Hy-Security HRG 220 ST, Руководство по установке и обслуживанию

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Installation and Maintenance Manual
35
Placement and Use of Secondary Pedestrian Entrapment Sensors
WARNING:
To reduce the risk of serious injury or death, read and follow all instructions in the
gate operator handbook and on the warning labels.
Automatic gate operators are intended only for vehicular use and pedestrians must be routed to a
separate man gate, however sensors are still required in order to provide a degree of protection should
anyone happen to stray into the area of an automatic gate. Generally there are two types of external
sensors that may be used: Contact type sensors, such as an edge sensor, and non-contact sensors,
such as photoelectric eyes. Current industry standards require the use of either type or both of these
sensors, as a secondary device, in Class I and Class II automatic sliding gate installations, because the
general public is likely to be present. Although there are alternatives for Class III and IV installations, we
highly recommend the use of external sensors for all automatic gate applications.
The specifier or installer may choose either photoelectric eyes or edge sensors, or use these devices in
combination, but both the open and closing directions of gate travel must be guarded. The UL 325
standard for automatic sliding gates specifically requires the following:
•
One or more non-contact sensors (photoelectric eyes) shall be located where the risk of
entrapment or obstruction exists, such as the perimeter reachable by a moving gate.
• One or more contact sensors (edge sensors) shall be located at the leading edge, and bottom
edge of a swinging gate that has more than 6” clearance to the road.
•
A hardwired contact sensor shall be located and it’s wiring arranged so that the communication
between the sensor and the gate is not subjected to mechanical damage.
•
A contact sensor that transmits its signal to the gate operator shall be located such that the signal
is not impeded by building structures or other obstructions and shall function under its intended
end-use conditions.
•
The contact and non-contact sensors must be tested and labeled as “Recognized Components”
under the UL 325 standard in order to be deemed acceptable for use in this application.
Study the entrapment protection schematic and consider your specific installation to determine
where the greatest risk of entrapment exists. Locate the edge sensors and/or the photoelectric
sensors accordingly. Be certain that a sufficient number of sensors are used so that both
directions of gate travel are guarded.