FAQ
What Are the Different Types of Electronic Safety or Presence Sensing Devices Used for Machine Safeguarding?
Electronic safety and presence sensing devices are essential components in modern machine safeguarding systems. These devices detect the presence of personnel near hazardous areas and trigger protective responses to prevent injury. Common types include:
-
Safety Light Curtains
Use infrared beams to create a protective field; if interrupted, they stop the machine instantly. Ideal for presses, robotic cells, and assembly lines. -
Safety Laser Scanners
Offer 2D area monitoring with customizable warning and safety zones, often used in AGVs and around robotic workspaces. -
Pressure-Sensitive Safety Mats
Detect the weight of a person stepping into a hazardous area. Used near CNCs, presses, and other stationary machines. -
Safety Edge and Bumper Switches
Installed on moving parts like machine doors or AGVs, these sensors detect physical contact and initiate a shutdown. -
RFID Safety Interlocks
Provide coded, non-contact detection of guard door positions, enhancing tamper resistance and traceability. -
Vision-Based Safety Systems
Advanced camera systems that use AI or 3D sensing to monitor operator presence and prevent unsafe operations. -
Ultrasonic and Capacitive Sensors
Detect motion or body proximity without requiring direct contact—used where dust or visibility may affect optical devices.
These technologies not only protect workers but also reduce downtime and support compliance with ANSI B11.19, ISO 13849, and OSHA 1910 Subpart O standards.