Keyence LR Series Optical & Laser Sensors Matched with KV-U7 Power Unit Optimize Automated Production Precision Industrial Automation News Report
Keyence LR Series Optical & Laser Sensors Matched with KV-U7 Power Unit Optimize Automated Production Precision
Industrial Automation News Report
Date: July 16, 2026Source: Global Automation Industry Digest
As precision manufacturing, electronics assembly, packaging and automotive production demand more stable optical detection solutions, Keyence’s mature LR-W white light color sensor lineup, long-distance LR-T TOF laser sensor series and supporting KV-U7 PLC power supply form a complete detection power system, widely adopted by system integrators and equipment manufacturers worldwide. This article breaks down the core performance and industrial application value of LR-W500, LR-W500C, LR-W70, LR-TB5000, LR-TB2000C and
1. LR-W Series White LED Color Differentiation Sensors: Detect Tiny Color & Surface Differences
The LR-W series leverages full-spectrum white light source technology, far surpassing traditional RGB color sensors in distinguishing subtle gloss, color tone and surface texture variations. Two mainstream variants cover different wiring requirements:
- LR-W500: Standard 2m cable integrated model, detection range 30–500 mm, adjustable variable light spot (Ø3.5 mm at 100 mm working distance), built-in multi-mode timer (on-delay, off-delay, one-shot), with mutual interference suppression supporting side-by-side installation of two sensorsキーエンス.
- LR-W500C: M12 4-pin connector version, identical optical performance to LR-W500, ideal for equipment requiring quick disassembly, maintenance and modular wiring on automated jigs基恩士.
- LR-W70: Compact short-range white light sensor, designed for narrow installation spaces such as electronic component sorting, label verification and small part color sorting.
The LR-W lineup eliminates detection errors caused by workpiece tilt, uneven surface reflection and light source attenuation, capable of identifying up to 15 color thresholds simultaneously, widely deployed in cosmetic packaging inspection, food label sorting and PCB surface defect screening.
2. LR-T Series TOF Long-Distance Laser Distance Sensors: Stable Detection Regardless of Target Surface
Keyence LR-T series Class 2 red laser TOF sensors detect targets by distance threshold rather than light intensity, delivering consistent reading on mirror, matte, transparent and dark workpieces without calibration adjustment:
- LR-TB2000C: M12 connector long-distance laser sensor, maximum detection distance 2000 mm, compact housing for medium-range logistics pallet counting, part position confirmation.
- LR-TB5000: 5-meter ultra-long range cable-type laser sensor, 60–5000 mm measurable range, variable laser spot up to Ø40 mm, compliant with IEC60825-1 laser safety standards. It solves detection pain points for large equipment such as automotive body positioning, warehouse AGV obstacle avoidance and heavy goods stack height monitoringKEYENCE CO....
Both LR-T models feature robust anti-interference circuits, resisting ambient sunlight and factory incandescent light interference, with fast response speed matching high-speed automated production lines.
3. KV-U7: Dedicated Stable Power Unit for KV PLC & Sensor Peripherals
To ensure continuous, ripple-free power supply for multiple LR series sensors and KV controller modules, Keyence KV-U7 AC power unit serves as the matched power core:
- Input: 100–240 VAC wide-range alternating current; Output: stable 24 VDC, rated 1.8 A output current基恩士.
- Ultra-short voltage drop recovery time within 10 ms, startup time less than 2 seconds, light 190g compact DIN rail mounting design.
- UL/CSA certified, low power consumption below 135 VA, perfectly supporting simultaneous power supply for multiple LR-W/LR-T sensors and PLC digital I/O modules, avoiding unstable sensor signals caused by power fluctuation in multi-sensor dense layout.
4. Integrated System Application Advantages
Combining LR-W color sensors, LR-T long-distance laser sensors and KV-U7 power supply forms an all-in-one detection control solution with three core strengths:
- Full-scenario coverage: Short-range color discrimination via LR-W, medium/long-distance position detection via LR-T, unified stable power output from KV-U7, covering all optical detection links of one production line.
- Modularized wiring & maintenance: Mix cable-type and M12 connector sensors freely according to machine design; DIN rail-mounted KV-U7 simplifies electrical cabinet layout.
- Cross-industry compatibility: Suitable for lithium battery manufacturing, new energy vehicle assembly, food & beverage packaging, logistics automation, consumer electronics testing and precision machining quality inspection.
Industry Outlook
Against the backdrop of intelligent manufacturing upgrading, factories are increasingly adopting multi-sensor integrated inspection stations. Keyence’s complete portfolio including LR-W500, LR-W500C, LR-W70, LR-TB5000, LR-TB2000C and KV-U7 reduces equipment manufacturers’ component matching costs, shortens machine R&D cycles and lowers post-sale failure rates. Automation equipment suppliers reported that systems equipped with this Keyence suite achieve over 99.98% stable detection rate under 24-hour non-stop operation, significantly cutting downtime caused by sensor misjudgment or power instability.
Industry analysts predict that multi-spectrum color sensing + long-distance TOF laser detection paired with dedicated industrial power supplies will become the standard configuration of mid-to-high-end automated inspection equipment in the next three years, and Keyence LR & KV-U7 series will remain mainstream reference products for system integrators globally.
