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DPF-1440-NPN-NC Safety Light Curtain Industrial Area Sensor
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DAPPRA DPF-1440-NPN-NC is a 14-beam Press Machine Safety Light Curtain with 40 mm optical axis pitch and 520 mm protection height. Controller-based signal detection, 50 × 35 mm aluminum alloy housing, 610 mm total height, NPN NC output, ≤5 ms response time, IP65 protection, ideal for press machines, stamping equipment and vibration-heavy industrial applications.
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✦ Press Machine Safety Light Curtain
Controller-Based
NPN NC
IP65
DPF-1440-NPN-NC
Press Machine Safety Light Curtain · 14-Beam · 40 mm Pitch · 520 mm Protection Height
The DAPPRA DPF-1440-NPN-NC is a fourteen-beam Press Machine Safety Light Curtain designed for stamping machines, cutting equipment, extrusion equipment and other vibration-heavy industrial installations.
It uses separate EMITTER and RECEIVER units with a dedicated controller for signal detection and relay output. The product provides a 520 mm protection height, with a 50 × 35 mm aluminum alloy housing and an internal vibration-resistant structure, NPN normally closed output and a ≤5 ms response time.
The DPF Series works with an optional DSC-E220 built-in controller or DSC-G220 external controller, supporting AC110–220V and AC380V working voltages for different industrial power environments.
Primary Product Classification: Press Machine Safety Light Curtain.
Related Industry Terminology: Safety Light Curtain / Industrial Area Sensor / Press Machine Guarding.
Product Overview
DAPPRA DPF-1440-NPN-NC is a fourteen-beam Press Machine Safety Light Curtain designed for stamping machines, cutting equipment, extrusion equipment and other vibration-heavy industrial installations. It uses separate EMITTER and RECEIVER units with a dedicated controller for signal detection and relay output, providing a 520 mm protection height with a 50 × 35 mm aluminum alloy housing, NPN normally closed output and a ≤5 ms response time.
The DPF Series uses Multiple Parallel Beam Through-Beam Detection Technology and adopts a controller-based signal detection design, with the controller handling light curtain signal detection and relay output. It supports 10 mm, 20 mm and 40 mm optical-axis pitch configurations for pressing, cutting and extrusion equipment.
The DPF-1440-NPN-NC is suitable for press machine safety protection, stamping equipment guarding, cutting machine safety and other vibration-heavy industrial applications.
DPF-1440-NPN-NC Key Features
- Controller-Based Signal Detection
- 50 × 35 mm Aluminum Alloy Housing
- 14 Optical Beams
- 40 mm Optical-Axis Pitch
- 520 mm Protection Height
- 610 mm Total Height
- Vibration-Resistant Internal Structure
- Strong Interference Resistance
- ≤5 ms Response Time
- 0.1–3 m Protection Distance (Standard)
- NPN Normally Closed Output
- AC110–220V / AC380V Working Voltage
- IP65 Protection Rating
- Double-Circuit Self-Checking Output
- DSC-E220 / DSC-G220 Controller Options
- One Controller Supports Multiple Sensor Sets
- Side / Cantilever / Integrated Tube Mounting
Controller-Based Design with Vibration Resistance
The DPF Series adopts a controller-based signal detection architecture. The controller handles light curtain signal detection and relay output, which simplifies the sensor wiring and improves reliability in industrial power environments. Working voltage is AC110–220V for the built-in DSC-E220 and AC220V for the external DSC-G220, with 380V available on request.
The product uses a 50 × 35 mm aluminum alloy housing with an internal vibration-resistant structure. Combined with strong interference resistance against motor and electromagnetic equipment, this design supports stable detection on pressing, cutting and extrusion machines where vibration is continuous.
The DPF Series focuses on achieving a balance between vibration resistance, signal stability and press machine compatibility.
Product Specifications
| Parameter | DPF-1440-NPN-NC |
|---|---|
| Product Series | DPF Series |
| Product Type | Press Machine Safety Light Curtain |
| SKU | OL07 |
| Optical Beam Quantity | 14 Beams |
| Optical-Axis Pitch | 40 mm |
| Protection Height | 520 mm |
| Total Height | 610 mm |
| Housing Cross Section | 50 × 35 mm (Aluminum Alloy) |
| Response Time | ≤5 ms |
| Protection Distance | 0.1–3 m (Standard) / up to 20 m (Customized) |
| Working Voltage | AC110–220V / AC380V (via controller) |
| Output | NPN |
| Signal Logic | NC (Normally Closed) |
| Signal Output | Relay output via controller |
| Self-Checking | Double-Circuit Self-Checking Output |
| Protection Rating | IP65 |
| Operating Temperature | -10°C to +55°C |
| Housing Material | Aluminum Alloy with Vibration-Resistant Structure |
| Interference Resistance | Motor / Electromagnetic Equipment |
| Cable Length | 3 m (Standard) / Custom Available |
| Controller Options | DSC-E220 Built-in / DSC-G220 External |
Optical Detection Structure
The DPF-1440-NPN-NC uses separate EMITTER and RECEIVER units to create a parallel infrared detection field. The signal is transmitted to the controller, which performs detection and provides relay output.
The 14 optical beams are arranged with a 40 mm optical-axis pitch, providing a 520 mm protection height.
EMITTER → Parallel Infrared Beams → RECEIVER → CONTROLLER → RELAY OUTPUT
When an object or person interrupts the infrared beam path, the receiver detects the change in the optical field and transmits the signal to the controller, which provides the corresponding NPN NC relay output.
Area Sensor vs Safety Light Curtain
The terms Area Sensor and Safety Light Curtain are commonly used in industrial automation to describe multi-beam photoelectric detection products, but they may represent different technical and safety requirements depending on the application.
An Industrial Area Sensor is generally used for multi-beam detection of personnel, objects, access areas and machine processes.
A Safety Light Curtain is typically associated with machine protection and applications where specific functional-safety requirements and applicable safety standards need to be considered.
The DPF-1440-NPN-NC is designed as a Press Machine Safety Light Curtain for stamping, cutting and extrusion equipment, using a controller for signal detection and relay output. The appropriate safety configuration and integration should be determined according to the machine risk assessment and applicable safety requirements.
Press Machine Safety Light Curtain
Fast ≤5 ms Response
With a response time of ≤5 ms, the DPF-1440-NPN-NC provides fast detection for press machine safety applications, supporting rapid response to objects or personnel entering or passing through the sensing area.
Combined with the double-circuit self-checking output and the controller's relay output stage, the DPF Series supports reliable machine protection in vibration-heavy industrial environments.
Strong Interference Resistance
The DPF Series is designed to effectively resist interference from motor equipment and electromagnetic equipment, ensuring stable detection in complex industrial environments. This makes the DPF Series suitable for press machines and stamping equipment where electrical noise from motors and hydraulic systems is common.
IP65 Protection for Industrial Environments
The DPF-1440-NPN-NC features an IP65 protection rating, making it suitable for industrial automation environments where protection against dust and water jets is required.
The operating temperature range is -10°C to +55°C.
NPN Normally Closed Output
The DPF-1440-NPN-NC uses an NPN Normally Closed (NC) output configuration, with relay signal output handled by the dedicated controller. NPN NO, PNP NC and PNP NO output options are also available within the DPF Series.
DPF-1440-NPN-NC Model Information
The model number identifies the DPF Series configuration, beam quantity, optical-axis pitch, output type and signal logic.
Model Code
DPF
-
14
40
-
NPN
-
NC
DPF
Series prefix — DAPPRA DPF Series Press Machine Safety Light Curtain.
14 — Beam Quantity
Number of optical beams. This model uses 14 optical beams.
40 — Optical-Axis Pitch
Optical-axis pitch in mm. This model uses 40 mm beam spacing.
NPN — Output Type
Output transistor type. This model uses NPN transistor output.
NC — Output Logic
NC = Normally Closed; NO = Normally Open. This model uses Normally Closed logic.
Field
Meaning
Value
DPF
Series prefix
DPF
Beam Quantity
Number of optical beams
14
Optical-Axis Pitch
Distance between adjacent optical axes
40 mm
Output Type
Transistor output configuration
NPN
Output Logic
Signal logic state
NC (Normally Closed)
Example: DPF-1440-NPN-NC = DPF Series, 14 beams, 40 mm optical-axis pitch,
NPN output, Normally Closed logic.
Dimensions
The DPF-1440-NPN-NC features a 50 × 35 mm aluminum alloy housing with a 520 mm protection height and 610 mm total height.
Key dimensions:
- Housing Cross Section: 50 × 35 mm
- Optical-Axis Pitch: 40 mm
- Protection Height: 520 mm
- Total Height: 610 mm
Installation Method
The DPF Series supports multiple mounting configurations for different press machine structures. Standard side mounting brackets are included, with cantilever brackets and integrated tube brackets available as options.
The 50 × 35 mm aluminum alloy housing provides a stable mounting base while maintaining the internal vibration-resistant structure required for press machine environments.
The EMITTER and RECEIVER should be securely installed and accurately aligned to ensure reliable infrared detection on the press machine frame.
- Side Mounting Brackets — Standard side mounting with M6 screws and sliding blocks
- Cantilever Brackets — Extended mounting positions with rotary arm and support rod
- Integrated Tube Brackets — Complete mounting structure with φ27 tubes for large press machines
DPF Series Model Selection
The DPF Series provides different beam quantities, optical-axis pitches and protection heights for different press machine protection requirements.
For the DPF-1440-NPN-NC:
DPF-1440-NPN-NC → 14 Beams · 40 mm Optical-Axis Pitch · 520 mm Protection Height · 610 mm Total Height
For the complete DPF Series model selection table, including different beam quantities, optical-axis pitches and protection heights, please visit the DPF Series page. [VIEW DPF SERIES MODEL SELECTION →]
Wiring & Controller Compatibility
The DPF-1440-NPN-NC provides an NPN normally closed output with relay signal output handled by the dedicated controller. Working voltage is AC110–220V via the built-in DSC-E220, or AC220V via the external DSC-G220, with 380V available on request.
It can be connected to compatible machine control circuits through the controller's relay output stage.
Before connection, verify the input type and wiring configuration of the control system and select the correct controller model for the working voltage environment.
The DPF Series uses separate EMITTER and RECEIVER units with wired synchronization. The connection method follows the established DAPPRA DPR Series configuration.
| Electrical Configuration | Specification |
|---|---|
| Working Voltage | AC110–220V / AC380V (via controller) |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
| Signal Output | Relay output via controller |
| Self-Checking | Double-Circuit Self-Checking Output |
| Synchronization | Wired Synchronization |
| Controller Options | DSC-E220 / DSC-G220 |
Controller Options
The DPF Series requires a dedicated controller for signal detection and relay output. Two controller configurations are available:
Built-in Controller
DAPPRA DSC-E220
DAPPRA DSC-E220 is a built-in controller designed for installation inside the machine cabinet. It provides power and control functions for compatible Safety Light Curtain and Press Machine Safety Light Curtain systems. Working voltage AC110–220V.
View DSC-E220 Built-in Controller →External Controller
DAPPRA DSC-G220
DAPPRA DSC-G220 is an external controller designed for use with compatible Safety Light Curtain and Press Machine Safety Light Curtain systems. It provides an external control interface with enhanced enclosure and improved functions. Working voltage AC220V, with 380V available on request.
View DSC-G220 External Controller →One controller can manage multiple DPF sensor sets, forming multi-face protection such as one-to-two or one-to-three configurations for larger press machines.
Applications
Press Machine and Stamping Applications
- Press Machines
- Stamping Equipment
- Bending Machines
- Hydraulic Presses
Vibration-Heavy Industrial Equipment
- Cutting Equipment
- Extrusion Equipment
- Automated Equipment
- Medium & Small Machinery
- General Industrial Automation
FAQ
Common questions about safety light curtains, area sensors and DPF-1440-NPN-NC selection.
What is the difference between a Safety Light Curtain and an Area Sensor?
+
A Safety Light Curtain is typically used for machine safety protection, where functional safety requirements and applicable standards need to be considered. An Area Sensor is generally used for multi-beam detection of personnel, objects, access areas and machine processes.
The DPF-1440-NPN-NC is positioned as a Press Machine Safety Light Curtain with controller-based signal detection and relay output, designed for press machines, shearing machines and other vibration-heavy equipment.
How do I choose the correct protection or detection height?
+
Choose the protection height according to the machine opening, the hazard zone and the required detection area. The DPF-1440-NPN-NC provides a 520 mm protection height and a 610 mm total height, with 14 beams at 40 mm optical-axis pitch.
It is suitable for medium machine openings on press machines, shearing machines, cutting equipment and similar applications.
What beam spacing or resolution should I choose?
+
For hand or finger detection, a smaller beam spacing such as 10 mm or 20 mm is usually required. For body protection, larger objects or area guarding, a 30 mm or 40 mm spacing can be suitable.
The DPF-1440-NPN-NC uses a 40 mm optical-axis pitch, making it suitable for body protection, larger object detection and machine opening guarding where finer finger-level resolution is not required.
What is the difference between 10mm, 20mm, 30mm and 40mm resolution or beam spacing?
+
Smaller spacing provides higher detection resolution but requires more beams for the same height. 10 mm and 20 mm spacing are often used for hand or finger protection, while 30 mm and 40 mm spacing are more common for body protection, object detection and larger openings.
The DPF-1440-NPN-NC uses 40 mm spacing with 14 beams to provide a 520 mm protection height, balancing coverage and cost for press machine and shearing machine protection.
Can a safety light curtain be used for a press machine?
+
Yes. The DPF-1440-NPN-NC is designed as a Press Machine Safety Light Curtain. It features a vibration-resistant internal structure, strong interference resistance, ≤5 ms response time and NPN NC output with controller-based relay output.
It can be used with the DSC-E220 built-in controller or DSC-G220 external controller for press machine safety protection.
Can a safety light curtain be used for a shearing machine?
+
Yes. The DPF-1440-NPN-NC is suitable for shearing machines, cutting equipment and similar vibration-heavy machinery. Its 520 mm protection height, 40 mm pitch and 50 × 35 mm aluminum alloy housing support stable detection in industrial environments.
Safety distance, mounting position and controller configuration should be determined according to the machine risk assessment and applicable safety requirements.
How do I calculate the safety distance for a light curtain?
+
Safety distance depends on the machine stopping time, the light curtain response time, detection capability or resolution, approach speed and installation direction. It is usually calculated according to standards such as ISO 13855 or equivalent local requirements.
The DPF-1440-NPN-NC has a response time of ≤5 ms, but the final safety distance must be calculated by a qualified person using the actual machine stopping performance and risk assessment.
Can a safety light curtain or area sensor be connected to a PLC?
+
Yes. The DPF-1440-NPN-NC uses a dedicated controller for signal detection and relay output. The controller relay output can be connected to a compatible PLC or machine control circuit.
Before connection, verify the PLC input type, wiring configuration and the controller output specification to ensure correct integration.
What is the difference between NPN and PNP outputs?
+
NPN output is a sinking output that switches the negative side, while PNP output is a sourcing output that switches the positive side. The correct type depends on the PLC or controller input configuration.
The DPF-1440-NPN-NC uses an NPN Normally Closed (NC) output with relay output handled by the dedicated controller. NPN NO, PNP NC and PNP NO options are also available within the DPF Series.
What certifications should a safety light curtain have?
+
Certification requirements depend on the target market and the machine risk assessment. Common standards include CE, ISO 13849, IEC 61496 and other applicable functional safety requirements.
DAPPRA can provide product specifications and technical documentation for the DPF-1440-NPN-NC. The final safety configuration and integration should be determined according to the machine risk assessment and applicable safety standards.
How much does a safety light curtain or area sensor cost in Indonesia?
+
Price depends on beam quantity, protection height, optical-axis pitch, output type, controller selection, mounting accessories and quantity. The DPF-1440-NPN-NC has 14 beams, 40 mm pitch, 520 mm protection height and NPN NC output.
For an Indonesia price quotation, contact DAPPRA with your machine opening, required protection height, detection distance, controller voltage and mounting requirements.
Where can I buy safety light curtains or area sensors in Indonesia?
+
DAPPRA supplies DPF Series Press Machine Safety Light Curtains and compatible controllers in Indonesia. You can contact DAPPRA for product selection, technical documentation, stock availability and purchasing support.
For the DPF-1440-NPN-NC, DAPPRA can assist with controller selection, wiring guidance and mounting recommendations based on your application.
How does DAPPRA compare with other safety light curtain or area sensor brands?
+
DAPPRA focuses on controller-based DPF Series safety light curtains with vibration resistance, signal stability and press machine compatibility. The DPF-1440-NPN-NC offers 14 beams, 40 mm pitch, 520 mm protection height and multiple controller options.
Compared with general-purpose area sensors or other brands, DAPPRA provides application-oriented selection support and Indonesia-based technical and purchasing assistance. The best choice depends on the machine risk assessment, required resolution, protection height and control interface.
Discover More
Explore the DAPPRA Press Machine Safety Light Curtain Series
View all DPF Series products and find the right solution for your press machine protection application.
View All SeriesNeed Help?
Need DPF-1440-NPN-NC for Your Application?
Contact DAPPRA Automation for product specifications, controller selection, technical documentation and purchasing support.
Contact DAPPRA EngineerRelated Technical Articles
Hanya pelanggan yang telah membeli produk ini dapat memberikan ulasan.
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Related Technical Articles
✦ Press Machine Safety Light Curtain
Controller-Based
NPN NC
IP65
DPF-1440-NPN-NC
Press Machine Safety Light Curtain · 14-Beam · 40 mm Pitch · 520 mm Protection Height
The DAPPRA DPF-1440-NPN-NC is a fourteen-beam Press Machine Safety Light Curtain designed for stamping machines, cutting equipment, extrusion equipment and other vibration-heavy industrial installations.
It uses separate EMITTER and RECEIVER units with a dedicated controller for signal detection and relay output. The product provides a 520 mm protection height, with a 50 × 35 mm aluminum alloy housing and an internal vibration-resistant structure, NPN normally closed output and a ≤5 ms response time.
The DPF Series works with an optional DSC-E220 built-in controller or DSC-G220 external controller, supporting AC110–220V and AC380V working voltages for different industrial power environments.
Primary Product Classification: Press Machine Safety Light Curtain.
Related Industry Terminology: Safety Light Curtain / Industrial Area Sensor / Press Machine Guarding.
Product Overview
DAPPRA DPF-1440-NPN-NC is a fourteen-beam Press Machine Safety Light Curtain designed for stamping machines, cutting equipment, extrusion equipment and other vibration-heavy industrial installations. It uses separate EMITTER and RECEIVER units with a dedicated controller for signal detection and relay output, providing a 520 mm protection height with a 50 × 35 mm aluminum alloy housing, NPN normally closed output and a ≤5 ms response time.
The DPF Series uses Multiple Parallel Beam Through-Beam Detection Technology and adopts a controller-based signal detection design, with the controller handling light curtain signal detection and relay output. It supports 10 mm, 20 mm and 40 mm optical-axis pitch configurations for pressing, cutting and extrusion equipment.
The DPF-1440-NPN-NC is suitable for press machine safety protection, stamping equipment guarding, cutting machine safety and other vibration-heavy industrial applications.
DPF-1440-NPN-NC Key Features
- Controller-Based Signal Detection
- 50 × 35 mm Aluminum Alloy Housing
- 14 Optical Beams
- 40 mm Optical-Axis Pitch
- 520 mm Protection Height
- 610 mm Total Height
- Vibration-Resistant Internal Structure
- Strong Interference Resistance
- ≤5 ms Response Time
- 0.1–3 m Protection Distance (Standard)
- NPN Normally Closed Output
- AC110–220V / AC380V Working Voltage
- IP65 Protection Rating
- Double-Circuit Self-Checking Output
- DSC-E220 / DSC-G220 Controller Options
- One Controller Supports Multiple Sensor Sets
- Side / Cantilever / Integrated Tube Mounting
Controller-Based Design with Vibration Resistance
The DPF Series adopts a controller-based signal detection architecture. The controller handles light curtain signal detection and relay output, which simplifies the sensor wiring and improves reliability in industrial power environments. Working voltage is AC110–220V for the built-in DSC-E220 and AC220V for the external DSC-G220, with 380V available on request.
The product uses a 50 × 35 mm aluminum alloy housing with an internal vibration-resistant structure. Combined with strong interference resistance against motor and electromagnetic equipment, this design supports stable detection on pressing, cutting and extrusion machines where vibration is continuous.
The DPF Series focuses on achieving a balance between vibration resistance, signal stability and press machine compatibility.
Product Specifications
| Parameter | DPF-1440-NPN-NC |
|---|---|
| Product Series | DPF Series |
| Product Type | Press Machine Safety Light Curtain |
| SKU | OL07 |
| Optical Beam Quantity | 14 Beams |
| Optical-Axis Pitch | 40 mm |
| Protection Height | 520 mm |
| Total Height | 610 mm |
| Housing Cross Section | 50 × 35 mm (Aluminum Alloy) |
| Response Time | ≤5 ms |
| Protection Distance | 0.1–3 m (Standard) / up to 20 m (Customized) |
| Working Voltage | AC110–220V / AC380V (via controller) |
| Output | NPN |
| Signal Logic | NC (Normally Closed) |
| Signal Output | Relay output via controller |
| Self-Checking | Double-Circuit Self-Checking Output |
| Protection Rating | IP65 |
| Operating Temperature | -10°C to +55°C |
| Housing Material | Aluminum Alloy with Vibration-Resistant Structure |
| Interference Resistance | Motor / Electromagnetic Equipment |
| Cable Length | 3 m (Standard) / Custom Available |
| Controller Options | DSC-E220 Built-in / DSC-G220 External |
Optical Detection Structure
The DPF-1440-NPN-NC uses separate EMITTER and RECEIVER units to create a parallel infrared detection field. The signal is transmitted to the controller, which performs detection and provides relay output.
The 14 optical beams are arranged with a 40 mm optical-axis pitch, providing a 520 mm protection height.
EMITTER → Parallel Infrared Beams → RECEIVER → CONTROLLER → RELAY OUTPUT
When an object or person interrupts the infrared beam path, the receiver detects the change in the optical field and transmits the signal to the controller, which provides the corresponding NPN NC relay output.
Area Sensor vs Safety Light Curtain
The terms Area Sensor and Safety Light Curtain are commonly used in industrial automation to describe multi-beam photoelectric detection products, but they may represent different technical and safety requirements depending on the application.
An Industrial Area Sensor is generally used for multi-beam detection of personnel, objects, access areas and machine processes.
A Safety Light Curtain is typically associated with machine protection and applications where specific functional-safety requirements and applicable safety standards need to be considered.
The DPF-1440-NPN-NC is designed as a Press Machine Safety Light Curtain for stamping, cutting and extrusion equipment, using a controller for signal detection and relay output. The appropriate safety configuration and integration should be determined according to the machine risk assessment and applicable safety requirements.
Press Machine Safety Light Curtain
Fast ≤5 ms Response
With a response time of ≤5 ms, the DPF-1440-NPN-NC provides fast detection for press machine safety applications, supporting rapid response to objects or personnel entering or passing through the sensing area.
Combined with the double-circuit self-checking output and the controller's relay output stage, the DPF Series supports reliable machine protection in vibration-heavy industrial environments.
Strong Interference Resistance
The DPF Series is designed to effectively resist interference from motor equipment and electromagnetic equipment, ensuring stable detection in complex industrial environments. This makes the DPF Series suitable for press machines and stamping equipment where electrical noise from motors and hydraulic systems is common.
IP65 Protection for Industrial Environments
The DPF-1440-NPN-NC features an IP65 protection rating, making it suitable for industrial automation environments where protection against dust and water jets is required.
The operating temperature range is -10°C to +55°C.
NPN Normally Closed Output
The DPF-1440-NPN-NC uses an NPN Normally Closed (NC) output configuration, with relay signal output handled by the dedicated controller. NPN NO, PNP NC and PNP NO output options are also available within the DPF Series.
DPF-1440-NPN-NC Model Information
The model number identifies the DPF Series configuration, beam quantity, optical-axis pitch, output type and signal logic.
Model Code
DPF
-
14
40
-
NPN
-
NC
DPF
Series prefix — DAPPRA DPF Series Press Machine Safety Light Curtain.
14 — Beam Quantity
Number of optical beams. This model uses 14 optical beams.
40 — Optical-Axis Pitch
Optical-axis pitch in mm. This model uses 40 mm beam spacing.
NPN — Output Type
Output transistor type. This model uses NPN transistor output.
NC — Output Logic
NC = Normally Closed; NO = Normally Open. This model uses Normally Closed logic.
Field
Meaning
Value
DPF
Series prefix
DPF
Beam Quantity
Number of optical beams
14
Optical-Axis Pitch
Distance between adjacent optical axes
40 mm
Output Type
Transistor output configuration
NPN
Output Logic
Signal logic state
NC (Normally Closed)
Example: DPF-1440-NPN-NC = DPF Series, 14 beams, 40 mm optical-axis pitch,
NPN output, Normally Closed logic.
Dimensions
The DPF-1440-NPN-NC features a 50 × 35 mm aluminum alloy housing with a 520 mm protection height and 610 mm total height.
Key dimensions:
- Housing Cross Section: 50 × 35 mm
- Optical-Axis Pitch: 40 mm
- Protection Height: 520 mm
- Total Height: 610 mm
Installation Method
The DPF Series supports multiple mounting configurations for different press machine structures. Standard side mounting brackets are included, with cantilever brackets and integrated tube brackets available as options.
The 50 × 35 mm aluminum alloy housing provides a stable mounting base while maintaining the internal vibration-resistant structure required for press machine environments.
The EMITTER and RECEIVER should be securely installed and accurately aligned to ensure reliable infrared detection on the press machine frame.
- Side Mounting Brackets — Standard side mounting with M6 screws and sliding blocks
- Cantilever Brackets — Extended mounting positions with rotary arm and support rod
- Integrated Tube Brackets — Complete mounting structure with φ27 tubes for large press machines
DPF Series Model Selection
The DPF Series provides different beam quantities, optical-axis pitches and protection heights for different press machine protection requirements.
For the DPF-1440-NPN-NC:
DPF-1440-NPN-NC → 14 Beams · 40 mm Optical-Axis Pitch · 520 mm Protection Height · 610 mm Total Height
For the complete DPF Series model selection table, including different beam quantities, optical-axis pitches and protection heights, please visit the DPF Series page. [VIEW DPF SERIES MODEL SELECTION →]
Wiring & Controller Compatibility
The DPF-1440-NPN-NC provides an NPN normally closed output with relay signal output handled by the dedicated controller. Working voltage is AC110–220V via the built-in DSC-E220, or AC220V via the external DSC-G220, with 380V available on request.
It can be connected to compatible machine control circuits through the controller's relay output stage.
Before connection, verify the input type and wiring configuration of the control system and select the correct controller model for the working voltage environment.
The DPF Series uses separate EMITTER and RECEIVER units with wired synchronization. The connection method follows the established DAPPRA DPR Series configuration.
| Electrical Configuration | Specification |
|---|---|
| Working Voltage | AC110–220V / AC380V (via controller) |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
| Signal Output | Relay output via controller |
| Self-Checking | Double-Circuit Self-Checking Output |
| Synchronization | Wired Synchronization |
| Controller Options | DSC-E220 / DSC-G220 |
Controller Options
The DPF Series requires a dedicated controller for signal detection and relay output. Two controller configurations are available:
Built-in Controller
DAPPRA DSC-E220
DAPPRA DSC-E220 is a built-in controller designed for installation inside the machine cabinet. It provides power and control functions for compatible Safety Light Curtain and Press Machine Safety Light Curtain systems. Working voltage AC110–220V.
View DSC-E220 Built-in Controller →External Controller
DAPPRA DSC-G220
DAPPRA DSC-G220 is an external controller designed for use with compatible Safety Light Curtain and Press Machine Safety Light Curtain systems. It provides an external control interface with enhanced enclosure and improved functions. Working voltage AC220V, with 380V available on request.
View DSC-G220 External Controller →One controller can manage multiple DPF sensor sets, forming multi-face protection such as one-to-two or one-to-three configurations for larger press machines.
Applications
Press Machine and Stamping Applications
- Press Machines
- Stamping Equipment
- Bending Machines
- Hydraulic Presses
Vibration-Heavy Industrial Equipment
- Cutting Equipment
- Extrusion Equipment
- Automated Equipment
- Medium & Small Machinery
- General Industrial Automation
FAQ
Common questions about safety light curtains, area sensors and DPF-1440-NPN-NC selection.
What is the difference between a Safety Light Curtain and an Area Sensor?
+
A Safety Light Curtain is typically used for machine safety protection, where functional safety requirements and applicable standards need to be considered. An Area Sensor is generally used for multi-beam detection of personnel, objects, access areas and machine processes.
The DPF-1440-NPN-NC is positioned as a Press Machine Safety Light Curtain with controller-based signal detection and relay output, designed for press machines, shearing machines and other vibration-heavy equipment.
How do I choose the correct protection or detection height?
+
Choose the protection height according to the machine opening, the hazard zone and the required detection area. The DPF-1440-NPN-NC provides a 520 mm protection height and a 610 mm total height, with 14 beams at 40 mm optical-axis pitch.
It is suitable for medium machine openings on press machines, shearing machines, cutting equipment and similar applications.
What beam spacing or resolution should I choose?
+
For hand or finger detection, a smaller beam spacing such as 10 mm or 20 mm is usually required. For body protection, larger objects or area guarding, a 30 mm or 40 mm spacing can be suitable.
The DPF-1440-NPN-NC uses a 40 mm optical-axis pitch, making it suitable for body protection, larger object detection and machine opening guarding where finer finger-level resolution is not required.
What is the difference between 10mm, 20mm, 30mm and 40mm resolution or beam spacing?
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Smaller spacing provides higher detection resolution but requires more beams for the same height. 10 mm and 20 mm spacing are often used for hand or finger protection, while 30 mm and 40 mm spacing are more common for body protection, object detection and larger openings.
The DPF-1440-NPN-NC uses 40 mm spacing with 14 beams to provide a 520 mm protection height, balancing coverage and cost for press machine and shearing machine protection.
Can a safety light curtain be used for a press machine?
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Yes. The DPF-1440-NPN-NC is designed as a Press Machine Safety Light Curtain. It features a vibration-resistant internal structure, strong interference resistance, ≤5 ms response time and NPN NC output with controller-based relay output.
It can be used with the DSC-E220 built-in controller or DSC-G220 external controller for press machine safety protection.
Can a safety light curtain be used for a shearing machine?
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Yes. The DPF-1440-NPN-NC is suitable for shearing machines, cutting equipment and similar vibration-heavy machinery. Its 520 mm protection height, 40 mm pitch and 50 × 35 mm aluminum alloy housing support stable detection in industrial environments.
Safety distance, mounting position and controller configuration should be determined according to the machine risk assessment and applicable safety requirements.
How do I calculate the safety distance for a light curtain?
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Safety distance depends on the machine stopping time, the light curtain response time, detection capability or resolution, approach speed and installation direction. It is usually calculated according to standards such as ISO 13855 or equivalent local requirements.
The DPF-1440-NPN-NC has a response time of ≤5 ms, but the final safety distance must be calculated by a qualified person using the actual machine stopping performance and risk assessment.
Can a safety light curtain or area sensor be connected to a PLC?
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Yes. The DPF-1440-NPN-NC uses a dedicated controller for signal detection and relay output. The controller relay output can be connected to a compatible PLC or machine control circuit.
Before connection, verify the PLC input type, wiring configuration and the controller output specification to ensure correct integration.
What is the difference between NPN and PNP outputs?
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NPN output is a sinking output that switches the negative side, while PNP output is a sourcing output that switches the positive side. The correct type depends on the PLC or controller input configuration.
The DPF-1440-NPN-NC uses an NPN Normally Closed (NC) output with relay output handled by the dedicated controller. NPN NO, PNP NC and PNP NO options are also available within the DPF Series.
What certifications should a safety light curtain have?
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Certification requirements depend on the target market and the machine risk assessment. Common standards include CE, ISO 13849, IEC 61496 and other applicable functional safety requirements.
DAPPRA can provide product specifications and technical documentation for the DPF-1440-NPN-NC. The final safety configuration and integration should be determined according to the machine risk assessment and applicable safety standards.
How much does a safety light curtain or area sensor cost in Indonesia?
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Price depends on beam quantity, protection height, optical-axis pitch, output type, controller selection, mounting accessories and quantity. The DPF-1440-NPN-NC has 14 beams, 40 mm pitch, 520 mm protection height and NPN NC output.
For an Indonesia price quotation, contact DAPPRA with your machine opening, required protection height, detection distance, controller voltage and mounting requirements.
Where can I buy safety light curtains or area sensors in Indonesia?
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DAPPRA supplies DPF Series Press Machine Safety Light Curtains and compatible controllers in Indonesia. You can contact DAPPRA for product selection, technical documentation, stock availability and purchasing support.
For the DPF-1440-NPN-NC, DAPPRA can assist with controller selection, wiring guidance and mounting recommendations based on your application.
How does DAPPRA compare with other safety light curtain or area sensor brands?
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DAPPRA focuses on controller-based DPF Series safety light curtains with vibration resistance, signal stability and press machine compatibility. The DPF-1440-NPN-NC offers 14 beams, 40 mm pitch, 520 mm protection height and multiple controller options.
Compared with general-purpose area sensors or other brands, DAPPRA provides application-oriented selection support and Indonesia-based technical and purchasing assistance. The best choice depends on the machine risk assessment, required resolution, protection height and control interface.
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