Honeywell ML6284 Automobile Parts User Manual
Contents
1. DIRECT COUPLED DAMPER ACTUATOR W TO JUNCTION BOX UP TO 3 FT AWAY MOUNTING BRACKET M7874 Fig 4 ML6284 Actuator typical mechanical connection ML6284A C YELLOW T1 BLACK TAN GREEN CLOSED ORANGE OPEN A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A soo OHM POTENTIOMETER ee Fig 5 ML6284A C typical wiring diagram ML6284 GREEN CLOSED ORANGE OPEN A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A tme OUT FUNCTION AVAILABLE WITH ML6284D F MODELS M4884A A 500 OHM POTENTIOMETER Fig 6 ML6284D F typical wiring diagram COMMON WHITE RED INTERNAL WHITE YELLOW AUXILIARY COMMON SWITCH i BLACK RED 3A 24VAC 82 BLACK BLUE L BLACK YELLOW SWITCHES SHOWN AT ACTUATOR CCW M7877A CLOSED POSITION Fig 7 ML6284 Actuator wiring for auxiliary switches ML6284A C CONTROLLER ML6284A C CONTROLLER YELLOW A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M4885A Fig 8 Common transformer with two controller outputs and two ML6284A C actuators 63 2505 ML6284 NON SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR ML6284D F YELLOW ML6284D F CONTROLLER YELLOW A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED MAPROA Fig 9 Common transformer with two contr2. Solutions Honeywell International Inc Honeywell Limited Honeywell Limit e 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Scarborough Ontario M1V 4Z9 Printed in U S A on recycled 63 2505 GR 06 04 paper containing at least 10 www honeywell com post consumer paper fibers
3. and air conditioning installations to operate dampers ventilation flaps and louvers requiring up to 150 Ib in torque The ML6284 Non Spring Return Direct Coupled Damper Actuator is operated by an spdt floating controller When using an spdt floating controller the actuator is driven toward its fully open clockwise position when the controller makes B contact and toward the fully closed counterclockwise Y w position when the controller makes W contact It stops when neither contact is made 63 2505 6 IMPORTANT The ML6284 can operate with DDC controller that emulates an spat break before make switch Do not short cycle the actuator Short cycling of the actuator can cause premature failure The actuator has a position indicator to show shaft position As the indicator moves with the shaft it gives an angular representation of the damper position There are four distinct positions where the indicator can be placed The indicator can be removed by first removing the output hub to provide proper damper position indication The indicator can be indexed to show cw or ccw open or closed using the detents that are 90 apart See Fig 3 The ML6284D and ML6284F models provide a time out function that removes power from the actuator submotor if the actuator remains in the fully open or fully closed position for longer than a nominal five minutes This time out function helps to extend actuator life ML6284 NON SPRING RETURN
4. 4 mm when the shaft attachment is made on the side of the actuator opposite the duct 0 65 in 16 mm when the hub is mounted on the shaft before the actuator is installed Most actuators are shipped with specifically sized hubs Some models contain an assembly with assorted hub inserts Mounting bracket is included with most models Dimensions See Fig 1 Device Weight 3 0 lb 1 36 kg Noise Rating Driving Only 45 dBA maximum at 1 0m Position Indicator Mounted on actuator hub Actuator Design Life Full Stroke Cycles 100 000 Repositions 2 000 000 minimum Approvals UL94 5V Enclosure Plenum rating UL873 Low voltage auxiliary switches UL Listed File number E4436 Guide number XAPX CSA Listed File number LR95329 17 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 would like to comment on our products or services please write or phone 1 Your local Honeywell Automation and Control Products Sales Office check white pages of your phone directory 2 Honeywell Customer Care 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 In Canada Honeywell Limited Honeywell Limit e 35 Dynamic Drive Scarborough Ontario M1V 4Z9 International Sales and Service Offices in all principal cities of the world Manufact
5. Honeywell ML6284 Non Spring Return Direct Coupled Damper Actuator A T E APPLICATION The ML6284 Non Spring Return Direct Coupled Damper Actuator provides single pole double throw spdt floating control of dampers in heating ventilation and air conditioning HVAC applications The actuator has an internal electrically isolated feedback potentiometer that can be used to provide indication of the motor output hub position or control a slave Series 90 actuator U S Registered Trademark 2004 Honeywell International Inc All Rights Reserved PRODUCT DATA FEATURES Mounts directly on 3 8 in to 5 8 in 10 to 17 mm round and square and 3 4 in 19 mm round damper shafts by using the appropriate insert Most models are shipped with 1 2 in insert Provides 150 Ib in 17 Nem running torque Magnetic coupling eliminates the need for mechanical stops or limit switch adjustments by limiting stall torque to 250 Ib in 28 3 Nem maximum 95 stroke provides necessary compression of rubber neoprene gaskets commonly used on 90 low leakage dampers e Manual clutch allows for manual adjustment 92 second synchronous timing can eliminate need for feedback position indication in closed loop temperature control applications Removable splined output hub permits premounting of hub on damper shaft providing installation flexibility Designed for both single point and three point m
6. ML6284A C 5 VA maximum at 24 Vac ML6284D F 6 VA maximum at 24 Vac Auxiliary Switch Ratings 24 Vac 3 AFL 18 ALR 1A Pilot Duty Feedback Resistor 500 ohm linear potentiometer Cable Ratings Control Standard models include nonplenum UL CSA rated 30V 60 C 20 gauge cable Auxiliary Switch UL CSA rated 300V 90 C 18 gauge Controller Type Floating spdt Torque Ratings at Rated Voltages Lift and Hold Minimum 150 Ib in 17 N m Breakaway Minimum 150 Ib in 17 Nem Stall Minimum 150 Ib in 17 Nem Stall Maximum 250 Ib in 28 3 Nem Torque Deratings at 24 Vac 20 150 Ib in from 20 F to 95 F 29 C to 35 C 133 Ib in from 95 F to 140 F 35 C to 60 C 150 Ib in from 40 F to 20 F 40 C to 29 C at 24 Vac 20 only Actuator Stroke 95 Nominal 3 mechanically limited ORDERING INFORMATION Actuator Timing at 90 Stroke 92 2 seconds synchronous at 60 Hz from 4 F to 140 F 20 C to 60 C 110 2 seconds synchronous at 50 Hz from 4 F to 140 F 20 C to 60 C Non synchronous below 4 F 16 C Ambient Temperature Range 30 F to 140 F 35 C to 60 C Storage Temperature 30 F to 150 F 35 C to 65 C Humidity 5 to 95 percent relative humidity noncondensing Mounting Mounts directly on horizontal 3 8 in to 5 8 in 12 to 17 mm round or square or 3 4 in 19 mm round damper shaft Minimum shaft length required 2 5 in 6
7. duct 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 A WARNING Electrical Shock Hazard Can cause severe injury death or property damage Disconnect power before installation to prevent electrical shock or equipment damage N CAUTION Equipment Damage Hazard Can cause equipment damage or failure 1 Never turn motor output hub by hand or wrench 2 Do not install actuator in areas with acid fumes or other deteriorating vapors that might attack the metal parts of the actuator A WARNING Fire or Explosion Hazard Can cause severe injury death or property damage Do not install actuator in areas with escaping gas or other explosive vapors that could be ignited by a spark from the actuator or attached accessories Location Install the actuator in any location free from acid fumes or other deteriorating vapors that might attack the metal parts of the actuator Make sure the location is not subject to escaping gas or other explosive vapors that could accidentally be ignited by a spark from the actuator or its attached parts 63 2505 4 Install the actuator in a location that allows enough clearance for mounting accessories and for servicing Mounting The ML6284 Non Spring Return Direct Coupled Damper Actuator is designed to operate a damper by driving the damper sha
8. ft either cw w or ccw y depending on damper design All actuators are shipped in the fully closed position The ML6284 Non Spring Return Direct Coupled Damper Actuator is designed with removable hub inserts to accommodate specific damper shaft sizes Proper sleeve selection is necessary when three point mounting is used to avoid excessive strain on the output gear Most ML6284 Actuators are shipped with a 1 2 in hub insert For field use two hub insert sizes are available See the Accessories listing in the Specifications section Shaft sizes are stamped on the inserts The ML6284 Non Spring Return Direct Coupled Damper Actuator is designed for single point mounting when using a mounting bracket Single point mounting is typically used when the actuator is mounted on the damper shaft The ML6284 Non Spring Return Direct Coupled Damper Actuator can be mounted directly on the damper shaft with the actuator in any position A mounting bracket see Fig 1 is provided with some models to aid in installing the actuator The bracket can be bent to any shape to allow the bracket tab to be centered in the actuator slot N CAUTION Equipment Damage Hazard Improper mounting can damage the equipment or interfere with proper operation The mounting bracket must not bind or clamp the actuator to the duct The mounting bracket only prevents the actuator housing from rotating The ML6284 Direct Coupled Damper Actuator has a reversible ou
9. he actuator output coupling bearings Preparation Before installing the ML6284 on the damper shaft determine the opening direction of the damper shaft see Fig 2 to correctly connect the wiring Installation Installing Actuator and Mounting Bracket one Point Mounting Place the ML6284 Non Spring Return Direct Coupled Damper Actuator over the damper shaft 2 Position the actuator for best access to the actuator damper shaft locking screw 3 Install the mounting bracket see Fig 2 and adjust it so the bracket tab is midway in the actuator slot Mark the screw holes for installing the mounting bracket on the damper housing 4 Remove the mounting bracket and actuator 5 Drill or center punch the starting holes for the mounting bracket screws or use no 10 self tapping sheet metal screws not supplied 6 Place the actuator and mounting bracket back into position over the damper shaft and install the mounting bracket screws 7 Move damper shaft either fully clockwise 7N or fully counterclockwise y 8 Fully depress and hold disengage button while moving the actuator hub either fully clockwise w or fully counterclockwise y to match the damper shaft Release disengage button 9 Tighten the two 8 mm by 12 mm long set screws firmly against the damper shaft maximum tightening torque is 100 Ib in Wiring A WARNING Electrical Shock Hazard Can cause severe injury death or property damage Disconnect
10. oller outputs and two ML6284D F actuators ML6284A C CONTROLLER ML6284A C YELLOW A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED MABBTA Fig 10 Common transformer with one controller output and two ML6284A C actuators CHECKOUT Perform the following steps to checkout the ML6284 Non Spring Return Direct Coupled Damper Actuator 1 Check the actuator position indicator and the damper shaft position to see that they agree 2 If the actuator has time out function apply 24 Vac to black T1 lead and red T2 lead See Fig 5 3 Apply 24 Vac control signal to blue B lead with respect to black T1 lead see Fig 5 Actuator should drive damper open 4 Apply 24 Vac control signal to yellow W lead with respect to black T1 lead see Fig 5 Actuator should drive damper closed 5 f 24 Vac control signal is removed actuator should stop TROUBLESHOOTING Perform the following troubleshooting steps if the actuator does not drive travel full stroke or operate properly during the checkout NOTE Perform these steps before replacing the actuator 1 Checkthe actuator label to verify that proper power and control signal requirements have been met 2 Check for 24 Vac at actuator black T1 yellow W or blue B and red T2 if actuator has time out function leads when the actuator should be driving If the voltage is not present or is low check power supply and con
11. ounting to allow installation flexibility Available with or without a time out feature Models without the time out feature are designed to be used with intelligent building management system and or controller Standard models have two 8 mm by 12 mm long set screws for securing the damper shaft Actuator models available for various shaft sizes that allow damper shaft to operate centered inside the output hub Contents Application ee 1 FGaltUl6S sccssassssseatssannenstaas oan P3d d aT FILS R1 ES Tree PEE ved Fd FIN iranat 1 ie tele euam m eae 2 POUR COMMANDER eene enne 2 French Installation Me E nnnm 4 oiu a EE 6 CHECK IU e E SS 8 63 2505 ML6284 NON SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR SPECIFICATIONS Models ML6284 Non Spring Return Direct Coupled Damper Actua tors ML6284A High Torque 150 Ib in Direct Coupled Damper Actuator without auxiliary switches or time out function ML6284C High Torque 150 Ib in Direct Coupled Damper Actuator with two low voltage rated auxiliary switches and without time out function ML6284D High Torque 150 Ib in Direct Coupled Damper Actuator without auxiliary switches and with time out function ML6284F High Torque 150 Ib in Direct Coupled Damper Actuator with two low voltage auxiliary switches and with time out function Electrical Ratings Power Input 24 Vac 20 50 60 Hz Power Consumption
12. power supply before wiring to prevent electrical shock or equipment damage All wiring must comply with local electrical codes ordinances and regulations The ML6284 is designed for use with a Class 2 power supply Voltage and frequency of the transformer used must correspond with the characteristics of the motor and those of the power supply Standard electrical connection is shown in Fig 4 See Fig 5 and 6 for typical wiring connections The ML6284 has a plastic housing with two taped holes on the end of the device for 1 2 in conduit fittings ML6284 Models with Factory mounted Auxiliary Switches See Fig 7 ML6284C F models have two nonadjustable low voltage rated spdt auxiliary switches that are factory set to make common to normally open at 12 and 82 rotation from the closed counter clockwise stop See Fig 7 63 2505 ML6284 NON SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR DISENGAGE BUTTON La RETAINING RING Nx DETENT INSERT N l POSITION M INDICATOR INDICATOR DETENTS HUB SLEEVE HUB INSERTS M7875 Fig 3 Mounting hub to inside of actuator IMPORTANT Actuators driving in parallel may not be synchronized with each other In normal operation when all actuators are driven to the fully open or fully closed position the actuators are again synchronized OPERATION The ML6284 Non Spring Return Direct Coupled Damper Actuator is designed to be used in ventilating
13. tput hub The hub is factory mounted on the top of the actuator gear housing When attaching to damper shafts less than 2 5 in 64 mm long or for ease of mounting the output hub may be mounted to the back of the actuator gear housing See Fig 3 Be careful when removing the retaining ring which secures the output hub sleeve to the actuator housing Use a flat headed screwdriver to pry the retaining ring loose ML6284 NON SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR M7876 Fig 2 Installing mounting bracket on ML6284 Non Spring Return Direct Coupled Damper Actuator NOTE Install mounting bracket so mounting bracket tab is centered in actuator slot A typical actuator mechanical connection is shown in Fig 4 wiring diagrams in Fig 5 through 10 The ML6284 Non Spring Return Direct Coupled Damper Actuator can also be three point mounted using the two front gear housing slots and the adapter bracket Two screws are secured through the two front gear housing slots and the adapter bracket positioned to secure the rear of the actuator Three point mounting is used for foot mounting the actuator or internally mounting the actuator in the duct when direct shaft coupling is not possible N CAUTION Equipment Damage Hazard Improper mounting will damage the actuator Do not use the actuator as a shaft bearing The actuator must be used only to supply rotational torque To prevent damage to the actuator avoid any side loads to t
14. troller 3 Ifthe actuator does not drive in the correct direction when a control signal is applied reverse the yellow and blue wires 4 Remove power and fully depress and hold disengage button down while turning damper shaft clockwise 77 w and counterclockwise If the damper shaft turns freely through the entire 90 stroke and the actuator is installed correctly replace the actuator 5 Ifthe damper shaft will not turn freely for the full 90 check for any bind and make sure the actuator is loose on the mounting bracket If necessary adjust mounting bracket to prevent binding 6 If no binding is noticed in the actuator and damper assembly remove the actuator and turn the damper shaft clockwise 7N and counterclockwise YN If the damper does not turn freely repair or replace the damper 7 If the damper turns fully depress and hold the actuator disengage button down and turn the actuator hub clockwise N and counterclockwise Y If the actuator hub does not turn replace the actuator 8 Ifthe actuator and damper turn freely remount the actuator to the damper in accordance with the instructions in the Installation section Make sure the actuator and mounting bracket do not bind Make sure the actuator and damper are both at the same end stop clockwise 7N or counterclockwise 47 when they are assembled Hook up the wires and repeat the checkout Troubleshoot again if necessary Honeywell Automation and Control
15. uring in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 63 2505 2 ML6284 NON SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR E 4 102 lt 3 3 32 79 7 16 11 1 17 32 39 9 32 7 lt 3 PLACES 8 7 16 7 11 16 196 Honeywell 1 29 32 gt 48 pes 13 32 10 5 8 17 1L FT 1 4 6 15 16 24 1 2 13 gt 1 2 13 2 1 2 63 3 5 16 84 REMOVABLE RETAINING RING FOR REMOVAL OF HUB SLEEVE E 4 1 2 114 M7618B 6 182 Fig 1 Approximate dimensions of ML6284 Non Spring Return Direct Coupled Damper Actuator and mounting bracket in in mm 3 63 2505 ML6284 NON SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR Environmental Protection Ratings NEMA1 standard with damper shaft in horizontal position Accessories 205617 Hub Insert 3 4 in round 205753 Hub Insert 3 8 in 205758 Hub Insert 5 8 in 205820A 3 Point Mounting Kit 205685 Crank Arm Accessory 205850B End Stop Kit INSTALLATION When Installing this Product 1 Readinstructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Checkratings and description given in the specifications to make sure the pro
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