production Capability
Technical Resources
Download technical documents for the DAPPRA DPR-0420-NPN-NC Industrial Area Sensor, including datasheet, CAD drawing and installation guide.
DPR-0420-NPN-NC Datasheet
Technical specification document including product parameters, working principle, wiring information, dimensions, certifications and application details.
DPR-0420-NPN-NC Installation Guide
Installation reference showing mounting methods, vertical installation, side installation and adjustable bracket installation.
DPR-0420-NPN-NC CAD Drawing
Mechanical drawing resource for engineers, including product dimensions and installation reference for machine integration.
Engineering FAQ
The following FAQ provides technical information about the DAPPRA DPR-0420-NPN-NC Industrial Area Sensor, including product specifications, output configuration, applications, environmental performance and certification information.
What is the DAPPRA DPR-0420-NPN-NC?
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The DAPPRA DPR-0420-NPN-NC is a DPR Series Industrial Area Sensor designed for machine protection and industrial automation applications.
Features: 4 beams, 20 mm pitch, 60 mm protection height, 126 mm total housing height, NPN NC output.
What is the SKU of the DPR-0420-NPN-NC?
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The SKU of the DPR-0420-NPN-NC is: SD69
What does DPR-0420-NPN-NC mean?
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DPR = DAPPRA DPR Series, 04 = 4 Optical Beams, 20 = 20 mm Optical Axis Pitch, NPN = NPN Output, NC = Normally Closed Signal Logic.
What is the detection distance of the DPR-0420-NPN-NC?
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The DPR-0420-NPN-NC has a detection distance of 0.2–3 m.
How many beams does the DPR-0420-NPN-NC have?
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The DPR-0420-NPN-NC uses: 4 infrared optical beams.
What is the optical axis pitch?
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The optical axis pitch is: 20 mm.
What is the protection height?
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The DPR-0420-NPN-NC provides: 60 mm protection height. Calculation: (4 - 1) × 20 mm = 60 mm.
What is the total height of the DPR-0420-NPN-NC housing?
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The total height of the sensor housing is 126 mm.
What is the detection method?
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The DPR-0420-NPN-NC uses: through-beam infrared detection.
What is the response time?
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The response time is: <5 ms.
What is the IP rating of the DPR-0420-NPN-NC?
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The DPR-0420-NPN-NC has an IP65 protection rating.
What is the operating temperature?
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The operating temperature range is -10°C to +55°C.
What output does the DPR-0420-NPN-NC use?
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The DPR-0420-NPN-NC uses: NPN NC output configuration.
What does NC mean?
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NC means Normally Closed. Normal beam condition = 0V output, beam interruption = no output.
What is the power supply?
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The power supply is: DC24V ±20%.
How should the DPR-0420-NPN-NC be wired?
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Refer to the official DAPPRA wiring diagram. Includes DC24V power, M12 connector, NPN NC output.
Can the DPR-0420-NPN-NC be connected to a PLC?
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Yes. The NPN NC output can be connected to compatible PLC input circuits.
Can the DPR-0420-NPN-NC be used in humid environments?
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Yes. Designed for high humidity, water, oil protection with IP65 rating.
Is the DPR-0420-NPN-NC resistant to oil?
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Yes. The DPR Series is designed for environments where oil contamination may occur.
Is the DPR-0420-NPN-NC resistant to vibration?
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Yes. It incorporates anti-vibration design for industrial machinery.
Is the DPR-0420-NPN-NC resistant to interference?
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Yes. Designed with interference-resistant capability.
Can the DPR-0420-NPN-NC be used on CNC machines?
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Yes. Suitable for CNC machine protection and detection applications.
Can it be used on press machines?
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Yes. Suitable for industrial press and hydraulic machine applications.
Can it be used on packaging machines?
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Yes. Suitable for automated packaging machinery requiring multi-beam detection.
Can it be used on conveyor systems?
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Yes. Can be integrated into conveyor automation systems.
Can it be used around industrial robots?
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Yes. For robot peripheral protection and workcell detection.
Where can the DPR-0420-NPN-NC be used?
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Industrial detection and machine protection: CNC, press, conveyors, packaging, production lines.
What certifications are available?
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CE, FCC, RoHS.
How do I choose the right DPR Series area sensor?
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Select based on beam quantity, optical axis pitch, protection height, output type, and sensing distance. DPR-0420-NPN-NC offers 4 beams, 20 mm pitch, 60 mm protection height, NPN NC output.
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