UR30-CM4DNH, LANBAO, ultrasonic sensor, Sn 200–4000 mm, cable 2 m PVC

UR30-CM4DNH – Ultrasonic distance sensor

LANBAO UR30-CM4DNH ultrasonic distance sensor for reliable detection in machines and production lines. It measures the time of flight of an ultrasonic pulse reflected from the object, so it works regardless of the colour, gloss and transparency of the material.

Key features

• Sensing distance 200–4000 mm.
• Supply 15–30 V DC.
• Connection: cable 2 m PVC.
• Degree of protection IP67 – protection against dust and temporary immersion.

Technical specifications UR30-CM4DNH

Wiring of UR30-CM4DNH by wire colours

Setting the sensing distance (Teach-in): set point A2 by connecting the white wire to the brown (plus), point A1 by connecting the white wire to the blue (minus). Place the object at the required distance, connect the wires for two to three seconds until the blue indicator starts flashing, then disconnect the white wire. Teaching is active only for the first five minutes after switching on; after that the sensor must be switched on again.

Do not set points A1 and A2 closer than 20 mm from the blind zone, otherwise measurement accuracy and stability suffer. After switching on, the sensor warms up – it reaches full accuracy after about half an hour of operation.

The colour coding complies with IEC 60947-5-2. Always compare the actual pin and wire assignment with the diagram in the sensor datasheet (Downloads tab).

Pin assignment according to the manufacturer's catalogue. Pin 2 (white) is the Teach-in wire, not an output.

Typical applications

• level measurement and monitoring of liquids and bulk solids
• detection of transparent objects to which optics do not respond
• distance measurement and position monitoring in dusty environments
• checking stack height or silo filling
• detection of shiny and dark surfaces

How to choose and what to watch out for

• Cable outlet: the cheaper variant, but replacing the sensor requires pulling the entire cable. If you need quick replacement, choose a model with a connector (suffix -E1 for M8, -E2 for M12).
• Degree of protection IP67: protection against dust and temporary immersion. Not designed for permanent immersion or high-pressure washing – this requires IP69K.

Similar models in the same series

• UR30-CM4DT-E2
• UR30-CM4DU10-E2

Frequently asked questions

What is the sensing distance of UR30-CM4DNH?

The sensing distance (Sn) is 200–4000 mm.

How is UR30-CM4DNH connected?

UR30-CM4DNH is supplied with the connection: cable 2 m PVC. The cable is part of the sensor; the other end is free for connection to a terminal block.

How is the sensing distance set on UR30-CM4DNH?

Using the Teach-in function via the white wire. Connecting the white wire to the brown sets point A2,; connecting it to the blue sets point A1. Teaching is active only for the first five minutes after switching the sensor on.

Does ultrasound detect transparent and shiny objects?

Yes. Ultrasound works with sound, not light, so transparency, colour or gloss do not matter. On the other hand, very soft and porous materials that absorb sound cause problems.

Are there other variants of UR30-CM4DNH?

In the same series we offer models with the same sensing distance and a different output type, contact function or connection method: UR30-CM4DT-E2, UR30-CM4DU10-E2.