Chamberlain BG 3000-B1 Installation And Operation Instructions Manual

Doc 6001287 (01-20284)

INSTALLATION AND OPERATION INSTRUCTIONS

Rev C

MODEL

BARRIER GATE OPERATOR

FOR THE

BG 3000-B1

(-68 BOARD)

TABLE OF CONTENTS

SAFETY SUMMARY..................................................................................................................1

BASIC INSTALLATION HINTS AND RULES...........................................................................2

PART 1 SITE PREPARATION.................................................................................................3

A. LOCATION AND LAYOUT .....................................................................................................................3

B. PAD AND MOUNT .................................................................................................................................4

C. PO WER WIRING....................................................................................................................................5

D. LOOP DETECTORS ..............................................................................................................................5

E. MASTER/SLAVE INTERCONNECTION (MASTER/SLAVE SYSTEM ONLY)...................................... 5

F. OTHER CONNECTIONS ....................................................................................................................... 5

PART 2 SYSTEM INSTALLATION.........................................................................................6

A. MOUNTING GATE OPERATOR............................................................................................................ 6

B. CONNECTING POWER.........................................................................................................................6

C. RUNNING INPUT WIRING.....................................................................................................................7

D. SETTING GATE OPEN DIRECTION SWITCHES S2 AND S3 .............................................................7

E. POWER UP PROCEDURE.................................................................................................................... 7

F. USING MANU AL CONTRO LS ...............................................................................................................8

G. GATE ARM INSTALLATION.................................................................................................................. 8

H. GATE ARM ADJUSTMENT FOR TYPICAL INSTALLATION................................................................9

I. LIMIT CAMS........................................................................................................................................... 9

J. GATE SENSITIVITY ADJUSTMENTS................................................................................................ 10

K. POWER FAIL OPERATION OPTION CONNECTION......................................................................... 11

L. CONNECTING INPUT WIRING...........................................................................................................13

M. SETTING GATE CONTROL SWITCH S1 AND RECLOSE TIMER POT R94..................................... 14

N. POST INSTALLATION PROCEDURES............................................................................................... 16

O. FINAL ASSEMBLY OF GATE OPERATOR......................................................................................... 18

PART 3 MODEL BG 3000-B1 OPTIONS .............................................................................19

A. LIFTMASTER LOOP DETECTOR BOARDS....................................................................................... 19

B. POWER FAIL OPERATION OPTION ..................................................................................................19

C. GATE OPERATOR ARM......................................................................................................................19

PART 4 TROUBLESHOOTING AND MAINTENANCE........................................................20

A. TROUBLESHOOTING .........................................................................................................................20

B. FAULT LIST..........................................................................................................................................24

C. FAULTS AND THEIR CAUSES............................................................................................................ 24

D. MAINTENANCE....................................................................................................................................26

APPENDIX A SYSTEM OPERATION REFERENCE ...........................................................28

APPENDIX B LIFTMASTER MODEL BG 3000-B1 PARTS LIST........................................34

APPENDIX C LIMIT CAMS ..................................................................................................36

1. REPLACING AND ADJUSTING LIMIT CAMS IN A TYPICAL INSTALLATION.................................. 36

2. REPLACING AND ADJUSTING LIMIT CAMS IN A RESTRICTED INSTALLATION.......................... 37

GLOSSARY.............................................................................................................................38

NOTICE TO CANADIAN USERS............................................................................................39

Rev C Doc 6001287 (01-20284)

TABLE OF FIGURES

Figure 1. Barrier Gate Operator Layout......................................................................................3

Figure 2. Pad and Mount............................................................................................................4

Figure 3. AC Wiring....................................................................................................................6

Figure 4. Gate Direction, Power Fail Option Switch Location. ....................................................7

Figure 5. Manual Controls, Location and Use. ...........................................................................8

Figure 6. Gate Arm Installation...................................................................................................8

Figure 7. Gate Arm Adjustment..................................................................................................9

Figure 8. Gate Sensitivity Adjustments Location. .....................................................................10

Figure 9. Control Board Wiring.................................................................................................13

Figure 10. Gate Control Switch S1 Location.............................................................................14

Figure 11. Reclose Timer Enable and Adjustment Location.....................................................15

Figure 12. Gate Operator Final Assembly................................................................................ 18

Figure 13. Setting Limit Cams For A Typical Installation. .........................................................36

Figure 14. Setting Limit Cams For A Restricted Installation......................................................37

Rev C Doc 6001287 (01-20284)

The LiftMaster Model BG 3000-B1

The LiftMaster model BG 3000-B1 Barrier Gate Operator is a full featured commercial gate operator with a
master/slave wiring capability. The BG 3000-B1 contains the following standard features:

• Dynamic motor braking limits gate overtravel.

• Alternate action OPEN/CLOSE inputs.

• Manual switch inputs override other commands.

• Adjustable reclose timer.

• Gate lock relay can be used for electromagnetic locks and CCTV cameras or

lights.

• Master-slave operation for two operators on bi-part gates and vehicle trap
gates.

• Selectable anti-tailgate function prevents two cars from entering on one open
command.

• Open Motor detec tion indicates when the motor is not drawing any current.

• Motor Overload sensing protects the gate operator from excessive motor

current.

• Senses obstructions through adjustable Peak motor current senses.

• Two separate peak motor current sense adjustments; one for upward motion

and the other for downward motion of the arm.

• Initial inrush current sense adjustment offsets initial inrush current to the
motor.

• Automatic fault Re-Try causes the gate operator to retry an operation twice
following a fault condition.

• Selectable Automatic Gate Closure feature closes the gate when power is
restored after an outage if gate is at open limit.

• Two 115 VAC accessory plugs provided.

• 24 VAC accessory power provided.

• 60:1 worm gear reduction.

• 90 degree arm rotation in less than 4.3 seconds.

• Handles any gate weight up to 10 pounds and length up to 12 feet.

• Diagnostic LEDs on controller board indicate gate operator actions and assist in

troubleshooting.

• Power Fail Operation option automatically opens(Fail Safe) or closes(Fail
Secure) the gate (user's choice) if AC power fails.

• Optional loop detector add-on boards plug into the controller board for
Interrupts, shadow and exit loops.

• Inside and outside Interrupt Loops enhance gate control and distinguish
between entering and exiting traffic.

• Optional arm for safe and long service life.
DIMENSIONS WEIGHT ELECTRICAL

Height 44” 242 Lbs. 115 VAC, Single Phase, 60 Hz., 8 amp
Width 17” (257 Lbs. with Power (A separate 20 AMP circuit is
Depth 17” Fail Operation option.) required by most codes.)

Rev C Doc 6001287 (01-20284)

SAFETY SUMMARY

It is important for everyone involved in the installation and operation of the LiftMaster model BG
3000-B1 Barrier Gate Operator reads the following warnings.

WARNING!

• A vehicle gate is a large, heavy object that is moved by an electric motor. A moving

gate can cause serious injury or death! The safety and well-being of others depends
on the installation of a safe system.

• Improper installation of a gate operator can result in a dangerous system.

• Gate operators can present serious hazards to persons in the immediate area when

not controlled in a safe manner. Choose one or more controls which together will
allow complete control of the gate. Most importantly, the gate must be able to be
stopped at all times in case of emergency, and the emergency control should be
conveniently located, clearly marked and visible.

• All controls must be kept out of the reach of small children. Serious injury or death

can result from children playing with the controls.

• All controls should be located so the person operating them can see the full area of

gate movement.

• Gate operators and associated control equipment should be installed by qualified

professional installers who should observe the following safe installation procedures:

1. Power should always be disconnected whenever installing, wiring or servicing a
gate operator. Moving chains and belts in gate operators can catch clothing or
fingers and cause severe injury.

2. Installation of wiring should comply with all local building and electrical codes.

3. All manual gate locks should be disabled to avoid damage to the gate or gate
operator should the lock become engaged after the operator is installed.

4. All operator controls and safety equipment should be tested at the conclusion of
installation to be sure they are functioning properly.

5. The operation of the gate controls and safety equipment should be reviewed with
the owner and/or end user of the automated gate system. They should also be
informed of the need to maintain control and safety equipment on a regular basis.
Safety equipment should be checked monthly to ensure it is working properly. All
installation manuals and safety information should be left with the owner.

6. Moving gates have pinch points and entrapment zones which can be extremely
dangerous to pedestrians, especially small children.

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BASIC INSTALLATION HINTS AND RULES

PLEASE READ THIS SECTION CAREFULLY BEFORE BEGINNING YOUR INSTALLATION.
The sections that follow contain detailed procedures for installation of a model BG 3000-B1 system. In

addition to these specific procedures, there are a number of general hints and rules which will help
ensure that your installation will be done correctly and efficiently. These are discussed below.

1. UNDERSTAND THE SYSTEM AND INSTALLATION SITE THOROUGHLY. The BG 3000-B1 is a
flexible and reliable gate operator system, but the quality of service depends directly on the quality of
installation. Please read these instructions carefully and study the applicable diagrams before planning
your installation. In particular, understand any site characteristics that may affect the system
installation.

WARNING

2. INSTALL PERMANENT WIRING. U.L. specifications require the BG 3000-B1 system to be

permanently wired. Refer to your local wiring code for specific information.

WARNING: Damage caused by faulty wiring is not covered by warranty.

3. GROUND THE SYSTEM. The system contains parts which may be damaged by static discharge. A

proper earth ground connected to the gate operator housing (see Figure 3) will significantly reduce the
chances of damage or improper operation. The shielding in the cables specified for all remote sensors
and controls should also be connected to earth ground at the controller end of the cable only.

To be effective, the ground connection must be made by running 12 awg copper wire to a good ground
point (e.g., an electrical panel, a metallic cold water pipe that runs into the earth, or a grounding rod at
least 10 feet in length that is driven into the earth) within 12 feet of the system. Even if you have a
good earth ground, you should try to discharge any static before handling the circuit boards.

WARNING: Damage caused by static discharge and lightning is not covered by warranty.

4. PROVIDE POWER FROM A DEDICATED SOURCE. The outlet into which you connect the Gate

Operator should be wired to its own circuit breaker. This will reduce the line noise introduced into
system power and minimize the risk of having other equipment interrupt system operation. In a
Master/Slave system, Master and Slave must each have separate circuits.

5. DO NOT OVERLOAD THE TERMINAL BLOCKS. The terminal blocks used in the gate operator are
removable and the pins are soldered into the boards. To connect your wires, remove the "head" from
the correct terminals and open the screws. Insert the wire into the correct opening on the front and
tighten the screw until the wire is held firmly. When you have made all connections for a given "head",
plug it back onto the pins designated for that terminal block.

Stranded wire must be between 16 and 24 awg. Solid wire must be between 18 and 24 awg. This is
the total thickness measurement so, if you are putting two wires in, the combined thickness must fall
within this range. NEVER try to insert more than two wires per terminal.

6. ENSURE GOOD CONNECTIONS. A light tug on the wire will tell you if the connection is secure.
When reconnecting system components, make sure all pins are straight on chips, connectors, and
terminal block heads.

7. READ THE MARKINGS CAREFULLY. The connection points are marked on the boards clearly.
Before making any connection, be sure to read the marking and check it against the corresponding
figure in these instructions so that you understand the connection you are making.

8. TRAIN YOUR CUSTOMERS THOROUGHLY. Although customer responsibility is limit ed t o proper
installation, the quality of service is determined by the care of system setup. Ensure that the customer
has a copy of this manual to guide them. It will save you and them lots of inconvenience and
aggravation later.

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A. LOCATI ON AND L AY OUT

PA RT 1

SITE PREPARATION

Figure 1. Barrier Gate Operator Layout.

NOTE

Figure 1 shows two different single gate installations. For location and layout details of Bi-Parting,
Bi-Parting Latch, Trap and Tandem gates, see Installation and Operation of Master/Slave Systems
for Series B1 Gate Operators Doc. No. 6001378, Part 1.

1. Always install the gate operator on the inside of the gate perimeter. NEVER install on the

public side of the perimeter.

2. All manual controls and activating devices should be mounted at least 6 ft. away from the gate

to provide safety.

3. Allow enough clearance around the gate and the gate operator for installation and service.

INSTALLATION NOTES

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B. PAD AND MOUNT

1. The concrete pad must be sufficient to support the gate operator and the dynamic forces

created by the moving gate. LiftMaster recommends a pad 20” wide by 22” long by 20” deep.

2. Four anchor bolts are required to secure the gate operator to the pad. The mounting holes in

the gate operator are 5/8” in diameter. L-bolts ½” x 6“ are recommended.

3. The pad should be level and about 4” above grade to prevent water entrance. Allow concrete

to set at least two days before installing gate.

4. Be sure to provide access for wiring conduits. In Master/Slave systems, remember to include

conduit stubs for separate inputs (if any) and for the Master/Slave connection cable between
gate operators. For more information, see Installation and Operation of Master/Slave Systems
for Series B1 Gate Operators Doc. No. 6001378, Part 1.

NOTE: The only access area for the conduit stub is at the center of the pad, indicated as the
shaded area in Figure 2 Top View. Allow a minimum three-foot-long conduit stub.

Figure 2. Pad and Mount.

INSTALLATION NOTES

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C. POWER WIRING

1. Provide a separate conduit stub for the AC power.

2. Each gate operator requires a 115 VAC 20 AMP single phase circuit. NOTE: Master and

Slave units each require separate circuits to prevent false overcurrent faults.

3. Wiring must comply with the local Electrical Code for operating a ½ HP motor (suggest 12

AWG for up to 300’ and 10 AWG for up to 500’ long wire runs).

4. Be sure to pull a ground wire in the conduit for the connection to the gate operator. Do not rely

on metallic conduit for earth ground.

D. LOOP DETECTORS

1. The gate operator has a shelf that can support non-LiftMaster loop detector electronics. Power

for the loop detector can come from the auxiliary 115 VAC plugs in the gate operator or from
the 24 VAC provided by the gate operator control board.
NOTE: The auxiliary plugs have power regardless of the unit power switch setting.

2. Conduit provisions should be made for the “loop” wire entrance to the loop detector.

3. Shelf space on systems without the Power Fail Operation Option is about 13" x 7" x 32" high

4. Use 16-24 AWG stranded or 18-24 AWG solid wire.
NOTE: Optional LiftMaster-supplied loop detector add-on boards are available, both pre-installed

and for installation in the field. See Part 4, BG 3000-B1 Options.

E. MASTER/SLAVE INTERCONNECTIO N (MASTER/SLAVE SYSTEM ONLY)

1. A conduit between the Master and Slave units should be provided for the Master/Slave

interconnection cable.

2. Two shielded twisted pair wire 16 AWG to 24 AWG will be connected between the two units at

TB5 on the controller board.

NOTES: 1. See Installation and Operation of Master/Slave Systems for

Series B1 Gate Operators Doc. No. 6001378

2. Do not run the Master/Slave cable and AC power wires in the same conduit.

3. Master/Slave interconnection cable should not exceed 3000 feet in length.

F. OTHER CONNECTIONS

1. Provisions should be made for conduit entrance into the gate operator for external

activating devices such as key switches, telephone entry systems, loops, etc.

2. Wire size requirement: 16-24AWG stranded or 18-24AWG solid wire should be used.

INSTALLATION NOTES

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SYSTEM INSTALLATION

A. MOUNTING GA TE OPERATOR

For safety reasons, the Power Fail Operation Option is shipped with the battery unconnected to
the system. Do not connect the battery until all other installation and alignment
procedures have been completed. Failure to observe this warning may result in the Power
Fail Operation Option moving the gate at unexpected moments.

To avoid injury, always turn off the unit power switch before working on gate.

After attaching the conduits to the control box, make sure that: a) the conduits fold to the right
during control box closure; and b) the control box swings freely open or closed.

1. Mount the cabinet on the cement pad using the previously installed anchors. Be sure the

operator mounting is level and square, and that the gate operator access door faces away
from the driveway (see Typical Installation, Figure 1).

2. Slightly loosen the mounting screws of the control box clear plastic cover. Slide the

cover out.

3. Swing the control box open fully to allow connection of the conduits. Run the conduits

through the bracket in the lower back of the control box.

4. Cut excess conduit and use 90 degree conduit fittings to attach conduits to the control box.

Note: the input power conduit need not go through the bracket and can be attached to the
control box directly.

PA RT 2

WARNING

WARNING

B. CONNECTING POWER

Ensure that the AC power circuit breaker is turned off before wiring power to the switchbox.

Run power cables through the conduit to Gate Operator, then connect wires to the switch box (see
Figure 3).

1. Wire nut the hot (black) wire to the black pig tail.

2. Wire nut the neutral (white) wire to the white pig tail.

3. Wire nut the ground (green) wire to the green pig tail.

4. Dress all wiring inside the switch box and install cover.

CAUTION

Figure 3. AC Wiring.

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C. RUNNING INPUT WIRING

1. Run wires from input components and Master/Slave conduits into control box.

2. For Master/Slave wiring, refer to Installation and Operation of Master/Slave Systems for

Series B1 Gate Operators Doc. No. 6001378.

WARNING

Route but do not connect input wires at this time. If inputs are connected now, the gate operator
may activate at random during installation, potentially injuring installation personnel.

D. SETTING GATE OPEN DIRECTION SWITCHES S2 AND S3

Figure 4. Gate Direction, Power Fail Option Switch Location.

1. Gate opening direction is set by switch S2, located on the control board. The switch is sensed

only on power up, so it should be set when the power is off.

2. Ensuring power is off, set switch S2 to the left if the cabinet access door faces away from the

driveway (typical installation), or to the right if the access door faces the driveway (restricted
installation).

If the system was ordered with the Power Fail Operation option:

3. The power failure gate opening direction is set by switch S3, located next to switch S2 on the

control board. Set switch S3 to left to fully open (Fail Safe) or to right to fully close (Fail
Secure) the gate during power outage (typical installation).

E. POWER UP PROCEDURE

1. Turn on circuit breaker that provides power to gate operator.

2. On Manual Input Terminal TB2, connect the STOP terminal to the COMMON terminal (see

Figure 5).

3. Turn on gate operator power switch and verify that the row of LEDs on the right side of the

controller board all turn on, then turn off sequentially, starting from the bottom. The only LEDs
that should remain on are Power ON, MAGLOCK, and CLOSE LIMIT or OPEN LIMIT, if one of
the limit switches are engaged.

NOTE: If the LEDs do not follow this pattern, the controller board may not be working

correctly. Stop installation and call LiftMaster Technical Support for assistance.

Rev C Doc 6001287 (01-20284) 7 of 40

F. USING MANUAL CONTROLS

Figure 5. Manual Controls, Location and Use.

If necessary, use the manual controls on Manual Input Terminal TB2 (OPEN, CLOSE, and STOP,
as shown in Figure 5), to move the gate arm during system installation.

• To open the gate: connect the OPEN and STOP terminals to the COMMON terminal.

• To close the gate: connect the CLOSE and STOP terminals to the COMMON terminal.

• To stop the gate: disconnect the STOP terminal from the COMMON terminal.

If the STOP terminal is disconnected from the COMMON terminal, the gate is prevented
from moving and no command will affect the gate.

IMPORTANT NOTE

G. GATE ARM INSTALLATION

1. ARM FABRICATION

1. Use 1" x 6" clear pine or redwood (not supplied).

2. Cut arm to the desired length (up to 12 feet), then taper to dimensions shown in Figure 6.

Tapering the arm reduces weight and reduces warping.

3. Using the arm clamp as a template, drill four 1/2" diameter holes in the wide end of the arm.

4. Finish the arm using an exterior grade paint. Add striping with paint or tape.

Figure 6. Gate Arm Installation.

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CAUTION

The total weight of the gate arm must not exceed ten (10) pounds. The lighter and/or shorter the
gate arm, the longer the life of the gear reducer and motor.

1. ARM ATTACHME NT

1. Secure the hub flange to the output shaft using the two set screws and the key from the

accessory kit.

2. Align the holes in the gate arm with the attachment holes on the hub flange and arm clamp.

3. Install and tighten the four supplied hex bolts, lock washers and hex nuts (see Figure 6).

NOTE: Make sure the arm clamp is oriented as shown in the figure.

H. GATE ARM ADJUSTMENT FOR TYPICAL INSTALLATION

Although preset at the factory, the turnbuckle may have to be adjusted to ensure the gate arm is
level. If required, adjust the turnbuckle as follows:

1. Make sure the unit power switch is off.

2. Rotate the gearbox pulley by hand until the crank arm is in parallel with the turnbuckle shaft

at its lowest point of travel (see Figure 7).

3. If the gate arm is not level, loosen both turnbuckle jam nuts and rotate the shaft until the gate

arm is parallel with the ground, then retighten the two jam nuts.

Figure 7. Gate Arm Adjustment.

I. LIMIT CAMS

0

Gate operator limit cams are factory adjusted for 90

arm swing and are not to be adjusted in the

field except during limit cam or limit switch bracket replacement.

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J. GATE SENSITIVITY ADJUSTMENTS

The gate operator monitors both average and peak motor current. When the gate encounters an
obstruction, the gate operator senses the change in motor current and stops or reverses the gate.
Three sensitivity adjustments are factory-set for most installations:

• Right gat e motion (R78) @ 11:00 o'clock

• Left gate motion (R81) @ 11:00 o'clock

• Inrush current (R119) @ 9:00 o'clock

NOTES: The Overload adjustment (R71) is factory set only. Do not adjust.
If your installation requires different sensitivity adjustments, use the following procedures:
♦ For Typical Installation, set switch S2 to “Open to Left” position and use the “Typical

Installation" adjustment procedures below. For Restricted Installation, set S2 to “Open to
Right” position and use the “Restricted Installation" adjustment procedures.

♦ The minimum sensitivity is full clockwise and maximum sensitivity is full counter clockwise.

These adjustments must be made while the gate is in motion.

♦ Before starting the adjustments, verify that the Left and Right reverse pots are set fully

clockwise, and the Inrush pot is set to the 9 o’clock position (see Figure 10).

IMPORTANT: Current flow varies with temperature. Do not tune the sensitivity measurements too

finely, or they may change with the time of day or seasons.

♦ Make all adjustments in the order listed.

Figure 8. Gate Sensitivity Adjustments Location.

1. TYPICAL INSTALLATION ADJUSTMENTS

"Left Reverse" Adjustment (R81)

1. Initiate opening the gate.

2. Wait 1 to 2 seconds, then lightly "tug” against the edge of the gate to simulate an obstacle.

3. If the gate does not stop, reclose the gate and adjust the pot slightly counterclockwise.

4. Repeat steps 1-3 until the gate stops when tugged and has the desired sensitivity.

"Right Reverse" Adjustment (R78)

1. Open the gate fully, then initiate closing the gate.

2. Wait 1 to 2 seconds, then lightly "bump" the leading edge of the gate to simulate an obstacle.

3. If gate does not stop or back up, reopen the gate and adjust the pot slightly counterclockwise.

4. Repeat steps 1-3 until gate stops or backs up when bumped and has the desired sensitivity.

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2. RESTRICTED INSTALLATION ADJUSTMENTS

"Right Reverse" Adjustment (R78)

1. Initiate opening the gate.

2. Wait 1 to 2 seconds, then lightly "tug” against the edge of the gate to simulate an obstacle.

3. If the gate does not stop, reclose the gate and adjust the pot slightly counterclockwise.

4. Repeat steps 1-3 until the gate stops when tugged and has the desired sensitivity.

"Left Reverse" Adjustment (R81)

1. Open the gate fully, then initiate closing the gate.

2. Wait 1 to 2 seconds, then lightly "bump" the leading edge of the gate to simulate an obstacle.

3. If the gate does not stop or back up, reopen the gate and adjust the pot slightly

counterclockwise.

4. Repeat steps 1-3 until the gate stops or backs up when bumped and has the desired

sensitivity.

3. INRUSH CURRENT ADJUSTMENT (R119)

1. Turn the pot fully counterclockwise.

2. Initiate opening the gate.

3. If the gate stops due to a fault condition, slightly adjust the pot clockwise.

4. Repeat steps 2 and 3 until the gate cycles without a fault.

5. Open the gate fully, then initiate closing gate.

6. If the gate stops or backs up due to a fault condition, slightly adjust the pot clockwise.

7. Repeat steps 6 and 7 until the gate cycles without a fault and has the desired sensitivity.

K. POWER FAIL OPERATION OPTION CONNECTION
a) Power Fail Operation Option Connection

CAUTION

Perform the next step (battery hookup) with care. Interchanging battery wires temporarily opens
the resettable fuse on gate operator board, disabling the power fail option.

To ensure a safe installation, the gate operator is shipped with the battery partially disconnected
from the Power Fail Option electronics. To enable this option:

• Connect white/red wire of option harness to positive (+) battery terminal.

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b) Power Fail Operation Option Test

• The following procedures require turning main power to the gate operator off and on at its

dedicated circuit breaker. DO NOT shut off the Gate Operator Power switch unless
specifically directed by the procedure, since this will shut off everything, including the
Power Fail Operation option.

• Because the battery may not be fully charged at the time of the test, we strongly suggest

moving the gate only one foot when performing the power fail test.

1. Set Power Fail switch S3 to the same position as switch S2 (Figure 4).

2. Turn on gate operator power switch.

3. Using the manual controls (Figure 5), initiate gate opening, then stop the gate about one

foot short of its fully open position.

4. Turn off main power to the gate operator. After about one minute the gate should start

opening and stop at its fully open limit.

5. Turn on main power to the gate operator.

6. Set Power Fail switch S3 to the opposite position.

7. Using the manual controls, initiate gate closing, then stop the gate about one foot short of its

fully closed position.

8. Turn off main power to the gate operator. After about one minute the gate should start

closing and stop at its fully closed limit.

9. Turn on main power to the gate operator.

10. Set Power Fail switch S3 to the direction you desire the gate to move after a power outage.

NOTES:

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L. CONNECTING INPUT WIRING

Figure 9. Control Board Wiring.

IMPORTANT: See NOTES, next page, before proceeding.

1. Wire all external control devices to their connections on the control board as shown.

See Appendix A for details on how each control input affects the gate operator.

2. Connect the Master/Slave interconnect cable. See Installation and Operation of

Master/Slave Systems for Series B1 Gate Operators Doc. No. 6001378.

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NOTES

1. Disconnecting the STOP terminal from the COMMON terminal stops the gate and prevents all

commands from having any effect. Manual Open does not activate the Reclose Timer.

2. If gate(s)are used for bi-directional traffic, the Exit Loop should be a directional loop detector.

3. Inside and Outside Interrupt Loops:

♦ For maximum safety, Inside and Outside Interrupt loops require separate loop detectors.
♦ If only one loop detector is used, the Outside loop must also be connected to the Inside

loop detector.

♦ To enhance system safety in Bi-Parting and Bi-Parting Latch Master/Slave systems, the

Interrupt loops, Shadow loops and Interrupt Bar switches may be connected to both gates.
If this is done, when connecting the two control boards, do not interchange input and
common terminal s. If terminals are interchanged, inputs will not be detected and controller
boards may be damaged. For more information, see Installation and Operation of
Master/Slave Systems for Series B1 Gate Operators Doc. No. 6001378

M. SETTING GATE CONTROL SWITCH S1 AND RECLOSE TIMER POT R94

NOTE: For complete details on controls, indicators adjustments and inputs, see Appendix A.

1. GATE CONTROL SWITCH (S1)

Figure 10. Gate Control Switch S1 Location.

SLIDE ACTION When used with ATG, this switch controls several gate operator features:
(S1-1) Inside Interrupt Loop: four different modes are selectable:

SLIDE and ATG OFF: Loop activation prevents the gate from opening or closing. If

gate is moving, Loop activation stops the gate. When the Loop clears, the gate
resumes its course.
SLIDE only ON: Loop activation prevents the gate from closing. If gate is closing,

Loop activation opens the gate and starts the Reclose Timer, if timer is ON.

ATG only ON: Loop activation prevents the gate from opening or closing. If gate is
closing, a Loop activation stops the gate. When the Loop clears, the gate resumes
closing. If the gate is opening or fully open, as soon as the Loop clears, the gate
immediately begins closing to discourage tailgaters.
SLIDE and ATG ON: Loop activation prevents the gate from closing. When the Loop
clears, the gate resumes closing. If gate is opening or fully open, as soon as the
Loopclears, the gate immediately begins closing to discourage tailgaters.
Dynamic Braking: When SLIDE is ON, gate brakes whenever it stops.

When SLIDE is OFF, gate brakes only at open or close limit.

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TIMER Sets the Reclose Time r to OFF (left) or ON (right). When ON, the timer control s
(S1-2) how long the gate waits at the open limit before closing. The Reclose Timer can be

set from 0-250 seconds by adjusting the Reclose Timer pot (R94). During a power
outage, if the gate is fully open and TIMER is ON, the Reclose Timer starts after the

restoration of power, causing the fully open gate to close automatically.

RETRY Sets the Retry function to OFF (left) or ON (right) . When ON, if the ga te me ets

(S1-3) an obstacle, a closing gate reverses and an opening gate stops, waits 30 seconds,

then tries to resume. The gate will re-try twice before it faults out.

ATG Sets Anti-Tailgate function to OFF (left) or ON (right). The Anti-Tailgate feature helps
(S1-4) prevent two cars from entering on one OPEN command.

MASTER In conjunction with the TRAP switch, sets configuration for master/slave system.
(S1-5)

TRAP In conjunction with the MASTER switch, sets configuration for master/slave system.
(S1-6)

2. RECLOSE TIMER ENABLE (S1) AND SET (R94)

Figure 11. Reclose Timer Enable and Adjustment Location.

The Reclose Timer pot (R94) is adjustable from 0 to 250 seconds. Turning the pot clockwise
increases the reclose time. NOTE: Pot in figure is set to 0 seconds.

1. To enable the Timer, set switch S1-2 (TIMER) to the ON (right) position.

2. Turn the pot fully counterclockwise.

3. Open the gate. Gate should close almost immediately when it reaches the open limit.

4. Adjust the pot slightly clockwise.

5. Open the gate. Note the delay between the gate reaching the open limit and starting to

close.

6. Repeat steps 4 and 5 until the desired reclose time is set.

Rev C Doc 6001287 (01-20284) 15 of 40

N. POST INSTALLATION PROCEDURES

1. Setup

1. Turn on the main power at the gate operator's circuit breaker.

2. Verify that switch S2 (the Gate Open Direction switch) is set to the correct position.

3. Turn on the unit power switch.

2. Manual inputs

1. Verify that Manual Open fully opens the gate and that the open limit switch stops the gate.

2. Verify that Manual Close fully closes the gate and that the close limit switch stops the gate.

3. Verify that Manual Stop stops the gate.

Note: If the gate stops due to a Reverse Fault, readjust the gate sensitivity pots.

3. Mechanical

Use the Manual Input commands to verify that:

1. The gate swings open and closed smoothly.

2. There is no squeak or vibration in the gate when it is moving .

3. There is no belt slippage when the gate moves or stops.

4. Both gates open and close at the same time (Bi-Parting gates only).

4. Gate sensitivity

1. Left/Right Reverse sensitivity:

Apply a bump to the opening and closing gate and verify that the gate stops or reverses.

2. Inrush (Gate response time) :

Apply a bump to the gate as it initiates opening and closing and verify that the gate
responds to the bump within a second.

5. Maximum Retry Count

1. If you want the gate to resume operation automatically up to 2 times, 30 seconds after a

Fault, set RETRY on switch S1 to ON.

2. If you do not want the gate to resume automatically after a Fault, set RETRY on switch S1 to

OFF.

3. Give the opening gate a quick bump to generate a fault and verify retry operation.

6. Entry inputs

1. Activate the CYCLE input (entry system), RADIO input (radio transmitter), and EXIT Loop

input (driving over the exit loop) and verify that they fully open the gate. If Reclose Timer is
ON, it will close the gate.

2. Activate the FIRE input (fire department switch) and verify that the gate fully opens and then

closes immediately. If Reclose Timer is ON, it will close the gate.

Rev C Doc 6001287 (01-20284) 16 of 40

7. Alternate Action

1. If you want the CYCLE input (Entry system) or RADIO input (Transmitter) to both open and

close the gate, on switch S1 set TIMER to OFF and ATG to OFF.

2. Activate the CYCLE command, wait until the gate is fully open, then activate the CYCLE

command again. The gate should close, verifying Alternate Action operation.

Note: If you select Alternate Action, you cannot use ATG = ON and TIMER = ON in

procedures 8 and 9 that follow.

8. Reclose Timer

1. If you want a fully open gate to automatically close after a period of time, on switch S1, set

TIMER to ON and adjust Reclose Timer pot R94 to set the time period.

2. If you don't want the gate to close automatically, on switch S1, set TIMER to OFF.

3. Activate any entry command (except Manual OPEN) to open the gate and verify the Reclose

Timer operation.

NOTE: Reclose Timer is not functional when the Manual Open command is used.

9. Inside Interrupt Loop and ATG (when exiting)

1. If you want the gate to stop when a vehicle drives onto the Interrupt Loop and to restart

when the vehicle drives off the Interrupt Loop, on switch S1, set SLIDE and ATG to OFF.

2. If you want the gate to stop when a vehicle drives onto the Interrupt Loop and to close when

the vehicle drives off the Interrupt Loop, on switch S1, set SLIDE to OFF and ATG to ON.

3. If you want a closing gate to open when a vehicle drives on the Interrupt Loop, on switch S1,

set SLIDE to ON and ATG to OFF.

4. If you want a closing gate to stop when a vehicle drives on the Interrupt Loop and an

opening or closing gate to close when the vehicle drives off the Interrupt Loop, on switch S1,
set SLIDE and ATG to ON.

5. Activate the CYCLE command, drive over the Interrupt Loop, and verify its operation.

10. Interrupt Bar

While the gate is opening , push on the Interrupt Bar. The gate should stop.

11. Maglock

Verify that the maglock activates when the gate is fully closed.

12. Automatic Gate Closure

1. To automatically close a fully open gate after power is restored, on switch S1, set TIMER to

ON.

2. Open the gate fully, then cycle the unit power switch to verify Automatic Gate Closure

operation.

13. Power Fail Option

Verify that switch S3 (Power Fail Open Direction switch) is set to the desired position
(Figure 4).

Rev C Doc 6001287 (01-20284) 17 of 40

O. FINAL ASSEMBLY OF GATE OPERATOR

Figure 12. Gate Operator Final Assembly.

1. Install gate operator top cover and secure with two wing nuts.

2. Swing hinged control box into cabinet and secure in place with hardware provided.

3. Install clear cover on control box and secure with the four screws provided.

4. Make sure that gate operator unit power switch is turned on.

5. Install gate operator cabinet access door and lock.

6. Cycle the gate to ensure it is operating properly.

Rev C Doc 6001287 (01-20284) 18 of 40

PA RT 3

MODEL BG 3000-B1 OPTIONS

A. LIFTMASTER LOOP DETECTOR BOARDS

The model BG 3000-B1 has connectors for four LiftMaster-supplied loop detector add-on boards. These
boards interface with Interrupt and Exit loop sensors, which simply plug into the control board. The add-on
boards can be ordered pre-installed, or can be installed in existing model BG 3000-B1 units.

B. POWER FAIL OPERATION OPTION

The LiftMaster Power Fail Operation Option may be ordered pre-installed in new units, or can be purchased
separately for installation in LiftMaster gate operator systems in the field. The Power Fail kit includes a DC
motor, belt, battery, battery support bracket assembly (includes bracket, 3 control relays, rectifier and wire
harness) and mounting hardware. Features of the Power Fail Option are as follows:

• The Power Fail Operation system fully opens (fail safe) or closes (fail secure) the gate (User's

choice) one minute after a power outage. The gate will remain open or closed until AC power is
restored.

• When AC power is restored, the battery is charged up to its full potential, then continuously trickle

charged. Recharging takes from one to five hours, depending on the weight of the gate and how far
it moved during the outage. The age of the battery also increases the battery charging time.

NOTE: Battery capacity decreases over time. Battery should be replaced every two or three years.

• The charging section and controls for the Power Fail Operation are located on the control board.

• The motor sensing potentiometers (Right reverse, Left reverse, and Inrush) on the Gate Operator

board may require readjustment if the Power Fail Operation option is installed in the field.

• Gate speed may be slightly reduced with the Power Fail Operation option installed.

During a power outage, all Gate Operator safety features are
disabled and only the limit switches stop movement of the gate.

C. GATE OPERATOR ARM

• The standard arm is 12 feet long and weighs 10 pounds. It is tapered to reduce weight and to

prevent warping, and is painted white with black striping to enhance its visibility.

• An optional articulated arm is available for installations with limited overhead space.

IMPORTANT NOTE

Rev C Doc 6001287 (01-20284) 19 of 40

PA RT 4

TROUBLESHOOTING AND MAINTENANCE

A. TROUBLESHOOTING

This section is designed to help you troubleshoot your unit(s) with a minimum of effort. Directly below are
some hints to help you test, then a list of problems in order of most severe to least. Next comes a quick­reference list of faults and how to clear them, and then a list of faults and their causes.

Testing Control Board inputs: To test an input, connect the input terminal to the COMMON
terminal on the Control Board and verify that its LED turns on momentarily. Normally, the Close
limit switch and Maglock LED's are on if the gate is fully closed, and Open limit switch and
Reclose Timer LED's are on if the gate is fully open. The Power ON and Manual STOP LED's
are always on.

Low input AC voltage: The voltage across connector J1 pins 1 (red wire) and 3 (white wire)
on the Control Board must measure 100VAC to 130VAC.

CAUTION HIGH VOLTAGE. Measure with care.

Fault Causes: Refer to the end of trouble shooting section.

1. OPERATOR IS DEAD

When the unit power switch is cycled, no LED turns on.

1. The main circuit breaker is off.

2. The unit power switch is off.

3. The input power connector is not connected securely to the Control Board.

4. Low input AC voltage.

5. Bad Control Board.

2. OPERATOR DOES NOT RUN

When the unit power switch is cycled, LED's blink simultaneously or turn on randomly:

1. Low input AC voltage.

2. The processor was installed improperly into Control Board by the installer.

3. Bad Control Board.

When the unit power switch is cycled, all LED's turn on and off (except Power On) at the
same time:

1. On Manual Input Terminal TB2, the STOP terminal is disconnected from the COMMON

terminal.

2. An input is continuously activated (Stuck).

3. Low input AC voltage.

4. Bad Control Board.

When the unit power switch is cycled, all LED's (except Power On) turn on at the same
time and off one after another with the bottom LED turning off first (normal power up).

1. An input is continuously activated (stuck).

2. Both limit switches are stuck closed.

3. Stalled motor.

Rev C Doc 6001287 (01-20284) 20 of 40

3. MOTOR DOES NOT RUN

Motor is dead:

1. The resettable motor thermal overload switch has popped.

2. The interconnecting cable between the motor and the control board is disconnected.

3. Bad control board.

4. Bad motor.

Motor is stalled:

1. Frozen motor or gearbox.

2. V-belt is too tight.

3. Gate is too heavy.

4. THE CONTROL BOARD RESETS RIGHT AFTER GATE STARTS MOVING

1. Low AC voltage.

2. Inadequate and undersized power wiring between the main circuit breaker and the gate

operator.

5. GATE STOPS IMMEDIATELY AFTER IT STARTS

1. A Fault has occurred.

Mostly in cold weather or mornings :

2. A Fault has occurred; Inrush pot adjustment is set too low.

Power Fail Option was installed recently:

3. Gate sensitivity adjustments were not reset after installation of the Power Fail Option.

4. A Fault has occurred.

6. GATE STOPS A FEW SECONDS AFTER IT STARTS

1. Stuck limit switch.

2. A Fault has occurred.

7. GATE STOPS WHILE OPENING OR REVERSES WHILE CLOSING

A Fault has occurred.

8. OPENING GATE STOPS WHEN A VEHICLE APPROACHES THE GATE

SLIDE ACTION on switch S1 is set to off, causing the Interrupt loop to stop the gate.

9. GATE OPENS BUT DOES NOT CLOSE

1. Reclose Timer is OFF.

2. One of the inputs is continuously activated (a stuck input).

3. Entry system is connected to the Manual Input by mistake.

Rev C Doc 6001287 (01-20284) 21 of 40

10. GATE DOESN'T STOP AT THE LIMIT

1. Limit cams are out off adjustments.

2. Limit switch cable is disconnected either from the control board or the limit switches.

3. Bad limit switch.

11. GATE IS TOO SLOW

1. Low input AC voltage

2. Hardened or frozen gate hinges.

3. Slipping belt.

12. GATE DOESN'T STAY OPEN/CLOSED WITH MANUAL/FIRE INPUTS

1. Manual inputs or Fire were only activated momentarily not continuously.

13. GATE DOES NOT CLOSE AUTOMATICALLY

1. Reclose timer setting is OFF.

2. The entry system is connected to Manual open by mistake.

3. An input is continuously activated (stuck ).

14. OPERATOR DOESN'T RESPOND TO COMMANDS FOR A MINUTE

1. A fault has occurred and Retry is set to OFF.

15. ALTERNATE ACTION DOES NOT WORK

1. ATG and Reclose Timer are ON.

2. Entry system is connected to the Manual Input by mistake.

16. GATE DOES NOT OPEN TO THE CORRECT DIRECTION

1. The power was not cycled after changing the setting of switch S2.

2. Limit switches are miswired.

17. AN OPEN GATE DOES NOT CLOSE AT POWER UP

1. An input is continuously activated (Stuck).

2. The gate was not on the open limit switch when the power went out.

3. TIMER on switch S1 is set to OFF.

18. GATE DOES NOT MOVE AFTER POWER OUTAGE

1. Bad Power Fail Option battery.

2. Miswired DC motor inputs.

3. Bad connection between the Power Fail Option harness connector and the Control Board.

4. Power Fail Option Open direction (switch S3) is not set to the correct position.

5. Battery is connected backwards, causing resettable fuse on the control board to open.

Rev C Doc 6001287 (01-20284) 22 of 40

19. POWER FAIL OPTION WORKS, BUT GATE DOESN'T STOP AT LIMIT

1. Miswired DC motor inputs.

2. Bad Power Fail Option harness.

20. BATTERY DOESN'T RECHARGE WITHIN 4 TO 5 HOURS AFTER USE

1. Old or bad battery.

2. Bad harness.

3. Bad Control board.

21. POWER FAIL OPTION MOVES THE GATE TOO SLOWLY

1. Old or not fully charged battery.

2. Frozen gearbox.

3. Slipping belt.

4. Belt is too tight.

22. THERE IS SLACK OR PLAY IN THE GATE ARM

1. The hardware interconnecting the arm to the gate operator is not tight.

2. Bad gearbox.

23. ATG (ANTI-TAILGATE) DOES NOT WORK

1. The ATG setting on switch S1 is OFF.

2. Entry system is connected to Manual Open by mistake.

3. Interrupt loop or loop detector is not working properly.

24. INTERRUPT LOOP DOES NOT ACT PROPERLY

1. Improper SLIDE and ATG settings.

2. Bad loop sensor or loop detector.

3. Bad connection between the loop sensor, loop detector and the Control Board.

25. MAGLOCK DOES NOT WORK

1. Bad connection between Maglock, its power supply and the Control Board.

2. Bad Control Board( relay on the Control Board does not close).

3. Bad Maglock or Maglock power supply.

4. Large gap between gates.

26. MASTER/SLAVE SYSTEM

Units work as stand-alone:

1. Miswired or disconnected Master/Slave interconnect cable.

2. Improper Master/Slave switch S1 setting.

3. Bad control board.

Units are not synchronized:

Improper switch S1 Master/Slave settings.

One gate braking to stop causes a fault in the other (moving) gate:

1. Both units are wired to the same circuit breaker.

2. Undersized power wires.

Rev C Doc 6001287 (01-20284) 23 of 40

B. FAULT LIST

The following conditions can cause a fault in the BG 3000-B1 gate operator system:

1. Interrupt Bar activation.

2. Average motor overcurrent (overload) caused by an excessive motor current.

3. Instantaneous motor overcurrent (left/ r ight r evers e sense) due to an impact on the gate.

4. Maxi mum motor run t ime exceeding 75 seconds.

5. Inoperative motor caused by an open motor winding, broken or unconnected input motor
wires, or thermal overload.

6. Limit switch staying closed when gate is supposed to move, caused by a broken V-belt,
defective limit switch, or defective cams.

Faults 1, 2 and 3 may be cleared at any time by the following, if Fault Re-Try is ON:

• All open commands (Open, Radio, Exit, Fire)

• Manual commands (Open, Close, Stop)

Faults 1, 2 and 3 may be cleared at any time by the following, if Fault Re-Try is OFF:

• Fire command

• Manual commands (Open, Close, Stop)

• All other commands must wait 60 seconds to clear these faults.

Faults 4, 5 and 6 may be cleared at any time by the following:

• All open commands (Open, Radio, Exit, Fire)

• Manual commands (Open, Close, Stop)

C. FAULTS AND THEIR CAUSES

1. IF FAULT AND OVERLOAD LED’S ARE TURNED ON

1. OVERLOAD ajustment is set too low (factory setting is at the 3:00 o’clock position).

2. Bad Control board.

3. Bad motor.

2. IF FAULT AND REVERSE LED’S ARE TURNED ON

1. REVERSE or INRUSH adjustment is set too low.

2. The gate is blocked by an object.

3. Frozen motor or gearbox.

4. The Maglock does not disengage from the gate at the start of gate opening.

5. Power Fail option was installed without readjusting the gate sensitivity adjustments.

6. A sudden increase in input power.

7. Bad Control board.

8. Belt is too tight.

Rev C Doc 6001287 (01-20284) 24 of 40

3. IF MAX RUN TIME LED IS TURNED ON ONLY

1. Limit cams do not engage the limit switches.

2. Broken belt.

3. The belt slips during gate movement.

4. Limit switch cable is disconnected.

5. Bad limit switch.

6. Stalled motor.

4. IF OPEN MTR LED IS TURNED ON ONLY

1. The motor thermal overload switch is popped.

2. The wires connecting the motor to the Control Board are disconnected

3. Bad motor.

5. IF FAULT LED IS TURNED ON ONLY

1. A limit switch is stuck closed.

2. The belt was broken before the start of the gate movement.

3. Interrupt Bar switch is activated.

4. Stalled motor at open or close limit.

Rev C Doc 6001287 (01-20284) 25 of 40

D. MAINTENANCE

WARNING

To avoid injury, always turn off the unit power switch before working on gate.

Regularly performance of preventive maintenance is essential for reliable system operation because it
corrects small problems before they turn into emergencies. LiftMaster recommends performing
preventive maintenance every 6 to 12 months, depending upon gate usage.

• If the gate is installed in a private residence or small apartment house where usage is not
severe, yearly preventive maintenance is acceptable

• If the gate is installed in a high-traffic application, semi-annual preventive maintenance is
essential.

PREVENTIVE MAINTENANCE TASKS

1. Gate: must swing freely without any impediment. Tighten set screws if loose !. Check hub,
grease if necessary.

2. Limit switches: contacts must bounce back rapidly when they are pressed and released.

3. Belt: Check for wear and tension (20 to 25 lbs.). Adjust the AC motor up or down to set proper
tension.

4. Pulleys: must all line up and be firmly secured to their shafts. Tighten set screws if loose !.

5. Gear Box: Check for no oil leakage around the bushings. Do not oil gearbox.

6. Control board: Check for water damage or burned spots. All connectors secured to the board.

7. Wiring: Check all wirings for any insulation damage. Check for loose wire connections.

8. No Rust: Check for rust throughout the unit. Check corners for water entrapment.

9. Fire Open: Activate Fire department switch to verify emergency gate opening.

10. Gate Sense: Check for the gate sensitivity (refer to Part 2, System Installation, paragraph J,
Gate Sensitivity Adjustments).

11. Power Fail Option: Check for proper operation (refer to Part 2, System Installation, paragraph
L, Power Fail Option Connection, item B, Power Fail Option Operation Test).

NOTES: !: To prevent loosening, LOCTITE threadlocker 242 is applied.

Rev C Doc 6001287 (01-20284) 26 of 40

The following table was provided to help you keep a record of the maintenance schedule. Write the inspection
date in the left-hand box and check (✓) the boxes across as you perform your maintenance procedures.

MAINTENANCE SCHEDULE TABLE

Date Gate

Arm

Limit

Switches

Belt Pulleys Gear

box

Control

Board

Wiring No Rust Fire Open Gate Sense PFO

Rev C Doc 6001287 (01-20284) 27 of 40

APPENDIX A

SYSTEM OPERATION REFERENCE

CONTROLS, INDICATORS, INPUTS AND ADJUSTMENTS

For control and indicator locations, refer to the figure below. For detailed explanations of the Gate Operator's
various, controls, indicators, inputs and adjustments, refer to the pages that follow.

Rev C Doc 6001287 (01-20284) 28 of 40

CONTROLS
SWITCH S1 (OFF/ON DIP SWITCH)

SLIDE ACTION When used with ATG, this switch controls several gate operator features:
(S1-1) Inside Interrupt Loop: four different modes are selectable:

SLIDE and ATG OFF: Loop activation prevents the gate from opening or closing. If

gate is moving, Loop activation stops the gate. When the Loop clears, the gate
resumes its course.
SLIDE only ON: Loop activation prevents the gate from closing. If gate is closing,
Loop activation opens the gate and starts the Reclose Timer, if timer is ON.
ATG only ON: Loop activation prevents the gate from opening or closing. If gate is
closing, a Loop activation stops the gate. When the Loop clears, the gate
resumes closing. If the gate is opening or fully open, as soon as the Loop clears,
the gate immediately begins closing to discourage tailgaters.
SLIDE and ATG ON: Loop activation prevents the gate from closing. When the
Loop clears, the gate resumes closing. If gate is opening or fully open, as soon as
the Loop clears, the gate immediately begins closing to discourage tailgaters.
Dynamic Braking: When SLIDE is ON, gate brakes whenever it stops.

When SLIDE is OFF, gate brakes only at open or close limit.

TIMER Sets the Reclose Time r to OFF (left) or ON (right). When ON , th e timer
(S1-2) controls how long the gate waits at the open limit before closing. The Timer can be

set from 0-250 seconds by adjusting the Reclose Timer pot (R94). During a power
outage, if the gate is fully open and TIMER is ON, the Reclose Timer starts after

the restoration of power, causing the fully open gate to close automatically.

RETRY Sets the Retry function to OFF (left) or ON (right) . When ON, if the ga te me ets

(S1-3) an obstacle, a closing gate reverses and an opening gate stops, waits 30 seconds,

then tries to resume. The gate will re-try twice before it faults out.

ATG Sets Anti-Tailgate function to OFF (left) or ON (right). The Anti-Tailgate feature
(S1-4) helps prevent two cars from entering on one OPEN command.

MASTER In conjunction with the TRAP switch, sets configuration for master/slave system.
(S1-5)

TRAP In conjunction with the MASTER switch, sets configuration for master/slave system.
(S1-6)

SWITCH S2 Selects the direction the gate will open for Typical Installation(Left) an

OPEN TO Restricted Installation(Right).

LEFT/RIGHT
SWITCH S3 Selects the direction the power fail operation option will move the gate (left/right) if

POWER FAIL AC power fails.
LEFT/RIGHT

INDICATORS

LED indicators light when controls and inputs are active. Additional indicators are as follows:

LEFT LIMIT Indicates that the LEFT limit switch is activated.
RIGHT LIMIT Indicates that the RIGHT limit switch is activated.
MTR LEFT Indicates that the gate is moving counterclockwise.
MTR RIGHT Indicates that the gate is moving clockwise.
XMIT Indicates data is being sent to the other unit in a Master/Slave system.
RECV Indicates data is being received from the other unit in a Master/ Slave

system.

TIMER Indicates the Reclose Timer is running. Timer is set at pot R94.

Rev C Doc 6001287 (01-20284) 29 of 40

FAULT Indicates a fault in the system. See Fault List in Part 5, Troubleshooting

and Maintenance.

MAX RUN TIME Indicates the motor ran for more than 75 seconds without reaching a limit

switch, and was stopped. Usually requires mechanical service. See
Fault List in Part 5, Troubleshooting and Maintenance.

REVERSE Indicates the peak motor current threshold was reached. See Fault List in

Part 5, Troubleshooting and Maintenance.

OVERLOAD Indicates that the average motor current threshold was reached. See

Fault List in Part 5, Troubleshooting and Maintenance.

OPEN MTR Indicates the motor is engaged, but is not drawing any current. The

thermal overload switch on the motor may need to be reset. See Fault
List in Part 5, Troubleshooting and Maintenance.

FUNCTIONAL INPUTS
NOTES: ➊ The term "activation" means closing an input circuit (via a relay or switch), and may be

momentary or continuous. Momentary activations are superseded by any command.
Continuous activations are superseded only by an overriding command.

➋ Activating any command when gate is at the open limit stops the Reclose Timer. When
the command (except Manual CLOSE and STOP) is cleared, the Reclose Timer is reset.

MANUAL INPUTS: OPEN, CLOSE, AND STOP (TB2)

MAN OPEN Activation fully opens the gate. Continuous activation holds gate open.

MAN OPEN overrides Anti-Tail-gate (ATG), Reclose Timer, and all controls
but MAN STOP.

MAN CLOSE Activation fully closes the gate. Continuous activation holds gate closed.

MAN CLOSE overrides all controls but MAN STOP, MAN OPEN and FIRE.

MAN STOP De-activation stops opening and closing gates. MAN STOP overrides

Reclose Timer and all other controls, manual or automatic. If MAN STOP is

disconnected from its COMMON, no commands affect the gate.

ENTRY SYSTEM/FIRE SWITCH INPUTS (TB9)

CYCLE Reclose Timer OFF:

Activation opens the gate, which remains open until another command is
received. A CYCLE command when the gate is fully open closes the gate.
This Alternate action allows a single command to both open and close the
gate. CYCLE also opens a closing gate. If Anti-Tailgating (ATG) is ON,
Alternate Action is disabled. With ATG ON, the gate begins closing as soon
as the INTERRUPT LOOP clears.

Reclose Timer ON:

Activation opens the gate, then the Reclose Timer closes the gate. A
CYCLE command also opens a closing gate, but will not close a fully open
gate if the Reclose Timer is ON. If Anti-Tailgating (ATG) is ON, the gate
closes as soon as the INTERRUPT LOOP clears.

FIRE Activation opens the gate. Continuous activation holds the gate open. If

Reclose Timer is OFF, when FIRE is deactivated, gate closes immediately. If
Reclose Timer is ON, when FIRE is deactivated, the Reclose Timer starts.
FIRE overrides all commands but Manual STOP.

EXIT LOOP/SHADOW LOOP DETECTOR INPUTS (TB10)

EXIT LOOP Same as CYCLE, but does not close the gate when it is fully open.

Rev C Doc 6001287 (01-20284) 30 of 40

SHADOW LOOP Activation prevents the gate from opening or closing so the gate won't hit a

vehicle. If the gate is already moving, or if the gate is not fully opened or
closed, this input has no effect (swing gate only).

INSIDE/OUTSIDE INTERRUPT LOOP DETECTOR (TB16)

INSIDE
INTERRUPT LOOP with SLIDE "OFF" and ATG "ON"

Gate fully open or closed: activation prevents the gate from moving. When
the Interrupt loop clears, the gate begins closing.
Gate opening or closing: activation halts the gate. When the Interrupt
Loop clears, an opening gate closes and a closing gate resumes its course.

INSIDE
INTERRUPT LOOP with SLIDE "OFF" and ATG "OFF"

Gate fully open or closed: activation prevents the gate from moving.
Gate opening or closing: activation halts the gate. When the Interrupt

Loop clears, the gate resumes its course.

INSIDE
INTERRUPT LOOP with SLIDE "ON" and ATG "ON"

Gate fully open or closed: activation prevents the gate from closing. When
the Interrupt loop clears, the gate begins closing.
Gate opening or closing: activation halts a closing gate. When the
Interrupt Loop clears, an opening gate closes and a closing gate resumes its
course.

INSIDE
INTERRUPT LOOP with SLIDE "ON" and ATG "OFF"

Gate fully open or closed: activation prevents the gate from closing only.
Gate opening or closing: activation fully opens a closing gate and starts

the Reclose Timer if timer is "ON".

OUTSIDE
INTERRUPT LOOP with ATG "OFF"

Gate fully open or closed: activation prevents the gate from closing only.
Gate opening or closing: activation fully opens the closing gate and starts

the Reclose Timer if timer is "ON".

OUTSIDE
INTERRUPT LOOP with ATG "ON"

Gate fully open or closed: activation prevents the gate from closing only.
Gate opening or closing: activation prevents the gate from closing. When

the interrupt loop clears, the gate begins closing.

INTERRUPT BAR INPUTS (TB11)

INTERRUPT BAR Activation fully opens a closing gate and stops an opening gate. If RETRY is

ON, the gate waits 30 seconds, then tries to resume. The gate will re-try
twice before faulting out. If the Interrupt Bar remains active for more than 30
seconds, the gate will not retry.

Rev C Doc 6001287 (01-20284) 31 of 40

INS./OUTS. INT. SENSE / SHADOW SENSE / EXIT SENSE (TB12/TB13/TB14/TB15) I NPUTS

INSIDE Input from an Inside Interrupt loop provides the signal for an optional
LiftMaster INTERRUPT loop detector add-on board. Operation is the same as the
Interrupt Loop SENSE input, above.

OUTSIDE Input from an Outside Interrupt loop provides the signal for an optional
INTERRUPT LiftMaster loop detector add-on board. Operation is the same as the Interrupt
SENSE Loop input, above.

SHADOW Input from shadow loop provides signal for optional LiftMaster loop detector
SENSE add-on board. Operation is the same as Shadow Loop input, above.

EXIT Input from exit loop provides signal for optional LiftMaster loop detector add­on SENSE board. Operation is the same as Exit Loop input, above.

RADIO INPUT (TB6)

RADIO RECV Convenience terminals provide power (24VAC, 200mA) and signal

connection for a radio receiver. Activation is the same as CYCLE.

MAG LOCK INPUT (TB4)

MAG LOCK NO and COM inputs can close a circuit (i.e., MagLock) when the Close Limit

switch is activated (the gate is fully closed).
NC and COM inputs close a circuit (security camera, camcorder, light, etc.)
when the Close Limit switch is deactivated (when gate is not fully closed).

SLAVE I/O INPUT (TB1)

SLAVE I/O Input/output terminals are used to control a second gate operator in a

ADJUSTMENTS

OVERLOAD Setting protects the gate operator from excessive motor current.
(R71) If RETRY is ON, when the limit is exceeded, a closing gate reverses a few

REVERSE Adjustable pot controls gate sensitivity to blockages by the instantaneous
RIGHT (R78) rise in motor current. If RETRY is ON, when the limit is exceeded, a closing

REVERSE Adjustable pot controls gate sensitivity to blockages by the instantaneous
LEFT (R81) rise in mot or current. If RETRY is ON, when the limit is exceeded, a closing

NOTE: LiftMaster gate operators have two reverse sense adjustments (left and right)

INRUSH Adjustable pot controls the delay in sensitivity to a Reverse Sense input.
(R119) This delay in sensitivity prevents the initial motor inrush current from

RECLOSE Adjustable pot controls the time delay between gate reaching full open and
TIMER (R94) starting to reclose. The Reclose Timer is adjustable from 0-250 seconds.

Master/Slave system.

inches and stops, and an opening gate stops, waits 30 second, then tries to
resume. The ga te will retry tw i c e be fo re fa u lting out.

gate opens fully and an opening gate stops, waits 30 seconds, then tries to
resume. The ga te will retry tw i c e be fo re fa u lting out.

gate opens fully and an opening gate stops, waits 30 seconds, then tries to
resume. The ga te will retry tw i c e be fo re fa u lting out.

where other gate operators have only one. This allows greater flexibility of
installation. For instance, you can install a gate on an incline and not worry
about sacrificing downhill gate sensitivity.

causing a fault condition. The weight of the gate determines this setting.

Rev C Doc 6001287 (01-20284) 32 of 40

CONNECTORS

LIMIT SWITCH (J4) Connector for the left/right limit switch cable.
BATTERY I/O (J11) Connector for use by the Power Fail Operation unit.
PWR INPUT (J1) Connector for AC input power.
MOTOR POWER (J3)Connector for the motor cable.
LOOP DETECTOR Connector for optional LiftMaster Outside Interrupt Loop detector

(J15) add-on board.
LOOP DETECTOR Connector for optional LiftMaster Inside Interrupt Loop detector add-

(J12) on board.
LOOP DETECTOR Connector for optional LiftMaster Shadow Loop detector add-on

(J13) board.
LOOP DETECTOR Connector for optional LiftMaster Exit Loop detector add-on board.

(J14)

Rev C Doc 6001287 (01-20284) 33 of 40

APPENDIX B

MODEL BG 3000-B1 PARTS LIST

Rev C Doc 6001287 (01-20284) 34 of 40

ITEM # PART NAME WHAT IT DOES

1 Top Cover Covers gate operator box
2 Gate Operator Housing Covers gate operator
3 Shaft Transmits drive power to gate arm
4 Flange Bearing Holds shaft in place
5 Lower Crank Transmits drive power to turnbuckle
6 Turnbuckle Transmits drive power to shaft
7 AC Motor Assembly Provides drive power
8 AC Motor Produces drive power

9 AC Motor Power Cable Assy Provides power to AC motor
10 V-Belt (no Power Fail Option) Transmits power from motor to gear reducer
11 V-Belt for Power Fail Option Transmits power from motors to gear reducer
12 Gear Reducer Reduces motor speed
13 Reducer Pulley Reduces Motor speed
14 Limit Switch Bracket Assembly Controls lever arm lim its
15 Limit Switch Cable Assembly Connects limit switch to control board
16 Limit Switch Stops motor when gate reaches limit
17 Limit Cam Activates limit switch
18 Limit Switch Bracket Holds limit switches
19 Control Box Hinge Attaches control box; allows control box to be

moved for work on other parts of gate operator
20 Control Box Holds Control Board
21 Control Box Switch Turns gate operator on or off
22 Control Board Controls Gate Operator
23 Control Box Clear Cover Seals Control Box
24 Door Seals Gate Operator Housing
25 Door Lock Prevents unauthorized entry
26 DC Motor Provides drive power in power outage
27 Battery Provides power to DC motor
28 Tray Holds power fail option equipment
29 Battery Support Bracket Assy Supports battery, contains relays, rectifier
30 Gate Arm Hub Holds gate arm to shaft
31 Gate Arm Controls traffic
32 Arm Clamp Holds gate arm to hub

Rev C Doc 6001287 (01-20284) 35 of 40

APPENDIX C

LIMIT CAMS

Gate operator limit cams are factory adjusted for 900 arm swing, and never need to be adjusted in the
field. However, if long-term use requires replacing the limit cams, use the following procedure to install
and adjust the replacement limit cams.

• Remove old limit cams by loosening the locking screws and removing cams from the shaft.

• When installing replacement limit cams, ensure that the limit cams are centered over their

corresponding limit switches.

• Small adjustments are magnified by the length of the gate.

• To avoid damage to the gate and gate operator due to the gate overrunning its limits, perform

the following steps carefully:

1. REPLACING AND ADJUSTING LIMIT CAMS IN A TYPICAL INSTALLATION

Figure 13. Setting Limit Cams For A Typical Installation.

1. Make sure that switch S2 is set to the "Left" position.

2. Turn on gate operator power switch.

3. Using manual CLOSE and STOP, move the gate to its proper closed limit position.

4. If not already loose, loosen the locking screw on the left limit cam and turn the cam counter­clockwise until it just barely closes the limit switch.

5. Tighten the left lim it cam locking screw.

6. Using manual OPEN and STOP, move the gate to its proper opened limit position.

7. If not already loose, loosen the locking screw on the right limit cam and turn the cam clockwise
until it just barely closes the limit switch.

8. Tighten the right lim it cam lock ing screw.

9. Open and close the gate to check the limit cam settings. If required, readjust the limit cams
until they are set properly.

Rev C Doc 6001287 (01-20284) 36 of 40

2. REPLACING AND ADJUSTING LIMIT CAMS IN A RESTRICTED INSTALLATION

Figure 14. Setting Limit Cams For A Restricted Installation.

1. Make sure that switch S2 is set to the "Right" position.

2. Turn on gate operator power switch.

3. Using manual CLOSE and STOP, move the gate to its proper closed limit position.

4. If not already loose, loosen the locking screw on the right limit cam and turn the cam clockwise
until it just barely closes the limit switch.

5. Tighten the right lim it cam lock ing screw.

6. Using manual OPEN and STOP, move the gate to its proper open limit position.

7. If not already loose, loosen the locking screw on the left limit cam and turn the cam counter­clockwise until it just barely closes the limit switch.

8. Tighten the left lim it cam locking screw.

9. Open and close the gate to check the limit cam settings. If required, readjust the limit cams
until they are set properly.

Rev C Doc 6001287 (01-20284) 37 of 40

GLOSSARY

AC: Alternating Current. An electric current or voltage that reverses direction at regular intervals.
Alternate Action: Ability to open and close a fully open gate by using the same open command.
Arc: The area that is swept by a swing gate from fully closed to fully open position.
ATG: Anti-tailgating refers to a method of immediately closing an opening gate behind a vehicle so that

an unauthorized vehicle can not follow the authorized vehicle through the gate.

DC: Direct Current. An electric current of constant value flowing in one direction only.
Dynamic braking: Stopping the gate by activating the forward and reverse windings of the gate

operator motor in each half AC cycle.

Fault: An abnormal condition which causes the gate to stop to protect the gate and the user.
Gate sensitivity: The response of the gate operator to an exerting force against the gate.
Gear Box: A device that changes the speed and power of its driving force (motor).
Inrush current: Initial current drawn into an electrical device due to its capacitive or inductive nature.
Interrupt Bar or Edge: A switch which is installed at the edge of a gate to protect an object which is

situated between the gate and the gate frame.

LED: Light Emitting Diode. LEDs are indicators placed on the controller board which light up to

indicate an action in the system.

Limit switch: A switch which its closure indicates the gate has reached its open or close limit, causing

the gate to stop. There are two limit switches, open and close.

Limit cam: An object which its excursion corresponds to the gate traveling distance and closes the

limit switch at the open or close limit of the gate.

Loop sensor: A wire embedded in the ground for magnetically sensing large metallic objects (cars).

✔✔✔✔ Exit or Open Loop: activation opens the gate.
✔✔✔✔ Interrupt or Reverse or Reopen Loop: activation reverses or stops the gate.
✔✔✔✔ Shadow Loop: activation prevents a fully open or closed gate from moving while a vehicle

is inside the arc of a swing gate.

Loop detector: An electronic device that is activated by a loop sensor sensing a metallic object.
Master/Slave: A synchronized system containing a pair of gate operators.
Maglock: An electric magnet which is used to secure the closed gate.
Power Fail Option: A battery backup system which opens or closes the gate at power outage.
Pulley: A grooved wheel which transfers power via a belt.
Reclose Timer: An electronic timer which closes the fully open gate automatically.
Retry: A condition at which the stopped gate resumes its course automatically after the occurrence of

a Fault.

RPM: Rotation Per Minute is a term to indicate the speed of an rotary object.
Sprocket: A toothed wheel which transfers power via a chain.
Thermal overload: A condition at which a heat producing device shuts off automatically when it

reaches a critical and damaging temperature level.

Torque: A force that causes rotation.
Torque Limiter: A clutch-like mechanism used to relieve excessive torque generated by the gate on

the gate operator.

Rev C Doc 6001287 (01-20284) 38 of 40

NOTICE TO CANADIAN USERS

NOTICE: The Industry Canada label identifies certified equipment. This certification means that the

equipment meets telecommunications network protective, operation and safety requirements as
prescribed in the appropriate Terminal Equipment Technical Requirements document(s). The
Department does not guarantee the equipment to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the
facilities of the local telecommunications company. The equipment must also be installed using an
acceptable method of connection. The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be coordinated by a representative designated by the supplier.
Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility,
telephone lines and internal metallic water pipe system, if present, are connected together. This
precaution may be particularly important in rural areas.

Caution: Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority, or an electrician, as appropriate.

Rev C Doc 6001287 (01-20284) 39 of 40

COPYRIGHT 2001
ALL RIGHTS RESERVED

This document is protected by copyright and may not be copied or adapted without the prior written
consent of LiftMaster. This documentation contains information proprietary to LiftMaster and such
information may not be distributed without the prior written consent of LiftMaster. The software and
firmware included in the LiftMaster product as they relate to this documentation are also protected by
copyright and contain information proprietary to LiftMaster.

FOR TECHNICAL SUPPORT

Call our toll free numbers:

[phone]
[phone]

Installation and service information is
available six days a week.

TO ORDER REPAIR PARTS

Call our toll free numbers:

[phone]
[phone]

Prepare to provide the following
information when ordering repair parts:

! Part Number
! Part Name
! Model Number