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Chamberlain LiftMaster Professional SW420, Owner'S Manual

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Chamberlain LiftMaster Professional SW420 Owner'S Manual Download Page 23

23

CONTROL BOARD PROGRAMMING AND FEATURES

MOTOR LEARN FUNCTION (FORCE PROFILE)

This function is preprogrammed at factory. If either board or 
motor is replaced, the controller will need to be programmed to 
“LEARN” the specific motor RPM profile of your operator. Switch 
“S3” is provided for this. This is important for accurate force 
control. Failure to do so may result in improper and unsafe 
operation.

To learn the motor:

NOTE:

 Motor Learn must be performed in stand alone mode.

1.  The operator must remain attached to the gate throughout the 

entire process.

2.  Press the motor learn button. The yellow LED should start to 

flash rapidly.

3.  Install a jumper on either the hard open or the hard close input 

terminals. The motor will run for a few seconds and then stop. 
If the LED goes out the motor is learned. If the unit activates a 
limit before completing the learn or some other error occurs 
the LED will go back to on continuously. If this happens try 
learning while running in the opposite direction.

  

NOTE:

 It is important that the jumper is in constant contact 

while the gate is moving in learn mode.

FORCE CONTROL

Set the force control pot such that the unit will complete a full 
cycle of gate travel but can be reversed off an obstruction without 
applying an unreasonable amount of force. On most operators 
this will be around the middle of the range.

NOTE:

 For LED location refer to illustration on previous page.

DIAGNOSTICS (LEDS AND CODES)

There are three diagnostic LEDs. Two red LEDs (OLS, CLS) are 
indicators for the open and close limits. The LEDs are illuminated 
when the limit switch contacts are closed.

The third amber LED (DIAG) is used to blink out diagnostic 
codes. The number is the count of the number of times the LED 
is on in an 8 second period. The LED is on for approximately 1/2 
second and repeats every second until the number is reached. 
There will be a pause following each pulse cycle (1-6 pulses) to 
differentiate between the different diagnostic codes.

MOTOR LEARN BUTTON

FORCE CONTROL

A D J U S T M E N T

LED Code 

Diagnostic Meaning 

Cleared By

Flashed

 

OFF Normal 

operation 

N/A

 

1 

 Single entrapment sensed 

Control Input

 

2 

Double entrapment 

 Hard Input*

 

3 

Failed or no hall 

Removal of

  

effect 

sensor 

problem

 

4 

Exceed maximum motor 

Hard Input*

  

run 

time

 

5 

Limit fault 

 Control Input

 

6 

Loss of communications 

Removal of

 

 

 between master and 

problem

second during run mode

  On No 

Motor not learned 

Completion

 Flash 

 

 

of 

Motor 

Learn Routine

* Hard inputs include open override, close override and 

stop inputs.

Max

Min

Force Control

Motor
Learn
Button (S3)

Summary of Contents for LiftMaster Professional SW420

Page 1: ...DED FOR PROFESSIONAL INSTALLATION ONLY VISIT WWW LIFTMASTER COM TO LOCATE A PROFESSIONAL INSTALLING DEALER IN YOUR AREA THIS MANUAL IS TO BE LEFT WITH THE PROPERTY OWNER MODEL SW420 LIGHT DUTY SWING GATE OPERATOR Serial ________________________ located on electrical box cover Installation Date__________________ 2 YEAR WARRANTY ...

Page 2: ...ght certain safety related issues These instructions are not intended to be comprehensive Because each application is unique it is the responsibility of the purchaser designer installer and end user to ensure that the total gate system is safe for its intended use CARTON INVENTORY Before beginning your installation check that all components were supplied and received undamaged Refer to list below ...

Page 3: ... Maximum Gate Starts 10 hr Maximum Gate Weight 300 lbs 136 1 kg Maximum Gate Width 12 ft 3 7 m 11 5 8 18 3 16 1 3 8 1 3 8 1 3 8 14 5 8 11 5 8 3 3 16 3 3 16 11 5 8 3 3 16 1 1 2 5 8 18 3 16 18 3 16 11 3 4 11 3 4 3 Nominal Post Mount standard Pad Mount optional Pedestal Mount optional 12 Max 3 3 16 ...

Page 4: ...nd 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 entrapm...

Page 5: ...oto eye for close cycle Shadow Loop Shadow Loop Photo eye for close cycle Run twisted wire from loop to operator Run twisted wire from loop to operator Seal Loops Seal Loops Gate 2 1 1 2 37 mm 1 1 2 37 mm 1 4 6 mm or larger depending on loop wire size 1 4 6 mm or larger depending on loop wire size Loop Wire Layer COMPLEX OR PARKING LOT COMPLEX OR PARKING LOT Interrupt Safety Loop Interrupt Safety ...

Page 6: ...st 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 cont...

Page 7: ...ationary 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 inches 57 mm refer to ASTM F2200 for Exception 3 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 ga...

Page 8: ...ERTISSEMENT WARNING WARNING CAUTION WARNING WARNING To prevent SERIOUS INJURY or DEATH from a moving gate Entrapment protection devices MUST be installed to protect anyone who may come near a moving gate Locate entrapment protection devices to protect in BOTH the open and close gate cycles Locate entrapment protection devices to protect between moving gate and RIGID objects such as posts A swingin...

Page 9: ... the 2 sets of holes nearest to the rear side of the cabinet If mentioned holes are used the upper rear holes are larger than the other holes This is because a special nut is required for the U bolt in these holes due to an inaccessibility of tools inside the cabinet in the area of these holes 4 Insert the U bolt Nut through the cabinet wall from the inside and onto the leg of the U Bolt This nut ...

Page 10: ...e hardware provided 5 Secure the operator to the concrete pad It is very important that the operator be level and square to the gate Figure 1 Figure 2 I N S T A L L AT I O N 26 3 4 14 3 4 19 19 6 6 Gate Pivot Gate Pivot Fence Line Fence Line 1 2 Concrete Anchor Bolts Parallel Mount Perpendicular Mount 6 1 2 18 1 2 18 x30 Pad Minimum 1 2 12 7 mm Concrete Anchors 4 Required Depth Required By Local C...

Page 11: ... the pedestal by dropping it onto the pedestal and allowing the mounting studs to slip through the holes on the pedestal brackets Secure with hex nuts provided Figure 1 Figure 2 I N S T A L L AT I O N 26 14 26 14 Fence Line Hinge Pin Pivot Gate Fence Line Hinge Pin Pivot Gate Parallel Mount Pedestal 24 Deep In Ground Minimum Power and Control Wiring Should Be Run In Separate Conduit Pedestal Mount...

Page 12: ...lly closed position and extend the arm assembly out to the closed gate Mark the point on the gate where the gate bracket will mount to the gate 8 The gate bracket must be installed on a structural member of the gate If require install a horizontal support on the gate at the appropriate height 9 Attach the gate bracket with U bolts or by welding Figure 2 Figure 1 12 I N S T A L L AT I O N If the ar...

Page 13: ...he hairpin cotter and then the clevis pin and allowing the manual release pin to drop down through the hub The arm should now be free and the gate can be opened and closed normally NOTE If desired a padlock can be used in place of the clevis pin to hold the manual release pin in place Figure 1 I N S T A L L AT I O N Drive Hub Control Arm Clevis Pin Hairpin Cotter Release Pin ...

Page 14: ... MUST be made by a qualified individual 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 powe...

Page 15: ... and is to be wired within line of sight of the gate The operator will not function unless this circuit is completed 2 Wire control station to terminals 3 and 5 in the control box on the operator FIELD WIRING TERMINALS STOP RESET Button Control Conduit STOP RESET STOP RESET BUTTON WIRING R1 R2 R3 R4 3 5 W I R I N G SINGLE PHASE All single phase operators will have the following 115V 208 230V L1 NE...

Page 16: ...ntrol codes Press and hold the learn button on the receiver panel until the indicator light turns off about 6 seconds All remote control codes are now erased Then follow the steps above to reprogram each remote control 16 M M NOTICE To comply with FCC and or Industry Canada IC rules adjustment or modifications of this receiver and or transmitter are prohibited except for changing the code setting ...

Page 17: ...TCH 8 Turn on power Press OPEN button if installed or connect terminals 5 7 on J1 terminal strip Gate should open If gate does not open the open limit cam may be already actuating open limit switch or an improper electrical connection may have been made Turn off power inspect correct and repeat this step 9 When gate reaches desired fully open position press STOP button or release terminals Turn of...

Page 18: ... the hall bracket to the frame 2 Adjust the bracket so that the sensor is a Parallel with the pulley b 020 051 cm away from the pulley s magnet Use a feeler gauge to measure the distance 3 Tighten screws to secure assembly 4 Manually rotate pulley to ensure that each magnet clears the sensor board If a magnet does not clear the board re adjust the RPM hall effect assembly accordingly A D J U S T M...

Page 19: ...Use a timer to close system to automatically close the barrier gate after a preset amount of time or b Use a loop system to close the barrier gate after the vehicle has passed through the SAM system 4 Once the barrier gate is closed the slide or swing gate will activate its internal timer to close and begin closing 5 If another authorized vehicle accesses the SAM system before the slide or swing b...

Page 20: ... the open limit J1 Terminals 2 5 Shadow Loop Input These terminals are intended for use with a loop detector and is primarily used on swing gate operators This input protects cars by preventing the gate from moving off of the open or close limit when the shadow loop input is active J1 Terminals 6 5 Soft Open These terminals are intended for use as a general open control Accessories that may be wir...

Page 21: ...reset button or the stop control of a three button station that is installed within line of site of the gate This input functions to stop the gate or to reset the gate after an entrapment fault NOTE This input uses a normally closed circuit and the operator will not run until a stop control is installed J1 Terminals 4 5 Hard Close Control Input These terminals are intended for use only with the cl...

Page 22: ...LEDs J5 Connector SAMS J2 Connector J3 Connector Aux Relay Drive not used Motor Learn Button Programming Port factory use only Limit LEDs Main Terminal Wiring Potentiometer Timer to Close Dip Switch 4 Master Second J4 Connector Master Second Diagnostic LED Dip Switch 2 Dip Switch 1 Potentiometer Force Adjustment ...

Page 23: ... cycle of gate travel but can be reversed off an obstruction without applying an unreasonable amount of force On most operators this will be around the middle of the range NOTE For LED location refer to illustration on previous page DIAGNOSTICS LEDS AND CODES There are three diagnostic LEDs Two red LEDs OLS CLS are indicators for the open and close limits The LEDs are illuminated when the limit sw...

Page 24: ... LEDS There are 9 troubleshooting LEDs LED LED NAME DESCRIPTION D11 Radio On when Radio switch is activated D13 Shadow On when Shadow Loop is activated D15 Hard Close On when Close switch is activated D17 Green Stop On when Stop switch is not activated D19 Soft Open On when Open switch is activated D21 Hard Open On when Open switch is activated D24 Interrupt Safety Loop On when Interrupt Safety Lo...

Page 25: ...1 2 3 4 ON SAVE TTC ON S1 RT LT SW SL APEMs ON CLED PH OPED PH 1 2 3 4 WARN MAG ON S2 ON CLED PH OPED PH 1 2 3 4 WARN MAG ON S2 ON CLED PH OPED PH 1 2 3 4 WARN MAG ON S2 ON CLED PH OPED PH 1 2 3 4 WARN MAG ON S2 1 2 3 4 ON SAVE TTC ON S1 1 2 3 4 ON SAVE TTC ON S1 RT LT SW SL RT LT SW SL PROGRAM SETTINGS DIP SWITCH S1 NOTE For all S1 S2 and S4 switch settings to take effect the Save Mode switch mus...

Page 26: ... of a second unit for a time period of one second If the master gets no response the operator will operate in a stand alone mode NOTE For single unit applications a jumper must be placed between 11 and 12 of the field wiring terminal block In this mode no further communications will take place during travel If the master detects the presence of a second unit the master will continue to query the s...

Page 27: ...high voltage power is good and the low voltage power is bad check transformer wiring and replace transformer No LEDs illuminated on the control board If both primary and secondary power is good check to make sure that the J2 connector is making good contact with the pins on the board If all is good replace the control board The relays chatter when the operator begins to move Low secondary low volt...

Page 28: ...y as possible without coming into contact with them or the pulley Replace the sensor if it is adjusted correctly but continues to fail The operator opens immediately upon power up and does not close Check the red input status LEDs D11 D31 for indication of an active or malfunctioning accessory If any red LEDs are on check the corresponding input An installed accessory may be wired incorrectly or m...

Page 29: ...n the operator as needed 6 It is suggested that while at the site voltage readings be taken at the operator Using a Digital Voltmeter verify that the incoming voltage to the operator it is within ten percent of the operators rating IMPORTANT SAFETY INSTRUCTIONS To reduce the risk of SEVERE INJURY or DEATH 1 READ AND FOLLOW ALL INSTRUCTIONS 2 NEVER let children operate or play with gate controls Ke...

Page 30: ...5 OR OR FIELD WIRING FIELD WIRING GL CONTROL BOARD GL CONTROL BOARD 24VAC IN 24VAC IN 24VAC COMMON 24VAC COMMON SOFT OPEN SOFT OPEN B LIMIT B LIMIT CONTACTOR B CONTACTOR B RADIO COMMAND RADIO COMMAND SHADOW SHADOW 24 VDC 24 VDC CLOSE CLOSE STOP STOP SOFT OPEN SOFT OPEN HARD OPEN HARD OPEN INT LOOP INT LOOP OBS OPEN OBS OPEN OBS CLOSE OBS CLOSE 24 VAC COMMON 24 VAC COMMON DC GND DC GND LOCK 1 LOCK ...

Page 31: ...et 2 E9 Control Box 1 E10 Tie Wrap 14 2 E11 Aluminum Standoff 1 E12 Nylon Standoff 2 E13 Terminal Strip Insulator 2 E14 Tinnerman Nut 5 E15 Plastic Card Guide 6 1 INDIVIDUAL PARTS ITEM PART DESCRIPTION QTY 1 74 18465 Housing Assembly 1 2 10 18462 Front Cover 1 3 10 G0326 Switch Box Cover 1 4 23 3001 DPST On Off Switch 1 5 Conduit Box 1 6 65RSWD Pad Mount Kit 1 7 65RSWP Pedestal Mount Kit 1 8 76 G0...

Page 32: ...S D10 A4 A6 A5 1 8 A7 A7 A3 A7 A2 D9 D12 A1 E5 D8 E2 E11 E7 D15 D13 E15 E12 D5 D1 D23 D18 D6 A9 A12 D21 D22 9 D3 D16 4 5 2 7 6 Optional Optional E8 E8 D14 D17 D19 D20 D2 D7 E3 E4 E13 E6 3 D11 A8 A11 A10 A11 E1 E10 E14 E14 E9 D4 A E D ...

Page 33: ... EDGES MODEL DESCRIPTION G65MG0204 Miller MG020 2 wire electric edge for gates Sensitized on three sides Requires mounting channel 4 1 2 m long G65MG0205 Miller MG020 2 wire electric edge for gates Sensitized on three sides Requires mounting channel 5 1 5 m long G65ME12C5 Mounting Channel 5 1 5 m long G65MGR205 Miller MGR20 2 wire electric edge in 5 1 5 m lengths for 2 5 cm round post G65MGS205 Mi...

Page 34: ...ration All inputs are normally open and momentary except the stop N C The following instructions are based upon UL325 and include recommendations for significant increase in safety We strongly recommend that you follow the UL guidelines presented throughout the manual Installation device instructions always follow the instructions provided by the manufacturer when installing and adjusting any cont...

Page 35: ...35 O P E R AT O R N O T E S ...

Page 36: ...le option ALL IMPLIED WARRANTIES FOR THE PRODUCT INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO THE TWO YEAR LIMITED WARRANTY PERIOD SET FORTH ABOVE AND NO IMPLIED WARRANTIES WILL EXIST OR APPLY AFTER SUCH PERIOD Some States do not allow limitations on how long an implied warranty lasts so the above limitation ...

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