SAFETY REQUIREMENTS
PHOTO EYES:
One or more non-contact sensor
(photo eyes) shall be located where entrapment risk
or obstruction exists, such as perimeter reachable by a
moving gate.
Care shall be exercised to reduce the risk of nuisance
tripping, such as when a vehicle trips the sensor while the
gate is moving.
EDGE SENSORS:
One or more contact sensors (edge
sensors) shall be located at leading edge, trailing edge,
and post-mounted, both inside and outside of a sliding
gate.
One or more contact sensors shall be located on the inside
and outside leading edge of a swing gate. Additionally, if
the bottom edge of a swing gate is greater than 6"(152mm)
but less than 16"(406mm) above the ground at any point in
its arc of travel, one or more contact sensors shall be located
on the bottom edge.
SENSOR SECURITY:
A hard-wired contact sensor shall
CAUTION
A contact or non-contact sensor is also required to
protect against possible entrapment if gate opens to
a position less than 16 inches from any object, such as
a post or wall.
be located and its wiring arranged so that communication
between sensor and gate is not subjected to mechanical
damage.
SENSOR FUNCTION and COMMUNICATION:
A sensor
that transmits its signal to gate operator must be located
so its signal is not impeded by building structures or other
obstructions. All sensors must be installed so that they
function as intended for end-use conditions.
UL 325 LISTING:
Edge sensors and photo eyes must
be tested and labeled as “Recognized Components” or
otherwise certi
fi
ed to UL 325 requirements in order to
be deemed acceptable for use in a gate operator. Study
Important Safety Instructions and consider your speci
fi
c
installation to determine where greatest entrapment
risks exist. Locate edge sensors and/or photo sensors
accordingly. Be certain that a suf
fi
cient number of sensors
are used so that pedestrians are protected from entrapment
in both directions of gate travel and all hazard areas are
fully protected. Most HySecurity gate operators require
external entrapment sensors that utilize Normally Closed
(NC) contact means of monitoring. HySecurity gate
operators utilizing the SmartCNX Controller require external
entrapment sensors that have a 10k Ohm or 4-wire pulsed
monitoring scheme. Refer to UL website at
www.ul.com
for
most up-to-date list of gate operator safety standards (UL
325). Refer to
www.astm.org
for a complete list of ASTM
F2200 Gate and Fence Standards.
Gate operator will not automatically cycle the gate unless an indication that the appropriate
number of external entrapment protection sensors are connected and operational.
The normally closed (NC) entrapment protection sensors wired to the Controller’s SENSOR
inputs are monitored using HySecurity software. Prompts appear on the display requesting
speci
fi
c con
fi
gurations based on the gate operator type.
Use of Approved External Entrapment
Protection Sensors is REQUIRED
325
Effective August 1st, 2018, the UL 325 Standard has changed:
• The operator shall monitor for the presence of every device at least once during each open and close cycle (32.1.8)
• It shall not be possible to make simple modi
fi
cations in the
fi
eld by adding, suppressing or changing, either on the operator or
external entrapment protection device(s), to bypass, interfere with, or otherwise defeat the monitoring function. (32.1.10)
• Entrapment zones are now de
fi
ned for each gate type (4.23, 4.24, 4.29, 4.34)
SLIDE GATES:
To enable fully automatic operation, all SLIDE gate operators will require a minimum of TWO monitored external
entrapment protection sensors (one for each direction) to protect entrapment zones in both the open and close direction of travel.
Preferred solution for slide gates:
A photo eye for the close direction and a hard-wired edge sensor for the open direction
that is mounted to the face of the leading post of the fence behind the gate. (Reach through injuries are the most common
hazard associated with automatic sliding gates)
SWING GATES:
To enable fully automatic operation, all SWING gate operators will require a minimum of ONE monitored external
entrapment protection sensor to protect entrapment zones in either the open or close direction of travel. However, an additional
monitored sensor is required if there is a risk of entrapment in both directions of gate travel.
Preferred solution for swing gates:
A photo eye for the close direction and/or a hard-wired wraparound edge sensor on the
leading edge of the gate, which protects for both directions of gate travel.
MX4505 Rev. E ©2020
12
hysecurity.com | 800-321-9947
SlideSmart DC Programming and Operations
