LJ1A-220B 接近开关产品介绍（中英双语）
【中文版】
LJ1A-220B 接近开关是一款高性能非接触式检测装置，采用电磁感应原理设计，适用于工业自动化控制系统中金属物体的精确探测。产品以稳定可靠的检测性能和便捷的安装特性，广泛应用于机械制造、汽车生产线、智能仓储等领域。
本产品配备坚固的工程塑料外壳，表面经过特殊工艺处理，具备良好的抗冲击性和耐腐蚀性。紧凑的结构设计（直径18mm，长度55mm）可适应狭小空间安装需求，IP67防护等级有效抵御粉尘侵入和短时水浸影响。检测距离达2mm（铁质材料），响应时间小于1ms，能够快速识别目标物的位置变化。
LJ1A-220B 采用三线制接线方式（棕线+24V，蓝线0V，黑线信号输出），支持NPN/PNP两种输出类型可选。宽电压设计（10-30V DC）可适配多种控制系统，内置反向极性保护和短路保护功能，有效提升设备运行安全性。LED状态指示灯可实时显示工作状态，便于现场调试和维护。
产品工作温度范围覆盖-25℃至+70℃，特殊密封工艺确保在油污、振动等复杂工业环境中稳定运行。镀金触点设计有效降低接触电阻，延长电气寿命。安装方式支持齐平式或非齐平式选择，可灵活适配不同应用场景。
典型应用包括：
• 自动化生产线定位检测
• 机床刀具位置监控
• 传送带物体计数系统
• 机器人末端执行器状态确认
• 包装机械安全防护装置
【English Version】
LJ1A-220B Proximity Switch is a high-performance non-contact detection device based on electromagnetic induction principle, designed for accurate metal object detection in industrial automation systems. With reliable sensing capabilities and easy installation features, it is widely used in machinery manufacturing, automotive production lines, and intelligent warehousing applications.
Encased in a robust engineering plastic housing with special surface treatment, the device demonstrates excellent impact resistance and corrosion resistance. Its compact dimensions (18mm diameter, 55mm length) enable installation in confined spaces, while IP67 protection rating ensures reliable operation against dust ingress and temporary water immersion. Offering a 2mm detection range (for ferrous materials) and sub-1ms response time, it delivers swift recognition of target position changes.
The LJ1A-220B features three-wire connection (brown +24V, blue 0V, black signal output) with selectable NPN/PNP output configurations. Wide voltage compatibility (10-30V DC) allows integration with various control systems, while built-in reverse polarity protection and short-circuit protection enhance operational safety. The integrated LED status indicator provides real-time working status visualization for efficient field debugging and maintenance.
Operating within -25℃ to +70℃ temperature range, the device employs specialized sealing technology to ensure stable performance in challenging industrial environments containing oil contaminants and vibrations. Gold-plated contacts minimize electrical resistance and extend service life. Both flush and non-flush mounting options are available to accommodate diverse application requirements.
Typical applications include:
• Positioning detection in automated production lines
• Machine tool position monitoring
• Conveyor belt object counting systems
• Robotic end-effector status verification
• Safety protection devices for packaging machinery
This product combines precision engineering with durable construction, delivering consistent performance for industrial automation applications requiring accurate proximity sensing solutions.
