Diffuse Reflective Sensor with 700mm Sensing Distance
This instruction manual provides essential information for the safe and effective use of the AUTONICS BX700-DDT Photoelectric Sensor. Please read this manual thoroughly before installation and operation to ensure proper functionality and to prevent potential hazards. Keep this manual in a safe place for future reference.
Observe all safety warnings and instructions to prevent electric shock, fire, or product damage.
The AUTONICS BX700-DDT is a diffuse reflective photoelectric sensor designed for reliable object detection. It operates by emitting light and detecting the reflected light from the target object. This model features a 700mm sensing distance and offers both NPN and PNP output types with selectable Light ON/Dark ON operation.

Figure 1: Front and side view of two AUTONICS BX700-DDT sensors. These sensors are compact, black, and feature connection terminals on one side.

Figure 2: Detailed view of the AUTONICS BX700-DDT sensor's label, indicating the model number, output specifications (NPN/PNP), and power input (12-24VDC). It also shows the 'OUT' and 'STAB' indicators and adjustment buttons.
| Model | BX700-DDT |
| Sensing Method | Diffuse Reflective |
| Sensing Distance | 700 mm |
| Power Supply | 12-24 VDC |
| Output Type | NPN & PNP Open Collector |
| Operation Mode | Light ON / Dark ON (Selectable) |
| Manufacturer | AUTONICS |
Mount the sensor securely using appropriate brackets and fasteners. Ensure the sensing surface is clear of obstructions and positioned correctly relative to the target object. Avoid mounting the sensor where it may be exposed to excessive vibration or impact.
Proper wiring is crucial for the sensor's functionality and safety. Refer to the wiring diagram typically found on the product label or in the full technical datasheet. The BX700-DDT supports both NPN and PNP output configurations.
Important: Ensure correct polarity and voltage. Incorrect wiring can damage the sensor or connected equipment. Always disconnect power before making or changing wiring connections.
After completing installation and wiring, apply power to the sensor. The power indicator (if present) should illuminate.
The BX700-DDT allows selection between Light ON and Dark ON operation modes. This selection is typically made via a switch or button on the sensor body. Refer to Figure 2 for potential switch locations.
For diffuse reflective sensors, sensitivity adjustment may be necessary to optimize detection for specific target objects and distances. This is often done via a potentiometer or push-button on the sensor. Adjust the sensitivity while observing the output indicator (OUT) to ensure reliable detection of the target and non-detection of background objects.
Regular maintenance ensures consistent performance and extends the lifespan of your sensor.
| Problem | Possible Cause | Solution |
|---|---|---|
| Sensor not powering on | No power supply, incorrect wiring, faulty power supply. | Check power connections and voltage. Verify power supply functionality. |
| No detection / Unreliable detection | Incorrect sensing distance, dirty lens, ambient light interference, incorrect sensitivity setting, target material/color. | Adjust sensing distance. Clean lens. Reduce ambient light. Adjust sensitivity. Consider target properties. |
| Constant ON/OFF output | Incorrect Light ON/Dark ON setting, background interference, sensor misalignment. | Verify Light ON/Dark ON mode. Remove background interference. Realign sensor. |
This AUTONICS BX700-DDT sensor comes with a 1-year warranty from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims.
For technical support, service, or warranty inquiries, please contact your authorized AUTONICS distributor or the seller. Do not attempt to repair the unit yourself, as this may void the warranty.
![]() |
Autonics BJ Series Rectangular Photoelectric Sensors Instruction Manual Comprehensive instruction manual for Autonics BJ Series rectangular photoelectric sensors (Cable Type and Connector Type), covering safety, installation, operation, specifications, and ordering information for various sensing types including Through-beam, Retroreflective, Diffuse, BGS, and Narrow beam. |
![]() |
Autonics BMS Series Side Sensing Photoelectric Sensors Instruction Manual Instruction manual for Autonics BMS Series side sensing photoelectric sensors. Covers specifications, safety, installation, and operation for models like BMS5M-TDT, BMS2M-MDT, and BMS300-DDT. |
![]() |
Autonics BRQ Series Cylindrical Photoelectric Sensors Product Manual Comprehensive product manual for Autonics BRQ Series cylindrical photoelectric sensors, covering safety considerations, features, ordering information, installation, operation, specifications, and performance data. Includes detailed explanations of sensing areas, angles, and operational characteristics. |
![]() |
Autonics FX/FXH/FXL 시리즈 디지털 카운터/타이머 사양 Autonics FX, FXH, FXL 시리즈 디지털 카운터 및 타이머에 대한 상세 사양, 기능 및 배선도를 제공합니다. 입력/출력 모드, 작동 속도 및 설치를 다룹니다. |
![]() |
Autonics TC Series Touch Switch Type Temperature Controllers Datasheet Comprehensive datasheet for Autonics TC Series Touch Switch Type Temperature Controllers, detailing features, specifications, ordering information, dimensions, connection diagrams, functions, and error handling. |
![]() |
Autonics BS5 Series Groove-Depth 9 mm Photomicro Sensors Instruction Manual Instruction manual for the Autonics BS5 Series groove-depth 9 mm photomicro sensors, covering ordering information, connections, specifications, circuit diagrams, operation timing, safety considerations, and installation cautions. |