In a motorized rigging system, what stops movement when the system reaches a preset position?

• A. A lockout device
• B. A spreader plate
• C. Limit switch
• D. Eye bolt

Answer: (C)

End-of-travel detection stops movement. A limit switch is placed at the ends of the rigging’s travel and is triggered when the moving part reaches the preset position. When activated, it interrupts power or sends a stop/reverse command to the motor controller, halting the rigging exactly where it’s meant to stop. This protects the load, gears, and operators from over-travel and ensures repeatable, safe positioning. Other devices don’t serve this automatic end-point function: a lockout device is for safety locking of controls, a spreader plate is structural hardware for load distribution, and an eye bolt is simply a fastener.