1222999

What does this sensor do?

This unit is a photoelectric proximity sensor designed to detect the presence of an object without physical contact. It uses visible red PinPoint LED light and background suppression to provide stable object detection in compact industrial installations.

How does background suppression benefit this sensor?

Background suppression helps the sensor distinguish the target from surfaces behind it. This makes it useful where a conveyor, machine frame or back panel sits close to the object being detected, as the sensor can be adjusted to ignore unwanted background reflections.

What sensing range can I expect?

The sensing range starts at 4 mm and extends up to 220 mm. For the best overall performance, the recommended operating range is 40 mm to 140 mm.

Can the switching distance be adjusted?

Yes. The switching threshold for background suppression is adjustable from 15 mm to 220 mm using the BluePilot teach-turn adjustment. This allows the sensor to be set to suit the application rather than relying on a fixed distance.

What type of output does it provide?

It features one push-pull digital output, so it can be used in either PNP or NPN configurations. The switching mode is light switching, which means the output goes high when an object is present.

What supply voltage does it require?

The sensor operates on 10 V DC to 30 V DC. Typical current consumption is up to 25 mA without load at 24 V DC.

How is the sensor wired?

It uses a 3-pin M8 male connector. The standard pin assignment is pin 1 brown for L+, pin 3 blue for M, and pin 4 black for output Q.

Is this a compact sensor for tight mounting spaces?

Yes. It has a slim rectangular housing measuring 16 mm x 40.1 mm x 12.1 mm, making it well suited to installations where space is limited. The unit also weighs approximately 30 g.

What light source does it use?

This model uses a visible red PinPoint LED with a wavelength of 635 nm. The light spot is point-shaped, with a spot size of approximately 4.2 mm at a distance of 130 mm.

Can it detect very small objects?

It is capable of detecting very small targets, with a typical minimum detectable object size of 0.2 mm at 130 mm distance when detecting a highly reflective white object. Actual performance will vary depending on the target colour and surface finish.

Is it suitable for demanding industrial environments?

Yes. The sensor has IP66 and IP67 enclosure ratings and an operating temperature range of -40 °C to +60 °C, making it suitable for a wide range of industrial conditions.

What response speed does this sensor offer?

The response time is up to 500 microseconds, with repeatability of 150 microseconds and a switching frequency of 1,000 Hz. This makes the Sick 1222999 a strong choice for fast detection tasks.

Are there matching accessories for installation and connection?

Yes. Commonly paired items include wall and floor mounting brackets, a universal clamp bracket plate, and M8 3-pin connection leads or connectors. These options can help simplify installation in new or existing machinery.