Controlled Products Systems Group HRG 220-A ST - Manual (Page 53)

Installation and Maintenance Manual
39
Installing Gate Reversing Edge (Contact Type) Sensor
1. Follow the guidelines in the Entrapment Protection Schematic to plan the most appropriate
mounting positions for the edge sensors to be installed. For swinging gates. one or more contact
sensors (edge sensors) shall be located on the inside and outside leading edge, and on the
bottom edge of a swinging gate that has more than 6‖ clearance to the road. A requirement of
the UL 325 standard is that
an edge sensor be laboratory tested and ―recognized‖ under UL 325.
2. Drill holes through the edge’s mounting channel and through the surface that each gate edge is to
be mounted. Securely fasten every edge sensor. Vertically mounted edge sensors should all be
placed not higher than 6‖ above the ground.
3. Edge sensors that are not attached to the moving gate, such as post mounted sensors are wired
in parallel and directly connected to the gate operator:
a. If the gate is swinging open to a wall with less than
16‖ clearance, mount a gate edge to
the wall that aligns with the gate when it is in the open position.
b. Always route the leads of the edge sensors to the gate operator so that they are protected
from physical damage.
c. Connect one edge sensor lead to our common buss on the power supply board and the
other to terminal #13, which is labeled Edge Sensor input.
4. Edge sensors may be used with an edge transmitter and a receiver in order to transmit to the
gate operator. We do not recommend the use of retractable cord reels or curl cords because of
durability problems with these devices in outdoor environments.
a. Mount gate edge sensors to the leading edge and bottom edge of the gate so that
entrapment protection is provided in both directions of travel.
b. Mount one or two edge transmitters (Linear Model #3022 or equivalent) onto the gate
panel near the upper corner of the leading edge of the gate. All gate edges will function
correctly if only one transmitter is used, but wiring multiple edges to a single transmitter
may be impractical or displeasing visually.
c. Connect the edge(s) to the terminals in the edge transmitter and set the DIP switches of
the transmitter to match the setting in the receiver to be used.
5. Mount a commercial style radio receiver* (external antenna type) on the inside of the operator,
below the electrical box. Knock out the smallest hole in the lower right corner of the electrical box
and route the wires to the area marked Radio Options. Only three wire connections are needed
because the 24-Volt supply and the radio output share a wire. Being certain to observe polarity,
crimp the black radio power wire together with one of the radio output wires into a .25‖ spade
connector and connect to the COM terminal. Connect the red wire to the +24V terminal and
connect the other radio output contact wire to the spade marked EDGE. Note that this terminal is
the same as the #13 input terminal labeled Edge Sensor on the main control board.
a. Mount an external antenna onto the top of a fixed post of the fence near the operator.
b. Connect the antenna into the socket on the radio receiver.
c. Set the DIP switches in the receiver to match the same code used in the transmitter.
6. Test the operation of the reversing edge to make sure that it is functions correctly. Advise the
user of the gate to be certain to retest this vital function weekly.
* If there is also to be a radio receiver for a hand held transmitter to operate the gate, be certain to
use a two channel commercial receiver. Remember that the transmitter and receiver must have their
codes set the same or they will not function.