 Motion Control applications involve controlling speed, position and tension of manufactured materials or other objects. These applications are common in the converting, pulp and paper, printing, rubber, metal and textile industries. The object being sensed and controlled is usually a web or tube material being manufactured, wound/unwound, processed, positioned or stacked. Senix® sensors measure the distance or size of the object or material and provide that information to the controlling motor drives, PLC's, pneumatic valves, computers, displays, contactors or other user equipment. Sensors can control the processing of almost any hard, woven or non-woven material including cable, rubber, film, foil, cloth, wire, metal, paper, etc. |
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 Roll Diameter |
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The sensor can
provide an output proportional to the diameter of a roll of material as it
winds or unwinds on a machine. Senix® sensors can accommodate multiple
rolls on a turret with sensors operating in close proximity, and have
other operating characteristics useful in roll diameter applications.
Diameter measurements are used for the following:
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Loop Control |
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A sensor can look down and measure the vertical position of a free loop of material (web, tube or cable) as it is being moved from one machine or process to another, synchronizing the speed of the material flow between both machines. The usual goal of this application is to maintain the material loop in a fixed mid-range position so that it does not break (high loop) or become damaged (low loop). The sensor's analog output is generally used to vary the speed of either the feed or takeup machinery in order to maintain a constant loop position with the material in motion. In slower or indexed applications the sensor measures the loop until it reaches a set low or high position then initiates a relay control to move or index the material to reverse the loop direction. | ||||||||
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Web Break |
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If the web material moving through a press or other web processing machine breaks, Senix® Ultrasonic Sensors can detect the break and initiate shut-down. This can range from simple proximity detection (absence/presence) to more advanced use of configurable sensor parameters to define the range of distance within which the web must fall. | ||||||||
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Position Feedback |
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A Senix® Ultrasonic Sensor measures the distance to a remote object. An obvious use for the sensor is therefore to control the positioning of that object based on the sensor's measurement. The measured object can be in open space, or constrained within a channel or tube. Position feedback is available in a variety of analog and digital forms compatible with almost any type of equipment or control. | ||||||||
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