Nice 7251 Installation manual

Nice Slide Gate
Operator
Vehicular Slide Gate Operator
Model 7251/7351
1050 Control Board
Revision 5.0.0.0_4-2019
Part #10001300
7251 post mount with 1050 control board
7351 pad mount with 1050 control board
Programming & controls, connections and safety
information for the 7251/7351 slide gate operator

1 - Overview 4
2 - General Safety Information 6
3 - Use of Vehicle Detectors 9
4 - Gate Construction and Safety 9
5 - Maintenance of Gate Systems 11
6 - Entrapment Protection 12
7 - Compatible External Sensors 13
8 - 7251-7351 PARTS IDENTIFICATION 13
9 - 7251 INSTALLATION 14
9.1 - POST INSTALLATION 14
9.2 - CHASSIS MOUNTING 14
9.3 - CHAIN BRACKET MOUNTING 15
10 - 7351 PARTS IDENTIFICATION 16
10.1 - POST INSTALLATION 16
10.2 - CHASSIS MOUNTING 16
10.3 - CHAIN BRACKET MOUNTING 17
11 - CIRCUIT BOARD LAYOUT 18
12 - INCOMING POWER WIRING 18
13 - LIMIT AND MOTOR WIRING 19
13.1 - LIMIT AND MOTOR CONNECTION TO THE BOARD 19
13.2 - SETTING THE LIMIT SWITCHES 20
13.3 - QUICK RELEASE OPERATION 21
14 - LEARNING MODE 22
15 - ACCESSORY INPUTS AND OUTPUTS 23
15.1 - Outputs 23
15.2 - Inputs 23
15.3 - Communication buses 24
15.4 - Programming the plug-in receiver and remote controls 24
16 - 120VAC POWER WIRING 25
17 - SOLAR PANEL CHART 25
18 - OPTIONAL INPUTS 26
18.1 - Fire dept. connection 26
18.2 - Magnetic lock connection 26
18.3 - Guard station 26
18.4 - Exit and edge inputs wiring diagram 26
18.5 - Radio receiver connection (third party) 27
18.6 - Optional power output 27
19 - INSPECTION AND OPERATION 27
20 - GENERAL LAYOUT AND SAFETY ACCESS 28
21 - ACCESSORIES AND SENSORS 29
21.1 - Monitored Safety Device Types 30
22 - IRB-RET WIRING DIAGRAM 31
23 - GEM-103 WIRING DIAGRAM 32
24 - WEL-200 WIRELESS EDGE RECEIVER 32
25 - BOARD NOMENCLATURE 33
26 - PROGRAMMING BUTTONS 34
26.1 - Force 34
26.2 - Speed 34
26.3 - Acceleration 34
26.4 - Delay 34
26.5 - Function 34
26.6 - Display 35
27 - EMERGENCY VEHICLE ACCESS 36
28 - GLOSSARY 36
29 - MAINTENANCE SCHEDULE 37
30 - TROUBLESHOOTING 37
31 - OPERATOR DIMENSIONS 39
31.1 - 7251 Dimensions 39
31.2 - 7351 Dimensions 41
32 - WARRANTY 43
33 - INSTALLATION CHECKLIST 44
34 - APPENDIX - FRENCH TRANSLATIONS 45-48
TABLE OF CONTENTS

4
1. Overview
Congratulations on selecting a Nice gate
operator for automating your gate system. With
proper selection, system design, installation and
maintenance this operator should provide years
of reliable operation.
This manual covers the following Nice operator
models: 7251 and 7351.
1.1 1050 Control Board
The 1050 main control board is housed in a
protective plastic enclosure that includes a 2-line
LCD, with 5 dedicated buttons and 3 buttons
for navigation of the setup, programming, and
information menus, as well as 3 buttons for open,
close, and stop. Connectors for power, inputs,
and output peripherals are arranged around the
edges of the board and clearly labeled. A plug-
in connector is provided for direct installation of
a Nice-brand receiver which can be controlled
by up to 1000 transmitters. A recessed RJ-11
jack offers a connection to an optional O-View
programmer and optional Bluetooth module that
can be programmed via PC. Connectors for other
Nice-brand plug in accessories include 2-wire
Bluebus, self-monitored photocells for entrapment
protection. Dry contact inputs are provided for
loop, probe, and photoelectric detectors, as
well as guard station and fi re department control
of gate opening and closing. Voltage outputs
(+12VDC and +24VDC) are also made available
to power safety and entrapment-prevention
devices, and a magnetic lock if required. On
board charge control circuitry delivers reliable
power to a backup battery (if installed) and the
unit is equipped with input for a solar panel for
self-powered installations.
The 1050 main control board accepts DC input
voltage ranging from 10VDC to 32VDC. A 2-line
LCD with dedicated buttons allows installer to
quickly program the 1050 when changes to its
factory-default settings need to be made. A real
time clock/calendar enables programming for
scheduled weekly or daily events like opening,
closing, or locking the gate. Gate opening and
closing speed, acceleration, soft-start settings,
and reversing speed may be set to factory
default settings, or individually programmed per
customized gate installation requirements. Built-
in current sensing enables inherent gate force
monitoring and limiting for safety and an on board
alarm indicates when two sequential obstructions
have been sensed in either direction. The “Learn”
function helps gate installer confi gure Nice 1050
control board semi-automatically for optimum
settings of gate opening and closing speeds,
with simple programmable adjustments to force
and speed settings that may be made with the
programming button on the control panel.
1.2 1050 Control Board Features

Inputs for solar panel, batteries, and Main DC
Power.
Low power consumption in stand-by mode.

Built-in regulator to keep battery charged (either
through solar or main DC power).
Socket for plug-in Nice receiver.

Board compatible with Nice Opera System
(facilitates programming and diagnostic’s away
from the site of installation). Requires optional
O-View and OVBT (Bluetooth) module.

Easy programming with LCD display and
dedicated buttons.

Digital programming for auto-close, force,
speed, opening delay.

On board buttons for operating the gate (Open,
Close, Stop).

Built-in voltmeter to check input voltage, battery
voltage, solar panel voltage, motors’ current.

Temperature sensor to optimize charging
battery and system performance.
Programmable service alarm.

2 Programmable timers (from 1 sec to 9 hours).

Inputs for guard station, additional third party
receivers, loop detectors, FIRE and UL/Edge
signals.

2 programmable inputs (open, close, step, mid-
position, hold to open, hold to close, activating
timer).

Surge suppression on every peripheral input
(digital and analog).

Ports for self-powered Nice plug-in peripherals.
(BlueBus).

5
1.3 What is Included
P/N Name QTY
7251/7351 Control Box 1
#10020715 Chain Bracket 2
#72520001 #40 Roller Chain (35’) 1
Master Links 2
#10003115 Chain Bolts 2
5/16” x 3”, U-Bolts 4
5/16” x 2”, U-Bolts 4
OXI/A BlueBus Photo Eyes
EPMB/A BlueBus Photo Eyes
1.4 Product Specifi cations
Model 7251 - Post
Mount
7351 - Pad
Mount
Duty Cycle Varies based on charger type
Drive Electromechanical
Rate of Travel 1 ft/sec (30 cm/s)
Gate Length
Max. 25 ft (7 m)
Gate Weight Max 800 lb (362 kg)
Temperature
Rating -4º to 122º F (-20º to 50º C)
Operating
Voltage 12VDC
Input Voltage 10 - 32VDC
Idle Current 110mA (Awake) / 10mA (Standby)
Accessory Power .3A
User Controls 1050US board
Relays 2 programmable relays
Enclosure
22w x 22h x
15.5d inch
(56w x 56h x
39.4d cm)
20.5w x 26.5h x
18d inch
(52w x 67.3h x
45.7d cm)
Listed to UL325 Usage Class I, II, II, IV

6
1.5 The installation of this product is not a “do-
it-yourself” project. A qualifi ed gate operator
installation company should be contacted
to install the gate operator to ensure a safe
and reliable installation. Since many aspects
of gate system installation are under the
control of the installer, it is the responsibility
of the property owner to ensure the installer
is qualifi ed to carry out the installation in a
safe and professional manner.
1.6 Consult local government agencies for
up-to-date rules and regulations as certain
municipalities have established licensing,
codes or regulations that regulate automated
gate system design and installation.
2. General Safety Information
A gate operator is only a component in a gate
system. The other parts of the gate system
can include the gate, the external entrapment
sensors, access controls, and vehicle detectors.
To have a gate system that provides safety,
security, and reliable operation it is essential these
components operate together as a system. It is
the responsibility of the system designer and/or
installer to ensure any safety or operational issues
have been addressed.
IMPORTANT SAFETY INSTRUCTIONS
1.
READ AND FOLLOW ALL INSTRUCTIONS.
2.
Never let children operate or play with gate
controls. Keep the remote control away from
children.
3.
Always keep people and objects away from
the gate. NO ONE SHOULD CROSS THE
PATH OF THE MOVING GATE.
4.
Test the gate operator monthly. The gate
MUST reverse on contact with a rigid
object or stop when an object activates the
non-contact sensors. After adjusting the
force or the limit of travel, retest the gate
operator. Failure to adjust and retest the
gate operator properly can increase the risk
of injury or death.
5.
Use the emergency release only when the
gate is not moving.
6.
KEEP GATES PROPERLY MAINTAINED. Read
the user’s manual. Have a qualifi ed service
person make repairs to gate hardware.
7.
The entrance is for vehicles only. Pedestrians
must use separate entrance.
8. SAVE THESE INSTRUCTIONS.
WARNING
To reduce the risk of injury or death.

7
2.1 UL325 Usage Classes
The UL325 standard covers gate operators. Within
this safety standard several Usage Classes are
described that defi ne different types of installations
where gate operators can be applied. Some
operators are restricted in their usage application.
All Nice USA operators are approved for use in
all four UL325 Usage Classes. Appropriate Usage
Classes are shown in the Specifi cations.
2.1.1 ClassIResidentialGateOperator.Intended
for use in a location of one to four single
family dwellings or a parking area associated
with one to four single family dwellings.
2.1.2 ClassIICommercial/GeneralAccessGate
Operator. Intended for use in a commercial
location or building such as a multi-family
housing units (fi ve or more single family
units) hotels, garages, retail stores or other
buildings servicing general public.
2.1.3 ClassIIIIndustrial/LimitedAccessGate
Operator. Intended for use in an industrial
location or building such as factories
or loading docks or other locations not
intended to service general public.
2.1.4
ClassIVRestrictedAccessGateOperator.
Intended for use in guarded industrial
locations or buildings such as an airport
security area or other restricted access
location, not servicing general public,
in which access is monitored by security
personnel or via closed circuitry.

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2.2 Vehicular Traffi c Only
This automatic gate operator is not designed nor
is it intended for pedestrian traffi c. Vehicular gate
operators must by their nature be powerful to
function reliably. This power can cause injury or
death. Accordingly, direct all pedestrian traffi c to
a separate walk-through gate.
2.3 Install This Gate Operator Only When:
a. The operator is appropriate for the
construction of the gate 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 1.83 m (6 ft) above the
ground to prevent a 57.2 mm (2-1/4 inch)
diameter sphere from passing through the
openings anywhere in the gate, and the
portion of the adjacent fence that the gate
covers in the open position,
c. All exposed pinch points are eliminated or
guarded, and
d. Guarding is supplied for exposed rollers.
2.4 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.
2.5 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 entrapment
risk. Swinging gates shall not open into public
access areas
2.6 The gate must be properly installed and work
freely in both directions prior to gate operator
installation. Don't change operator settings
to compensate for an improperly installed,
improperly functioning, or damaged gate.
2.7
Permanently mounted controls intended for
user activation must be located at least 1.83
m (6 ft) 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. Exception: Emergency
access controls only accessible by authorized
personnel (e.g. fire, police, EMS) may be
placed at any location in the line-of-sight of
the gate.
2.8
The Stop and/or Reset button must be located
in the line-of-sight of the gate. Activation of
the reset control shall not cause the operator
to start.
2.9
A minimum of two (2) WARNING SIGNS shall
be installed, in the area of the gate. Each
placard is to be visible by persons located
on the side of the gate on which the placard
is installed.
2.10
When utilizing a Nice board, a maximum
of 8 entrapment protection devices may be
connected.
2.11
For gate operators utilizing a non-contact
sensor (Photo Eye):
a.
See instructions on the placement of non-
contact sensors 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,
and
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.

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2.12 For a gate operator utilizing a contact
sensor (Edge):
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 postmounted both
inside and outside of a vehicular horizontal
slide gate.
b. A hardwired contact sensor shall be
located and its wiring arranged so that the
communication between the sensor and the
gate operator is not subjected to mechanical
damage.
c. A wireless device such as 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 device
shall function under the intended end-use
conditions.
d. 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
152 mm (6 in) but less than 406 mm (16 in)
above the ground at any point in its arc of
travel, one or more contact sensors shall be
located on the bottom edge.
3. Use of Vehicle Detectors
Use of vehicle detectors (loop detectors) is strongly
encouraged to prevent damage to vehicles
caused by gates closing on them. This is not
considered to be a safety item as vehicle detectors
cannot provide protection to pedestrians. In some
situations, photoelectric devices may be used as
vehicle detectors, but should be wired accordingly.
4. Gate Construction and Safety
Gate construction plays a very important role in
ensuring the safety of any automated gate system.
The standard for gate construction is ASTM F2200.
Below are key areas to address safety in gate
design. For complete information consult the
standard. Copies of the standard are available at:
https://www.astm.org/Standards/F2200.htm
Another source of information is available
from DASMA, the Door and Access System
Manufacturer’s Association. The Association
publishes Technical Data Sheets, one of which
concerns ASTM F2200. For more information, see:
http://www.dasma.com/PDF/Publications/
TechDataSheets/OperatorElectronics/TDS370.pdf
4.1 General Requirements for gate construction
4.1.1
Gatesshallbeconstructedinaccordance
with the provisions given for the appropriate
gate type listed. Refer to ASTM F2200 for
additional gate types.
4.1.2
Gates shall be designed, constructed
and installed to not fall over more than 45
degrees from the vertical plane, when a gate
is detached from the supporting hardware.
4.1.3
Gatesshallhavesmoothbottomedges,
with vertical bottom edged protrusions not
exceeding 0.50 in. (12.7 mm) when other
than the Exceptions listed ASTM F2200.
4.1.4
Theminimumheightforbarbedwireshall
not be less than 6 ft. (1.83 m) above grade.
The minimum height for barbed tape shall
not be less than 8 ft. (2.44 m) above grade.

10
4.1.5 Anexistinggatelatchshallbedisabled
when a manually operated gate is retrofitted.
4.1.6 Agate latchshall notbeinstalled onan
automatically operated gate.
4.1.7 Protrusionsshallnotbepermittedonany
gate. Consult ASTM F2200 for exceptions.
4.1.8 Gatesshallbedesigned,constructedand
installed such that their movement shall not
be initiated by gravity when an automatic
operator is disconnected.
4.1.9 For pedestrian access in the vicinity of
an automated vehicular gate, a separate
pedestrian gate shall be provided. The
pedestrian gate shall be installed in a
location such that a pedestrian shall not
come in contact with a moving vehicular
access gate. A pedestrian gate shall not be
incorporated into an automated vehicular
gate panel.
4.1.10 Any non-automated gate that is to
be automated shall be upgraded to conform
to the provisions of this specification.
4.1.11 This specification shall not apply to
gates generally used for pedestrian access
and to vehicular gates not to be automated.
4.1.12 Any existing automated gate, when
the operator requires replacement, shall be
upgraded to conform to the provisions of
this specification in effect at that time.
4.2 Vehicular Horizontal Slide Gate Requirements
4.2.1 The following provisions shall apply
to Class I, Class II and Class III vehicular
horizontal slide gates:
4.2.1.1 All weight bearing exposed rollers
8 ft (2.44 m), or less, above grade shall be
guarded or covered
4.2.1.2 All openings shall be designed,
guarded, or screened from the bottom
of the gate to the top of the gate or a
minimum of 72 in. (1.83 m) above grade,
whichever is less, to prevent a 2 1/4 in. (57
mm) 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. The gate
panel shall include the entire section of the
moving gate, including any back frame or
counterbalance portion of the gate.
4.2.1.3
A gap, measured in the horizontal
plane parallel to the roadway, between
a fixed stationary object nearest the
roadway (such as a gate support post) and
the gate frame when the gate is in either
the fully open position or the fully closed
position, shall not exceed 2 1/4 in. (57 mm).
Exception: All other fixed stationary objects
greater than 16 in. (406 mm) from the gate
frame shall not be required to comply with
this section.
4.2.1.4
Positive stops shall be required to
limit travel to the designed fully open and
fully closed positions. These stops shall
be installed at either the top of the gate,
or at the bottom of the gate where such
stops shall horizontally or vertically project
no more than is required to perform their
intended function.
4.2.1.5
All gates shall be designed with
suffi cient lateral stability to assure that the
gate will enter a receiver guide. Consult
ASTM F2200 for details on various gate
panel types.

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4.2.2 Thefollowingprovisionsshall apply to
Class IV vehicular horizontal slide gates:
4.2.2.1 All weight bearing exposed rollers
8 ft (2.44 m), or less, above grade shall be
guarded or covered.
4.2.2.2 Positive stops shall be required to
limit travel to the designed fully open and
fully closed positions. These stops shall
be installed at either the top of the gate,
or at the bottom of the gate where such
stops shall horizontally or vertically project
no more than is required to perform their
intended function.
4.3 Vehicular Horizontal Swing Gates
4.3.1 Thefollowingprovisionsshall apply to
Class I, Class II, and Class III horizontal swing
gates:
4.3.2 Gatesshallbedesigned,constructedand
installed so as not to create an entrapment
area between the gate and the supporting
structure or other fixed object when the
gate moves toward the fully open position,
subject to the following provisions.
4.3.3 Thewidthofanobject(suchasawall,pillar
or column) covered by a swing gate when
in the open position shall not exceed 4 in.
(102 mm), measured from the centerline of
the pivot point of the gate. Exception: For
a gate that is not in compliance with this
provision, the defined area shall be subject
to the entrapment protection provisions of
UL 325.
4.3.4 Except for the zone specified in 3.3.3 the
distance between a fixed object such as
a wall, pillar or column, and a swing gate
when in the open position shall not be less
than 16 in. (406 mm). Exception: For a gate
that is not in compliance with this provision,
the defined area shall be subject to the
entrapment protection provisions of UL 325.
4.3.5 Class IV vehicular horizontal swing
gates shall be designed, constructed and
installed in accordance with security related
parameters specific to the application in
question.
5. Maintenance of Gate Systems
To keep your automated gate system performing
both safely and reliably it is important to ensure
that the components of that system are functioning
properly. At least monthly:
5.1
Disconnect the gate operator and manually
move the gate through its range of travel.
Note any squeaks from rollers or hinges or
areas of binding. The gate should travel
smoothly and quietly throughout its range.
If it does not, contact a gate professional to
correct the problem.
5.2
Reconnect the gate operator and perform the
following tests:
5.2.1
Withthegateopening,blockanyphoto
eyes and/or depress any safety edges used
to protect the open direction. The gate
should stop, or, stop and reverse.
5.2.2
Withthegateclosing,blockanyphoto
eyes and/or depress any safety edges used
to protect the close direction. The gate
should stop, or, stop and reverse.
5.2.3
Usingasuitableobstructioninthepathof
the gate (a solid, immovable object), run the
gate in the open direction until it contacts
the obstruction. The gate should stop and
reverse.
5.2.4
Usingasuitableobstructioninthepathof
the gate (a solid, immovable object), run the
gate in the close direction until it contacts
the obstruction. The gate should stop, or,
stop and reverse.

12
6. Entrapment Protection
The UL325 standard for gate operators requires a minimum of two independent entrapment protection
means for each entrapment zone. An entrapment zone is defi ned as follows:
For slide gates, any locations between a moving gate and a counter opposing edge or surface where
entrapment is possible up to a height of 6 ft. (1.83m) above grade. Such locations occur if at any point
in travel the gap between a moving gate and the fi xed counter opposing edges or surfaces is less than
16 in. (406mm).
Potential entrapment zones are shown below for slide gates, but keep in mind there may be other
entrapment zones presented by the actual installation and adjacent structures or landscape that must
be protected as well.
Slide Gate Potential Entrapment Zones
Entrapment Protection Inputs - Typical Installation Diagram Utilizing Photocells
Outside
Gate
Photo
Photo 2 Photo

13
All Nice gate operators feature an Inherent
Entrapment System (IES) (UL325 Type A) that
monitors the force on the gate during travel.
This system protects in both the open and
close direction and reverses on contact with an
obstruction. This IES system serves as one of the
means of entrapment protection.
External sensors must be used to protect against
entrapment at each location where an entrapment
zone exists. The minimum number of external
sensors required to enable automatic operation
of the gate operator is as follows:

Slide Gates: One sensor in the Open direction
and one sensor in the Close direction.
The gate operator tests for the presence of these
sensors, and if the required minimum number
is not found, the operator will only run using
continuous pressure on an Open/Close button,
either on the controller, or an external device.
7. Compatible External Sensors
Only the following external sensors have been
evaluated and tested with Nice gate systems and
are approved to be used for protection against
entrapment:
Nice BlueBus Through-Beam Photo Eyes
EMX IRB-RET Retro-refl ective Photo Eye
ASO Sentir Series Contact Edge
Miller Edge GEM-103 Edge Sensor Converter

EMX WEL-200 Wireless Edge Transmitter/
Receiver
7251 Control Box
Chain Bracket (2)
#10020715 U-Bolts (4)
5/16” x 3”
U-Bolts (4)
5/16” x 2”
#40 Roller Chain (35’) and Master Links (2)
#72520001
Chain Bolts (2)
#10003115
7351 Control Box
8 - 7251-7351 PARTS IDENTIFICATION

14
9.1 - POST INSTALLATION
Install two 3” diameter posts parallel to the gate as
shown. Posts must be secured in the ground as
necessary for your type of soil conditions and building
codes. Post height must be a minimum of 24” out of
the ground.
DRIVEWAY
Direction of opening
Centerline of gate
6” 24”
Inside posts
5”
Mount operator to posts at desired height using the four
supplied 3” U-Bolts and tighten into place making sure
operator is level.
9.2 - CHASSIS MOUNTING
9 - 7251 INSTALLATION

15
9.3 - CHAIN BRACKET MOUNTING
Mount chain brackets to gate frame either by using the four
supplied 2” U-Bolts or by tack welding in place.
Put the gate in the center of travel of the
opening. The gate should remain in this position
while the chain is attached to the operator.
9 - 7251 INSTALLATION
Attach the master link to one end of the chain and a chain
bolt. Then attach the chain bolt to a chain bracket. Determine
the required length of chain needed to attach the other
chain bolt and still allow adjustment. Using the proper chain
breaking tool, cut and remove the excess chain. Attach chain
to chain bolt and connect to the chain bracket.
Allow 1 inch of sag per 10 feet of chain.
Chain should be aligned with all sprockets.
Route chain through sprockets as shown. Make sure chain is
level when attached to the chain brackets.

16
10.1 - CONCRETE PAD LOCATION
DRIVEWAY
Direction of opening
Concrete Pad
12” 24”
24”
5”
Centerline of gate
Area for conduit entry
5”
14”
3”
6”
24”
Ground Level
Fabricate a concrete structure sufcient to stabilize
and mount the operator. Consult local building codes
to build a pad that meets or is sufcient for the soil
type and climate and capable of supporting the loads
imposed by the operator during operation.
Conduit requirements should be considered before
building pad.
x 4
Direction of opening
Concrete Pad
x 4
3”-5”
Set the operator on the pad and align
the sprockets 3” to 5” from the inside
surface of the gate.
Mark the four mounting holes on the
pad, remove the operator and drill the
holes according to the anchor bolt
manufacturers instructions.
Replace the operator and anchor to
the pad using (4) 1/2” anchor bolts as
shown.
10.2 - CHASSIS MOUNTING
10 - 7351 INSTALLATION

17
10.3 - CHAIN BRACKET MOUNTING
Mount chain brackets to gate frame either by using
the four supplied 2” U-Bolts or by tack welding in
place.
Put the gate in the center of travel. The gate
should remain in this position while the chain is
attached to the operator.
10 - 7351 INSTALLATION
Attach the master link to one end of the chain and a chain
bolt. Then attach the chain bolt to a chain bracket. Determine
the required length of chain needed to attach the other
chain bolt and still allow adjustment. Using the proper chain
breaking tool, cut and remove the excess chain. Attach chain
to chain bolt and connect to the chain bracket.
Allow 1 inch of sag per 10 feet of chain.
Chain should be aligned with all sprockets.
Route chain through sprockets as shown. Make sure chain is
level when attached to the chain brackets.

18
12 - INCOMING POWER WIRING
Power input connections should be wired as follows:
Solar panel
Connect wires to the solar panel terminal block. The positive
wire of the panel connects to the left terminal marked “+”.
Note: If the panel is connected backwards a red LED will
illuminate below the terminal. If solar power is to be used it
will be necessary to program control board for STANDBY
operation. See section 16 for information on STANDBY
mode.
Battery
Connect wires to the battery terminal block. The positive wire
of the battery connects to the left terminal marked “+”. Note:
If the battery is connected backwards a red LED will illuminate
below the terminal.
Main DC Power - This terminal block is for incoming 10-
32VDC power only!
Connect wires to the main DC power terminal block. Positive
of the power supply connects to the left terminal marked “+”.
Note: If supply is connected backwards a red LED will
illuminate below the terminal. If supply is connected properly a
green LED will illuminate. See 120VAC wiring section for more
options.
SOLAR
PANEL BATTERY MAIN DC
POWER
+ -
11 - CIRCUIT BOARD LAYOUT
+-
MAIN DC POWER 30A FUSE MOTOR
SERIES 1050
MOTOR 2
BATTERYSOLAR P.
OXI/A Receiver
UL325 Compliant Monitored Safety Devices(s) required.
Accessory
Output
Connections
Power Input
Connections
Motor Output
Connections
BlueBus
Connection
Master / Slave
Connection
Accessory Input Connections
Earth Ground
Note: Main DC Power input is typically only used on our
commercial operators. No connection is required on the
7251/7351 system.
MAIN DC POWER

19
RIGHT-HAND GATE
LEFT-HAND GATE - FACTORY DEFAULT
Limit switch wiring
Connect the motor cable to the 5-pin connector as shown below.
Motor wiring
Connect the motor leads to the 3-pin connector as shown below. Note: If the gate moves in the opposite direction from what is
expected, reverse the motor wiring from what is shown. (Black to Pin 1, Red to Pin 3).
Single and Dual wiring
For a single installation install the 5 and 3-pin connector into the connection labeled “Motor 1” on the controller as shown.
For a dual gate installation install the 5 and 3-pin connector for the left-hand gate (operator on the left viewed from the secure side)
into the connection labeled “Motor 1”. For the right-hand gate, install the 5 and 3-pin connector into the connection labeled “Motor
2”.
Note: (Motor 1) - Make sure motor lead connector is plugged in below the limit 5 pin terminal connector
13.1 - LIMIT AND MOTOR WIRING
ORANGE
WHITE
GREEN
DO NOT USE
BLACK
RED
MOTOR 1
7251-7351 - RIGHT-HAND GATE
WHITE: Close Limit
ORANGE: Open Limit
GREEN: Limit Common
7251-7351
LIMITS
7251-7351
MOTOR LEADS
NOTE: If gate moves in opposite
direction from what is expected,
reverse the motor power lead
wiring.
WHITE
ORANGE
GREEN
DO NOT USE
RED
BLACK
MOTOR 1
7251-7351 - LEFT-HAND GATE
WHITE: Close Limit
ORANGE: Open Limit
GREEN: Limit Common
7251-7351
LIMITS
7251-7351
MOTOR LEADS
NOTE: If gate moves in opposite
direction from what is expected,
reverse the motor power lead
wiring.
WHITE: Close Limit
ORANGE: Open Limit
GREEN: Limit Common
MOTOR 1 MOTOR 2
WHITE
ORANGE
GREEN
GREEN
WHITE
DO NOT USE
7251-7351 DUAL MOTOR
RED
BLACK BLACK
RED
7251-7351
LIMITS
LEFT-HAND
7251-7351
LIMITS
RIGHT-HAND
7251-7351
MOTOR LEADS
7251-7351
MOTOR LEADS
ORANGE

20
13.2 - SETTING THE LIMIT SWITCHES
OPEN LIMIT
Green OPEN LED
1.Using the OPEN button on the front of the Control Board,
hold the button down until the gate reaches the fully
intended open position.
2.Adjust the Open Limit on the operator until the GREEN
light illuminates on the front of the control board as shown
above. The fully OPEN limit switch is now set.
Note: If red LED illuminates, reverse orange and white limit
wires
MOTOR 1 LED - GREEN MOTOR 2 LED - GREEN
CLOSE LIMIT
Red CLOSE LED
3.Using the CLOSE button on the front of the Control
Board, hold the button down until the gate reaches the
fully intended closed position.
4.Adjust the Closed Limit on the operator until the RED light
illuminates on the front of the control board as shown
above. The fully CLOSED limit switch is now set.
MOTOR 1 LED - RED MOTOR 2 LED - RED
The limit adjustments are located inside the control box between
the circuit board and motor assembly as shown.
Increase
travel for
movement to
the left
Decrease
travel for
movement to
the left
Increase
travel for
movement to
the right
Decrease
travel for
movement to
the right
Limit adjustment
knob for left
movement
Limit adjustment
knob for right
movement
Limit adjustment knob
for left movement
- Increase travel
- Decrease travel
Limit adjustment knob
for right movement
- Decrease travel
- Increase travel
Limit adjustment
assembly
NOTE: The control board is already in the “LEARN
MODE” when shipped. You are in LEARN MODE if the
word “ENTER” is ashing below “LEARN”.
If the board is not in “LEARN MODE”, press:
FUNCTION OK SWING OK LIGHT  OK
AVERAGE
HEAVY
You are in LEARN MODE if “ENTER” is ashing.
For dual gate installations - set one motor at a time.
Limit adjustment
assembly