The GTO Access Systems Photoelectric Dual Beam Detector uses dual beam and through-beam technology
to reduce false detections when detecting obstructions. When the beams detect the presence of a moving
object, the detection will cause the gate(s) to stop and reverse to the fully open position. As long as the
beam is obstructed the gate(s) will remain open. Not compatible with solar powered gate operators.
For use with all GTO Access Systems and Mighty Mule AC and DC powered gate operators.
PARTS DESCRIPTION
INTERNAL VIEW OF RECEIVERCOVER
Response Time
Adjustment Screw
(receiver only)
Signal Level
Test Points
Tamper Switch
Horizontal Angle
Adjustment Bracket
Cover Locking
Screw
Connection
Terminals
Indicator
Lights
Vertical
Alignment
Screw
Sight Hole
Lens
Wiring Hole
For more information on GTO’s full line of automatic gate openers and access controls visit our website at www.gtoaccess.com
Diagram illustrates correct placement of photo beams in relation to the gate.
Exterior placement
of Photo Beams
(placed outside of path of gate)
Vehicular Gate
Interior placement
of Photo Beams
(placed outside of path of gate)
Mounting Cautions
Be sure that the optical axis is never obstructed. (The optical axis is both the vertical and horizontal
range of detection, or beam, between the transmitter and receiver)
Do not mount the detector in the following conditions:
Where obstructions (plants, fences, etc.)
are between the receiver and the sender.
Mounting Height
Sensing Area
Where the mounting
surface is unstable.
Spread of Beam
Beam Alignment
Range
Horizontally 180°
Up/Down Direction
20° (±10° )
The optical axis can be fine tune
adjusted in horizontal and
vertical direction.
Where sunlight and headlights shine
directly into the front of the receiver.
Transmitter
Receiver
When using more than one set make
sure to alternate the transmitters
and detectors as above.
Transmitter
Transmitter
Receiver
Transmitter
Receiver
Receiver
2
Wall Mounting
1. Remove Photo Beam
cover by loosening the
cover holding screw, but
DO NOT REMOVE THE
SCREW ALL THE WAY.
3. Remove the rubber
knockout and use the
screw holes to mount
the unit.
SCREW HOLE
RECEIVER
GOOD LEVEL ALARM
SCREW HOLE
2. Pull the wire through the
wiring hole at the top of the
unit, from back to front.
4. Mount the Photo Beam on
the wall while running the wire
into the wiring location in the
wall.
Pole Mounting
1. Remove the Photo Beam cover (as shown in step 1 above).
2. Feed the wire through the mounting pole.
3. Using the Mounting Plate and Bracket secure the Photo
Beam to the mounting pole.
Feed Wire
Through Pole
Mounting
Bracket
Base Plate
Back to Back Installation
(Refer to the gure above)
3
Connecting Photo Beams to GTO Access Systems
Wiring Terminals
RECEIVER
1234567
POWER
ALARM
TAMPER
+ –
Wiring Terminals
TRANSMITTER
1267
POWER
TAMPER
+ –
and Mighty Mule Control Boards
IMPORTANT: DO NOT use Photo Beams on systems charged with solar panels.
Make sure the power switch to the opener is turned off before connecting safety device
wiring to the terminal blocks. Unplugging the transformer does not turn power to the
opener OFF.
Wiring Precautions
• Wire with 16awg minimum (RB509)
• 300 ft (91.4m) max length
• Be sure to capture the wire ends under
the wire clamp plates.
• Avoid frayed ends on wires that might
produce a short circuit.
• Be careful not to overtighten the screws
as this may strip the threads in the plastic
Wire
Terminal
Block
CorrectWrongWrong
WireWire
Terminal
Block
Terminal
Block
Terminal Strip Identication
The diagrams below represent the terminal strips on the receiver and transmitter and can be used for
reference for connections.
4
Wiring the Photo Beams to GTO Access Systems and
Mighty Mule Gen 3 (blue) or green Gate Opener Control Boards.
(models listed below)
Connections for
GTO Access Systems 2000XL,
3000XL, 4000XL; Mighty Mule FM500
and FM600 Control Boards
INTERIOR TOP OF
TRANSMITTER
1 26 7
+ –
POWER
6
7
TAMPER
Transmitter/Receiver Connections
To + Pos Terminal of Battery
To - Neg Terminal of Battery
INTERIOR TOP OF
RECEIVER
1 23 4 56 7
+ –
POWER
ALARM
6
7
TAMPER
12 Volt Battery or
12Vdc source
CONTROL INPUTS
COM
COM
CYCLE
1. Connect 1 and 2 power terminals
of the transmitter to the 1 and 2
power terminals of the receiver.
2. Connect 1 and 2 power terminals
of the Receiver OR Transmitter to
the battery.
RECEIVER
3. Connect 3 and 5 terminals of the
receiver to the COM and SAFETY
terminals on the control board.
ALM
BLK
EXIT
SAFETY
EDGE
CLOSE
SHADOW
GRN
EDGE
OPEN
GTO RCVR.
Wires from Photo Beams
RED
5
Wiring the Photo Beams to Mighty Mule FM350 Gate Opener Control
Board.
To + Pos Terminal of Battery
To - Neg Terminal of Battery
INTERIOR TOP OF
TRANSMITTER
1 26 7
+ –
POWER
6
7
TAMPER
Transmitter/Receiver Connections
Connections for FM350 and
FM352 Control Boards
CHARGINGPOWER
INTERIOR TOP OF
RECEIVER
1 23 4 56 7
+ –
POWER
ALARM
6
7
TAMPER
1. Connect 1 and 2 power terminals
of the transmitter to the 1 and 2
power terminals of the receiver.
2. Connect 1 and 2 power terminals
of the Receiver OR Transmitter to
the battery.
12 Volt Battery or
12Vdc source
18VAC
SOLAR
PANEL
LINK
EXIT
EDGE
SAFETY
CYCLE
BLK
GRN
COMMON
RED
RECR
Wires from Photo Beams
3. Connect 3 and 5 terminals of the
receiver to the COM and SAFETY
terminals on the control board.
6
Wiring the Photo Beams to GTO Access Systems GP-SL050, GP-SW050,
COM
COM
COM
CYCLE
SAFETY
SHADOW
OPEN
CLOSE
STOP
OPEN
EDGE
CLOSE
EDGE
RUNNING
CLOSED
LED10
LED09
W1
CUT TO USE
3 BUTTON
STATION
CYCLE
SAFETY
SHADOW
OPEN
EDGE
CLOSE
EDGE
OPEN
CLOSE
STOP
COM COM COM
GP-SL100 and GP-SW100 Gate Opener Control Boards.
To + Pos Terminal of Battery
To - Neg Terminal of Battery
INTERIOR TOP OF
TRANSMITTER
1 26 7
+ –
POWER
6
7
TAMPER
Transmitter/Receiver Connections
INTERIOR TOP OF
RECEIVER
1 23 4 56 7
+ –
POWER
ALARM
6
7
TAMPER
1. Connect 1 and 2 power terminals
of the transmitter to the 1 and 2
power terminals of the receiver.
2. Connect 1 and 2 power terminals
of the Receiver OR Transmitter to
the battery.
12Vdc source
Wires from Photo Beams
3. Connect 3 and 5 terminals of the
receiver to the COM and SAFETY
terminals on the control board.
7
Wiring the Photo Beams to Mighty Mule 200 Gate Opener Control
Board.
To + Pos Terminal of Battery
To - Neg Terminal of Battery
INTERIOR TOP OF
TRANSMITTER
1 26 7
+ –
POWER
6
7
TAMPER
Transmitter/Receiver Connections
VAR1
POWER
VAR3
VAR4
VAR5
VAR6
VAR3
GRN
M_BLK
M_RED
INTERIOR TOP OF
RECEIVER
1 23 4 56 7
+ –
POWER
ALARM
6
7
TAMPER
1. Connect 1 and 2 power terminals
of the transmitter to the 1 and 2
power terminals of the receiver.
2. Connect 1 and 2 power terminals
of the Receiver OR Transmitter to
the battery.
3. Connect 3 and 5 terminals of the
receiver to the COM and SAFETY
terminals on the control board.
12 Volt Battery or
12Vdc source
LED3
CHGR
CHGR
COM
EXIT
SAFETY
CYCLE
EDGE
COM
LOCK+
LOCK -
Wires from Photo Beams
PGOK200 Rev. XC
GTO Inc. Tallahassee, FL
8
Beam Alignment
Adjusting Optical Axis with the Viewnder
1. With the POWER connected and the
RECEIVER and TRANSMITTER covers
removed adjust the horizontal pivot,
and the vertical adjustment screw using
the built-in viewer. Look through the
viewnder on either side and adjust to put
the opposite sensor in the middle of the
cross-hairs in the view nder. The GOOD
LED should be on. (Adjust the light axis
until the indication lamp is on.)
The brighter the LEVEL (green) LED the
more precise the alignment of the beams.
TRANSMITTER INDICATOR
POWER LED (green)
• ON when when light
TRANSMITTER
POWER
RECEIVER INDICATORS
beam is transmitting.
GOOD LED (green) • Use when adjusting bean alignment. ON when beams
are aligned.
LEVEL LED (green) • ON indicates receiving signal. Brightness varies, de-
RECEIVER
GOOD LEVEL ALARM
pending on beam alignment.
ALARM LED (red) • ON indicates beam blocked. Use when setting response
time.
Vertical
Adjustment
Screw
RAISELOWER
GOOD
LEVEL
ALARM
Close-up of
viewfinder with
reflection centered.
POWER
Horizontal
Adjustment
Bracket
Adjusting Optical Axis with a Voltmeter
If you have a voltmeter, the best method of adjusting the optical axis
is to measure the signal level at the test probe points.
1. Insert the voltmeter probes into the test points on the side of the receiver.
2. Adjust the horizontal angle and vertical angle until the voltage is at
maximum.
3. If a voltage of 1.2v or above cannot be reached, the transmitter and/or
receiver should be readjusted.
Beam Interruption Time Adjustment
Adjusts the amount of time between the beam being broken and the
normally open relay closing. Adjust time adjustment dial from (1) detecting
fast moving objects to (5) detecting slow moving objects depending on
your type of application and environment.
The factory setting is set to 1 to detect fast moving objects.
1
Fast Moving
Objects
9
5
Slow Moving
Objects
Voltmeter
Voltmeter
test points
+ –
LEVEL
1
2
R
E
S
P
5
4
E
M
I
3
T
E
S
N
O
VERIFY CORRECT OPERATION
After installation, conrm
correct operation by suitable
walking tests. Refer to the
appropriate LED indicators
during the walking test and
ensure the gate opener
operates in the correct manner.
Transmitter
Receiver
ConditionIndication
TransmittingPOWER LED is ON
Beam Not BlockedGOOD and LEVEL LEDs are ON
Beam BlockedALARM LED is ON
TROUBLESHOOTING
SymptomPossible CauseRemedy
Transmitter LED does not light. Improper voltage supplied. Check the power supply and wiring.
Receiver LEDs do not light. Improper voltage supplied. Check the power supply and wiring.
Alarm LED does not light,
even when beams are blocked.
When beams are blocked, receiver LED
lights are ON, but not alarm.
The alarm indication lamp of receiver is
always on.
Intermittent Alarm (detection)
*If you’re experiencing false detections
then increase the time adjustment by 1
increment at a time until the photo beam
functions as desired.
For online Technical Support visit the Online Troubleshooter Wizard 24 hrs/day 7 days/week at
http://support.gtoinc.com/support/troubleshooter.aspx and open a Tech Ticket