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Brand: Keyence
Keyence LR-ZB250AN Laser Sensor, 250 mm, Cable, NPN
Description
LR-ZB250AN: what this LR-Z series sensor is and how its code reads
LR-ZB250AN is a Keyence LR-Z series product, listed by the maker as: Rectangular w/ cable Type, 250 mm. The LR-Z series is a rectangular, stainless steel CMOS laser sensor family. Models are sold as distance-based (ZB) or U.C.D. (ZH) versions, with different detectable ranges, spot sizes and output types in the same compact body. Seven Star LLC supplies LR-ZB250AN in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer.
ZB is the standard body, 250 the range class, the A is part of the Keyence model code for this range (the table gives the spot size and range), and N the NPN output with a cable.
LR-ZB250AN provides 35 to 250 mm range in the mid class. It is a distance-based Class 1 laser sensor, with a standard detectable deviation of 9 mm from 35 to 180 mm and 25 mm from 180 to 250 mm. It balances reach and precision for general conveyor work.
LR-ZB250AN technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Keyence / LR-ZB250AN |
| Product description | Rectangular w/ cable Type, 250 mm |
| Type | Distance based laser sensor |
| Appearance | Rectangular |
| Output | NPN |
| Cable connection | 2 m cable |
| Detectable distance | 35 to 250 mm (215 to 0) |
| Standard detectable deviation | 35 to 180 mm : 9 mm 180 to 250 mm : 25 mm |
| Display resolution | 1 to 3 (1 to 3 mm ) |
| Spot size | Approx. 2.4 × 1.2 mm at 250 mm |
| Response time | 1.5 ms / 10 ms / 50 ms selectable |
| Light source | Type: Red laser (660 nm) |
| Laser class | Class 1 laser product (IEC60825-1, FDA (CDRH) Part1040.10 ) |
| Function | Indicator: 3-digit 7-segment display (red), output indicator (yellow), DATUM indicator (orange), 1 spot indicator (green) |
| Timer | OFF/ON delay/OFF delay/One-shot |
| Specifications | Power voltage: 10 to 30 VDC, including 10% ripple (P-P), Class 2 or LPS |
| Power consumption | 450 mW or less (18 mA or less at 24 V, 34 mA or less at 12 V) |
| Control output | NPN Open collector, Applied voltage 30 VDC or less, Control current 100 mA or less, Residual voltage 1.2 V or less at 10 mA or less, 2 V or less at 10 to 100 mA |
| Protection circuit | Protection against reverse power connection, output overcurrent, output surge, reverse output connection |
| Output operation | Light-ON / Dark-ON selectable |
| External input | Input time calibration: 35 ms or more ON, 35 ms or more OFF Laser emission stop: 2 ms or more ON, 20 ms or more OFF Short-circuit current NPN: 1 mA or less/PNP: 2 mA or less |
| Environmental resistance | Enclosure rating: IP68 (IEC60529), IP69K (DIN40050-9), NEMA 4X, 6P, 13 (NEMA250), ECOLAB , Diversey |
| Insulation resistance | 20 MΩ or more (500 VDC) |
| Ambient light | Incandescent lamp: 2,000 lux or less Sunlight: 4,000 lux or less |
| Ambient temperature | -10 to +50 °C (No freezing) |
| Relative humidity | 35 to 85 % RH (No condensation) |
| Storage temperature | -25 to +75 °C (No freezing) |
| Withstand voltage | 1,000 VAC, 50/60 Hz, 1 min |
| Vibration resistance | 10 to 55 Hz, Double amplitude 1.5 mm , 2 hours in each of the X, Y, and Z directions |
| Shock resistance | 1,000 m/s² , 6 times in each of the X, Y, and Z directions |
| Material | Case: SUS316L, Display: PES, Lens cover: PMMA with scratch-resistant coating, Packing/Connector ring: FKM |
| Weight | Approx. 110 g (Including cable) |
Values in the table are taken from the maker’s model page for LR-ZB250AN. Treat them as nominal and confirm the exact conditions in the instruction manual before final design.
How the sensing principle behind LR-ZB250AN works
CMOS laser sensors measure where the reflected spot falls on an imaging line, which gives them a distance reading independent of target colour. The sensor compares that distance with a set window, and anything inside the window switches the output. This makes the series well suited to detecting objects against a background, such as parts on a conveyor belt, which a plain intensity sensor would confuse with the belt.
The Type row in the table states whether a model is the plain distance-based version or the U.C.D. function version, and the display shows live distance so teach-in and fault-finding are quicker.
Where LR-ZB250AN fits: related LR-Z series parts
LR-Z sensors replace brightness-based reflective sensors when colour sensitivity is a problem. Each range code has NPN, PNP, cable, M8 connector and C3P variants, so confirm the exact suffix against the control system before ordering.
The LR-Z series range includes the following part numbers, which are listed for cross-reference: LR-ZH490CB, LR-ZB240CB, LR-ZB90CB, LR-ZH500N, LR-ZB250AN, LR-ZB100N, LR-ZH500CN, LR-ZB250CN, LR-ZB100CN, LR-ZH500P, LR-ZB250AP, LR-ZB100P, LR-ZH500CP, LR-ZB250CP, LR-ZB100CP and the C3P versions. Whether a particular combination is compatible should be confirmed from the maker’s documents. Closely related models from the same family that you may also want to compare include LR-ZH500N, LR-ZB100CP.
Selecting LR-ZB250AN: ordering checklist
- Range code (90, 100, 240, 250, 490 or 500) versus your stand-off distance.
- Distance based versus U.C.D. functionality.
- Output polarity and cable or M8 connector.
- Laser class: Class 1 or Class 2 as listed for the exact model.
- Wash-down needs, since the table lists the enclosure rating.
- Ambient-light limits at the working distance.
For LR-ZB250AN specifically, confirm the output type, the connection style and the rated distance shown in the table above against the real installation drawing before placing an order.
Installing and maintaining LR-ZB250AN
Fix the sensor on a rigid bracket aimed perpendicular to the target surface. Teach the detection window with a typical product and confirm with the live distance display. Avoid pointing the beam at highly specular surfaces at a steep angle.
Clean the lens cover with a soft cloth, check the cable and seals at each shutdown and test the output after servicing. Because the Class 2 versions emit visible laser light, follow the warning labels in the manual.
Typical applications of LR-ZB250AN in Oman and the GCC
These sensors appear on packaging, food processing, bottling and assembly lines in Oman and the GCC, and on outdoor conveyors where the stainless body tolerates washdown, dust and salt air. They detect dark or shiny products without needing reflectors.
Mid-range stand-off is typical for conveyor belts and packaging stations. Extra heat, dust and humidity are normal in the region, so check the ambient temperature and enclosure rows in the table against the real mounting location, including direct sunlight on outdoor skids.
LR-Z series models compared with LR-ZB250AN
The table lists the LR-Z series models in our current range with the maker’s own description, to help you see how LR-ZB250AN differs from its neighbours.
| Model | Maker description |
|---|---|
| LR-ZB250AN | Rectangular w/ cable Type, 250 mm |
| LR-ZH500N | Rectangular w/ cable type, 500 mm |
| LR-ZB100CP | Rectangular w/ M8 connector Type, 100 mm |
Information to send with your LR-ZB250AN RFQ
- Exact part number: LR-ZB250AN (and quantity, including any matching transmitter, receiver, reflector or head).
- Output polarity required by your PLC input card (NPN or PNP).
- Cable length or connector type and the mounting method.
- Ambient conditions: temperature, washdown, dust and direct sunlight.
- Project reference, delivery location in Oman or the GCC and required lead time.
- Any related items needed, such as brackets, cables, reflectors or a mating amplifier.
Documents and quotation
Send us the part number LR-ZB250AN and we will confirm available documents, including the maker’s datasheet and instruction manual where we can provide them. Prices are quoted per request and are not shown on this page.
Seven Star LLC is an independent supplier in Muscat serving Oman and the GCC. We are not affiliated with the manufacturer, and we quote against your RFQ with delivery and lead time confirmed in the quotation.
Other Models in the Keyence Lr Z Range
Seven Star LLC supplies models from the Keyence Lr Z range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Keyence LR-ZH500N Laser Sensor, 500 mm, Cable, NPN | Laser Distance, LiDAR & Radar Sensors | View details |
| Keyence LR-ZB100CP Laser Sensor, 100 mm, M8 Connector, PNP | Laser Distance, LiDAR & Radar Sensors | View details |
| Keyence LR-ZB250AN Laser Sensor, 250 mm, Cable, NPN | Laser Distance, LiDAR & Radar Sensors | You are viewing this model |
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About brand
Keyence is a Japanese maker of sensors, measuring instruments and machine vision, founded in 1974 by Takemitsu Takizaki and headquartered in Osaka. It sells directly to factories and makes photoelectric and laser sensors, code readers, vision systems, measurement systems and microscopes.
Seven Star LLC sources and supplies Keyence sensors and code readers for machine builders and maintenance teams in Oman and the GCC.
Keyence company profile
| Founded | 1974, Japan |
|---|---|
| Founder | Takemitsu Takizaki |
| Headquarters | Osaka, Japan |
| Sales model | Direct sales |
| Product families | LR-Z and LR-W laser and photoelectric sensors, SR-X code readers, IV and CV-X vision systems, LJ-X laser profilers |
Keyence series listed
Three series appear on this page. The LR-Z is a self-contained CMOS laser sensor. Keyence describes it as detecting by distance and by received light, with one-button teaching, a stainless steel body rated IP68/69K and a range of up to 500 mm depending on the model; the LR-ZB250CP is the listed type. The LR-W500C is a full-spectrum reflective photoelectric sensor from the LR-W series. The SR-X100 is an autofocus 2D code reader.
Keyence products we list
Ordering Keyence sensors: what we need
Keyence type codes are short but exact. Send the complete model, such as LR-ZB250CP, because the letters at the end decide the output type and the connection. Remember that many Keyence sensors need a separately ordered cable or connector, and code readers need a cable, a power supply and often a mounting bracket. List those items, the cable length, and the communication interface your PLC uses.
Facts checked against Keyence's published company profile, October 2026.
FAQ
Questions about the Keyence LR-ZB250AN Laser Sensor, 250 mm, Cable, NPN
Answers from our engineering team on installation, compatibility and integration.
01What is Keyence LR-ZB250AN?
LR-ZB250AN is a Keyence LR-Z series product described by the maker as: Rectangular w/ cable Type, 250 mm. Seven Star LLC supplies it in Oman and the GCC as an independent supplier.
02What detecting range does LR-ZB250AN have?
The datasheet lists 35 to 250 mm with a Class 1 laser product classification.
03Is LR-ZB250AN NPN or PNP?
It is an NPN open-collector output sensor rated 30 VDC or less and 100 mA or less, with a 2 m cable.
04Does Seven Star LLC supply LR-ZB250AN in Oman?
Yes, we quote LR-ZB250AN on request for Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer. Send the part number and quantity with your RFQ and we confirm availability and lead time.
05What should I check before ordering LR-ZB250AN?
Check output polarity, connection style, the rated distance or range in the specification table, the ambient temperature at the installation point and any matching accessories. Send the part number and we will confirm available documents.
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