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Yes
Plan to integrate photo eyes (photoelectric sensors) in your site plan. Photo eyes are wired to the Controller
and require low voltage conduit to the operator and power supply. Refer to External Entrapment Protection
Sensors monitored by HySecurity Gate Operators on page 9.
Understand your site requirements and use the layout diagrams available to determine the most appropriate
mounting positions for additional photo eyes. The Controller has three sensor inputs.
If there are no other external entrapment protection sensors, then for slide gates, swing gates or any site that
must comply with UL 325 monitored entrapment protection regulations, it is highly recommended that at
least two photo eyes are installed to serve and reverse the gate in each direction of travel (Open and Close
directions).
The two common photoelectric sensor types are thru-beam and retro-reflective; each has its advantages.
•
A thru-beam sensor is generally more powerful and able to function more reliably in inclement
weather.
•
A retro-reflective sensor (generally less reliable in inclement weather or low visibility) provides
convenience due to minimal wiring.
NOTE: In an outdoor environment (because of reduced performance), avoid using a retro-reflective sensor to
span a distance greater than 24 feet (7.3 meters).
Compatibility
The UL 325 standard requires that a photoelectric sensor be laboratory tested and "recognized" under UL 325.
In order to be compatible with all HySecurity operators, a photo eye must be rated to function from 24 VDC
source power.
A list of tested and approved external entrapment protection sensors (normally closed contacts) that are
compatible with HySecurity gate operators can be found online at the following public site:
HySecurity Gate
Operators.
Installation
Install photo eyes according to the following steps.
1. Locate the photo eye in line of sight to the receiver or reflector that is mounted to protect zones of
potential entrapment.
2. Mount the receivers on the left or right side of the gate operator.
3. Mount the emitters just beyond the travel of the gate.
NOTE: The installation locations are intended for pedestrian detection. If photo eyes are also to be used for
vehicular detection, consider (in addition to the low elevation photo eye for cars) installing another photo eye
at a height of about 55 inches (140 cm) to detect semi (tractor- trailer) trucks.
54
MX3650-01 Rev. D
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StrongArmParkDC Programming & Operations
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Gate Safety for
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