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Installation Instructions 

 
 

Although each Door Operator has been fully inspected and tested prior to shipment, assure that no 
physical damage has occurred during shipping and handling. 

Premature failure

 

may occur if any part of 

the installation is not done properly.

  

  

1.  To install the 

NB-4120-1 Double Belt

 refer to 

NB-4120-1M

.    

2.  Install the 

Left Door Attachment (upper/outer belt)

 and 

Right Door Attachments (lower/inner 

belt) 

as indicated on drawing 

NB-4120-1P.  

Assure the belt centerlines are parallel with the track 

centerlines (shim as required) within (+/-) 1/16” over track length. 

3.  Before mounting the 

Take-Up Frame

, use a string or the timing belt to check the belt centerline 

from the door attachments to each pulley centerline on the Take-Up Frame.  Minor adjustment can 
be made by loosening the shaft collars and moving the take-up shaft from side to side.  Install 

Take-Up Frame 

per 

NB-4120-1B

.     

4.  Before mounting the 

Gear Motor Bracket

, use a string or the timing belt to check the belt centerline 

from the door attachments to each pulley centerline on the Gear Motor Bracket.  Minor adjustment 
can be made by loosening the shaft collars and moving the Gear Motor shaft from side to side.  
Install the 

Gear Motor Bracket

 as shown on drawings 

NB-4120-1M

 and 

NB-4120-1D.

     

5.  Verify the 

Take-up End Pulleys

 are adjusted in the direction toward the 

Gear Motor Pulleys

 as 

much as possible by backing off the threaded rod.   

6.  Assure both doors are in the closed position before attaching the side of the H x 2.0” timing belt 

marked 

“Take-Up Side/Right Door”

 to the 

Right Door Attachment (lower/inner belt)

 closest to 

the take-up side.  Secure the belt with (1) of the 

Clamp Plates

 and the mounting hardware supplied 

per 

NB-4120-1P

, making sure to tighten the (4) mounting bolts with an alternating sequence in 

order to equalize the clamping pressure. 

7.  Taking out the slack, pull the 

Take-Up Side

 of the belt around the 

Take-Up Pulley

 and work toward 

the 

Gear Motor End

.  Use a C-clamp to temporarily secure the belt to the 

Take-Up Pulley

8.  Pull the belt around the 

Gear Motor Pulley

 taking out all the slack.  Use another C-Clamp to 

temporarily secure the belt to the Gear Motor Pulley. 

9.  Attach the other side of the H x 2.0” timing belt marked 

“Gear Motor Side/Right Door”

 to the 

Right Door Attachment

 

(lower/inner belt)

 closest to the Gear Motor End. Secure the belt as 

described in Step 6. 

10. Remove the C-clamps attached to the Take-Up Pulley and Gear Motor Pulley. 
11. Assure the belt teeth are fully engaged into their respective pulleys.  Adjust the take-up end 

threaded rods as required.  Adjust the Gear Motor End by shimming (shim pack included) the 
bracket at the mounting surface.  

12. 

Pre-Tension

 the belt enough to move the Right Side door to the open position by tightening the 

take-up end adjusting rods in an alternating fashion. 

13. Move the Right Side Door to the open position manually by using a chain wrench on the shaft 

collars. (a wrench with sufficient leverage is required) on the Gear Motor Output shaft.  If you prefer 
to move the door to the open position under power at very low speed, skip to step 16 then go back 
to step 14 

14. After the door has been moved to the full open position, the timing belt can be adjusted for 

full Pre-

Tension

. The correct 

Pre-Tension

 in the belt has been set when measuring the force (F) to deflect 

the belt 1.0” at mid-span per the formula in Parameters Section. 

15. While the Belt Idler has been pre-set to tension the slack side of the Gear Motor Pulley at the 

factory, it is recommended that the Pre-Tension on the Belt Idler be checked by the same method 
as in Step 14 and adjusted if required. 

   
 

Summary of Contents for NB-4120- 2M3

Page 1: ... For All Door Operator Model Numbers for Swinging and Sliding Doors SWINGING AND SLIDING DOOR OPERATORS FOR LEAD SHIELDED DOORS ...

Page 2: ...brookfield industries inc NB 4120 1 and NB 4120 2 Bi Parting COMMERICAL INDUSTRIAL SLIDING DOOR OPERATOR MANUAL 3rd Edition 06 09 14 US Patent No 6 177 771 B1 ...

Page 3: ...agnostics I O NB 4120 1 Double Belt Drawings NB 4120 1B NB 4120 1D NB 4120 1M NB 4120 1P NB 4120 2 Single Belt Drawings NB 4120 2C3 NB 4120 2E2 NB 4120 2M3 NB 4120 2P2 Terminal Strip Hookup Legend Power Supply and Class 2 Voltages Wiring Diagrams Parameters Maintenance Intervals Safety Systems Limited Warranty Sliding Door Operator Troubleshooting ...

Page 4: ...pecified in this manual and as required by any local codes Proper installation can also reduce the risk of electrical shock fire or explosion Locate activation switches or push button stations a within sight of the door b at a minimum height of 5 so small children cannot reach and c away from moving parts of the door Install the Entrapment Warning Placard next to the activation switches in a promi...

Page 5: ...it is attached to 2 Assure that all fingers hands feet limbs and articles of clothing are clear of all moving parts and pinch points Personnel should keep away from a door in motion and keep the moving door in sight until it is completely closed or open NO ONE SHOULD CROSS THE PATH OF A MOVING DOOR Test the door s safety features at least once a month After adjusting either the force speed or the ...

Page 6: ...trol parameters being correctly set the NB 4120 will provide many years of maintenance free service This power open power close electro mechanical operator with its state of the art components make it the strongest most reliable and easiest to install in the industry today Refer to the Wiring Legend for Terminal Strip Hookup for all open close stop and External Safety Device inputs which are all C...

Page 7: ...Section 30 2 Fail Safe Self Monitoring These devices are door mounted 4 wire reversing edge contact type sensors that reverse the door while closing Note The door will not be allowed to close unless these sensors are correctly wired per this manual When installing contact type sensors assure that they are properly secured to the leading edge of the door and that a sufficient quantity of sensors ar...

Page 8: ...ate from zero to full speed To increase acceleration time rotate clockwise The DEC B Deceleration trimpot sets the amount of time to decelerate from full speed to zero speed To increase deceleration time rotate clockwise The MIN Minimum Speed trimpot sets the minimum motor speed To increase the minimum speed rotate clockwise The MAX Maximum Speed trimpot sets the maximum motor speed To increase th...

Page 9: ...otor control and 110VAC power supply circuits are individually equipped with in line circuit breakers for motor overload protection Surge protection and filtering of the supply voltage is featured to protect door operator components and to assure reliable performance immunity as well as minimizing RF noise emissions Current Consumption AC Line Input Maximum current phase 10 amps ...

Page 10: ... 1P making sure to tighten the 4 mounting bolts with an alternating sequence in order to equalize the clamping pressure 7 Taking out the slack pull the Take Up Side of the belt around the Take Up Pulley and work toward the Gear Motor End Use a C clamp to temporarily secure the belt to the Take Up Pulley 8 Pull the belt around the Gear Motor Pulley taking out all the slack Use another C Clamp to te...

Page 11: ... rods 24 Adjust Open and Close trimpots clockwise toward the maximum setting in an incremental fashion after each cycle 25 Adjust back check and latch check trimpots as required 26 Adjust PLC door position factory presets as required until full travel is obtained Refer to the Door Position Setup and DAU Instructions and the NB 4120 parameters sheet if necessary 27 Be prepared to hit stop button ca...

Page 12: ... Use another C Clamp to temporarily secure the belt to the Gear Motor Pulley 9 Attach the other side of the H x 2 0 timing belt marked Gear Motor Side Right Door to the Right Door Attachment lower belt closest to the Gear Motor End Secure the belt as described in Step 7 10 Remove the C clamps attached to the Take Up Pulley and Gear Motor Pulley 11 Assure the belt teeth are fully engaged into their...

Page 13: ...check trimpots as required 27 Adjust PLC door position factory presets as required until full travel is obtained Refer to the Door Position Setup and DAU Instructions and the NB 4120 parameters sheet if necessary 28 Be prepared to hit stop button case any obstacles are encountered 29 Connect ampere meter in series with one of the phases between the Motor Control and the Motor Measure and record ma...

Page 14: ...n the next screen 5 You ll be given a display of the first three user presets To edit a preset simply touch the preset number value 6 You ll then be given a keypad display for entering the new preset Enter the desired value and touch the enter back arrow key to set the value Press ESC to cancel and go back to the preset list 7 Press Next to display the remaining user presets Note Real Time Door Po...

Page 15: ...and plug the opposite ROUND end into the receptacle on the end cover of the operator right side 3 For GT 01 software prior to Ver 3 the screen in Fig 3 will display Choose either ʻStandardʼ or ʻMain Subʼ operator For Ver 3 of the GT 01 software the screen in Fig 4 will display For Main Sub select ʻLead Door ʻor ʻFollow Doorʼ on the next screen Fig 5 then skip to step 5 Fig 2 Fig 3 Fig 4 Fig 5 4 Se...

Page 16: ...9 Select ʻInputsʼ to display the Input Diagnostic Screen Fig 10 Fig 10 The buttons down the left side represent an actual input to the PLC All standard Operator functions can be tested using these buttons The lamps down the right side of the screen indicate when an actual ʻhardʼ input is being read by the PLC E g if a Wall Switch or other device is sending an input the applicable lamp will be lit ...

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Page 25: ...AL SAFETY DEVICES COMPLIANT WITH UL 325 SECTION 30 2 ENTRAPMENT PROTECTION FAIL SAFE SELF MONITORING DOOR MOUNTED 4 WIRE REVERSING EDGE CONTACT TYPE SENSOR SEE WIRING DIAGRAM REVERSES A CLOSING DOOR WIRE ONE SIDE OF N O SWITCH TO TERMINAL FS1 AND FS3 WIRE OTHER SIDE TO TERMINAL FS2 AND FS4 ADDITIONAL REDUNDANT EXTERNAL SAFETY DEVICES THAT ARE FRAME MOUNTED NON CONTACT TYPE PRESENCE SENSORS REVERSE...

Page 26: ...NB 4120 1 2 3 15 15 15 N L1 L2 L3 A D Converter PLC Unit Power Supply 110 220 VAC Line Filters 220 VAC Surge Protectors Multi Speed Board AC Inverter DO818 Note 1 Note 2 FS2 FS1 Panasonic 1 1 1 1 A2 1 4 24V 1 2 1 1 A1 Reference Page 2 for Notes and Presence sensor reversing edge wiring 208 230 VAC 3 Phase 4 wire G N D 3 L1 L2 L3 N N N N L1 L2 L3 N 15 16 N N N Position Transducer DO165 1 10 turn 4 ...

Page 27: ...icating Light A2 1 4 24V 1 2 1 1 A1 to X3 input on PLC Notes 1 Use 15 Amp 250 VAC Circuit Breaker 2 Use 1 Amp 250 VAC Circuit Breaker 3 Class 2 24 VDC Terminals Power Supply Com 3 Inputs 9 14 19 20 4 All 110 AC wires shall be minimum 14 AWG 105 C 300 V 5 All 12 24 VDC non motor wires shall be minimum 20 AWG 105 C 300 V 6 All motor wires shall be miimum 12 AWG 105 C 300 V and 25 max length 7 All 23...

Page 28: ...ng 21 3 digital values in Real Time door position Absolute position Rotary Position Transducer Setting 320 digital value door closed position Motor Control Settings Multi Speed Board KB 9503 Jumper Settings J1 50 60 Hz PRESET 1 Latch check Speed Lo R F Hi PRESET 2 Back check Speed Lo R F Hi PRESET 3 Close Speed Lo R F Hi PRESET 4 Open Speed Lo R F Hi Trimpot Settings PRESET 1 Latch check REV Speed...

Page 29: ...the operator 180 degrees by placing the motor end to the transducer end and the transducer end to the motor end Method 2 1 With the door in the new home or closed position reset the Rotary Position Transducer to 320 2 On the Rotary Position Transducer Move the green and white wire to terminal 1 and the black wire to terminal 3 3 On the AC Inverter reverse the appropriate wires to the AC 3 phase mo...

Page 30: ... Do not use the operator if any component is worn or damaged Safety Systems Test Intervals Reversing edge safety sensors presence sensors and other external devises that are not normally supplied by the manufacturer of the door operator but added during installation must be properly tested on a frequent enough basis so as not to compromise the safety and reliability of the complete door operating ...

Page 31: ... and the consumer must agree upon the dollar amount as well as the scope of work before any amount is allocated This amount may vary depending on the geographical location of the labor market Travel expenses are not applicable 4 brookfield industries inc shall not cover nor will the consumer have any benefits under this limited warranty if any of the following conditions apply to any returned part...

Page 32: ...functioning YES Check Replace Push plate Adjust current limit per step 16 of installation procedure Check that wiring transducer A D converter are secure Check wiring from terminal strip to PLC Adjust linkage per step 5 of installation procedure RTDP reads 4000 doesn t change Turn up forward speed pot Assure power to A D Converter OR Assure green white wire is connected properly at transducer PLC ...

Page 33: ...PLC Output relay not working Replace PLC if relays are not making Enable jumper on KB motor control is missing Rev E series above Replace jumper Screws on Blue terminal block on KB motor control are not secure Rev E series above Tighten set screws 1 2 turn past snug Troubleshooting Guide Check Transducer A D converter wiring for securness A D Converter or transducer is damaged ...

Page 34: ...o manufacturer for program to be cleared Door moves 1 2 open with full open signal is given and RTDP reads full open Dipswitch 4 must be ON and all others OFF No power light no 24 VDC output Replace DO127 Power Supply Door shuts off at frame oscillates AND OR continues to try and AutoClose and will not open unless given a slight push Door is resting against frame ABOVE the AutoClose preset Rotate ...

Page 35: ... PLC power light dims and DAU may not power up Power to operator isn t sufficient check for voltage underload DAU or Cable is bad check cable Phoenix connector connections No 5 VDC from PLC check for voltage at Phoenix connector ALL presets and RTDP values read zero PLC Run Program switch is in Prog position Move switch to Run position Altered presets don t appear to set and or go to zero after po...

Page 36: ...urrent Limits are set too low for door installation conditions Adjust RCL FCL NOTE These adjustment pots are not intended to fix poor installations Failure to have a properly installed door may cause personal injury violate the entrapment feature of the operator and may void the operator warranty insure that the door is installed and operates properly without the door operator attached Motor Hum o...

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