Keyence LR-ZB250AN 250mm Laser Sensor

Keyence LR-ZB250AN CMOS Laser Sensor for Distance and Contrast Detection

The Keyence LR-ZB250AN is a self-contained CMOS laser photoelectric sensor from the LR-Z series. It uses U.C.D. (distance/contrast detection) technology, so it handles both presence checks and difference detection. Because the housing is rectangular, mounting into tight machine frames stays simple. Meanwhile, the 2 m cable removes the need for a separate connector. This combination suits automotive, food, and packaging equipment.

Technical Specifications of the LR-ZB250AN

The LR-ZB250AN covers a detecting distance of 35 to 250 mm. Its standard detectable deviation changes with range, which engineers should note during setup. Specifically, the deviation is 9 mm from 35 to 180 mm and 25 mm from 180 to 250 mm. The display resolution spans 1 to 3 (1 to 3 mm), so fine tuning stays simple. Furthermore, the spot diameter is approximately 2.4 x 1.2 mm at 250 mm, which supports small target detection.

A red laser at 660 nm provides the light source. The laser class is Class 1 under IEC60825-1 and FDA CDRH Part1040.10. Additionally, the response time is selectable at 1.5 ms, 10 ms, or 50 ms. The timer offers OFF, ON-delay, OFF-delay, and one-shot modes. For communication, IO-Link v1.1 at COM2 (38.4 kbps) is available on CB/C3P connector-type models. However, no built-in ports or expansion ports exist beyond that.

Electrical and Output Details

The supply voltage ranges from 10 to 30 VDC with 10% ripple (P-P), Class 2 or LPS. Power consumption stays at 450 mW or less, which equals 18 mA or less at 24 V and 34 mA or less at 12 V. The output type is NPN open collector. It handles an applied voltage of 30 VDC or less and a control current of 100 mA or less. Besides, residual voltage stays at 1.2 V or less at 10 mA or less. Output operation supports Light-ON and Dark-ON selection.

Mechanical and Environmental Parameters

The LR-ZB250AN weighs approximately 110 g including cable. Its protection rating reaches IP68 under IEC60529 and IP69K under DIN40050-9. Moreover, it meets NEMA 4X, 6P, and 13 standards. Therefore, high-pressure washdown and dust exposure cause no damage. Operating temperature ranges from -10 to +50 °C with no freezing. Storage temperature spans -25 to +75 °C, also with no freezing. In addition, relative humidity must remain between 35 and 85 % RH with no condensation.

Installation Guide for the LR-ZB250AN

First, mount the rectangular body into a rigid bracket at the target distance. Next, wire the 2 m cable to the supply and output circuit. Then, select the response time that matches your line speed. After that, choose Light-ON or Dark-ON logic for your controller. Finally, teach the reference distance or contrast value using the display and buttons. Keep the laser beam away from reflective surfaces, because stray light can shift readings. Additionally, confirm the supply uses a Class 2 or LPS source within 10 to 30 VDC.

Packaging List

• 1 × Keyence LR-ZB250AN laser sensor

• 1 × Mounting bracket set

• 1 × Quick start sheet

Shipping

Orders ship by Fedex, UPS, or DHL. Tracking numbers go out after dispatch. Packing uses anti-static bags and foam for safe transit.

FAQ

Q1: What is the detecting distance of the Keyence LR-ZB250AN?
A: It covers 35 to 250 mm, with deviation values that change across two range zones.

Q2: Which laser class does the LR-ZB250AN use?
A: It uses a red laser at 660 nm, classified as Class 1 under IEC60825-1.

Q3: Does the LR-ZB250AN offer IO-Link?
A: Yes, IO-Link v1.1 at COM2 (38.4 kbps) is available on CB/C3P connector-type models.

Q4: What protection rating does this sensor carry?
A: It carries IP68, IP69K, and NEMA 4X / 6P / 13 ratings for harsh environments.

Q5: What output type does the LR-ZB250AN provide?
A: It provides an NPN open collector output with Light-ON and Dark-ON selection.