PTQ80470

The PTQ80470 uses a laser diode that emits a pulsed point-shaped red light with a wavelength of 680 nm. The sensor’s sensing range is 3 to 132 mm, and the adjustment range is 20 to 120 mm. At the focal point, at a distance of 40 mm, the diameter of the light spot is only 0.3 mm; at the maximum adjustable sensing range of 120 mm, it is 4 mm. The sensor has short-circuit and reverse polarity protection, making it particularly robust and safe in operation. With a switching frequency of up to 1 kHz and a response time of 0.5 ms, the sensor features background suppression (electronic), the sensor is extremely fast and precise.

Advantages
- Laser diode spot, pulsed red light
- Laser safety class 1
- Teach-in function on the sensor
- Suppression of mutual interference

Retro-reflective sensor with background suppression
Reflective sensors with background suppression perform recognition to determine whether an object is within the set switching distance. Objects located outside this range are suppressed as background and do not trigger a switching signal. Unlike active retro-reflective sensors, the switching point for retro-reflective sensors with background suppression is largely independent of the object’s reflectivity. The product portfolio includes reflective sensors with background suppression that operate either according to the triangulation principle (mechanical/electronic) or the time-of-flight principle.

Triangulation (electronic)
In triangulation sensors with electronic switching point adjustment, the light reflected by the object is projected onto a receiving element within the sensor, such as a PSD (Position Sensitive Device). The position of the light spot on the receiving element is electronically evaluated and used to determine the object distance. Depending on the sensor model, the switching point can be set either via a teach-in button or via IO-Link.

Teach-In
The convenient and wear-free teach-in procedure enables flexible and precise setting of the sensors. To teach the sensors, simply touch the teach-in surface on the back of the sensors with any ferromagnetic tool. A blue LED visually indicates whether the teach-in was successful. Five minutes after the operating voltage is applied or after the last teach-in process, the teach-in locking mechanism is automatically activated.