Sensor | Diffuse Reflection Infrared | NPN/PNP 10-30VDC

This CDD-11N infrared sensor finds objects for industrial automation. It's a diffuse reflection sensor. It works by bouncing an infrared beam directly off the target. You don't need a separate reflector. It runs on 10-30VDC power. It comes in NPN/PNP output types. Features and Benefits - Diffuse reflection sensing - It finds objects directly. This makes installation easier. You don't need to mount a reflector. - NPN and PNP output options - You can wire it to match your PLC or controller. It fits different input types. - Adjustable sensitivity control - You can set the detection range precisely. This helps ignore background objects. - Infrared light source - This sensor detects consistently. Visible light in factories affects it less. Applications - Conveyor line control - Use it to count products. Confirm product presence. Trigger sorting gates on a moving line. - Part positioning - Mount it on an assembly machine. Confirm a component is in place. Then the next process can start. - Packaging machinery - It senses when a box or bottle is ready. It works for filling, sealing, or labeling. How They Work A photoelectric sensor, also known as an optical sensor or light sensor, detects the presence or absence of an object by emitting a light beam and measuring changes in the reflected or interrupted light. This particular sensor uses infrared light in a diffuse reflection mode. When an object enters the detection area, the emitted infrared light reflects off the object and is received by the sensor, triggering an output. This method allows for non-contact detection, which is ideal for many industrial and automation tasks. The sensor operates within a 10-30 VDC power range. 3 Main Types of Photoelectric Sensors Photoelectric sensors generally come in three main configurations. Through-beam sensors have a separate emitter and receiver, detecting an object when it breaks the light beam between them. Retro-reflective sensors combine the emitter and receiver in one housing and use a reflector to bounce the light back; an object is detected when it interrupts this beam. Diffuse reflection sensors, like this one, also have the emitter and receiver in one unit but detect light directly reflected off the target object itself. Common Applications Photoelectric sensors are versatile tools used in countless industrial and automation settings. Their ability to detect objects without physical contact makes them ideal for tasks such as counting items on a conveyor belt, verifying product presence, or positioning components. They are also commonly employed for safety interlocks on machinery, ensuring guards are closed before operation. The NPN and PNP output types provide compatibility with various control systems, making this sensor suitable for diverse integration needs. The Core Components At the heart of a photoelectric sensor are several key components. An emitter generates the light beam, which in this product's case is infrared. A receiver, often a phototransistor or photodiode, detects the reflected or interrupted light. The internal circuitry processes the signal from the receiver and determines if an object is present, then activates the output. This particular sensor integrates these components for diffuse reflection operation and is powered by a 10-30 VDC supply, offering either NPN or PNP output. The 3 Main Operating Modes The three primary operating modes for photoelectric sensors dictate how they detect objects. Dark-on mode means the output is activated when the received light is interrupted or reduced. Light-on mode means the output is activated when light is received. This diffuse reflection infrared sensor operates by detecting light reflected from the object itself. The NPN or PNP output type specifies how the sensor interacts electrically with the control system, offering flexibility for different setups within the 10-30 VDC operating range.