The deadman switch is active even when the teach pendant is turned off.

• A. True
• B. The deadman switch remains active in all power states.
• C. False
• D. It is active only when the pendant is on

Answer: (C)

The deadman switch is a safety control that only works when the control circuit is powered and the operator is actively signaling. It must be pressed or held to enable motion, and releasing it stops or blocks movement. Therefore, it cannot be active if the teach pendant is turned off, since turning off the pendant powers down the control path that monitors the switch. In practice, this means the deadman switch is active only when the pendant is on.