AutomationDirect now offers Datalogic print mark contrast sensors with 6-12mm sensing distances. Designed to detect the difference in the wavelength of the reflected light between a target mark and background, the contrast sensors use RGB light emission with automatic selection, and feature teach-in sensitivity adjustment, and selectable light on/dark on outputs.
The S8 Series compact contrast sensors feature horizontal spot orientation, a 25 kHz switching frequency, NPN or PNP logic output, 12-30 VDC operating voltage, and are available with IP67-rated plastic or IP69K-rated 316L stainless steel housings. The S8-series sensors, are fitted with a 4-pin M8 quick-disconnect or have an attached 150mm cable with M12 quick-disconnect.
New TL Series contrast sensors feature vertical or horizontal spot orientation, 10-30 VDC operating voltages, aluminum housings, and NPN/PNP or PNP logic outputs. TL-series sensors are fitted with a 5-pin M12 quick-disconnect with adjustable exit angle models are available with 0-5VDC analog outputs and 15, 20, or 50 kHz switching frequencies. The TL series are IP67-rated contrast sensors.
In this how-to video, I'll give a brief overview of the TL 46 models of data logic contrast sensors that we sell here at AutomationDirect. The TL 46 models offer a unit with high speed and low jitter. The TL 46 - WJ model I am using here has a high switching frequency of 50 K Hertz and very low jitter. We cannot duplicate an application example of the jitter but can show on a diagram the TL 46 models come in vertical or horizontal spot, here's an example of a TL 46 - 2 WL with 3 push buttons and LED bar graph. As you can see the TL 46 - WL is a horizontal spot in this example I had to mount the body of the sensor 90 degrees in order to align the detection with the color wheel. This unit also has a key lock function, as you can see the unlock led is currently off meaning I'm unable to make changes to the sensor. The key lock function deactivates the push buttons avoiding any accidental changes in sensor settings. At sensor power up the push buttons are locked the white set push button must be pressed for 5 seconds until the key lock LED, which is orange, turns on. The push buttons are locked automatically if not used for 2 minutes this unit also has a switching threshold setting the setting is adjusted by pressing the plus or minus push button. At the first pressure on the plus or minus push buttons the first 3 LEDs of the bar graph turn on. Increasing or decreasing the threshold the right or left LEDs blink with a frequency proportional to the difference from the initial threshold value. To save the new threshold value press the white set button or wait 30 seconds from the last change. Another nice feature of the TL 46 models is that that sensor cable connector can be oriented at five different positions making mounting in tight spaces simpler and relieving cable strain and stress. I hope you found this video useful and follow us to our other how-to-videos on the data logic contrast sensors. Thanks and have a great day!