14 www.hysecurity.com
Installer Safety
Automatic gate operators are intended only for vehicular use
and pedestrians must be routed to a separate pedestrian gate.
However, sensors are still required in order to provide a degree of
protection should anyone stray into the area of an automatic gate.
Generally there are two types of external sensors that may be used:
Contact sensors, such as edge sensors, 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, HySecurity highly recommends
the use of external sensors for all automatic gate applications.
The specifi er or installer may choose either photoelectric
eyes or edge sensors, or use these devices in combination, but
protection in both the open and closing directions of gate travel
must be provided. The UL 325 standard for automatic sliding gates
specifi cally requires the following:
PHOTOELECTRIC EYES 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.
CONTACT SENSORS One or more contact sensors (edge sensors)
shall be located at the leading edge, trailing edge and post(s)
mounted both inside and outside of a sliding gate.
CONTACT SENSOR SECURITY A hardwired contact sensor shall
be located and its wiring arranged so that communication
between the sensor and gate is not subjected to mechanical
damage.
CONTACT SENSOR COMMUNICATION 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.
UL 325 LISTING 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 safety illustrations in this manual’s Installation section
and consider your specifi c installation to determine where greatest
entrapment risks exist. Locate edge sensors and/or photoelectric
sensors accordingly. Be certain that a suffi cient number of sensors
are used so that both directions of gate travel are properly guarded.
Go to www.ul.com for the most up-to-date list of gate operator
Underwriter Laboratory standards (UL 325). Go to www.astm.org
for a complete list of ASTM F2200 gate and fence standards.
Underwriter Laboratories (UL) and the American Society for
Testing and Materials (ASTM) are responsible for many current
regulations regarding gate operators and automated gates. These
standards are revised periodically. Go to www.ul.com for the most
up-to-date UL 325 gate operator standard. Go to www.astm.org for
the most up-to-date ASTM F2200 gate and fence standard.
Secondary pedestrian entrapment sensors
WARNING: To reduce the risk of serious injury
or death, read and follow all Installation Manual,
Reference Manual and Warning Label instructions.
Safety for Installers