Catalogs > Safety Products Catalog > Presence Sensing Safety Devices > Safety Edges > Overview
Overview
| Introduction |  |
Operating Principle | |
Sensing Surface | |
Force Travel Relationship | |
| Risk Assessment | |
Selecting the Cushion Factor | |
Typical Applications | |
Cable Termination | |
The profile works on the principle of a two-wire design with conductive rubber. Two wires run the length of the profile. The wires are terminated with a known resistor. When the profile is deformed, the conductive rubber comes in contact with each other and causes the overall resistance to drop.
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The control unit provides a voltage source to the wires in the profile. It continuously checks the continuity of the wires for shorts, opens and changes in resistance. If the circuit opens, becomes shorted, or the resistance changes, the output of the control unit turns off.
The control unit can also be used to monitor the performance of the output switching devices.