Wallace Perimeter Security SPEEDGATE - External Entrapment Protection Sensors

SPEEDGATE Installation and Maintenance Manual Revision 1 - MAY 2023
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EXTERNAL ENTRAPMENT PROTECTION SENSORS
External Entrapment Protecon Sensors
The SpeedGate is equipped with a Type A inherent entrapment sensor (IES) which is a reduced speed
sensor/torque change sensor, as described in “Inherent Entrapment Sensor” on page 26. The IES is an
internal device built into the SpeedGate operator.
UL 325 Safety Standard compliance requires installaon of external entrapment protecon sensors, the
number of which, depends on the entrapment hazards that exist at each parcular installaon.
To comply with UL 325, the following external sensors may be used:
• Contact sensors, such as edge sensors
• Non-contact sensors, such as photoelectric eyes
The site designer or installer can choose either photoelectric eyes or edge sensors or use these devices in
combinaon. Whatever devices are used, protecon in both the opening and closing direcons of gate
travel must be provided.
The UL 325 Safety Standard specically requires that edge sensors or photoelectric eyes or a combinaon
of both devices be installed to protect against pedestrian entrapment in BOTH direcons of the gate travel
and where an entrapment hazard exists.
PHOTOELECTRIC EYES: One or more photoelectric eyes shall be located where the risk of entrapment
or obstrucon exists, such as the perimeter reachable by a moving gate. Refer to “Figure 2. SpeedGate
Common Entrapment Zones” on page 33.
EDGE SENSORS: One or more edge sensors shall be located on the inner and outer leading edge of a swing
gate where the risk of entrapment or obstrucon exists. If the boom edge of the swing gate is situated
more than 6 inches (152 mm) above ground level at any point in its arc of travel, one or more contact
sensors must be located on the boom edge, as well.
SENSOR SECURITY: A hard -wired sensor shall be located and its wiring arranged so that communicaon
between the sensor and gate is not subjected to mechanical damage.
SENSOR FUNCTION and COMMUNICATION: A sensor that transmits its signal to the gate system must
be located so its signal is not impeded by building structures or other obstrucons. All sensors must be
installed so that they funcon as intended for the end-use condions.
A photoelectric eye or contact sensor is
also required to protect against possible
entrapment if the gate opens to a
posion less than 16 inches (40.6cm)
from any object, such as a post or wall.