Keyence LR-X100C — CMOS Laser Displacement / Distance Sensor, 100 mm, NPN Output, 1 PC

KEYENCE · LR-X Series · Ultra-Compact CMOS Laser Sensor · 1 PC

The Keyence LR-X100C is an ultra-compact CMOS laser displacement sensor from the Keyence LR-X series with a 100 mm sensing range, a visible red semiconductor laser, and an NPN switching output (suffix C). It is part of the same multi-brand automation catalog KOEED keeps for Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa and Panasonic lines, and is typically used in semiconductor, electronics, automotive and AGV applications.

The LR-X platform pairs Keyence’s CMOS multi-pixel receiver with a visible red Class 1 / 2 laser to deliver stable displacement and thickness measurement on glossy, dark or low-reflectivity targets that defeat conventional through-beam or diffuse-reflect sensors.

1. Key Technical Specifications & Overview

The LR-X100C is the 100 mm “short range” variant of the LR-X family. The C suffix denotes an NPN open-collector switching output; PNP (suffix P) and IO-Link / 4–20 mA variants (suffix IA) are also available on the same body. The LR-X100C is sold here as a single piece (1 PC) for prototyping, cell retrofit or spot replacement.

2. Application Scenarios — Where the LR-X100C Fits

The LR-X100C is a short-range displacement / distance workhorse used wherever a Keyence laser sensor must resolve a small gap, thickness or profile on a part that ordinary photoelectric switches cannot see. Within KOEED’s wider factory-automation customer base, the LR-X100C is most often specified in the following cell types:

• Semiconductor wafer thickness & flatness — 100 mm stand-off resolves wafer edge and back-grind profile on 200 / 300 mm wafer handling robots.
• PCB and flat-panel display gap / height — detects component stand-off, panel-to-bezel gap, and lamination thickness on SMT lines feeding downstream Allen-Bradley or Mitsubishi pick-and-place cells.
• Bottle / can fill-level detection — non-contact level check on transparent PET or aluminium cans in beverage lines.
• Tire, rubber and paper caliper / thickness — on-line extrusion and calender control where reflective or low-contrast surfaces are common.
• Sheet-metal and stamped-part thickness — gap measurement after press or laser-cut stations running on Fanuc robotic cells.
• Automotive body panel gap & flush — door, hood and fender gap / flush measurement on Yaskawa / Fanuc robotic sealing lines.
• AGV and mobile-robot obstacle detection — short-range forward scan on automated guided vehicles using a visible-red laser sensor in place of an ultrasonic switch.
• Pharmaceutical blister and vial inspection — tablet height and cap-seal presence, typically paired with Keyence CV / XG vision systems.

3. Integration & Wiring Notes

The LR-X100C is designed to drop into the same 24 V DC wiring channels as the rest of the LR-X line. Power (brown), 0 V (blue), NPN output (black) and a configuration / alarm line (white) are brought out on the M8 4-pin pigtail. The C-suffix NPN output pulls to 0 V on detection, so it is wired to a sinking digital input on the host PLC.

For continuous thickness / distance reading, choose the LR-X100C IA variant (4–20 mA analog output) and scale the current to engineering units with the KOEED PLC Analog Calculator. For IO-Link master integration on a PROFINET / EtherNet/IP fieldbus, prefer the IO-Link version and wire it into a Keyence or third-party IO-Link master.

4. Installation & Commissioning Tips

• Mounting geometry. Keep the LR-X100C beam perpendicular to the target — tilt more than 5–10° will pull the receiver off the CMOS pixel and skew distance.
• Stand-off distance. 100 mm is the nominal range. Do not mount closer than the LR-X near-blind point or you will see “out-of-range” latches in the alarm output.
• Laser safety. Visible red Class 1 / 2 laser — do not stare into the beam; align the spot with a diffuser card and avoid glossy specular surfaces that retroreflect into operators.
• Glossy / dark targets. The CMOS multi-pixel receiver handles black rubber and shiny aluminium better than a regular diffuse-reflect sensor, but on mirrored surfaces, tilt 10–15° off perpendicular to avoid direct retroreflection.
• IP67 sealing. The M8 connector must be fully seated and the pigtail grommet tightened. IP67 rating is for temporary immersion, not continuous wash-down — use a field-encapsulated harness for high-pressure cleaning.
• 24 V DC supply. Use a regulated 24 V industrial PSU; voltage dips below ~20 V will trigger the LR-X brown-out alarm. For long pigtails, derate cable cross-section to keep loop drop below 1 V.
• Configuration. Teach set-point via the LR-X teach pendant, the IO-Link master, or the IO-Link version’s host PLC. Save the teach value in the PLC tag so a sensor swap can be auto-loaded.
• Spare head / spare harness. For a 24/7 cell, keep at least one LR-X100C plus a spare M8 harness on the shelf — KOEED stocks the LR-X family for fast cross-shipment. Ask Moritta@KOEED.COM for the LR-X harness part number.

5. Procurement, Warranty & Lead Time

KOEED stocks the Keyence LR-X100C as a single piece (1 PC) for engineering samples, retrofit jobs and in-place sensor replacement. For larger cells, we also keep the longer-range LR-X siblings: LR-X100C (100 mm NPN), LR-X250C (250 mm NPN) and LR-X500C (500 mm NPN), plus the PNP (P) and IO-Link / 4–20 mA (IA) variants on the same body. If you are rebuilding a complete line, send the full bill of materials across Keyence, Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa and Panasonic in a single RFQ and we will quote the lot.

Warranty. Every LR-X100C is sourced through KOEED’s qualified multi-brand channel and inspected against the manufacturer datasheet before shipment. Lead time. In-stock units ship within 1–3 business days; worldwide delivery via DHL / FedEx / UPS. Quotation. Send the part list and we will reply with availability and price within 24 hours on business days. KOEED does not publish a fixed online price for this model — final pricing is confirmed by email against quantity, variant (NPN / PNP / IO-Link) and destination.

Keyence, LR-X, LR-X100C and CMOS are referenced for product identification only. KOEED is an independent multi-brand industrial-automation distributor — not an authorised subsidiary of Keyence, Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa or Panasonic. Specifications are summarised from publicly available manufacturer documentation; confirm against the official Keyence datasheet before installing in a safety-related circuit. For current stock, datasheet and lead time, contact Moritta@KOEED.COM.