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DPR-1220-NPN-NC Datasheet: Specifications of a 12-Beam Safety Light Curtain
Datasheet
DPR-1220-NPN-NC
Industrial Area Sensor & Safety Light Curtain · 12‑Beam · 20 mm Pitch · 220 mm Protection Height
The DAPPRA DPR-1220-NPN-NC is a DPR Series Industrial Area Sensor and Safety Light Curtain designed for multi‑beam object detection, machine protection and personnel protection applications. It uses through‑beam infrared detection with 12 optical beams at a 20 mm optical axis pitch, creating a 220 mm protection height.
12Optical Beams
20 mmOptical Pitch
220 mmProtection Height
286 mmTotal Height
NPN NCOutput
Product Overview
The DAPPRA DPR-1220-NPN-NC is a DPR Series Industrial Area Sensor and Safety Light Curtain for industrial object detection, machine protection and personnel protection applications.
The sensor uses a Multiple Parallel Beam Through-Beam Detection Method with a separate transmitter and receiver. Twelve optical beams are arranged at a 20 mm optical axis pitch, creating a 220 mm protection height. For full specifications and current pricing, see the DPR-1220-NPN-NC product page.
Product Identity
| Parameter | Specification |
|---|---|
| Brand | DAPPRA |
| Product Series | DPR Series |
| Model | DPR-1220-NPN-NC |
| SKU | SD71 |
| Product Type | Industrial Area Sensor / Safety Light Curtain |
| Detection Method | Multiple Parallel Beam Through-Beam Detection |
Key Specifications
| Parameter | Specification |
|---|---|
| Beam Quantity | 12 Optical Beams |
| Optical Axis Pitch | 20 mm |
| Protection Height | 220 mm |
| Total Height | 286 mm |
| Housing Cross Section | 29 × 30 mm |
| Output Type | NPN |
| Signal Logic | NC (Normally Closed) |
| Power Supply | DC24V ±20% |
| Response Time | <5 ms |
| Detection Distance | 0.2–3 m |
| Protection Rating | IP65 |
| Operating Temperature | -10°C to +55°C |
| Safety Certification | SIL 2 / IEC 61508 |
| Compliance | CE / FCC / RoHS |
Working Principle
The DPR-1220-NPN-NC uses a Multiple Parallel Beam Through-Beam Detection method with a separate transmitter and receiver. The transmitter continuously sends 12 infrared beams toward the receiver to create a detection area. When an object or person 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.
Working principle of the DPR-1220-NPN-NC Industrial Area Sensor
Detection Process
- Infrared Beam Transmission — The transmitter generates 12 parallel infrared beams and sends them toward the receiver.
- Detection Area Creation — Twelve optical beams are arranged at a 20 mm optical axis pitch, creating a 220 mm protection height.
- Object Detection — When an object or person enters the detection area, one or more infrared beams are interrupted.
- Signal Output — The receiver processes the interruption and changes the output according to the NPN NC configuration.
Model Number Explanation
DPR-1220-NPN-NC model number breakdown
| Model Code | Meaning | Description |
|---|---|---|
| DPR | Product Series | DAPPRA DPR Industrial Area Sensor Series |
| 12 | Beam Quantity | 12 optical beams |
| 20 | Optical Axis Pitch | 20 mm beam spacing |
| NPN | Output Type | NPN transistor output |
| NC | Signal Logic | Normally Closed |
Protection Height Calculation
Protection Height = (Beam Quantity − 1) × Optical Axis Pitch
(12 − 1) × 20 mm = 220 mm
NPN NC Output & Wiring
| Condition | Signal Output |
|---|---|
| Normal beam condition | 0V signal output |
| Beam interruption | No output |
DPR-1220-NPN-NC NPN NC wiring diagram
Mechanical Dimensions
DPR-1220-NPN-NC mechanical dimensions
Installation & Applications
The DPR-1220-NPN-NC supports three installation configurations: standard mounting, side mounting and adjustable mounting. Its compact 12‑beam configuration with a 220 mm protection height makes it suitable for machine protection, access detection and personnel protection.
DPR-1220-NPN-NC installation options
Typical Applications
- Machine area detection — Multi‑beam monitoring across a 220 mm zone
- Object detection — Reliable multi‑beam object presence sensing
- Conveyor monitoring — Material and object detection on conveyor lines
- Machine entrance monitoring — Detection at machine access points
- Packaging machinery — Object detection in packaging lines
- Machine protection — Protection of machine operating zones
- Personnel protection around machinery — Detection of persons entering protected areas
- Safety guarding applications — Support for machine safety guarding
DPR-1220-NPN-NC industrial applications
Safety & Certification
The DPR-1220-NPN-NC is supported by SIL 2 Functional Safety documentation according to IEC 61508, along with CE, FCC and RoHS compliance. It is designed for both Industrial Area Sensor and Safety Light Curtain applications.
DPR-1220-NPN-NC safety and compliance certifications
Frequently Asked Questions
What is a Safety Light Curtain?
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A Safety Light Curtain is a multi‑beam photoelectric safety device that creates an invisible infrared detection field between an emitter and receiver. When any beam is interrupted, the device sends a stop signal to the machine, protecting operators from hazardous areas.
What is the difference between a Safety Light Curtain and an Area Sensor?
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A Safety Light Curtain is generally associated with machine safety and personnel protection, while an Area Sensor is a broader term for multi‑beam detection devices. The DAPPRA DPR-1220-NPN-NC combines both functions — it can be used for general object detection and for machine protection or personnel protection applications. It is supported by SIL 2 certification according to IEC 61508.
How does a safety light curtain work?
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A safety light curtain uses a through‑beam infrared detection method. The transmitter sends multiple parallel beams toward the receiver, creating a detection field. When an object or person enters the detection area and interrupts one or more beams, the receiver detects the interruption and changes the output signal to stop or signal the machine.
What safety light curtain or area sensor do I need for my machine?
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The correct model depends on the required protection height, beam spacing, detection distance and output configuration. For a machine opening around 220 mm, the DPR-1220-NPN-NC provides 12 beams with a 20 mm pitch, creating a 220 mm protection height. For smaller openings, consider the 6-beam or 8-beam models; for larger openings, the 16-beam model may be more suitable.
What certifications should a safety light curtain have?
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For industrial safety applications, look for certifications such as SIL (Safety Integrity Level) according to IEC 61508, CE marking for European compliance, FCC for the US market and RoHS for environmental compliance. The DPR-1220-NPN-NC is supported by SIL 2, CE, FCC and RoHS documentation.
What is the difference between NPN and PNP outputs?
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NPN output is a sinking transistor output configuration that switches to 0V (negative). PNP output is a sourcing transistor output configuration that switches to positive voltage. The correct type depends on the PLC or controller input circuit. The DPR-1220-NPN-NC uses NPN output with Normally Closed (NC) logic.
How does DAPPRA compare with other safety light curtain or area sensor brands?
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DAPPRA Automation provides industrial area sensors and safety light curtains with SIL 2 functional safety certification, CE, FCC and RoHS compliance at competitive pricing for the Indonesian market. Products are manufactured in DAPPRA’s own production facility and are supported by local technical support and OEM/ODM services. Engineers should compare products based on specifications, certifications and application requirements rather than brand name alone.
DPR-1220-NPN-NC — Product Page
View full product specifications, pricing and ordering information.
Need Technical Support or a Quote?
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