CFP Gate Hardware & Access Control Systems 2

Question 1

UL 325 is the safety standard that specifically governs:

Accepted Answer

Automatic gate operator design, construction, and installation

Answer

UL 325 is the Underwriters Laboratories standard for door, drapery, gate, louver, and window operators, establishing safety requirements for automatic gate systems.

Question 2

What safety device creates an invisible beam across a gate opening and stops gate movement when an object breaks the beam?

Accepted Answer

Photo eye (photoelectric) sensor

Answer

Photo eye sensors emit an infrared beam across the gate opening; if the beam is interrupted by a person or object, the gate stops and typically reverses to prevent entrapment.

Question 3

A vehicle loop detector embedded in pavement at an automated gate is primarily designed to:

Accepted Answer

Detect vehicle presence in the gate path to activate or hold the gate open

Answer

Loop detectors sense the inductance change caused by a metal vehicle, triggering the gate to open or preventing it from closing on a vehicle still in the path.

Question 4

Per UL 325, what is the maximum gap dimension under a horizontal slide gate that does NOT constitute an entrapment zone?

Accepted Answer

Less than 2.25 inches

Answer

UL 325 defines a gap of less than 2.25 inches as too small for entrapment; gaps between 2.25 and 4 inches are classified as entrapment zones and require guarding or elimination.

Question 5

An edge sensor (safety edge or contact sensor) mounted on an automatic gate is designed to:

Accepted Answer

Stop and reverse the gate immediately upon contact with an obstruction

Answer

Edge sensors detect physical contact with a person or object and immediately signal the operator to stop and reverse, preventing crush injuries.

(CFP) Certified Fence Professional Practice Test

(CFP) Certified Fence Professional Practice Test

CFP Gate Hardware & Access Control Systems 2