Which factor most directly influences the decision to use a safety-rated monitored stop rather than a hard stop in a collaborative robot environment?

Which factor most directly influences the decision to use a safety-rated monitored stop rather than a hard stop in a collaborative robot environment?

• A. The color of the robot.
• B. The need to maintain restart capability under safety requirements.
• C. The minimum payload.
• D. The sensor brand.

Answer: (B)

The key idea is safety restart capability. A safety-rated monitored stop stops the robot while keeping the safety system active, so the system can be restarted in a controlled, safe way once the area is verified clear. This restartability under safety requirements is what drives choosing a monitored stop. A hard stop would typically require a more disruptive reset or power-down of safety logic, increasing downtime and complicating a safe restart. The other details—color, payload, or sensor brand—don’t influence this safety-mode decision because they don’t affect how the safety function is implemented or restarted.

The key idea is safety restart capability. A safety-rated monitored stop stops the robot while keeping the safety system active, so the system can be restarted in a controlled, safe way once the area is verified clear. This restartability under safety requirements is what drives choosing a monitored stop. A hard stop would typically require a more disruptive reset or power-down of safety logic, increasing downtime and complicating a safe restart. The other details—color, payload, or sensor brand—don’t influence this safety-mode decision because they don’t affect how the safety function is implemented or restarted.