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PRODUCT DATA

® U.S. Registered Trademark
© 2004 Honeywell International Inc.
 All Rights Reserved 

63-2505

ML6284

Non-Spring Return

Direct Coupled Damper Actuator

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.

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 lb-in. (17 N•m) running torque.
• Magnetic coupling eliminates the need for mechanical 

stops or limit switch adjustments by limiting stall 

torque to 250 lb-in. (28.3 N•m) maximum.

• 95° stroke provides necessary compression of 

rubber/neoprene gaskets commonly used on 90° low 

leakage dampers.

• 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 

mounting, 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 ........................................................................

1

Features ...........................................................................

1

Specifications ...................................................................

2

POUR COMMANDER  ......................................................

French

Installation ........................................................................

4

Operation ..........................................................................

6

Checkout ..........................................................................

8

Содержание ML6284

Страница 1: ...it switch adjustments by limiting stall torque to 250 lb in 28 3 N m maximum 95 stroke provides necessary compression of rubber neoprene gaskets commonly used on 90 low leakage dampers 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 premou...

Страница 2: ...t 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 lb in 17 N m Breakaway Minimum 150 lb in 17 N m Stall Minimum 150 lb in 17 N m Stall Maximum 250 lb in 28 3 N m Tor...

Страница 3: ...or and mounting bracket in in mm 9 32 7 3 PLACES 1 17 32 39 3 3 32 79 4 102 7 16 11 1 1 4 32 7 11 16 196 8 7 16 215 36 914 1 2 12 5 8 17 13 32 10 1 2 13 3 4 19 7 8 22 1 25 3 5 32 80 1 2 13 1 2 13 1 11 16 43 2 1 2 63 3 5 16 84 4 1 2 114 5 127 6 152 1 4 6 1 1 REMOVABLE RETAINING RING FOR REMOVAL OF HUB SLEEVE M7618B 1 4 6 1 8 3 2 51 15 16 24 1 29 32 48 ...

Страница 4: ...ing accessories and for servicing Mounting The ML6284 Non Spring Return Direct Coupled Damper Actuator is designed to operate a damper by driving the damper shaft either cw or ccw 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 si...

Страница 5: ...e 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 m...

Страница 6: ...act It stops when neither contact is made IMPORTANT The ML6284 can operate with DDC controller that emulates an spdt 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 f...

Страница 7: ...NS AND OVERLOAD PROTECTION AS REQUIRED 500 OHM POTENTIOMETER ORANGE OPEN TAN GREEN CLOSED L1 HOT L2 1 1 2 2 3 3 MOTOR TIME OUT 24 VAC B BLUE W YELLOW T2 RED T1 BLACK ML6284 M4884A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED TIME OUT FUNCTION AVAILABLE WITH ML6284D F MODELS 500 OHM POTENTIOMETER ORANGE OPEN TAN GREEN CLOSED 12 82 M7877A COMMON COMMON NO NO NC NC WHITE ...

Страница 8: ...s low check power supply and controller 3 If the 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 and counterclockwise If the damper shaft turns freely through the entire 90 stroke and the actuator is installed correctly replace the...

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