Question

directions: read each danger scenario. decide which safety device would best prevent injury. choose from: gate with switch, light curtain, ir sensor, safety mat. then, explain why you chose that device. scenarios 1. a worker opens the access door to the robot cell while the robot is moving. best device: ______ why: ____ 2. a worker reaches into the robot’s path to adjust a part while the robot is cycling. best device: ____ why: ____ 3. someone walks across the open side of the robot cell without noticing the robot is in motion. best device: ____ why: ____ 4. a worker steps onto the floor area right next to the robot arm while it is operating. best device: ____ why: ______

Explanation:

1. Best device: Gate with Switch. Why: When the worker opens the access - door, the switch on the gate can detect the door opening and stop the robot's motion to prevent injury.
2. Best device: Light Curtain. Why: A light curtain can detect when a worker reaches into the robot's path and immediately stop the robot's cycling to avoid injury.
3. Best device: IR Sensor. Why: An IR sensor can detect the presence of a person walking across the open side of the robot cell and trigger a safety response to stop the robot.
4. Best device: Safety Mat. Why: When a worker steps onto the floor area next to the operating robot arm, the safety mat can detect the weight and stop the robot to prevent injury.

Answer:

1. Best device: Gate with Switch. Why: Detects door opening, stops robot.
2. Best device: Light Curtain. Why: Detects intrusion into robot path, stops robot.
3. Best device: IR Sensor. Why: Detects person near robot, triggers stop.
4. Best device: Safety Mat. Why: Detects weight, stops robot.