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The E3Z-LT/LR/LL series represents a highly compact and reliable range of laser photoelectric sensors, designed for diverse industrial applications. These sensors integrate a built-in amplifier, offering a streamlined solution for detection tasks.
The E3Z-LT/LR/LL sensors utilize a Class 1 (JIS/IEC) laser as their light source, ensuring safe and reliable operation. This laser technology enables excellent detection performance over long distances and with low hysteresis, making them suitable for demanding environments. The series includes Through-beam, Retro-reflective with MSR function, and Distance-settable (BGS) models, each tailored for specific detection requirements.
A key feature of these sensors is their original modular structure, which allows for optical customization. This means that spot diameters can be adjusted to fit the application. For instance, a wider spot can simplify optical axis adjustment for through-beam models used at far ranges, while a minimized spot at close range allows for the detection of minute objects. This flexibility enhances product value by optimizing performance for various tasks.
The advanced optical technology of the E3Z laser ensures high-precision alignment. This is achieved through the modularization of the LD (semiconductor laser) and emitter lens. The lens position can be adjusted inline, allowing for precise control over the laser beam's directional deviation, minimizing it to within ±1 degree. This precision contributes to stable detection and ease of setup.
The sensors are equipped with both NPN and PNP output types, offering compatibility with a wide range of control systems. They also feature output mode switching, allowing users to select between light-ON and dark-ON operations as needed. Protection circuits are integrated to safeguard against reversed power supply polarity and output short-circuits, enhancing the durability and reliability of the device.
The E3Z-LT/LR/LL series is designed for ease of use and adaptability in various applications. The ability to customize spot diameters simplifies optical axis adjustment, particularly for through-beam models where a wider spot can make alignment less challenging. This is beneficial in scenarios where precise alignment might otherwise be time-consuming or difficult.
For distance-settable models, the sensing distance can be adjusted to suit the specific detection range required. This is particularly useful for applications involving objects of varying sizes or at different distances. The sensors offer a low black/white error, making them suitable for applications with mixed colors, where consistent detection across different material reflectivities is crucial.
The series includes models with pre-wired cables and M8/M12 connector types, providing flexible connection options to integrate with existing systems. Mounting brackets are available to facilitate easy installation, including options for horizontal mounting, protective covers, and sensor adjusters for precise positioning. These accessories help in securely mounting the sensors to conveyor rails or other industrial structures, and in fine-tuning their position for optimal performance.
The sensors incorporate operation and stability indicators, providing visual feedback on their status and detection reliability. The operation indicator (orange) illuminates when an object is detected, while the stability indicator (green) confirms stable detection conditions. This immediate feedback assists in setup and troubleshooting.
When mounting distance-settable models, it is recommended to ensure the sensing side is parallel with the surface of the sensing objects. However, for glossy surfaces, inclining the sensor by 5° to 10° can prevent interference from background objects and improve detection stability. If mirror-like objects are present below the sensor, inclining or separating the sensor is advised to ensure stable operation.
For applications where mutual interference from adjacent sensors might be an issue, various countermeasures can be employed. These include using sensors with interference prevention functions, installing inference prevention filters, or separating sensors by a sufficient distance. Alternating emitters and receivers in a zigzag fashion can also mitigate interference in close-mounting scenarios.
The E3Z-LT/LR/LL sensors are built with durability in mind, inheriting the excellent quality of the E3Z series, including a maximum ambient operating temperature of 55°C and an IP67 degree of protection. This robust construction ensures reliable performance even in harsh industrial environments, reducing the need for frequent maintenance.
For cleaning, it is recommended to gently wipe the lens and case with a soft, dry cloth. Users should avoid using paint thinners or other organic solvents, as these can damage the plastic components of the sensor. Regular cleaning helps maintain optimal optical performance and prevents dust or debris from affecting detection accuracy.
The modular design of the sensor, while primarily for customization, also contributes to ease of maintenance. Should a component require attention, the modular structure can potentially simplify access or replacement, though users are advised not to disassemble or repair the sensor themselves. In case of a failure, turning off the power supply immediately is recommended.
The inclusion of stability indicators is a valuable maintenance feature, as it provides continuous feedback on the reliability of detection. If the stability indicator is not lit, it suggests that the detection status is unstable, prompting users to check the sensor's alignment, sensing object, or environmental conditions. This proactive feedback helps in identifying and addressing potential issues before they lead to operational disruptions.
The product is designed to comply with RoHS directives, reflecting a commitment to environmentally responsible manufacturing and material use. This aligns with broader industry standards for sustainable practices.
General| Model | E3Z-LT |
|---|---|
| Response Time | 1 ms max. |
| Ambient Temperature | -25 to 55°C |
| Degree of Protection | IP67 |
| Current Consumption | 30 mA max. |
| Connection | Pre-wired cable (2 m) |
| Housing Material | ABS |
| Light Source | Infrared LED |
| Supply Voltage | 12 to 24 VDC |
| Output Type | NPN |
| Output Configuration | Open collector |
| Protection Circuit | Reverse polarity protection, Short-circuit protection |
