Honeywell ML6131 User's Manual
Contents
1. 8 Checkout enine e e Ane retain 8 Copyright 2000 Honeywell Inc All Rights Reserved 63 2498 2 ML6131 DIRECT COUPLED ACTUATOR SPECIFICATIONS Models ML6131B 6 Ib in torque selectable 45 60 and 90 stroke in both cw and cew directions 15 second timing spat Floating Series 60 includes auxiliary potentiometer drive for use with field addable feedback potentiometer Includes minimum position adjustment setscrews for cw or ccw operation Includes 4074ENJ Bag Assembly Dimensions See Fig 1 Electrical Ratings Input Voltage 24 Vac 20 50 60 Hz Power Consumption Maximum at 24 Vac 2 2W 0 095A 2 4 VA Ambient Ratings Operating Temperature 32 F to 130 F 0 C to 54 C Shipping and Storage 20 F to 120 F 29 C to 49 C Humidity 5 to 95 RH noncondensing Torque Ratings See Table 1 Minimum Life Cycle Rating 400 000 Repositions 1 5 million Actuator Timings At 50 Hz Nominal 90 18 sec 60 12 sec 45 9 sec Actuator Timings At 60 Hz Nominal 90 15 sec 60 10 sec 45 7 5 sec Damper Shaft Mounting e Suitable for mounting onto 3 8 to 1 2 in square or round damper shafts secured by two 1 4 in 28 NF Allen screws e Minimum damper shaft length 1 3 4 in 45 mm e Actuator may be mounted with actuator shaft in any position ORDERING INFORMATION Feedback Potentiometer Ratings ML6131B 200976A C Electrical Rating 24 Vac 50 60 Hz 2 25 watts Re2. step 1 THIS SETSCREW CORRESPONDS WITH CLOSING IN THE THIS SETSCREW CW DIRECTION CORRESPONDS WITH CLOSING IN THE CCW DIRECTION M10247 Fig 8 Setscrew location for ML6131 CAUTION Equipment Damage Hazard Improper hub positioning or hole selection can permanently damage the device Avoid backdriving the actuator with the setscrew Remove the red cap from the desired hole Leave the other cap in position The caps ensure that dust and other impurities do not enter the gear train through unused holes Thread the locknut fully onto the 1 4 in setscrew Insert the setscrew into the desired hole turning clockwise until resistance is encountered or the locknut contacts the housing If resistance is met before the setscrew is fully inserted stop and review the initial setup procedures as detailed in steps 1 through 3 Determine the angle of minimum position required for the application With the setscrew fully inserted the minimum position is 30 With the setscrew fully out the minimum position is 0 Using the conversion of approximately 1 7 angular degrees of shaft rotation per turn of the setscrew back the screw out of the housing and stop slightly short of the calculated position This allows the setscrew to be set accurately while taking air flow measurements IMPORTANT After initiating step 10 the setscrew cannot be turned into the housing without returning the actuator to the fully open position
3. Honeywell ML6131 Direct Coupled Actuator APPLICATION The ML6131 Direct Coupled Actuator DCA is used to control dampers in applications such as variable air volume VAV terminal units It is suitable for use with single pole double throw spdt floating thermostats or two position control systems U S Registered Trademark PRODUCT DATA FEATURES Mounts directly on damper shaft e 6 lb in torque Selectable 45 60 and 90 stroke in either clockwise cw or counterclockwise ccw directions e 15 second timing model suitable for use with pressure independent VAV systems Magnetic coupling typically provides a maximum of 18 Ib in stall torque eliminating the need for mechanical stops or limit switch adjustments Two field addable auxiliary switches Field addable auxiliary feedback potentiometer Models available with 0 to 30 minimum position adjustment in cw or cew directions e Compatible for use with Honeywell W7620 Terminal Unit Controller Can be used with the Commercial Zone Damper in the W7600 Commercial Zone System Manual declutch on some models Contents Application ast Sariyer a idiari ia 1 Feat resS i mnoo e ie est se 1 Specifications rei orea err Enea aroi aE Sa a a aa ty sategecded acess 2 Ordering Information cceceeceeeseeeeeeeeeeeeeeeeeeeseeeeeeetsaes 2 MACE a EEEE E TEET 3 Operati N s Nrhrssce ddeon t itso ear iadaa antet aieiai egdi
4. TROL M17612 Fig 10 201052B Auxiliary Switch wiring ML6131 DIRECT COUPLED ACTUATOR Auxiliary Potentiometers The 200976 Auxiliary Potentiometer mounts on the face of certain ML6131A actuators as shown in Fig 11 The potentiometer shaft has a slipping collar which means that if one of the two limits of the potentiometer is exceeded the collar will continue to rotate causing no damage to the potentiometer itself To mount the potentiometer on the actuator 1 Turn the potentiometer to align the shaft key with the slot in the potentiometer drive 2 Tilt the potentiometer slightly so the key faces down toward the slot 3 Insert the potentiometer into the slot and push down so the potentiometer is flush with the actuator body and the bracket is aligned over the screw hole 4 Insert the screw provided into the hole and fasten securely IMPORTANT Failure to follow the calibration procedures can result in improper resistance values at desired stroke To Calibrate the 200976A C IMPORTANT Remove the range stop pins and minimum position setscrews prior to calibration 1 Drive the actuator fully closed 0 to fully open 90 and back again to the fully closed position This must be done to receive the correct resistance readings at the appropriate degree of stroke 2 Check the resistance values of the potentiometer with an ohmmeter at intervals in the stroke while referring to the table in Fig 11 and resistance in
5. able codes ordinances and regulations A WARNING Explosion Hazard A spark from the actuator or attached accessories can result in serious injury or death Install the actuator in areas free of escaping gas and other explosive vapors N CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconnect all power supplies before installation Actuators with auxiliary switches can have more than one disconnect CAUTION Actuator Damage Hazard Deteriorating vapors and acid fumes can damage the actuator metal parts Install actuator in areas free of acid fumes and deteriorating vapors Location Choose a location for the actuator that allows enough clearance for mounting accessories and for servicing Mounting These actuators are designed to open a damper or valve by driving the shaft in either the clockwise cw N or counterclockwise ccw x N direction The actuator has a mounting tab on the bottom that secures it to a damper box or valve linkage When mounted correctly this tab allows the actuator to float without rotating relative to the shaft The tab is sized for 1 4 in self tapping sheet metal screws not included CAUTION Equipment Damage Hazard Tightly securing mounting tab to damper housing can damage actuator Once mounted the actuator must be allowed to float do not fully tighten the screw These actuators are shipped in the fully c
6. as determined in step 1 The actuator follows the setscrew without damaging the housing only when backed out of the housing turned ccw 63 2498 2 ML6131 DIRECT COUPLED ACTUATOR 10 Rotate the actuator to minimum position using the manual declutch see Manual Operation Declutch section 11 With the actuator at minimum position adjust the position more accurately using air flow measurements IMPORTANT After each adjustment ensure the actuator is completely stopped before proceeding with the next adjustment To reduce the minimum position turn out the setscrew ccw The actuator then drives toward the closed position Turning the setscrew in cw damages the actuator housing If the device is too far closed return to step 1 12 When proper air flow is achieved loosen the locknut from the setscrew until it contacts the actuator housing then turn it an additional 1 8 turn to lock the setscrew in place IMPORTANT Run an entire check of the operation after completing this procedure Wiring CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconnect all power supplies before installation Actuators with auxiliary switches can have more than one disconnect All wiring must comply with local electrical codes ordinances and regulations Voltage and frequency of the transformer used with the actuator must correspond with the chara
7. correct 4 If no movement is observed check for the presence of 24 volts 5 If using the T641 Thermostat check that 24 volts are present between terminals C and Y during a call for cooling With proper wiring and 24 volts present the actuator should operate correctly 6 If not replace the actuator NOTE When the ML6131 is used with electronic control systems such as the W7620 override the control system by programming the controller to open close the zone damper as appropriate Honeywell Home and Building Control Honeywell Inc 155 Gordon Baker Road North York Ontario Honeywell Plaza P O Box 524 Home and Building Control Honeywell Limited Honeywell Limit e Minneapolis MN 55408 0524 M2H 3N7 Printed in U S A on recycled 63 2498 2 B B Rev 6 00 amp paper containing at least 10 www honeywell com post consumer paper fibers
8. cteristics of both the power supply and the actuator Screw terminals are provided for easy hookup See Fig 9 for typical wiring Auxiliary Switches The 201052A B or C Auxiliary Switch is used in conjunction with the actuator It allows for control of equipment external to the actuator for example electric reheat coils and fan at an adjustable point in the stroke 0 to 90 of the actuator 63 2498 2 6 The 201052A B and C Auxiliary Switches are field addable For mounting instructions see form 63 2218 provided with the device IMPORTANT When operating an ML6131 from a two position controller a 201052B Auxiliary Switch is required for proper operation See Fig 10 NOTE See Fig 11 for the 201052B Auxiliary Switch wiring ML6131 A RED COM EXTERNAL SWITCH BLUE CW WHITE CCW A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A AUXILIARY SWITCHES ARE REQUIRED TO TURN OFF THE MOTOR AT EACH END OF THE STROKE M17613 Fig 9 ML6131 used with T87F in heating only or cooling only application L1 HOT L2 SPDT CONTROL ON OFF CONTROL ML6131 201052B RED COM BLUE CW WHITE CCW POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A SET SWITCH TO CLOSE WHEN STROKE REACHES FULL CW POSITION A SET SWITCH TO CLOSE WHEN STROKE REACHES FULL CCW POSITION A ON OFF CONTROL REQUIRES AN R8222 SPDT RELAY IN PLACE OF THE SPDT CON
9. formation provided in the Specifications section 3 Replace the range stop pins and or the minimum position setscrews using the appropriate procedures AUXILIARY POTENTIOMETER MOTOR RW RB POSITION RESISTANCE RESISTANCE FULLY CW 500 OR 24V COM CW 2000 OHMS FULLY CCW 500 OR 24V COM CCW 2000 OHMS AUXILIARY POTENTIOMETER LEADS MOTOR ROTATION RW OHMS RB OHMS FIELD ADDABLE AUXILIARY POTENTIOMETER M10251B Fig 11 ML6131 with field addable potentiometer 63 2498 2 ML6131 DIRECT COUPLED ACTUATOR OPERATION VAV Systems VAV systems control the temperature within a space by varying the volume of supply air Air is delivered to the space at a fixed temperature The volume of supply air is controlled by the space thermostat modulating the supply air damper When full heating and cooling flexibility is required in a zone it is handled by temperature air system or with reheat capability in the air terminal units As individual zones shut down the total air flow in the system is regulated by a central duct static pressure controller The fan system is sized to handle an average peak load not the sum of the individual peaks As each zone peaks at a different time of day extra air is borrowed from the off peak zones This transfer of air from low load to high load zones occurs only in true VAV systems In pressure independent systems individual zone airflow sensors are used to maintain the zone air flow rate regard
10. ition only after the pin passes through both actuator plates see Fig 6 The range stop pin should snap into position and not be removable manually see Fig 7 IMPORTANT Do not fully tighten the mounting screw the actuator must be allowed to float 4 With the actuator placed in its final position secure the mounting tab to the damper box with a sheet metal screw 5 Position the damper in the open position and securely tighten the Allen screws into the damper shaft ML6131 DIRECT COUPLED ACTUATOR RANGE STOP PIN ACTUATOR PLATES M10246A Fig 6 Range stop pin properly inserted SCREWDRIVER Fig 7 Lifting a range stop pin out of its slot Minimum Position Setscrew Certain ML6131 models are equipped with two tapped holes located in the plastic housing at the top of the actuator These holes can be used with the minimum position setscrew and locknut inside the 4074ENJ Bag Assembly see Fig 6 The setscrew provides for a 0 to 30 minimum position adjustment NOTE Before starting operation note that the 1 4 in minimum position setscrew limits closing motion while the range stop pin limits opening motion ss Determine the direction of the desired closing rotation Move the actuator to the position fully opposite the desired closing rotation if cw closing rotation is desired move the actuator to the full ccw position Determine the correct hole for the setscrew using Fig 8 and the results of
11. less of fluctuation in the total system pressure Pressure independent systems when used with controllers such as the W7620 can react faster to changes in air flow demand Therefore these systems can use the faster 15 second ML6131 models Parallel Actuators IMPORTANT Over time parallel driving actuators can become out of sync with each other Normally driving all actuators to the fully open or fully closed position puts them back in sync Using Fig 9 parallel the CW COM and CCW terminals Make certain the total connected load does not exceed the current capacity of the controller or thermostat CHECKOUT To check out the ML6131 determine the direction the damper shaft moves to open the damper cw or ccw See Fig 3 1 Place 24 Vac across the appropriate COM and CW or COM and CCW terminals to energize the actuator The ML6131 should begin to open the damper 2 Ifthe actuator does not run switch the 24 Vac across the opposite COM and CW or COM and CCW terminals to determine if the damper will begin to close 3 If the actuator does not run in either direction replace the ML6131 In the event the ML6131 is used with a spat floating wall thermostat pressure dependent systems 1 Adjust the setpoint of the thermostat to call for cooling 2 Observe the operation of the actuator if the device is closed it should begin to open 3 If not adjust the setpoint of the thermostat higher to determine if the wiring is
12. lockwise 90 position as viewed from the end of the damper shaft CAUTION Equipment Damage Hazard Mounting actuator unevenly with damper housing can damage actuator Mount actuator flush with damper housing or add spacer between mounting tab and damper box housing see Fig 2 ADD SPACER BETWEEN DAMPER DAMPER BOX AND TAB SHAFT uo F VAV BOX HOUSING M4449 Fig 2 Mounting actuator to VAV box when actuator is not flush with box 63 2498 2 ML6131 DIRECT COUPLED ACTUATOR Preparation Before mounting the actuator onto the shaft determine the following 1 Size of the shaft 3 8 in to 1 2 in 2 Direction the shaft rotates to open the device cw or ccw See Fig 3 3 Degrees of actuator stroke for opening device 45 60 or 90 If the shaft is 3 8 in round or square use part number 201391 Shaft Adapter provided inside the bag assembly shipped with the actuator Place the adapter opposite the setscrews see Fig 4 TYPE A DAMPER va 1 COOLING AIR FLOW 7 2B 7 CW TO OPEN CCW TO CLOSE TYPE B DAMPER D b COOLING SA AIR FLOW CCW TO OPEN CW TO CLOSE M2067A Fig 3 Determining direction damper shaft rotates when opening SHAFT ADAPTER Se M2064 Fig 4 Using shaft adapter for 3 8 in shafts Manual Operation Declutch A CAUTION Personal Injury and Product Damage Hazard Do not use manual declutch without supporting the load Supp
13. ort load independent of actuator immediately prior to and while using manual declutch lever Manual declutch capability is available on some actuators Use the manual declutch lever to manually adjust the actuator setting Fig 5 shows the location of the manual declutch lever To operate push the lever in the direction of the arrow on the lever cover 63 2498 2 4 MANUAL DECLUTCH LEVER ML61 31 M17611 Fig 5 Location of manual declutch lever Installation After determining the direction of the shaft rotation cw or ccw install the device For valve linkage mounting refer to the instructions shipped with the linkage For damper mounting proceed as follows 1 Place the actuator onto the damper shaft A CAUTION Equipment Damage Hazard Improper range stop selection can damage light duty dampers Be sure to select the proper range stop 2 Ifthe angle of the damper opening is either 45 or 60 close the actuator using the manual declutch a Disengage the hub using the declutch lever see Manual Operation Declutch section b Rotate the hub until the actuator gear train passes the proper 45 or 60 setting Do not insert the pin until after the actuator passes this point c Release the declutch lever NOTE Dampers with 90 stroke do not require the range stop pin 3 Insert the range stop pin into the appropriate cw or ccw 45 or 60 slot The range stop pin is clipped into its final pos
14. sistance Output Resistance Linear as Measured Between Terminal R B 0 ohms at 0 degree cw stroke 250 ohms at 45 degree cw stroke 333 ohms at 60 degree cw stroke 500 ohms at 90 degree cw stroke Auxiliary Switch Ratings Electrically selective NO or NC not simultaneous Pilot Duty 40 VA 24 Vac Switch Differential 3 angular degrees maximum Approvals Underwriters Laboratories Inc Component Recognized File No E4436 Guide No XAPX2 CSA Certified includes auxiliary switch Accessories 201052A One Auxiliary Switch 201052B Two Auxiliary Switch 201052C Three Auxiliary Switch 200976A 0 to 500 ohm Auxiliary Potentiometer 200976C 0 to 2000 ohm Auxiliary Potentiometer 4074ENJ Bag Assembly includes stop pin shaft adapter and minimum position screw 4074ENY Bag Assembly includes stop pin and shaft adapter 4074EVK Short Shaft Extension Kit to adapt actuator output hub to short VAV damper shafts 7640QW Metal Enclosure for running conduit to actuator Table 1 Torque Ratings Torque Running 6 Ib in 0 7 Nem Breakaway 6 Ib in 0 7 Nem Stall Typical 7 5 b in 0 8 Nem minimum 18 Ib in 2 0 Nem maximum When purchasing replacement and modernization products from your TRADELINE wholesaler or distributor refer to the TRADELINE Catalog or price sheets for complete ordering number If you have additional questions need further information or wo
15. uld like to comment on our products or services please write or phone 1 Your local Home and Building Control Sales Office check white pages of your phone directory 2 Home and Building Control Customer Logistics Honeywell Inc 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 In Canada Honeywell Limited Honeywell Limit e 155 Gordon Baker Road North York Ontario M2H 3N7 International Sales and Service Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 63 2498 2 2 ML6131 DIRECT COUPLED ACTUATOR 111 16 2 7 8 73 42 4 FE 1 8 3 7 l l OPTIONAL AUXILIARY SWITCH l EERS 4 718 123 1 5 16 3 3 8 86 E 33 2 1 2 64 gt M18016 Fig 1 Approximate dimensions of ML6131 Direct Coupled Actuator in in mm INSTALLATION men Installing this Product Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After installation is complete check out product operation as provided in these instructions IMPORTANT All wiring must agree with applic
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