DAPPRA DPR-0840-NPN-NC Safety Light Curtain 8 Beam 40mm Pitch Area Sensor
Rp1,130,000.00
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DAPPRA DPR-0840-NPN-NC is an 8-beam industrial safety light curtain area sensor with 40 mm optical axis pitch and 280 mm protection height. Through-beam infrared detection, NPN NC output, 0.1–3 m detection distance, ideal for machine protection, access monitoring, and industrial automation applications.
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DAPPRA DPR-0840-NPN-NC Safety Light Curtain Area Sensor
8‑Beam Parallel Safety Light Curtain with 280 mm Protection Height
The DAPPRA DPR-0840-NPN-NC is an industrial safety light curtain area sensor from the DPR Series, designed for industrial automation equipment requiring reliable multi‑beam object detection and machine protection.
The DPR-0840-NPN-NC uses through‑beam infrared detection technology with a separate emitter and receiver. With 8 optical beams, a 40 mm optical axis pitch, and a 280 mm protection height, it provides stable detection performance for industrial applications.
The model features:
- 8 parallel infrared beams
- 10 mm resolution
- 5–10 mm minimum detectable object capability
- NPN NC output configuration
- DC24V power supply
- Maximum detection distance up to 3 m
- IP65 protection rating
- Oil‑resistant fluorosilicone surface coating
- Wire synchronization technology
- Dual‑circuit signal output with self‑test technology
DPR-0840-NPN-NC Product Identity
| Parameter | Specification |
|---|---|
| Brand | DAPPRA |
| Manufacturer | DAPPRA Automation |
| Product Series | DPR Series |
| Model | DPR-0840-NPN-NC |
| SKU | SH60 |
| Product Category | Safety Light Curtain / Industrial Area Sensor |
| Detection Method | Through Beam Infrared Detection |
| Beam Configuration | Parallel Beam |
| Optical Axis Quantity | 8 Beams |
| Optical Axis Pitch | 40 mm |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
What Is an Industrial Safety Light Curtain Area Sensor?
A Safety Light Curtain Area Sensor is a multi‑beam photoelectric sensor that uses multiple light beams to create a detection area instead of relying on a single detection point. It is commonly used for machine safeguarding, object detection, and automation applications.
Compared with a conventional single‑point photoelectric sensor, a safety light curtain area sensor can detect objects passing through a defined detection zone, making it suitable for applications where object position, shape or movement direction may vary.
A typical industrial safety light curtain area sensor consists of:
- Emitter: Generates infrared beams.
- Receiver: Detects received infrared signals.
- Optical Beam Array: Creates a multi‑beam detection field.
- Controller Interface: Provides output signals to industrial control systems.
The DAPPRA DPR Series uses a through‑beam infrared detection structure with separate emitter and receiver units to provide stable object detection performance in industrial environments.
How Does the DPR-0840-NPN-NC Safety Light Curtain Area Sensor Work?
The DPR-0840-NPN-NC operates using a through‑beam infrared detection method.
The emitter sends multiple parallel infrared beams toward the receiver. When an object enters the detection area and interrupts one or more beams, the receiver detects the change and provides the corresponding output signal.
Detection Process
- The emitter generates infrared beams.
- Parallel beams travel across the detection area.
- The receiver monitors the beam status.
- Object interruption changes the output condition.
- The controller receives the NPN NC signal output.
The DPR-0840-NPN-NC uses parallel beam technology, which provides a defined detection area for industrial object detection applications.
How to Select the Right Safety Light Curtain Area Sensor?
Selecting the correct safety light curtain area sensor requires matching the sensor specifications with the actual detection requirements of the application.
The main selection factors include:
- Object size requirement
- Resolution and minimum detectable object (MDO)
- Optical axis pitch
- Protection height
- Number of optical beams
- Detection distance
- Output type and signal logic
- Installation method
- Industrial environment conditions
Step 1 — Determine Object Detection Requirement
The first step is identifying the object size and detection accuracy requirement.
For smaller objects, a sensor with higher resolution is required. For larger objects or general presence detection, a wider optical axis pitch may be suitable.
Step 2 — Select Resolution and Minimum Detectable Object
Resolution describes the minimum sensing capability determined by the sensor optical structure.
The DPR-0840-NPN-NC provides:
- Resolution: 10 mm
- Minimum Detectable Object (MDO): 5–10 mm
Step 3 — Select Optical Axis Pitch
Optical axis pitch refers to the distance between adjacent optical beams.
DAPPRA DPR Series Safety Light Curtain Area Sensors are available with different optical axis pitch options:
- 10 mm optical axis pitch
- 20 mm optical axis pitch
- 40 mm optical axis pitch
DPR-0840-NPN-NC Safety Light Curtain Area Sensor Selection Example
The following example demonstrates how the DPR-0840-NPN-NC can be selected based on industrial detection requirements.
Application Requirements
| Selection Requirement | Required Specification |
|---|---|
| Detection Type | Multi‑beam object detection |
| Optical Axis Pitch | 40 mm |
| Required Protection Height | 280 mm |
| Output Requirement | NPN NC |
| Power Supply | DC24V |
Selection Result
Based on the above requirements, the suitable model is:
DAPPRA DPR-0840-NPN-NC (SKU: SH60)
| Selection Logic | Result |
|---|---|
| Optical Axis Quantity | 8 beams |
| Optical Axis Pitch | 40 mm |
| Protection Height Calculation | (8 - 1) × 40 mm = 280 mm |
| Output Configuration | NPN NC |
This selection method allows engineers to match application requirements with the appropriate DPR Series Safety Light Curtain Area Sensor model.
Why Choose the DAPPRA DPR-0840-NPN-NC Safety Light Curtain Area Sensor?
The DPR-0840-NPN-NC is designed for industrial automation applications requiring stable multi‑beam detection, reliable signal output and durable operation in demanding industrial environments.
1. 10 mm Resolution Detection Capability
The DPR-0840-NPN-NC provides a 10 mm resolution with a specified 5–10 mm minimum detectable object (MDO) range.
This makes it suitable for applications requiring detection of relatively small objects, parts presence confirmation and automated equipment monitoring.
2. 8 Parallel Infrared Beams
The sensor uses 8 parallel infrared beams to create a defined detection zone.
The multi‑beam structure allows detection across the protected height instead of relying on a single sensing point.
3. 280 mm Protection Height
With a 40 mm optical axis pitch and 8 optical beams, the DPR-0840-NPN-NC provides:
- Optical Axis Quantity: 8 beams
- Optical Axis Pitch: 40 mm
- Protection Height: 280 mm
4. Fast Response Performance
The DPR-0840-NPN-NC provides a response time of:
0.5 ms
Fast response capability supports applications requiring quick detection response in industrial automation systems.
5. Industrial Protection Design
The DPR-0840-NPN-NC is designed for industrial environments with:
- IP65 protection rating
- Oil‑resistant fluorosilicone surface coating
- Anti‑vibration design
- Electromagnetic interference resistance
DPR-0840-NPN-NC Key Features
| Feature | Description |
|---|---|
| Through Beam Infrared Detection | Separate emitter and receiver structure using infrared beam detection. |
| Parallel Beam Configuration | Multiple parallel infrared beams create a defined detection area. |
| 10 mm Resolution | Supports detection requirements with 10 mm resolution specification. |
| NPN NC Output | Normally Closed NPN signal configuration for industrial control systems. |
| DC24V Operation | Designed for common industrial control voltage systems. |
| Wire Synchronization | Uses wire synchronization technology between emitter and receiver. |
| Dual‑Circuit Signal Output | Provides self‑test technology through dual‑circuit signal output design. |
| IP65 Protection | Suitable for industrial environments requiring protection against dust and water exposure. |
| Oil Resistant Surface | Uses fluorosilicone surface coating for oil resistance. |
DPR-0840-NPN-NC Technical Specifications
| Specification | Value |
|---|---|
| Model | DPR-0840-NPN-NC |
| SKU | SH60 |
| Series | DPR Series |
| Detection Method | Through Beam Infrared Detection |
| Beam Configuration | Parallel Beam |
| Optical Axis Quantity | 8 beams |
| Optical Axis Pitch | 40 mm |
| Resolution | 10 mm |
| Minimum Detectable Object (MDO) | 5–10 mm |
| Protection Height | 280 mm |
| Total Height | 366 mm |
| Maximum Detection Distance | 3 m |
| Power Supply | DC24V ±20% |
| Response Time | 0.5 ms |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
| Connector | M12 Cable |
| Output Current | ≤200 mA |
| Power Consumption | <5 W |
| Cross Section Size | 29 × 30 mm |
| Protection Rating | IP65 |
| Housing Material | Aluminum Alloy |
| Synchronization Method | Wire Synchronization |
| Operating Temperature | -10°C to 55°C |
| Operating Humidity | Relative Humidity <85% at 20°C |
| Ambient Light Resistance | 10000 Lux (incident angle >5°) |
Understanding DPR-0840-NPN-NC Model Number
The DPR-0840-NPN-NC model code identifies the key configuration parameters of the DAPPRA DPR Series Safety Light Curtain Area Sensor.
| Code | Meaning |
|---|---|
| DPR | DAPPRA DPR Series |
| 08 | 8 Optical Beams |
| 40 | 40 mm Optical Axis Pitch |
| NPN | NPN Output Type |
| NC | Normally Closed Signal Logic |
The complete model identification:
DPR-0840-NPN-NC (SKU: SH60)
represents a DPR Series Safety Light Curtain Area Sensor with 8 beams, 40 mm optical axis pitch, NPN output and Normally Closed signal logic.
DAPPRA DPR Series Safety Light Curtain Area Sensor Model Selection Table
The DAPPRA DPR Series includes multiple Industrial Safety Light Curtain Area Sensor configurations with different beam quantities, optical axis pitch, output types and signal logic options.
The following table helps engineers select the suitable DPR Series model according to application requirements.
| Model | SKU | Beam Quantity | Optical Axis Pitch | Protection Height | Resolution | Output Type | Signal Logic |
|---|---|---|---|---|---|---|---|
| DPR-0840-PNP-NC | SH60 | 8 Beams | 40 mm | 280 mm | 10 mm | PNP | NC |
| DPR-0840-NPN-NC | SH60 | 8 Beams | 40 mm | 280 mm | 10 mm | NPN | NC |
| DPR-1240-NPN-NC | SH62 | 12 Beams | 40 mm | 440 mm | 10 mm | NPN | NC |
| DPR-1640-NPN-NC | SH64 | 16 Beams | 40 mm | 600 mm | 10 mm | NPN | NC |
DPR-0840-NPN-NC NPN NC Signal Logic
The DPR-0840-NPN-NC uses an NPN output with NC (Normally Closed) signal logic.
The signal output behavior changes according to the infrared beam detection status.
| Detection Condition | Output Status |
|---|---|
| Normal beam condition: | Output follows NC signal logic. |
| Beam interruption: | Output changes according to NC switching state. |
The NPN NC configuration allows the sensor to interface with industrial control systems requiring Normally Closed signal logic.
NPN NC Output Configuration
- Output Type: NPN
- Signal Logic: NC (Normally Closed)
- Power Supply: DC24V
- Connector: M12 Cable
DPR-0840-NPN-NC Wiring Diagram
The DPR-0840-NPN-NC should be wired according to the DAPPRA DPR Series wiring configuration.
The wiring system includes:
- Emitter connection
- Receiver connection
- DC24V power supply
- 0V connection
- NPN NC output signal
DPR-0840-NPN-NC Installation Methods
The DPR-0840-NPN-NC can be installed according to different machine structures and protection requirements.
The DPR Series supports three installation configurations:
| Installation Method | Description |
|---|---|
| L1 Top & Bottom Installation | Standard installation method using top and bottom mounting brackets. |
| L2 Side Installation | Side‑mounted installation option for different machine structures. |
| Cantilever Installation | Multi‑directional adjustable bracket installation option. |
Mounting Accessories
The standard and optional mounting accessories include different bracket configurations for flexible industrial installation.
- Top and bottom mounting brackets
- Side mounting brackets
- Cantilever mounting brackets
- Mounting screws and hardware
DPR-0840-NPN-NC Dimension Information
The DPR-0840-NPN-NC is designed with a compact industrial housing structure suitable for integration into automation equipment.
| Dimension Parameter | Value |
|---|---|
| Protection Height | 280 mm |
| Total Height | 366 mm |
| Cross Section | 29 × 30 mm |
| A1 | 9 mm |
| A2 | 12 mm |
| B1 | 20 mm |
| B2 | 47 mm |
| A3 | 33 mm |
DPR-0840-NPN-NC Industrial Applications
The DPR-0840-NPN-NC Safety Light Curtain Area Sensor is designed for industrial automation applications requiring multi‑beam object detection and machine protection.
Typical application areas include:
- Press Machinery
- Injection Molding Machinery
- Press Brake Machinery
- Automated Assembly and Wiring Equipment
- Shearing Machinery
- Cutting Machinery
- Pressing Machinery
- Automated Storage Equipment
- Woodworking Machinery
- Stamping Machinery
- Lifting Control Machinery
- Welding Production Lines
- Vertical Parking Systems
- Hazardous Machine Applications
- Falling Object Detection Applications
The sensor can establish a defined infrared detection area around industrial equipment where object detection or machine protection is required.
Industrial Environment Performance
Designed for Demanding Automation Environments
The DPR-0840-NPN-NC is designed for industrial automation environments where equipment may experience humidity, water exposure, oil contamination, mechanical vibration and electromagnetic interference.
Environmental Protection Features
| Feature | Description |
|---|---|
| IP65 Protection | Protection design for industrial environments requiring resistance to dust and water exposure. |
| Oil Resistance | Surface protection using fluorosilicone coating for oil‑resistant performance. |
| Anti‑Vibration Design | Designed for stable operation in industrial machinery environments. |
| Anti‑Interference Design | Uses wire synchronization technology to improve resistance against electromagnetic interference. |
| Ambient Light Resistance | 10000 Lux (incident angle >5°) |
| Operating Temperature | -10°C to 55°C |
| Operating Humidity | Relative humidity <85% at 20°C |
DPR-0840-NPN-NC Safety Certification and Compliance
The DPR-0840-NPN-NC is supported by functional safety and product compliance documentation.
SIL 2 Functional Safety Certification
The DPR-0840-NPN-NC is supported by SIL 2 Functional Safety documentation according to IEC 61508 requirements.
| Safety Parameter | Specification |
|---|---|
| Safety Level | SIL 2 |
| Applicable Standard | IEC 61508 |
| Certification Type | Third‑Party Functional Safety Certification |
Product Compliance Documentation
- SIL 2 Functional Safety Certificate
- CE Certification
- FCC Certification
- RoHS Compliance
DAPPRA Automation Manufacturing and Quality Assurance
The DPR Series is produced by DAPPRA Automation's own manufacturing facility.
DAPPRA provides industrial automation products with production control and quality inspection processes.
Quality Assurance Process
- Factory Quality Control
- 100% Product Inspection
- Functional Testing
- Incoming Material Inspection
- Aging Test
- Final Inspection
DPR-0840-NPN-NC Standard Product Package
The DPR-0840-NPN-NC standard package includes the complete sensor system and required installation accessories for industrial installation.
| Package Item | Quantity / Description |
|---|---|
| Emitter | 1 unit |
| Receiver | 1 unit |
| Connecting Cables | 2 cables |
| Standard Mounting Accessories | Included |
The complete package allows installation of the emitter and receiver system for through‑beam infrared detection applications.
DPR-0840-NPN-NC Technical Resources
DAPPRA provides technical documents to support product selection, installation and engineering integration.
DPR-0840-NPN-NC Datasheet
Complete technical specifications, electrical parameters, dimensions and product information.
DPR-0840-NPN-NC Installation Guide
Installation reference information including mounting and configuration guidance.
DPR-0840-NPN-NC CAD Drawing
Engineering drawing information for mechanical integration and installation design.
DPR-0840-NPN-NC Engineering FAQ
The DAPPRA DPR-0840-NPN-NC (SKU: SH60) is a DPR Series Safety Light Curtain Area Sensor using through‑beam infrared detection technology with 8 parallel infrared beams, 40 mm optical axis pitch, 10 mm resolution, 280 mm protection height and NPN NC output configuration.
An Industrial Safety Light Curtain Area Sensor is a multi‑beam photoelectric sensor that uses multiple light beams to create a detection area instead of relying on a single detection point. It is commonly used for machine safeguarding, object detection, and automation applications.
The DPR-0840-NPN-NC uses through‑beam infrared detection with a separate emitter and receiver. The emitter sends parallel infrared beams to the receiver. When an object interrupts one or more beams, the receiver detects the change and provides the output signal.
The main factors for selecting a Safety Light Curtain Area Sensor include object size requirement, resolution, minimum detectable object (MDO), optical axis pitch, protection height, beam quantity, detection distance, output type, installation method and industrial environment conditions.
Optical axis pitch is the distance between adjacent optical beams in a Safety Light Curtain Area Sensor. The DPR Series includes different optical axis pitch configurations including 10 mm, 20 mm and 40 mm options.
The DPR-0840-NPN-NC has a specified resolution of 10 mm.
The specified Minimum Detectable Object (MDO) range of the DPR-0840-NPN-NC is 5–10 mm.
For DPR Series Safety Light Curtain Area Sensors, protection height is calculated as (Beam Quantity − 1) × Optical Axis Pitch. For DPR-0840-NPN-NC, (8 − 1) × 40 mm equals 280 mm protection height.
The DPR-0840-NPN-NC has 8 optical beams.
The optical axis pitch of DPR-0840-NPN-NC is 40 mm.
The DPR-0840-NPN-NC provides a 280 mm protection height.
The maximum detection distance of DPR-0840-NPN-NC is 3 m.
The DPR-0840-NPN-NC operates with a DC24V ±20% power supply.
The DPR-0840-NPN-NC uses an NPN output configuration with NC (Normally Closed) signal logic.
NC means Normally Closed signal logic. For the DPR-0840-NPN-NC, the normal beam condition provides 0V output, while beam interruption results in no output.
The DPR-0840-NPN-NC response time is 0.5 ms.
The DPR-0840-NPN-NC uses an M12 cable connection.
Yes. The DPR-0840-NPN-NC is designed for industrial automation environments with IP65 protection, oil‑resistant fluorosilicone coating, anti‑vibration design and electromagnetic interference resistance.
The DPR-0840-NPN-NC uses wire synchronization technology.
The DPR-0840-NPN-NC uses a dual‑circuit signal output design as a self‑test technology to improve operational safety.
The DPR-0840-NPN-NC supports three installation methods: L1 top and bottom installation, L2 side installation and cantilever installation.
Typical applications include press machinery, injection molding machinery, stamping equipment, welding production lines, automated storage equipment, woodworking machinery and other industrial automation applications requiring multi‑beam detection.
Yes. The DPR-0840-NPN-NC can be used for falling object detection applications where multi‑beam infrared detection is required.
The DPR-0840-NPN-NC is supported by SIL 2 Functional Safety Certification, IEC 61508 applicable standard, CE Certification, FCC Certification and RoHS Compliance documentation.
Optical axis pitch is the distance between adjacent beams, while resolution describes the minimum detectable object capability of the sensor. A smaller pitch generally provides higher detection capability.
Yes. Because the DPR-0840-NPN-NC uses multiple parallel infrared beams, it can detect objects entering different positions within the sensing area.
DPR-0840-NPN-NC is a DAPPRA DPR Series industrial safety light curtain area sensor with similar application requirements to some 40mm pitch 8‑beam area sensors. Product compatibility should be verified according to electrical specifications and application requirements.
Technical documents are available in the Technical Resources section:
The total height of DPR-0840-NPN-NC is 366 mm, which includes the housing and mounting structure beyond the 280 mm protection height.
The DPR-0840-NPN-NC has an ambient light resistance of 10000 Lux (incident angle >5°), making it suitable for industrial environments with varying lighting conditions.
Yes, the DAPPRA DPR-0840-NPN-NC (SKU: SH60) is designed as a compatible alternative to BW40-08 and similar 8‑beam, 40 mm pitch safety light curtain area sensors. However, please verify electrical specifications, output configuration (NPN NC), mounting dimensions and application requirements to ensure proper replacement and compatibility.
DAPPRA DPR-0840-NPN-NC Safety Light Curtain Area Sensor Summary
The DAPPRA DPR-0840-NPN-NC (SKU: SH60) combines multi‑beam infrared detection, 10 mm resolution, 280 mm protection height, NPN NC output and industrial protection features in a compact Safety Light Curtain Area Sensor solution.
Designed for engineers selecting safety light curtains and area sensors for automation equipment, the DPR-0840-NPN-NC provides a complete solution supported by technical documentation, installation guidance, certification records and manufacturing quality processes.
Need Technical Support or a Quote?
Contact DAPPRA Automation for engineering assistance, pricing, or OEM/ODM inquiries.
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DAPPRA DPR-0840-NPN-NC Safety Light Curtain Area Sensor
8‑Beam Parallel Safety Light Curtain with 280 mm Protection Height
The DAPPRA DPR-0840-NPN-NC is an industrial safety light curtain area sensor from the DPR Series, designed for industrial automation equipment requiring reliable multi‑beam object detection and machine protection.
The DPR-0840-NPN-NC uses through‑beam infrared detection technology with a separate emitter and receiver. With 8 optical beams, a 40 mm optical axis pitch, and a 280 mm protection height, it provides stable detection performance for industrial applications.
The model features:
- 8 parallel infrared beams
- 10 mm resolution
- 5–10 mm minimum detectable object capability
- NPN NC output configuration
- DC24V power supply
- Maximum detection distance up to 3 m
- IP65 protection rating
- Oil‑resistant fluorosilicone surface coating
- Wire synchronization technology
- Dual‑circuit signal output with self‑test technology
DPR-0840-NPN-NC Product Identity
| Parameter | Specification |
|---|---|
| Brand | DAPPRA |
| Manufacturer | DAPPRA Automation |
| Product Series | DPR Series |
| Model | DPR-0840-NPN-NC |
| SKU | SH60 |
| Product Category | Safety Light Curtain / Industrial Area Sensor |
| Detection Method | Through Beam Infrared Detection |
| Beam Configuration | Parallel Beam |
| Optical Axis Quantity | 8 Beams |
| Optical Axis Pitch | 40 mm |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
What Is an Industrial Safety Light Curtain Area Sensor?
A Safety Light Curtain Area Sensor is a multi‑beam photoelectric sensor that uses multiple light beams to create a detection area instead of relying on a single detection point. It is commonly used for machine safeguarding, object detection, and automation applications.
Compared with a conventional single‑point photoelectric sensor, a safety light curtain area sensor can detect objects passing through a defined detection zone, making it suitable for applications where object position, shape or movement direction may vary.
A typical industrial safety light curtain area sensor consists of:
- Emitter: Generates infrared beams.
- Receiver: Detects received infrared signals.
- Optical Beam Array: Creates a multi‑beam detection field.
- Controller Interface: Provides output signals to industrial control systems.
The DAPPRA DPR Series uses a through‑beam infrared detection structure with separate emitter and receiver units to provide stable object detection performance in industrial environments.
How Does the DPR-0840-NPN-NC Safety Light Curtain Area Sensor Work?
The DPR-0840-NPN-NC operates using a through‑beam infrared detection method.
The emitter sends multiple parallel infrared beams toward the receiver. When an object enters the detection area and interrupts one or more beams, the receiver detects the change and provides the corresponding output signal.
Detection Process
- The emitter generates infrared beams.
- Parallel beams travel across the detection area.
- The receiver monitors the beam status.
- Object interruption changes the output condition.
- The controller receives the NPN NC signal output.
The DPR-0840-NPN-NC uses parallel beam technology, which provides a defined detection area for industrial object detection applications.
How to Select the Right Safety Light Curtain Area Sensor?
Selecting the correct safety light curtain area sensor requires matching the sensor specifications with the actual detection requirements of the application.
The main selection factors include:
- Object size requirement
- Resolution and minimum detectable object (MDO)
- Optical axis pitch
- Protection height
- Number of optical beams
- Detection distance
- Output type and signal logic
- Installation method
- Industrial environment conditions
Step 1 — Determine Object Detection Requirement
The first step is identifying the object size and detection accuracy requirement.
For smaller objects, a sensor with higher resolution is required. For larger objects or general presence detection, a wider optical axis pitch may be suitable.
Step 2 — Select Resolution and Minimum Detectable Object
Resolution describes the minimum sensing capability determined by the sensor optical structure.
The DPR-0840-NPN-NC provides:
- Resolution: 10 mm
- Minimum Detectable Object (MDO): 5–10 mm
Step 3 — Select Optical Axis Pitch
Optical axis pitch refers to the distance between adjacent optical beams.
DAPPRA DPR Series Safety Light Curtain Area Sensors are available with different optical axis pitch options:
- 10 mm optical axis pitch
- 20 mm optical axis pitch
- 40 mm optical axis pitch
DPR-0840-NPN-NC Safety Light Curtain Area Sensor Selection Example
The following example demonstrates how the DPR-0840-NPN-NC can be selected based on industrial detection requirements.
Application Requirements
| Selection Requirement | Required Specification |
|---|---|
| Detection Type | Multi‑beam object detection |
| Optical Axis Pitch | 40 mm |
| Required Protection Height | 280 mm |
| Output Requirement | NPN NC |
| Power Supply | DC24V |
Selection Result
Based on the above requirements, the suitable model is:
DAPPRA DPR-0840-NPN-NC (SKU: SH60)
| Selection Logic | Result |
|---|---|
| Optical Axis Quantity | 8 beams |
| Optical Axis Pitch | 40 mm |
| Protection Height Calculation | (8 - 1) × 40 mm = 280 mm |
| Output Configuration | NPN NC |
This selection method allows engineers to match application requirements with the appropriate DPR Series Safety Light Curtain Area Sensor model.
Why Choose the DAPPRA DPR-0840-NPN-NC Safety Light Curtain Area Sensor?
The DPR-0840-NPN-NC is designed for industrial automation applications requiring stable multi‑beam detection, reliable signal output and durable operation in demanding industrial environments.
1. 10 mm Resolution Detection Capability
The DPR-0840-NPN-NC provides a 10 mm resolution with a specified 5–10 mm minimum detectable object (MDO) range.
This makes it suitable for applications requiring detection of relatively small objects, parts presence confirmation and automated equipment monitoring.
2. 8 Parallel Infrared Beams
The sensor uses 8 parallel infrared beams to create a defined detection zone.
The multi‑beam structure allows detection across the protected height instead of relying on a single sensing point.
3. 280 mm Protection Height
With a 40 mm optical axis pitch and 8 optical beams, the DPR-0840-NPN-NC provides:
- Optical Axis Quantity: 8 beams
- Optical Axis Pitch: 40 mm
- Protection Height: 280 mm
4. Fast Response Performance
The DPR-0840-NPN-NC provides a response time of:
0.5 ms
Fast response capability supports applications requiring quick detection response in industrial automation systems.
5. Industrial Protection Design
The DPR-0840-NPN-NC is designed for industrial environments with:
- IP65 protection rating
- Oil‑resistant fluorosilicone surface coating
- Anti‑vibration design
- Electromagnetic interference resistance
DPR-0840-NPN-NC Key Features
| Feature | Description |
|---|---|
| Through Beam Infrared Detection | Separate emitter and receiver structure using infrared beam detection. |
| Parallel Beam Configuration | Multiple parallel infrared beams create a defined detection area. |
| 10 mm Resolution | Supports detection requirements with 10 mm resolution specification. |
| NPN NC Output | Normally Closed NPN signal configuration for industrial control systems. |
| DC24V Operation | Designed for common industrial control voltage systems. |
| Wire Synchronization | Uses wire synchronization technology between emitter and receiver. |
| Dual‑Circuit Signal Output | Provides self‑test technology through dual‑circuit signal output design. |
| IP65 Protection | Suitable for industrial environments requiring protection against dust and water exposure. |
| Oil Resistant Surface | Uses fluorosilicone surface coating for oil resistance. |
DPR-0840-NPN-NC Technical Specifications
| Specification | Value |
|---|---|
| Model | DPR-0840-NPN-NC |
| SKU | SH60 |
| Series | DPR Series |
| Detection Method | Through Beam Infrared Detection |
| Beam Configuration | Parallel Beam |
| Optical Axis Quantity | 8 beams |
| Optical Axis Pitch | 40 mm |
| Resolution | 10 mm |
| Minimum Detectable Object (MDO) | 5–10 mm |
| Protection Height | 280 mm |
| Total Height | 366 mm |
| Maximum Detection Distance | 3 m |
| Power Supply | DC24V ±20% |
| Response Time | 0.5 ms |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
| Connector | M12 Cable |
| Output Current | ≤200 mA |
| Power Consumption | <5 W |
| Cross Section Size | 29 × 30 mm |
| Protection Rating | IP65 |
| Housing Material | Aluminum Alloy |
| Synchronization Method | Wire Synchronization |
| Operating Temperature | -10°C to 55°C |
| Operating Humidity | Relative Humidity <85% at 20°C |
| Ambient Light Resistance | 10000 Lux (incident angle >5°) |
Understanding DPR-0840-NPN-NC Model Number
The DPR-0840-NPN-NC model code identifies the key configuration parameters of the DAPPRA DPR Series Safety Light Curtain Area Sensor.
| Code | Meaning |
|---|---|
| DPR | DAPPRA DPR Series |
| 08 | 8 Optical Beams |
| 40 | 40 mm Optical Axis Pitch |
| NPN | NPN Output Type |
| NC | Normally Closed Signal Logic |
The complete model identification:
DPR-0840-NPN-NC (SKU: SH60)
represents a DPR Series Safety Light Curtain Area Sensor with 8 beams, 40 mm optical axis pitch, NPN output and Normally Closed signal logic.
DAPPRA DPR Series Safety Light Curtain Area Sensor Model Selection Table
The DAPPRA DPR Series includes multiple Industrial Safety Light Curtain Area Sensor configurations with different beam quantities, optical axis pitch, output types and signal logic options.
The following table helps engineers select the suitable DPR Series model according to application requirements.
| Model | SKU | Beam Quantity | Optical Axis Pitch | Protection Height | Resolution | Output Type | Signal Logic |
|---|---|---|---|---|---|---|---|
| DPR-0840-PNP-NC | SH60 | 8 Beams | 40 mm | 280 mm | 10 mm | PNP | NC |
| DPR-0840-NPN-NC | SH60 | 8 Beams | 40 mm | 280 mm | 10 mm | NPN | NC |
| DPR-1240-NPN-NC | SH62 | 12 Beams | 40 mm | 440 mm | 10 mm | NPN | NC |
| DPR-1640-NPN-NC | SH64 | 16 Beams | 40 mm | 600 mm | 10 mm | NPN | NC |
DPR-0840-NPN-NC NPN NC Signal Logic
The DPR-0840-NPN-NC uses an NPN output with NC (Normally Closed) signal logic.
The signal output behavior changes according to the infrared beam detection status.
| Detection Condition | Output Status |
|---|---|
| Normal beam condition: | Output follows NC signal logic. |
| Beam interruption: | Output changes according to NC switching state. |
The NPN NC configuration allows the sensor to interface with industrial control systems requiring Normally Closed signal logic.
NPN NC Output Configuration
- Output Type: NPN
- Signal Logic: NC (Normally Closed)
- Power Supply: DC24V
- Connector: M12 Cable
DPR-0840-NPN-NC Wiring Diagram
The DPR-0840-NPN-NC should be wired according to the DAPPRA DPR Series wiring configuration.
The wiring system includes:
- Emitter connection
- Receiver connection
- DC24V power supply
- 0V connection
- NPN NC output signal
DPR-0840-NPN-NC Installation Methods
The DPR-0840-NPN-NC can be installed according to different machine structures and protection requirements.
The DPR Series supports three installation configurations:
| Installation Method | Description |
|---|---|
| L1 Top & Bottom Installation | Standard installation method using top and bottom mounting brackets. |
| L2 Side Installation | Side‑mounted installation option for different machine structures. |
| Cantilever Installation | Multi‑directional adjustable bracket installation option. |
Mounting Accessories
The standard and optional mounting accessories include different bracket configurations for flexible industrial installation.
- Top and bottom mounting brackets
- Side mounting brackets
- Cantilever mounting brackets
- Mounting screws and hardware
DPR-0840-NPN-NC Dimension Information
The DPR-0840-NPN-NC is designed with a compact industrial housing structure suitable for integration into automation equipment.
| Dimension Parameter | Value |
|---|---|
| Protection Height | 280 mm |
| Total Height | 366 mm |
| Cross Section | 29 × 30 mm |
| A1 | 9 mm |
| A2 | 12 mm |
| B1 | 20 mm |
| B2 | 47 mm |
| A3 | 33 mm |
DPR-0840-NPN-NC Industrial Applications
The DPR-0840-NPN-NC Safety Light Curtain Area Sensor is designed for industrial automation applications requiring multi‑beam object detection and machine protection.
Typical application areas include:
- Press Machinery
- Injection Molding Machinery
- Press Brake Machinery
- Automated Assembly and Wiring Equipment
- Shearing Machinery
- Cutting Machinery
- Pressing Machinery
- Automated Storage Equipment
- Woodworking Machinery
- Stamping Machinery
- Lifting Control Machinery
- Welding Production Lines
- Vertical Parking Systems
- Hazardous Machine Applications
- Falling Object Detection Applications
The sensor can establish a defined infrared detection area around industrial equipment where object detection or machine protection is required.
Industrial Environment Performance
Designed for Demanding Automation Environments
The DPR-0840-NPN-NC is designed for industrial automation environments where equipment may experience humidity, water exposure, oil contamination, mechanical vibration and electromagnetic interference.
Environmental Protection Features
| Feature | Description |
|---|---|
| IP65 Protection | Protection design for industrial environments requiring resistance to dust and water exposure. |
| Oil Resistance | Surface protection using fluorosilicone coating for oil‑resistant performance. |
| Anti‑Vibration Design | Designed for stable operation in industrial machinery environments. |
| Anti‑Interference Design | Uses wire synchronization technology to improve resistance against electromagnetic interference. |
| Ambient Light Resistance | 10000 Lux (incident angle >5°) |
| Operating Temperature | -10°C to 55°C |
| Operating Humidity | Relative humidity <85% at 20°C |
DPR-0840-NPN-NC Safety Certification and Compliance
The DPR-0840-NPN-NC is supported by functional safety and product compliance documentation.
SIL 2 Functional Safety Certification
The DPR-0840-NPN-NC is supported by SIL 2 Functional Safety documentation according to IEC 61508 requirements.
| Safety Parameter | Specification |
|---|---|
| Safety Level | SIL 2 |
| Applicable Standard | IEC 61508 |
| Certification Type | Third‑Party Functional Safety Certification |
Product Compliance Documentation
- SIL 2 Functional Safety Certificate
- CE Certification
- FCC Certification
- RoHS Compliance
DAPPRA Automation Manufacturing and Quality Assurance
The DPR Series is produced by DAPPRA Automation's own manufacturing facility.
DAPPRA provides industrial automation products with production control and quality inspection processes.
Quality Assurance Process
- Factory Quality Control
- 100% Product Inspection
- Functional Testing
- Incoming Material Inspection
- Aging Test
- Final Inspection
DPR-0840-NPN-NC Standard Product Package
The DPR-0840-NPN-NC standard package includes the complete sensor system and required installation accessories for industrial installation.
| Package Item | Quantity / Description |
|---|---|
| Emitter | 1 unit |
| Receiver | 1 unit |
| Connecting Cables | 2 cables |
| Standard Mounting Accessories | Included |
The complete package allows installation of the emitter and receiver system for through‑beam infrared detection applications.
DPR-0840-NPN-NC Technical Resources
DAPPRA provides technical documents to support product selection, installation and engineering integration.
DPR-0840-NPN-NC Datasheet
Complete technical specifications, electrical parameters, dimensions and product information.
DPR-0840-NPN-NC Installation Guide
Installation reference information including mounting and configuration guidance.
DPR-0840-NPN-NC CAD Drawing
Engineering drawing information for mechanical integration and installation design.
DPR-0840-NPN-NC Engineering FAQ
The DAPPRA DPR-0840-NPN-NC (SKU: SH60) is a DPR Series Safety Light Curtain Area Sensor using through‑beam infrared detection technology with 8 parallel infrared beams, 40 mm optical axis pitch, 10 mm resolution, 280 mm protection height and NPN NC output configuration.
An Industrial Safety Light Curtain Area Sensor is a multi‑beam photoelectric sensor that uses multiple light beams to create a detection area instead of relying on a single detection point. It is commonly used for machine safeguarding, object detection, and automation applications.
The DPR-0840-NPN-NC uses through‑beam infrared detection with a separate emitter and receiver. The emitter sends parallel infrared beams to the receiver. When an object interrupts one or more beams, the receiver detects the change and provides the output signal.
The main factors for selecting a Safety Light Curtain Area Sensor include object size requirement, resolution, minimum detectable object (MDO), optical axis pitch, protection height, beam quantity, detection distance, output type, installation method and industrial environment conditions.
Optical axis pitch is the distance between adjacent optical beams in a Safety Light Curtain Area Sensor. The DPR Series includes different optical axis pitch configurations including 10 mm, 20 mm and 40 mm options.
The DPR-0840-NPN-NC has a specified resolution of 10 mm.
The specified Minimum Detectable Object (MDO) range of the DPR-0840-NPN-NC is 5–10 mm.
For DPR Series Safety Light Curtain Area Sensors, protection height is calculated as (Beam Quantity − 1) × Optical Axis Pitch. For DPR-0840-NPN-NC, (8 − 1) × 40 mm equals 280 mm protection height.
The DPR-0840-NPN-NC has 8 optical beams.
The optical axis pitch of DPR-0840-NPN-NC is 40 mm.
The DPR-0840-NPN-NC provides a 280 mm protection height.
The maximum detection distance of DPR-0840-NPN-NC is 3 m.
The DPR-0840-NPN-NC operates with a DC24V ±20% power supply.
The DPR-0840-NPN-NC uses an NPN output configuration with NC (Normally Closed) signal logic.
NC means Normally Closed signal logic. For the DPR-0840-NPN-NC, the normal beam condition provides 0V output, while beam interruption results in no output.
The DPR-0840-NPN-NC response time is 0.5 ms.
The DPR-0840-NPN-NC uses an M12 cable connection.
Yes. The DPR-0840-NPN-NC is designed for industrial automation environments with IP65 protection, oil‑resistant fluorosilicone coating, anti‑vibration design and electromagnetic interference resistance.
The DPR-0840-NPN-NC uses wire synchronization technology.
The DPR-0840-NPN-NC uses a dual‑circuit signal output design as a self‑test technology to improve operational safety.
The DPR-0840-NPN-NC supports three installation methods: L1 top and bottom installation, L2 side installation and cantilever installation.
Typical applications include press machinery, injection molding machinery, stamping equipment, welding production lines, automated storage equipment, woodworking machinery and other industrial automation applications requiring multi‑beam detection.
Yes. The DPR-0840-NPN-NC can be used for falling object detection applications where multi‑beam infrared detection is required.
The DPR-0840-NPN-NC is supported by SIL 2 Functional Safety Certification, IEC 61508 applicable standard, CE Certification, FCC Certification and RoHS Compliance documentation.
Optical axis pitch is the distance between adjacent beams, while resolution describes the minimum detectable object capability of the sensor. A smaller pitch generally provides higher detection capability.
Yes. Because the DPR-0840-NPN-NC uses multiple parallel infrared beams, it can detect objects entering different positions within the sensing area.
DPR-0840-NPN-NC is a DAPPRA DPR Series industrial safety light curtain area sensor with similar application requirements to some 40mm pitch 8‑beam area sensors. Product compatibility should be verified according to electrical specifications and application requirements.
Technical documents are available in the Technical Resources section:
The total height of DPR-0840-NPN-NC is 366 mm, which includes the housing and mounting structure beyond the 280 mm protection height.
The DPR-0840-NPN-NC has an ambient light resistance of 10000 Lux (incident angle >5°), making it suitable for industrial environments with varying lighting conditions.
Yes, the DAPPRA DPR-0840-NPN-NC (SKU: SH60) is designed as a compatible alternative to BW40-08 and similar 8‑beam, 40 mm pitch safety light curtain area sensors. However, please verify electrical specifications, output configuration (NPN NC), mounting dimensions and application requirements to ensure proper replacement and compatibility.
DAPPRA DPR-0840-NPN-NC Safety Light Curtain Area Sensor Summary
The DAPPRA DPR-0840-NPN-NC (SKU: SH60) combines multi‑beam infrared detection, 10 mm resolution, 280 mm protection height, NPN NC output and industrial protection features in a compact Safety Light Curtain Area Sensor solution.
Designed for engineers selecting safety light curtains and area sensors for automation equipment, the DPR-0840-NPN-NC provides a complete solution supported by technical documentation, installation guidance, certification records and manufacturing quality processes.
Need Technical Support or a Quote?
Contact DAPPRA Automation for engineering assistance, pricing, or OEM/ODM inquiries.
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