In a robot system, the pendant e-stop is the only required e-stop.

• A. False
• B. True
• C. It depends on the system
• D. Not applicable

Answer: (A)

Emergency stopping in robot systems is designed as a layered safety approach. The pendant e-stop is a valuable and common option, but it is not the sole requirement. A robust safety design typically includes multiple, easily reachable e-stops distributed around the cell or workstation, so a stop can be initiated from different locations or if one device is unavailable or fails. In addition, other protective measures like safety interlocks, light curtains, or safety-rated sensors may be needed to monitor access and hazardous zones. The exact number and placement depend on a formal risk assessment and applicable standards. Because you can’t assume a single device will cover all risk scenarios, the statement is not correct.