HySecurity SlideDriver 50VF2 Installation And Reference Manual Download

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Section 4

—Installing Photoelectric (Non-contact) Sensors

General Information:

To plan the most appropriate mounting positions for the photoelectric sensors, review the Entrapment Protection Device
illustration on page 33. If secondary external entrapment protection sensors (typically an edge sensor) are NOT installed,
at least two photoelectric sensors are required. The purpose of the photoelectric sensors is to reverse the gate in each
direction of travel. The Smart Touch Controller has two photoelectric sensor inputs (Photo eye open and Photo eye close).

Two common types of photoelectric sensors exist:



Thru beam - A thru beam sensor is generally more powerful and able to function reliably with dirty optics and in

poor weather.



Retro-reflective - A retro-reflective sensor has the convenience of not requiring the installation and electrical

wiring of the remote emitter required in a thru beam system, but is generally more problematic in poor weather.

NOTE

: Avoid use of a retro-reflective device to span a distance greater than 24 feet (7.3 meters) in an outdoor

environment because performance will probably be unsatisfactory.

Compatibility:

A requirement of the UL 325 standard is that a photoelectric sensor be laboratory tested and “recognized” under UL 325.
In order to be compatible with a HySecurity operator, a photo eye must be rated to function from 24 Volts DC source
power.

Installation:

Mount the photo eyes approximately 21 to 27.5 inches (53 to 70cm) above the ground and within 5 inches of the gate
panel or wall surface. A minimum of two photo eyes are required for both the opening and closing directions of travel
unless gate edges for entrapment protection exist. Refer to the DASMA Technical Data Sheet #377 for additional
considerations.

NOTE

: The installation locations described above are intended for pedestrian detection.

Mount the receivers on the left and right sides of the gate operator and the emitters just beyond the travel of the gate in
both the full open and full close positions of travel. In some situations, an additional photo eye should be installed on the
public side of the gate. If photo eyes are also being used for vehicular detection, consider, installing the low elevation
photo eye for cars and another photo eye at a height of about 55 inches (140cm) to detect semi-trucks.

Configuration:

If the photo eye has an internal switch for setting Light Operate vs. Dark Operate, select Light Operate. If the photo eye
has a relay output and has both NO and NC terminals, some experimentation may be required to determine the proper
connection. This is because, in the Light Operate mode, the output relay is normally energized and releases when the
beam is blocked. Some manufacturers label an output as NO, when it is actually an NC contact. If the photo eye has a
solid-state output you must choose a sinking type connection.

Connection:

Three wires to the receiver and two wires to the emitter are all that is required.

a. The +24 Volt source power is obtained at one of the three spade terminals on the power supply board.

b. The –24 Volt source power is obtained from spade terminals on our terminals #14 or #15, labeled (Photo Eye Power)

on the Smart Touch Controller board.

NOTE

: The –24 Volt Photo Eye Power also supplies the photo eye output Common.

c. The photo eye NO or NC output connects to the Smart Touch Controller board at terminal #19 if the photo eye spans

the road, or at terminal #17 if the photo eye spans the gate’s open storage area.