The pendant emergency stop button remains active even when the teach pendant is turned off.

• A. True
• B. False
• C. Only when connected to power
• D. It is disabled when off

Answer: (A)

Emergency stop buttons are wired into a dedicated safety circuit that operates independently of the teach pendant’s power. When you press the E-stop, it opens the safety path and the controller latches the stop condition, so the robot remains stopped even if the pendant is turned off. A reset, following safety procedures, is required to clear the stop and allow restarting. Because safety design keeps the E-stop active regardless of pendant power, the statement is true. The other interpretations would undermine safety by implying the stop could vanish without a reset or simply when power is present.