Wenglor OKII403C0103 Photoelectric Sensor User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation, installation, and maintenance of the Wenglor OKII403C0103 Photoelectric Sensor. Please read this manual thoroughly before using the device.

2. Safety Instructions

Adherence to these safety instructions is crucial for preventing personal injury and damage to the sensor or other equipment.

Ensure power is disconnected before installation, wiring, or maintenance.
Only qualified personnel should perform installation and wiring.
Do not exceed the specified voltage and current ratings.
Protect the sensor from mechanical shock and excessive vibration.
Operate within the specified environmental conditions (temperature, humidity, IP rating).

3. Product Description and Features

The Wenglor OKII403C0103 is a robust photoelectric retro-reflective sensor designed for reliable object detection in industrial environments. It features an angled head for flexible mounting and a 4-meter detection range.

Wenglor OKII403C0103 Photoelectric Sensor with M12 connector

Figure 3.1: The Wenglor OKII403C0103 Photoelectric Sensor. This image shows the metallic cylindrical body of the sensor, an angled head with a sensing window, and an M12 connector at the base for electrical connection. Product specifications are visible on the side of the sensor body.

Key Features:

Type: Photoelectric Retro-Reflective Sensor
Head Type: Angled Head
Detection Range: Up to 4 meters (with suitable reflector)
Output: PNP (Push-Pull) with Light-On (LO) and Dark-On (DO) functionality
Connection: M12 Connector
Protection Rating: IP68/IP69K (High protection against dust and water ingress, including high-pressure/steam jet cleaning)

4. Setup and Installation

Proper installation is critical for optimal performance and longevity of the sensor.

4.1 Mounting

Mount the sensor securely using appropriate brackets and fasteners.
Ensure the sensing window is clear of obstructions.
Position the sensor and reflector (not included) such that the light beam is not interrupted by ambient light sources or reflective surfaces other than the target reflector.
The angled head allows for flexible mounting in confined spaces or for specific beam alignment requirements.

4.2 Wiring

The sensor uses an M12 connector. Refer to the pinout diagram below for correct wiring.

Table 4.1: M12 Connector Pinout
Pin	Color (Standard)	Description
1	Brown	+V (Operating Voltage)
3	Blue	0V (Ground)
4	Black	Output (PNP LO/DO)
2	White	Not Connected / Function Input (Check specific model documentation if applicable)

Connect the sensor to a stable DC power supply within the specified voltage range. Ensure correct polarity.

5. Operating Instructions

The OKII403C0103 sensor operates by detecting the presence or absence of an object interrupting the light beam between the sensor and a retro-reflector.

5.1 Functionality

Retro-Reflective Principle: The sensor emits a light beam that is reflected back by a special reflector. An object passing between the sensor and the reflector interrupts this beam, triggering the output.
PNP Output: The output switches to a positive voltage (+V) when activated.
Light-On (LO): The output is active when light is received (no object detected).
Dark-On (DO): The output is active when no light is received (object detected).

5.2 Adjustment (if applicable)

Some models may feature a sensitivity adjustment potentiometer. If present, rotate the potentiometer to fine-tune the detection sensitivity for your specific application and reflector distance. Observe the status indicator LED (if present) to confirm proper alignment and detection.

6. Maintenance

The Wenglor OKII403C0103 sensor is designed for minimal maintenance. Regular checks can ensure continued reliable operation.

Cleaning: Periodically clean the sensing window and reflector with a soft, damp cloth. Avoid abrasive cleaners or solvents.
Inspection: Regularly inspect the sensor, cable, and connector for any signs of damage, wear, or loose connections.
Environmental Protection: Ensure the sensor remains within its specified operating temperature and humidity ranges. The IP68/IP69K rating provides excellent protection against water and dust, but avoid prolonged submersion or direct high-pressure spray if not necessary.

7. Troubleshooting

This section provides solutions to common issues. If the problem persists, contact Wenglor technical support.

Table 7.1: Troubleshooting Guide
Problem	Possible Cause	Solution
Sensor not detecting objects	No power Incorrect wiring Misalignment of sensor/reflector Dirty sensing window/reflector Object too small or outside range Reflector not suitable or damaged	Check power supply and connections. Verify wiring against pinout diagram. Re-align sensor and reflector. Clean sensing window and reflector. Ensure object is within detection range and size. Replace reflector if damaged or use appropriate type.
Sensor output always ON/OFF	Incorrect output configuration (LO/DO) External light interference Reflective surfaces in background Sensor damaged	Verify desired LO/DO behavior. Shield sensor from strong ambient light. Reposition sensor or use background suppression if available. Replace sensor if damaged.

8. Specifications

Detailed technical specifications for the Wenglor OKII403C0103 Photoelectric Sensor.

Model: OKII403C0103
Sensor Type: Photoelectric Retro-Reflective
Head Type: Angled
Detection Range: 4 meters (13.1 feet)
Output Type: PNP (Push-Pull)
Output Function: Light-On (LO) / Dark-On (DO)
Connection: M12 Connector
Protection Rating: IP68 / IP69K
Dimensions: Refer to manufacturer's datasheet for detailed dimensions.
Manufacturer: Wenglor

9. Warranty and Support

Wenglor products are manufactured to high quality standards. For specific warranty terms and conditions, please refer to the official Wenglor website or contact your authorized distributor.

For technical support, product inquiries, or service, please contact Wenglor customer service or your local Wenglor representative. Contact information can typically be found on the official Wenglor website: www.wenglor.com

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