Microsonic® Thru-Beam Web Sensing System Model SS100 Series - Schneider Electric Sensor Competency Center - #1

Text version of the page

MICROSONIC® THRU-BEAM SENSORS Model SS100 5-43 Microsonic® Thru-Beam Web Sensing System Web inspecting applications • Eliminates damage to embossing rolls • Monitors the entire width of the embossed web as it leaves the embossing rolls • Alarm signal can alert operator, automatically shear the paper ahead of the embossing roll, or automatically stop the machine • Uses up to three pairs (transmitter/receiver) of MICROSONIC® ultrasonic thru-beam sensors This innovative sensing solution is applicable to industries that convert plies of materials into embossed napkins, paper towels, plastic-lined paper table cloths, and other consumer products. The Model SS100 Web Sensing System uses MICROSONIC®, thru-beam sensors to eliminate the costly problem of broken plies wrapping around, heating up, and damaging embossing rolls, as well as the resulting downtime required to make necessary repairs. They also eliminate false trips or no trips at all resulting from dusty environments, or problems associated with sensors not immune to changing colors and materials. What does the SS100 Web Sensing System do? Equipped with up to three pairs (transmitter and receiver) of MICROSONIC®, thru-beam sensors, the SS100 system monitors the entire width of the embossed web as it leaves the embossing rolls. Machine speeds in excess of 26 feet per second as well as dust, different colors and textures have no effect on the sensing capability of these sensors. During operation, when one of the sensors detects a tear in the web, a missing ply or even a hole in the web of predetermined size, the SS100 system immediately outputs an alarm signal. The signal can be used to alert an operator, automatically shear the paper ahead of the embossing rolls, or automatically stop the machine. As a result, the embossing rolls are saved from severe damage and time-consuming repairs. After the web is rethreaded, the embossing part of the operation can resume. Using the amount of sound energy transmitted through the plies of material to calibrate the system and detect the breaks, the SS100 system operates on a supply voltage of 85 to 270 VAC (50/60 Hz). The supply current ranges from 10 to 40 (typical) mA. Three push-buttons are provided to calibrate the detector, set and reset the indications of a ply break, and view and sometimes change the various settings. A digital display provides various information on each of the sensor pair channels and a numeric display shows, sequentially, the signal strength