Aotoro EK51-R6M4 Photoelectric Sensor 6m Retro-reflective AC/DC 24V IP66 Rated

Light ON mode means the sensor's output switch is active (ON) when the received light intensity is above a threshold (target detected). Dark ON mode means the output is active when the light intensity is below the threshold (target absent). This selectable logic allows the sensor to interface directly with PLCs or controllers requiring either normally-open or normally-closed input behavior.

While diffuse reflective sensors are versatile, highly transparent or mirror-like shiny objects can be challenging. Transparent objects may not reflect sufficient light, and specular surfaces may reflect the beam away from the receiver. For such applications, testing is recommended, or consider a through-beam sensor setup for more reliable detection.

While not specified in the provided data, typical industrial photoelectric sensors of this type have a response time in the range of 1-10 milliseconds, allowing for switching frequencies up to several hundred Hz. For precise high-speed counting applications, please consult the official Aotoro datasheet for the exact response time specification.

The sensor typically has three or four wires: Brown (L+/+V), Blue (N-/-V), Black (Output), and sometimes White (Output complement or control). Connect Brown to the positive DC terminal or live AC terminal, and Blue to the negative DC terminal or neutral AC terminal. The load (e.g., PLC input, relay coil) is connected between the Black output wire and the positive supply, respecting the sensor's current rating.