DPR-1240-PNP-NC

Industrial Area Sensor — Installation Diagram

Version 1.0 SKU: SW97 PNP NC

1. Installation Overview

The DPR-1240-PNP-NC supports three installation methods. Select the appropriate method for your application.

DPR-1240-PNP-NC Installation Methods Overview

DPR-1240-PNP-NC — Three Installation Methods

⬆️⬇️

Top/Bottom Bracket

Fixed with L-shaped brackets at the top and bottom, suitable for most standard applications.

↔️

Side Mounting Bracket

Installed on the side using L-shaped brackets, ideal for space-constrained installation environments.

🔧

Adjustable Bracket System

Allows height and angle adjustment, suitable for complex installation scenarios.

Note: Ensure that the emitter and receiver are aligned properly and the optical axis is not blocked during installation.

⚠ Important: Recommended tightening torque for bracket mounting screws: 2.0 N·m. Do not overtighten as this may damage the housing or brackets.

2. Step-by-Step Installation Guide

Step 1 — Determine Mounting Location

Identify the mounting location based on the machine structure and protection requirements.
Ensure sufficient clearance for the emitter and receiver (minimum 0.2 m, maximum 3 m apart).
Allow access for cable connection and maintenance.

Step 2 — Select Installation Method

Top/Bottom Mounting: Use L-shaped brackets at the top and bottom of the detection area. Suitable for most standard applications.
Side Mounting: Install brackets on the side of the machine frame. Ideal for compact equipment and restricted spaces.
Adjustable Bracket: Use adjustable brackets for multi-directional positioning and alignment.

Step 3 — Mount Emitter and Receiver

Secure the emitter to the bracket on one side of the detection area.
Secure the receiver to the bracket on the opposite side.
Ensure the emitter and receiver face each other directly and are vertically aligned.
Both units must be at the same height and parallel to each other.

💡 Tip: Use a spirit level to ensure the brackets are perfectly vertical. Misalignment will affect detection reliability.

Step 4 — Optical Alignment

Verify that the emitter and receiver are aligned within ±2° of each other.
Check that all 12 beams are properly aligned across the detection area.
Remove any obstructions from the detection zone.
Use the LED indicators on the receiver to confirm beam alignment.

⚠ Important: Misalignment of the emitter and receiver will reduce detection distance and may cause false outputs. Align the units carefully before final tightening.

Step 5 — Tighten All Screws

Secure all mounting hardware to the specified torque: 2.0 N·m.
Do not overtighten, as this may damage the housing or brackets.
Re-check alignment after tightening.

3. Wiring Connection

The DPR-1240-PNP-NC uses M12 4-pin connectors for both emitter and receiver. Use the supplied cables for connection.

DPR-1240-PNP-NC — Wiring Diagram

Wire Color	Pin	Function	Connection
Brown	1	Power Supply	DC24V+ (20.4–28.8V)
Blue	3	Ground	0V
Black	4	PNP Output	Signal Output (NC)
White	2	Test Input	Optional test function

Note: For detailed electrical specifications, refer to the DPR-1240-PNP-NC Datasheet. For mechanical dimensions, refer to the CAD Drawing.

Available Resources: Datasheet PDF / CAD Drawing / Wiring Diagram / Installation Manual — Available from DAPPRA.

4. Post-Installation Checklist

✅	Check Item
☐	Emitter and receiver are securely mounted
☐	Emitter and receiver are vertically aligned and parallel
☐	All 12 beams are detected correctly
☐	Cables are properly connected and secured
☐	Power supply voltage is correct (DC24V ±20%)
☐	Beam interruption detected correctly across all zones
☐	Output signal responds correctly to beam interruption
☐	All screws are tightened to 2.0 N·m