Chamberlain MADCBB User Manual
RADIO
RECEIVER
INCLUDED
The Chamberlain Group, Inc.
Elmhurst, Illinois 60126-1196
MADCBB, MATDCBB,
MASDCBB, & MASTDCBB
HEAVY-DUTY DC BARRIER GATE OPERATOR
OWNER'S MANUAL
845 Larch Avenue
www.liftmaster.com
MEGA ARM &
MEGA SPRINT
MEGA ARM TOWER &
MEGA SPRINT TOWER
IMPORTANT: Read and understand Warranty Page first. Batteries (included) MUST be connected for proper
operation of operator. Use (2) LiftMaster 12 Vdc 7AH (Part # MBAT).
TABLE OF CONTENTS
SAFETY 2-4
Safety Symbol and Signal Word Review 2
UL325 Model Classifications 3
Safety Installation Information 4
INTRODUCTION 5
Features 5
Tools Needed 5
Operator Specifications 5
INSTALLATION 6-7
Install the Concrete Pad and Conduit 6
Attach the Operator to the Concrete Pad 7
Install the Barrier Arm 7
WIRING 8-11
Power Wiring 8
Input Commands Connections 9
Accessory and Relay Connections 10
Battery Installation 10
Primary/Second Wiring 11
OPERATION AND MAINTENANCE 15-16
Important Safety Instructions 15
General Service 16
Shear Pin Replacement 16
Battery 16
ADDITIONAL FEATURES 17-20
Suggested Loop Sensor Locations 17
Trap Instructions 18
Sequence Access Management System (SAMS) with "Memory" 19
Control Board Layout 20
TROUBLESHOOTING 21
Battery Checkout 21
Gate Not Operating 21
Troubleshooting Chart 21
REPAIR PARTS 22
Part Numbers and Descriptions 22
Parts Shipped 22
Mega Arm Tower Unique Parts List 22
Mega Arm Options Parts List 22
INSTALL THE RECEIVER 12
FEATURES AND FUNCTIONS 13-14
S1 DIP Switches 13
S2 DIP Switches 14
ADJUSTMENTS 15
Instant Reverse Device (IRD) 15
Adjust the Barrier Arm 15
SAFETY » SAFETY SYMBOL AND SIGNAL WORD REVIEW
When you see these Safety Symbols and Signal Words on the following pages, they
will alert you to the possibility of serious injury or death if you do not comply with
the warnings that accompany them. The hazard may come from something
mechanical or from electric shock. Read the warnings carefully.
When you see this Signal Word on the following pages, it will alert you to the
possibility of damage to your gate and/or the gate operator if you do not comply
with the cautionary statements that accompany it. Read them carefully.
IMPORTANT
• BEFORE attempting to install, operate or maintain the operator, you must read and
fully understand this manual and follow all safety instructions.
• DO NOT attempt repair or service of your commercial door and gate operator
unless you are an Authorized Service Technician.
NOTE:
ACCESSORIES 23
WARRANTY POLICY 24
MECHANICAL
ELECTRICAL
2
SAFETY » UL325 MODEL CLASSIFICATIONS
UL325 MODEL CLASSIFICATIONS
CLASS I – RESIDENTIAL VEHICULAR GATE OPERATOR
A vehicular gate operator (or system) intended for use in a home of one-to four single family dwellings, or a garage or
parking area associated therewith.
CLASS II – COMMERCIAL/GENERAL ACCESS VEHICULAR GATE OPERATOR
A vehicular gate operator (or system) intended for use in a commercial location or building such as a multi-family housing unit
(five or more single family units) hotel, garage, retail store or other building servicing the general public.
CLASS III – INDUSTRIAL/LIMITED ACCESS VEHICULAR GATE OPERATOR
A vehicular gate operator (or system) intended for use in a 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 (or system) 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.
I
II
III
IV
SAFETY ACCESSORY SELECTION
All UL325 compliant LiftMaster gate operators will accept external entrapment
protection devices to protect people from motorized gate systems. UL325 requires
that the type of entrapment protection correctly matches each gate application.
Below are the six types of entrapment protection systems recognized by UL325 for
use on this operator.
ENTRAPMENT PROTECTION TYPES
Type A: Inherent obstruction sensing system, self-contained within the operator.
This system must sense and initiate the reverse of the gate within two
seconds of contact with a solid object.
Type B1: Connections provided for a non-contact device, such as a photoelectric eye
can be used as a secondary protection.
Type B2: Connections provided for a contact sensor. A contact device such as a gate
edge can be used for secondary protection.
Type C: Inherent adjustable clutch or pressure relief valve.
Type D: Connections provided for a control requiring continuous pressure to
operate the operator open and close.
Type E: Built-in audio alarm. Examples include sirens, horns or buzzers.
NOTE: UL requires that all installations must have
warning signs placed in plain view on both sides of the
gate to warn pedestrians of the dangers of motorized
gate systems.
Moving Gate Can Cause
Injury or Death
KEEP CLEAR! Gate may move at any
time without prior warning.
Do not let children operate the gate or
play in the gate area.
This entrance is for vehicles only.
Pedestrians must use separate entrance
UL325 ENTRAPMENT PROTECTION REQUIREMENTS
GATE OPERATOR ENTRAPMENT PROTECTION
UL325
Installation
Class
Class
I & II
Class III
Class IV
Slide Gate Operator
Primary
Type
A
A, B1 or B2 A, B1, B2, D or E
Secondary
B1, B2 or D
A, B1, B2, D or EA, B1, B2 or D
Type
The chart above illustrates the entrapment protection requirements for each of the
four UL325 classes.
In order to complete a proper installation you must satisfy the entrapment
protection chart shown above. That means that the installation must have one
primary means of entrapment protection and one independent secondary means of
entrapment protection. Both primary and secondary entrapment protection
methods must be designed, arranged or configured to protect against entrapments
in both the open and close directions of gate travel.
For Example: For a slide gate system that is installed on a single-family
residence (UL325 Class I) you must provide the following: As your primary type of
entrapment protection you must provide Type A inherent (built into the operator)
entrapment sensing and at least one of the following as your secondary
entrapment protection: Type B1- Non-contact sensors such as photoelectric eyes,
Type B2- Contact sensors such as gate edges or Type D- Constant pressure control.
Swing & Gate Barrier
(Arm) Operator
Primary
Type
A or C
A, B1, B2 or C
A, B1, B2, C or D A, B1, B2, C, D or
Secondary
Type
A, B1, B2, or C
A, B1, B2, C, D
or E
E
3
SAFETY » SAFETY INSTALLATION INFORMATION
1. Vehicular gate systems provide convenience and security. Gate systems are comprised of many component parts. The gate operator is only one component. Each gate
system is specifically designed for an individual application.
2. Gate operating system designers, installers and users must take into account the possible hazards associated with each individual application. Improperly designed,
installed or maintained systems can create risks for the user as well as the bystander. Gate systems design and installation must reduce public exposure to potential
hazards.
3. A gate operator can create high levels of force in its function as a component part of a gate system. Therefore, safety features must be incorporated into every design.
Specific safety features include:
• Gate Edges • Guards for Exposed Rollers • Photoelectric Sensors
• Screen Mesh • Vertical Posts • Instructional and Precautionary Signage
4. Install the gate operator only when:
a. The operator is appropriate for the construction and the usage class of the gate.
b. All openings of a horizontal slide gate are guarded or screened from the bottom of the gate to a minimum of 4' (1.2 m) above the ground to prevent a
2-1/4" (6 cm) diameter sphere from passing through the openings anywhere in the gate, and in that portion of the adjacent fence that the gate covers in the
open position.
c. All exposed pinch points are eliminated or guarded, and guarding is supplied for exposed rollers.
5. 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 in contact with the vehicular gate during the entire path of travel of the
vehicular gate.
6. 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. Swinging gates shall not open into public access areas.
7. The gate must be properly installed and work freely in both directions prior to the installation of the gate operator.
8 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.
9. The Stop and/or Reset (if provided separately) must be located in the line-of-sight of the gate. Activation of the reset control shall not cause the operator to start.
10. A minimum of two (2) WARNING SIGNS shall be installed, one on each side of the gate where easily visible.
11. For a gate operator utilizing a non-contact sensor:
a. Reference owner’s manual regarding placement of non-contact sensor for each type of application.
b. Care shall be exercised to reduce the risk of nuisance tripping, such as when a vehicle trips the sensor while the gate is still moving.
c. One or more non-contact sensors shall be located where the risk of entrapment or obstruction exists, such as the perimeter reachable by a moving gate or barrier.
12. For a gate operator utilizing a contact sensor such as an edge sensor:
a. One or more contact sensors shall be located where the risk of entrapment or obstruction exists, such as at the leading edge, trailing edge and post mounted both
inside and outside of a vehicular horizontal slide gate.
b. One or more contact sensors shall be located at the bottom edge of a vehicular vertical lift gate.
c. A hard wired contact sensor shall be located and its wiring arranged so the communication between the sensor and the gate operator is not subject to mechanical
damage.
d. A wireless contact sensor such as the one that transmits radio frequency (RF) signals to the gate operator for entrapment protection functions shall be located
where the transmission of the signals are not obstructed or impeded by building structures, natural landscaping or similar obstruction. A wireless contact sensor
shall function under the intended end-use conditions.
e. One or more contact sensors shall be located on the inside and outside leading edge of a swing gate. Additionally, if the bottom edge of a swing gate is greater
than 6" (152 mm) above the ground at any point in its arc of travel, one or more contact sensors shall be located on the bottom edge.
f. One or more contact sensors shall be located at the bottom edge of a vertical barrier (arm).
4
INTRODUCTION » FEATURES + TOOLS NEEDED + OPERATOR SPECIFICATIONS
FEATURES
• Full service controller with eight inputs and LED indicators for loops, card reader,
radio, etc.
• Reversible arm direction for right or left handed operation.
• Instant Reverse Device (IRD) monitor senses obstructions during motion.
• Fail safe (auto open on AC power failure).
• Raise gate input memory will memorize multiple vehicles – ideal for bar code
scanners and AVI.
• Ability to STOP arm in close travel if tail-gating is sensed at close loop.
• Anti-tail gate alarm - fires K1 relay to trigger a warning device when tail-gating is
sensed.
• Direct drive gear reducer eliminates many parts that might otherwise fail.
• State of the art MOSFET motor drive technology, NO contactors or relays.
• Soft start and stop in open and close travel motions.
• No limit switches to fail - uses magnetic (Hall Effect) sensors to monitor arm
position.
• Maximum Run Timer for motor with anti-tamper protection in closing direction.
• Each operator configurable as primary or second operator.
• LED diagnostics for easy troubleshooting.
• Adjustable Timer-To-Close with on/off selection.
• Transient voltage protection on all inputs.
• SAMS with “memory” - allows Mega Arm to open a slide/swing gate first then
raises arm.
• Dynamic motor braking to preserve arm positioning.
TOOLS NEEDED
During assembly, installation, and adjustment of the operator, the tools listed below may be needed.
• Wrench or Socket Set
• Phillips Head Screwdriver
• C Clamps
• Level
• Small Screwdriver
• T25 Torx Head Screwdriver
OPERATOR SPECIFICATIONS
This model is intended for use in vehicular gate applications.
• High torque 24 volt Permanent Magnet DC motor
• On 120 Vac installations, unswitched duplex outlet gives convenient supply
for 120 Vac accessories
• Built in battery run - inherent 24 Vdc backup power with regulated 24 Vdc
for accessories
• Capable of being powered from 120 or 230 Vac, or UL Listed Class 2 Solar
Power
20-1/4"
15-3/4"
FRONT VIEW
MEGA ARM PEDESTAL
20-1/4"
41-1/2"
21-1/2"
SIDE VIEW
3-1/2"
13-1/2"
41-1/2"
36-1/2"
• Break away mount design for the 12-15 foot x 3 inch tubular aluminum
barrier arm
• Heater option MUST be used if temperature is 30° or below. Heater option
available for 120 Vac operators ONLY. Refer to Accessories page.
• All rust proof aluminum construction with white powder coat baked on
enamel. Molded Polyethylene UV stabilized cover never needs wax or paint
(excludes towers).
MEGA ARM TOWER
3-1/2"
13-1/2"
FRONT VIEW
42"
SIDE VIEW
36-1/2"
42"
17-1/2"
4"5"
8"
14-1/4"
9"
13-1/2"
5
INSTALLATION » INSTALL THE CONCRETE PAD AND CONDUIT
INSTALL THE CONCRETE PAD AND CONDUIT
Check the national and local building codes before installation.
Layout the concrete pad for the operator. The concrete pad should be
1
approximately 24" x 24" x 24" in order to ensure proper and stable operation.
The pad should be 6" above the finished grade or even with top of curb (if
applicable). NOTE: Pad should always extend below frost line in regions where
ground will freeze.
Install the conduit. The conduits should be installed to fit the 3-1/2" x
2
3-1/2" opening in the pedestal base plate or the 10-1/4" x 8-1/4" opening in
the tower base plate. The operator should be centered on the pad and spaced
approximately 6" from the edge of the pad on drive way side (in order to get
the most reach out of arm). Install conduits for the 120/230 Vac main power,
low voltage control wiring, and one or two extra for loop sensor leads. Conduit
size should be limited to 1/2" when possible to reduce crowding if more than
four are needed. All conduits must be UL approved.
Pour a concrete pad (reinforced concrete is recommended).
3
24"
6"
18"
24"
TOP VIEW OF PEDESTAL FOOTPRINT TOP VIEW OF TOWER FOOTPRINT
(concrete pad)
8"
12"
5-1/2"
5-1/2"
8"
12"
8"
3-1/2"
9"
2"
6"
5-1/4"
9-7/8"
13-1/2"
5-1/4"
7-1/8"
(gate arm bracket)
10-1/4"
8-1/4"
(door)
12-1/4"
14-1/4"
(concrete pad)
7-1/8"
3-1/2"
6"
6
INSTALLATION » ATTACH THE OPERATOR TO THE CONCRETE PAD
ATTACH THE OPERATOR TO THE CONCRETE PAD
Position the operator on the concrete pad and mark the mounting
1
holes.
Install 1/2" x 6" wedge anchors in the location of the mounting
2
holes. The wedge anchors should be installed with approximately 1-1/4"
showing above the concrete pad in order to allow for the 1/2" thick base plate
as well as washers for leveling.
Attach the operator to the concrete pad with appropriate fasteners.
3
PEDESTAL INSTALLATION TOWER INSTALLATION
(base plate)
1/2" x 6"
INSTALL THE BARRIER ARM
Line up the holes in the barrier arm with the slotted holes in gate arm bracket.
1
Insert the bolts through the barrier arm and gate arm bracket.
2
Secure with the flat washers and nylon nuts (It is recommended to use ONLY
nylon nuts).
3
(Gate Arm Bracket)
(Operator)
(base plate)
1/2" x 6"
(Barrier Arm)
7
WIRING » POWER WIRING
To reduce the risk of SEVERE INJURY or DEATH:
• ANY maintenance to the operator or in the area near the operator MUST NOT
be performed until disconnecting the electrical power and locking-out the power
via the operator power switch. Upon completion of maintenance the area MUST
be cleared and secured, at that time the operator may be returned to service.
• Disconnect power at the fuse box BEFORE proceeding. Operator MUST be
properly grounded and connected in accordance with local electrical codes.
NOTE: The operator should be on a separate fused line of adequate capacity.
• ALL electrical connections MUST be made by a qualified individual.
POWER WIRING
Use UL approved 14AWG (or larger) 600 volt insulated wire only.
NOTE: Do not connect the batteries until instructed.
120 VAC
Ensure your main power is OFF before connecting the AC power.
1
• DO NOT install any wiring or attempt to run the operator without consulting the
wiring diagram. We recommend that you install an optional reversing edge
BEFORE proceeding with the control station installation.
• ALL power wiring should be on a dedicated circuit and well protected. The
location of the power disconnect should be visible and clearly labeled.
• ALL power and control wiring MUST be run in separate conduit.
• BEFORE installing power wiring or control stations be sure to follow ALL
specifications and warnings described below. Failure to do so may result in
SEVERE INJURY to persons and/or damage to operator.
Black
The AC wiring should be connected to the wires exiting the conduit or pedestal
2
post. Connect AC power to the operator:
• Connect the black wire to the incoming 120 Vac hot lead.
• Connect the white wire to the incoming neutral lead.
• Connect the green wire to the ground.
Do not connect any of the AC power wires directly to the control board.
3
230 VAC
The 120 to 230 Vac conversion kit will need to be purchased for 230 Vac operation.
See Accessories page.
Pedestal
Version
White
Neutral
Green
120 Vac
Ground
Top End of 4" x 4" Tube
120 VAC
8
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