Maximum Open Direction Current Setting . . . . . . . . . . . . . . . . . . . . 14
Maximum Close Direction Current Setting . . . . . . . . . . . . . . . . . . .14
WARNING
ONLY QUALIFIED TECHNICIANS
SHOULD WORK ON
LINEAR RESIDENTIAL
ACTUATORS
WARNING
CONTROLS INTENDED FOR USER ACTIVATION MUST BE
LOCATED AT LEAST SIX FEET (6') AWAY FROM ANY MOVING
PART OF THE GATE AND WHERE THE USER IS PREVENTED
FROM REACHING OVER, UNDER, AROUND OR THROUGH THE
GATE TO OPERATE THE CONTROLS. OUTDOOR OR EASILY
ACCESSIBLE CONTROLS SHALL HAVE A SECURITY FEATURE
TO PREVENT UNAUTHORIZED USE.
LRA Linear Residential Actuator Installation Guide 228158 Revision X17 8-11-2011
Pre-installation Information
Before You Begin...
Before unpacking, inspect the carton for exterior damage. If
you fi nd damage, advise the delivery carrier of a potential
claim. Inspect your package carefully. You can check your
accessory box parts with the enclosed packing slip for your
convenience. Claims for shortages will be honored for only
30 days from the date of shipment.
Before installing the operator, read this manual completely to
ensure all requirements for proper installation are present. Verify
that the voltage to be used matches the voltage of the operator.
If you have any questions about the requirements for proper
installation of this gate operator contact technical support at
800-421-1587.
Always Check the Gate’s Action
It’s very important before installing the gate operator to
make sure the gate’s swing is free and level throughout
the entire swing path. If the gate does not seem to
operate properly, it may affect the operator performance
or greatly shorten the life of the unit. The gate should
also be designed so that airfl ow is ample to prevent
wind resistance and drag.
Gate Operator Classifi cations
All gate operators can be divided into one of four different
classifi cations, depending on their design and usage. Install
this gate operator only when the operator is appropriate for
the construction and usage class as defi ned below:
• Class I Residential Vehicular Gate Operator
A vehicular gate operator intended for use in a home or for one to
four single family dwellings with a common garage or parking area
associated with these dwellings.
• Class II Commercial / General Access Vehicular Gate Operator
A vehicular gate operator intended for use in a commercial location or
building such as a multi-family housing unit of fi ve or more single family
units, hotel, retail store or other building servicing the general public.
• Class III Industrial / Limited Access Vehicular Gate Operator
A vehicular gate operator intended for use in an industrial location or
building such as a factory or loading dock area or other location not
intended to service the general public.
• Class IV Restricted Access Vehicular Gate Operator
A vehicular gate operator intended for use in a guarded industrial
location or building such as an airport security area or other restricted
access locations not servicing the general public, in which unauthorized
access is prevented via supervision by security personnel.
Approved Obstruction Detection Devices
The following contact or non-contact obstruction detection
devices have been approved for use with Linear’s Residential
Actuators as part of a UL325 compliant installation:
• Contact Edges
Miller Edge Models MGO20, MGR20, MGS20, ME120
• Photoeyes
MMTC Model IR-55 (165’ range - P/N 2520-441)
MMTC Model E3K (28’ range - P/N 2520-031)
LRA Linear Residential Actuator Installation Guide
Safety Information and Warnings
THE FOLLOWING FORMATS ARE USED FOR SAFETY NOTES
IN THESE INSTRUCTIONS.
CAUTION
This type of warning note is used to
indicate the possibility of damage to the
gate or gate operator.
WARNING
This type of warning note is used to
indicate possible mechanical hazards that
may cause serious injuries or death.
WARNING
This type of warning note is used to indicate
possible electrical shock hazards that may
cause serious injuries or death.
Regulatory Warnings
Read the following before beginning to install Linear’s
Residential Actuators:
IMPORTANT INSTALLATION SAFETY INSTRUCTIONS
WARNING
TO REDUCE THE RISK OF SEVERE INJURY OR DEATH
TO PERSONS, REVIEW THESE INSTALLATION SAFETY
STEPS BEFORE PROCEEDING
1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.
2. Read the yellow “Safety Instructions” brochure enclosed with the
packet of information. If any pages are missing or are unreadable,
or you do not have the safety instructions, please call Linear at
1-800-421-1587 to request additional copies.
3. ALL ELECTRICAL CONNECTIONS TO THE POWER SUPPLY MUST
BE MADE BY A LICENSED ELECTRICIAN AND MUST OBSERVE ALL
NATIONAL AND LOCAL ELECTRICAL CODES.
4. A separate power-disconnect switch should be located near the
operator so that primary power can be turned off when necessary.
5. Install the enclosed warning signs on both sides of the gate. A
minimum of two (2) WARNING SIGNS shall be installed, one on each
side of the gate where easily visible.
6. Never reach between, through or around the fence to operate the
gate.
7. Never connect a button station within reach of the gate or on the
side of the gate operator.
8. Do not adjust the operator controller’s current sensing feature too
high. It should be adjusted high enough to keep the gate from falsely
triggering the sensing, but no higher than necessary for the gate to
operate. DO NOT DEFEAT THE PURPOSE OF THIS FUNCTION!
9. You must install all required safety equipment.
10. UL325 Compliance requires the use of contact edges or photoelectric
controls on all automatic or remotely-controlled gate operators.
11. The operator is intended for installation only on gates used for
vehicles. Pedestrians must be supplied with a separate access
opening. The pedestrian access opening shall be designed to
promote pedestrian usage. Locate the gate such that persons will
not come into contact with the vehicular gate during the entire path
of travel of the vehicular gate.
228158 Revision X17 8-11-2011
- 1 -
Linear Actuator Operator Overview
Wiring Specifi cations
The Model LRA Residential Linear Actuator is designed
to open and close a light-duty residential swing gate. The
operator can be used in left-hand or right-hand swing gate
installations on gate(s) with leafs weighing up to 600 pounds.
The LRA operator (or two LRA operators in dual gate
installations) connect by a cable to the APeX electronic
controller, which provides all connections for input and
entrapment detection devices. The Controller is housed in a
separate enclosure and contains a built-in radio receiver for
wireless activation by remote control transmitters.
Brackets attached to the gate and gate hinge post are for
mounting the operator and to provide a mechanism to move
the gate.
When the operator activates, the worm drive in the linear
actuator changes the fi xed distance between the two
brackets that the operator is mounted on. When the operator
pulls the two brackets closer together, the gate opens. When
the operator pushes the two brackets farther apart, the gate
closes (see Figure 1).
Adjustable magnetic limit switches in the operator detect the
open and closed positions of the gate.
WARNING
This operator is intended for installation only on gates used for
vehicles. Pedestrians must be supplied with a separate access
opening. The pedestrian access opening shall be designed to
promote pedestrian usage. Locate the gate such that persons
will not come into contact with the vehicular gate during the
entire path of travel of the vehicular gate.
GATE POST
GATE CLOSED
GATE
Refer to the following steps for details on power and
accessory wiring for the operator.
WARNING
ALL AC ELECTRICAL CONNECTIONS TO THE POWER SOURCE AND
THE OPERATOR MUST BE MADE BY A LICENSED ELECTRICIAN
AND MUST OBSERVE ALL NATIONAL AND LOCAL ELECTRICAL
CODES
USE COPPER WIRE ONLY!
AC Power Wiring
MODEL LRA POWER WIRING
SUPPLY VOLTS
115 VOLTS
1. The distance shown in the table above is measured in feet from the
operator to the power source. DO NOT EXCEED THE MAXIMUM DISTANCE. These calculations have been based on a standard
115 V supply with a 10% drop allowable. If your supply is under
the standard rating, the runs listed may be longer than what your
application will handle, and you should not run wire too near the
maximum distance for the gauge of wire you are using.
2. When large-gauge wire is used, a separate junction box (not supplied)
may be needed for the operator power connection.
3. Wire length calculations are based on the National Electrical Code,
Article 430 and have been carefully determined based on motor
inrush and operator requirements.
4. Connect power in accordance with local codes. The green ground
wire must be properly connected.
5. Wire insulation must be suitable to the application.
MAXIMUM DISTANCE (FEET)
SINGLEDUAL
3288164414
5224261212
WIRE GAUGE
POST BRACKET
GATE BRACKET
ACTUATOR
GATE OPEN
THE ACTUATOR PULLS THE
GATE BRACKET TOWARDS THE POST
BRACKET TO OPEN THE GATE
DC Control and Accessory Wiring
1. All control devices are now 24 VDC, which can be run up to 2000
feet with 14 AWG wire.
2. Control wiring must be run in a separate conduit from power wiring.
Running them together may cause interference and faulty signals in
some accessories.
Control Box Mounting
Locate the control box in the vicinity of the operator. The
APeX Controller mounts inside the control box. The operator
connects to the Controller via a 6-foot cable. For dual gate
installations, the LRA2 kit includes a 40-foot cable for the
second operator.
Mount the control box fi rmly to a non-movable object.
Knockouts are provided for conduits. Do not mount the
control box where a lawn sprinkler may spray water on it.
✓NOTE: When installing the cable connecting the operator to the
control box, be sure to leave some slack to allow for the swing of the
gate. Water tight connectors are highly recommended.
Figure 1. Linear Actuator Operation
LRA Linear Residential Actuator Installation Guide
228158 Revision X17 8-11-2011
- 2 -
Gate Layout Illustration
GATE FULLY CLOSED
ENTRY
EXIT
ROADWAY
GATE TOP VIEW
GATE BACK SIDE VIEW
LRA ACTUATOR IN
CLOSED POSITION
LRA ACTUATOR
GATE HINGE
LRA ACTUATOR IN
OPEN POSITION
GATE FULLY OPEN
PILLAR
POST OR
36"
RECOMMENDED
BOX
CONTROL
LRA Linear Residential Actuator Installation Guide
8" FROM CENTER OF
MINIMUM BACKSPACE
PILLAR
POST OR
1/2 GATE
HEIGHT
GATE HINGE
BOX
CONTROL
SHOWN
LEFT HAND
GATE OPERATION
LEAVE SLACK
ALLOW FOR
GATE SWING
IN CABLE TO
228158 Revision X17 8-11-2011
- 3 -
Mounting Bracket Installation
Examine Figure 2 for details on the required mounting
locations for the brackets. They must be mounted at the correct
locations to allow the operator to open the gate at a 90 degree
angle and to ensure the operator functions smoothly.
The brackets must also be mounted level in respect to each
other so the operator’s front and rear mounting points are
vertical and not offset at an angle.
LOCATE POST BRACKET AT THESE
DIMENSIONS FROM THE GATE
CENTERLINE AND HINGE POINT
NOTE: THE 5-1/2" AND
6" DIMENSIONS ARECRITICAL FOR PROPER
GATE OPERATION
6"
WARNING
The gate must be installed in a location so that enough
clearance is supplied between the gate and adjacent structures
when opening and closing to reduce the risk of entrapment.
Swing gates shall not open into public areas.
1. Measure approximately halfway up the gate height and determine
good strong spots located in the required areas to mount the brackets
on the post and gate.
2. Using Figure 2 as a guide, mark the locations on the post or pillar
and the gate for the mounting brackets. The top surface of the post
bracket must be 3/8” below the top surface of the gate bracket to
allow for the bolt-on operator bracket’s 3/8” thickness.
✓NOTE: Depending on the gate design, an additional reinforcing
plate welded to the gate may be required to provide a good spot to
mount the gate bracket.
Universal Post Bracket Installation
✓NOTE: When installing the post bracket on a round post or masonry
pillar, use improvised methods (additional plate with lag bolts and anchors,
concrete wedge anchors, U-bolts, etc.) to securely fasten the bracket.
1. Tack weld the post bracket to the post at the marked spot and
double-check its level and height.
2. Finish welding the post bracket to the gate post and allow the weld to cool.
3. Attach the bolt-on operator bracket to the post bracket at the correct
depth and angle using three bolts and locknuts (there are 18 possible
positions). Install the operator bracket pin as shown in Figure 3.
5-1/2"
29-1/2"
SETTING THE BRACKETS AT THIS
DISTANCE WILL CAUSE THE GATE
TO OPEN AT 90 DEGREES (DEPENDING
ON THE LIMIT SWITCH SETTINGS)
Figure 2. Required Bracket Locations
WELD POST BRACKET
TO POST
ASSEMBLE OPERATORBRACKET PIN WITH
THICK SPACER ON PIN
ATTACH OPERATOR
BRACKET TO POST
BRACKET AT PROPER
LOCATION WITH
THREE BOLTS AND
LOCKNUTS
Gate Bracket Installation
Before welding the gate bracket, be sure the centers of the
operator mounting holes on the brackets will end up 29-1/2”
apart when the gate is fully closed.
1. Tack weld the gate bracket to the gate at the marked spot and
double-check its level and height.
2. Finish welding the gate bracket to the gate.
3. After the welding is completed and the gate bracket has cooled,
snap the limit switch magnet assembly onto the gate bracket (see
Figure 4).
4. From the top side of the gate bracket, slide the load bushing into the
bracket hole.
Alternate method to locate the gate bracket:
1. Hold the gate bracket with the magnets installed onto the LRA traveler.
2. Run the unit to the full open position.
3. Place the rear of the arm onto the post bracket.
4. Manually fully open the gate.
5. Position the gate bracket in the required position.
6. Remove the magnet assembly and bolt or weld the bracket in place.
LRA Linear Residential Actuator Installation Guide
Figure 3. Post Bracket Installation
USE A
LEVEL
SNAP MAGNET
ASSEMBLY ONTO
GATE BRACKET
AFTER WELDING
Figure 4. Gate Bracket Installation
228158 Revision X17 8-11-2011
- 4 -
WELD GATE
BRACKETTO GATE
Operator Setup
Operator Mounting
The operator mounts on the post bracket pin and into the
gate bracket bushing. Refer to Figure 5.
1. With the gate closed, carefully position the operator over the mounting
brackets.
2. Lower the operator onto the post bracket pin while guiding the
operator’s worm drive traveler shaft into the gate bracket bushing.
3. Install the washer and clip-ring on the post bracket pin.
4. Install the washer and clip-ring on the traveler shaft.
Controller Connection
The APeX Controller is mounted in a sealed NEMA4
enclosure. Open the cover for installation access.
The Controller contains two 5-position plug-in terminal
blocks for connection to one or two LRA operators. Terminal
block MOTOR-1 is used in single gate LRA installations.
Terminal block MOTOR-2 is used for the second arm in dual
gate LRA2 installations.
To make wiring easy, the terminal blocks are removable and
plug into the Controller’s circuit board.
1. Route the operator cable up through the fl uid-tight strain-relief fi tting
on the bottom of the Controller’s cabinet.
2. Noting the wire colors, connect the operator cable to MOTOR-1
Terminals 1-5 on the Controller.
3. Route the cable towards the operator. Be sure to leave enough slack
in the cable to allow for the gate swing.
4. Remove the operator’s wiring access plate (see Figure 6).
5. Cut the cable to length if required, then slide the O-ring over the end
of the cable.
6. Connect the interface cable to the operator’s terminal block matching
the same colors and terminal numbers used in Step 2 (see Figure 6).
7. Replace the operator’s wiring access plate being careful to align the
O-ring below the cable clamp. The O-ring helps keep out moisture.
For dual gate installations, repeat Steps 1-7 and connect the
second operator’s cable to the MOTOR-2 5-position terminal
block in the Controller (see Figure 7). Use the strain-relief
fi tting that comes with the LRA2 kit where the cable enters
the Controller cabinet.
GATE BRACKET
BUSHING
WASHER
AND CLIP-RING
Figure 5. Mounting the Operator
5 - OPEN LIMIT
4 - COMMON (LIMIT)
3 - CLOSE LIMIT
2 - MOTOR
123 45
1 - MOTOR
MATCH TERMINAL NUMBERS
ON OPERATOR & CONTROLLER
Figure 6. Operator Cable Connections
PUT O-RING ON CABLE TO
SEAL OUT MOISTURE
O-RING
FITS
IN SLOT
MOTOR 1
MOTOR 2
123 45123 45
TRAVELER
SHAFT
LRA Linear Residential Actuator Installation Guide
MOTOR 1 TERMINALSMOTOR 2 TERMINALS
1
2
3
4
5
TO LRA ARM #1
FOR STAGGERED GATE INSTALLATIONS,
ONLY THE MOTOR 1 CONNECTION CAN BE
DELAYED ON OPENING. PLUG THE ARM TO
BE DELAYED INTO THE MOTOR 1 TERMINALS.
TO LRA ARM #2
Figure 7. Controller Cable Connections
228158 Revision X17 8-11-2011
- 5 -
5
4
3
2
1
Operator Setup (Continued)
WARNING
ALL AC ELECTRICAL CONNECTIONS TO THE POWER SOURCE AND
THE OPERATOR MUST BE MADE BY A LICENSED ELECTRICIAN
AND MUST OBSERVE ALL NATIONAL AND LOCAL ELECTRICAL
CODES.
AC Power Connection
The control box contains a power disconnect switch to turn
on and off the power available to the operator. Following
wiring specifi cations on Page 2, incoming power should be
brought into the control box and connected to the labeled
pigtails from the disconnect box. A wiring connections print
can be found on the label inside the cover of the operator.
See Figure 8 for power option examples.
Earth Ground
Install a ground rod and connect it to the control box in every
installation. A good earth ground is necessary to allow the
Controller’s built-in surge and lightning protection circuitry
to work effectively.
✓NOTE: Do not splice the ground wire. Use a single piece of solid
copper 12 AWG wire between the ground rod and the control box.
1. Install an 8-foot long copper ground rod within three feet of the
control box.
2. Use a clamp to connect a solid copper 12 AWG ground wire to the
ground rod.
3. Route the ground wire to the control box through a wiring knockout.
4. Connect the ground wire to the screw terminal located above the
115V power receptacle on the Controller’s metal chassis.
CONTROL BOX
115V POWER
RECEPTACLE
POWER KNOCKOUT
ON CABINET BOTTOM
Figure 8. Power and Ground Connections
MANUAL DISCONNECT
CAN BE USED TO
DISENGAGE
OPERATOR
CONNECT
(LOCK)
GROUND
SCREW
AC POWER MUST BE CONNECTED
BY A LICENSED ELECTRICTIAN
BRING 115V HOT, NEUTRAL, AND
GROUND INTO CONTROL BOX ANDCONNECT TO AC POWER FLYING LEADS
GREEN - GROUNDWHITE - NEUTRAL
BLACK - HOT
DISCONNECT
(UNLOCK)
Manual Disconnect
In case of a power failure or other condition, the gate can be manually
moved without action from the operator by using the manual disconnect
switch (see Figure 9).
To activate the manual disconnect switch:
1. Open the cover on the switch.
2. Insert the disconnect key (supplied with operator).
3. Turn the key clockwise 90˚.
4. Reverse the steps to re-engage the operator.
Dual Gate Stagger Delay
This feature is used for overlapping dual gates. After completing setup of
the operator, in dual gate installations use the following control to adjust
the dual gate stagger:
To delay opening of Gate 1, and delay closing of Gate 2, gently adjust
the potentiometer located on the motor board (under the small blue
removable cover) clockwise until the desired delay is reached (see
Figure 10). Do not turn more than ¾ of a turn or damage will result.
Range is 0 to 10 seconds delay.
Only Motor-1 can be delayed on open. Plug the appropriate LRA arm
into either the MOTOR-1 or MOTOR-2 terminal block to change which
gate is delayed.
Figure 9. Manual Disconnect
STAGGER DELAY ADJUSTMENT
(ON MOTOR CONTROLLER BOARD
UNDER BLUE COVER)
LESS
DELAY
MORE
DELAY
LRA Linear Residential Actuator Installation Guide
Figure 10. Stagger Delay Control
228158 Revision X17 8-11-2011
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LRA Linear Residential Actuator Installation Guide
228158 Revision X17 8-11-2011
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