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DAPPRA DPR-1240-NPN-NC CAD Drawing & Mechanical Dimensions
DAPPRA Automation
CAD Drawing
DPR-1240-NPN-NC
Safety Light Curtain Area Sensor — Mechanical CAD Reference
DPR-1240-NPN-NC CAD Drawing
Engineering Design Reference — Mechanical Dimensions, Materials, and Mounting
⭐ Featured Product · DPR-1240-NPN-NC
12 beams · 40 mm pitch · 440 mm protection height · NPN NC · IP65 · SIL Certified
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The DAPPRA DPR-1240-NPN-NC is a light curtain sensor designed for industrial machine protection and area detection applications. In the Indonesian market, products in this category may be commonly referred to as either “Safety Light Curtain” or “Area Sensor”, depending on the application and user terminology.
1. Mechanical Drawing
The DPR-1240-NPN-NC provides the following mechanical configuration for integration into industrial equipment.
2. Dimensional Data
| Dimension Reference | Value (mm) | Tolerance (±) |
|---|---|---|
| A — Protection Height | 440 | 0.5 |
| B — Total Height (including end caps) | 526 | 0.5 |
| C — Optical Axis Pitch | 40 | 0.1 |
| D — Width (Cross Section) | 29 | 0.2 |
| E — Depth (Cross Section) | 30 | 0.2 |
| F — Beam Diameter (optical) | 8 | 0.5 |
| G — End Cap Height (each) | 20 | 0.3 |
| H — Mounting Hole Spacing | 500 | 0.5 |
General Tolerances: Linear dimensions: ±0.5 mm (up to 500 mm) | ±1.0 mm (over 500 mm)
Angular dimensions: ±0.5° | Surface finish: Ra ≤ 3.2 μm
Angular dimensions: ±0.5° | Surface finish: Ra ≤ 3.2 μm
3. Material & Finishing Specifications
| Component | Material | Surface Treatment |
|---|---|---|
| Sensor Housing (Emitter / Receiver) | Aluminum Alloy 6061 | Anodized (Black) |
| End Caps | ABS Plastic | Molded (Black) |
| Optical Window | PMMA (Acrylic) | Anti-reflective coating |
| Mounting Brackets (optional) | Stainless Steel SUS304 | Passivation |
| Connector | M12 Metal | Nickel-plated |
4. Mounting Bracket Dimensions (Optional)
The DPR-1240-NPN-NC supports mounting with standard brackets. The following dimensions are provided for reference when designing custom mounting solutions.
Mounting Hole Spacing:
32 mm (slotted for adjustment)
32 mm (slotted for adjustment)
Bracket Width:
50 mm
50 mm
Material:
Stainless Steel SUS304
Stainless Steel SUS304
Thickness:
3.0 mm
3.0 mm
Adjustment Range:
±15° vertical tilt
±15° vertical tilt
Compatibility:
DPR-1240-NPN-NC emitter and receiver
DPR-1240-NPN-NC emitter and receiver
5. Technical Reference
Mounting Orientation:
Vertical or horizontal mounting supported. Emitter and receiver must be parallel.
Vertical or horizontal mounting supported. Emitter and receiver must be parallel.
Alignment Requirement:
Maximum angular deviation: ±2° between emitter and receiver.
Maximum angular deviation: ±2° between emitter and receiver.
Clearance:
Minimum 50 mm clearance around housing for airflow and maintenance.
Minimum 50 mm clearance around housing for airflow and maintenance.
Weight:
Emitter: ~0.6 kg | Receiver: ~0.6 kg (approx. 1.2 kg total for pair).
Emitter: ~0.6 kg | Receiver: ~0.6 kg (approx. 1.2 kg total for pair).
* All dimensions in mm. Drawings are not to scale. Refer to the official CAD file (STEP/IGES) for exact geometry.
Frequently Asked Questions
What is the DAPPRA DPR-1240-NPN-NC?
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The DAPPRA DPR-1240-NPN-NC is a DPR Series Safety Light Curtain / Area Sensor designed for multi-beam infrared detection, machine protection and industrial automation applications. It provides 12 infrared beams, 40 mm optical axis pitch, 440 mm protection height, 526 mm total height and NPN NC output.
What is the protection height of the DPR-1240-NPN-NC?
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The protection height is 440 mm. Calculation: (12 − 1) × 40 mm = 440 mm.
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 Area Sensor is commonly used as a broader term for multi-beam area detection. For DPR-1240-NPN-NC, the product is presented as a Safety Light Curtain / Area Sensor because it provides multi-beam infrared detection and is positioned for machine protection and industrial automation applications.
What is the cross-section of the DPR-1240-NPN-NC?
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The cross-section of the DPR-1240-NPN-NC is 29 × 30 mm.
Are Safety Light Curtain and Area Sensor the same?
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Not necessarily. In the Indonesian industrial automation market, the terms “Safety Light Curtain” and “Area Sensor” are sometimes used to describe similar light-beam sensing products. However, they should not automatically be considered identical. The correct choice depends on the required safety function, resolution, application, output configuration, and applicable safety standards.
Can DPR-1240-NPN-NC be used on CNC machines?
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Yes. The DPR-1240-NPN-NC can be considered for CNC machine detection and machine protection applications where its 440 mm protection height and other specifications are suitable.
What is the total height compared with the protection height?
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DPR-1240-NPN-NC has: Protection height: 440 mm, Total height: 526 mm, Difference: 86 mm.
What certifications does the DPR-1240-NPN-NC have?
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The product documentation includes SIL Safety Certification, CE Certification, FCC Certification and RoHS Compliance.
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