Honeywell Automobile Parts ML6185 User Manual

ML6185  
Spring Return  
Direct CoupledActuator  
The ML6185 Spring Return Direct Coupled  
RotaryActuatorisafloatingcontrolmotorthatcan  
be used with controls that provide switched or  
floating single pole double throw (spdt) control  
output to operate dampers in heating, ventilation,  
and air conditioning (HVAC) applications.  
Mounts directly on horizontal 3/8 in., 1/2 in., and  
5/8 in. round and square damper shafts by using the  
appropriate insert. Most models are shipped with 1/  
2 in. insert.  
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.  
Provides 50 lb-in. running and spring return torque.  
Standard models have two 8 mm x 12 mm long set  
screws for securing the damper shaft. Actuator  
models are available for various shaft sizes that will  
allow the damper shaft to operate centered inside the  
output hub.  
Magnetic coupling eliminates the need for mechani-  
cal stops or limit switch adjustments by limiting  
stall torque to 130 lb-in. maximum.  
95° stroke provides necessary compression of rub-  
ber/neoprene gaskets commonly used on 90° low  
leakage dampers.  
Standard one-meter cable with color-coded lead-  
wires allows external wire connections with 1/2 in.  
conduit connectors.  
88 second synchronous timing can eliminate need  
forfeedbackpositionindicationinclosed-looptem-  
perature control applications.  
Can mount two or more actuators on one damper  
shaft to increase output torque for use on dampers  
larger than 16 square feet.  
Removable splined output hub permits premounting  
ofthehubonthedampershaft, providinginstallation  
flexibility.  
Reversible mounting allows actuator to be used for  
either clockwise (cw) or counterclockwise (ccw)  
spring rotation.  
CONTENTS  
Specifications ................................................. 2  
Ordering Information ..................................... 2  
Installation ..................................................... 4  
Operation ....................................................... 9  
Checkout....................................................... 11  
Designedforbothsingle-pointandthree-pointmount-  
ing, providing installation flexibility.  
G.R. • Rev. 4-95 • ©Honeywell Inc. 1995  
63-2483-2  
 
ML6185  
SPECIFICATIONS  
Fig. 1—Approximate dimensions of ML6185 Spring Return Direct Coupled Actuator and mounting  
bracket in in. (mm).  
1-5/32 (29)  
6-25/32 (173)  
1-17/32 (39)  
3-1/16  
(79)  
8-9/32 (210)  
3-29/32  
(99)  
23/32  
(18)  
3-15/16 (100)  
1-21/32  
(42)  
3-1/2  
(89)  
1-5/8  
(41)  
1-9/32  
(32)  
CLEARANCE  
REQUIRED  
FOR SPLINED  
HUB MOUNTING  
1/2 (13)  
3-29/32  
(99)  
1-13/32  
(36)  
1-3/32  
(28)  
135o  
± 15o  
13/32  
(10)  
13/64 (5)  
3/4 (19)  
5/16  
(8)  
3/8  
(10)  
1-13/32 (36)  
4-13/32 (112)  
1-5/8 (41)  
10-13/32 (264)  
M8257  
MOUNTING BRACKET  
3
63-2483—2  
 
ML6185  
SPECIFICATIONS • INSTALLATION  
DEVICE WEIGHT: 4.0 lb (1.82 kg).  
NOISE RATING: (Driving only) 45 dBA maximum at  
0.9m.  
UL873: (Line voltage auxiliary switches).  
CSA: FILE NUMBER E4436, Guide Number XAPX.  
ENVIRONMENTALPROTECTIONRATINGS:NEMA1  
standard with damper shaft in horizontal position.  
MOUNTINGTAB:ForusewithUniversalmountingbracket.  
ACCESSORIES:  
SPRING ROTATION: Clockwise (cw); counterclockwise  
(ccw) by reverse mounting.  
POSITION INDICATOR: Mounted on actuator hub.  
ACTUATOR DESIGN LIFE:  
205820A 3-Point Mounting Kit.  
Full Stroke Cycles: 60,000.  
Repositions: 1,500,000.  
205830A Crank-Arm Accessory.  
205753 Hub Sleeve, 3/8 in.  
Spring Return Cycles: 7,500.  
205758 Hub Sleeve, 5/8 in.  
APPROVALS:  
UL94-5V: (Enclosure) Plenum rating.  
Installation  
WHEN INSTALLING THIS PRODUCT…  
1. Read these instructions carefully. Failure to follow  
them could damage the product or cause a hazardous  
condition.  
2. Check the ratings and description given in this specifi-  
cationtomakesuretheproductissuitableforyourapplication.  
3. Installer must be a trained, experienced service  
technician.  
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 support the actuator at the correct  
height.  
The ML6185 Direct Coupled Actuator can also be three-  
point mounted using the two front gear housing slots and  
the adapter bracket. Secure two screws through the two  
front gear housing slots and position the adapter bracket 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.  
4. After installation is complete, check out product op-  
eration as provided in these instructions.  
CAUTION  
1. Disconnect power before installation to prevent  
electrical shock or equipment damage.  
2. Never turn motor output hub by hand or with a  
wrench.  
CAUTION  
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 the actuator output coupling  
bearings.  
3. Do not install actuator in areas with acid fumes  
or other deteriorating vapors that might attack  
the metal parts of the actuator.  
4. 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.  
PREPARATION  
Before installing the ML6185 on the damper shaft,  
determine the opening direction of the damper shaft to  
determine the correct spring return rotation and correctly  
connect the wiring. The ML6185 can be mounted to pro-  
vide clockwise or counterclockwise spring return. Reverse  
the actuator, if necessary, to provide the desired spring  
action.  
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.  
Install the actuator in a location that allows enough clear-  
ance for mounting accessories and for servicing.  
INSTALLATION  
Installing the Actuator and Mounting Bracket (Single  
Point Mounting)  
When the direction of the damper shaft rotation is deter-  
mined (either cw  
1. Place the ML6185 Direct Coupled 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  
to support the actuator at the correct height. Mark the screw  
holes for installing the mounting bracket on the damper  
housing.  
or ccw  
), proceed as follows:  
MOUNTING  
The ML6185 Direct Coupled 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 ML6185 Direct Coupled Actuator is designed for  
single-pointmountingwhenusinganadapterbracket. Single-  
pointmountingistypicallyusedwhentheactuatorismounted  
on the damper frame.  
63-2483—2  
4
 
ML6185  
INSTALLATION  
4. Remove the mounting bracket and actuator.  
5. Drill or center punch the starting holes for the mount-  
ing bracket screws (or use no. 10 self-tapping sheet metal  
screws).  
6. Place the actuator and mounting bracket back into  
position over the damper shaft and install the mounting  
bracket screws.  
7. Tighten the two 8 mm x 12 mm long set screws firmly  
against the damper shaft (maximum tightening torque is  
100 lb-in.).  
Fig. 2—Installing mounting bracket on ML6185  
Direct Coupled Actuator.  
Installing the Actuator for Three-Point Mounting  
The ML6185 Direct Coupled Actuator is designed with  
removable hub sleeves 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 ML6185 Actuators are shipped with a  
1/2 in. hub sleeve. For field use, several hub sleeve sizes are  
available. See the Accessories listing in the Specifications  
section. Shaft sizes are stamped on the sleeves.  
90  
60  
30  
The ML6185 Direct Coupled Actuator can be mounted  
directly on the motor shaft with the actuator in any position  
when the actuator housing is parallel with the damper  
housing or frame. (See Fig. 7.)  
The ML6185 Direct Coupled Actuator has a reversible  
output hub. The hub is factory mounted on the top of the  
actuator gear housing. When attaching to damper shafts  
less than 3.5 in. (76 mm) long, or for ease of mounting, the  
output hub can be mounted to the inside of the actuator gear  
housing. See Fig. 3. Be careful when removing the retain-  
ing ring that secures the output hub to the actuator housing.  
Use a flatheaded screwdriver to pry the ring loose.  
M9386  
Fig. 3—Mounting hub to inside of actuator.  
2
6
1
3
60  
30  
90  
DETENT  
INSERT  
60  
30  
0
4
5
.500  
INDICATOR  
DETENTS  
. 5 0 0  
M7228  
5
63-2483—2  
 
ML6185  
INSTALLATION  
Other possible mounting configurations and standard  
connections are shown in Fig. 4 through 7.  
Fig. 4—ML6185 Actuator mounted for counterclockwise spring rotation with the output hub inside the  
actuator. (NOTE: NEMA rating applies only with damper shaft in the horizontal position.)  
60  
30  
90  
60  
30  
0
1
INDICATOR  
DETENTS  
1
COUNTER CLOCKWISE SPRING ROTATION ARROW  
M7230A  
63-2483—2  
6
 
ML6185  
INSTALLATION  
Fig. 5—Standard direct coupled mounting of ML6185 to a damper with counterclockwise spring rotation.  
60  
30  
90  
60  
30  
.500  
. 5 0 0  
M7229  
7
63-2483—2  
 
ML6185  
INSTALLATION  
WIRING  
Fig. 6—ML6185 Actuator standard electrical  
connection.  
CAUTION  
Disconnect power supply before wiring to prevent  
electrical shock or equipment damage.  
All wiring must comply with local electrical codes,  
ordinances and regulations. The ML6185 is designed for  
use with a Class 2 power supply. Voltage and frequency of  
the transformer used must correspond with the characteris-  
tics of the motor and those of the power supply. See Fig. 8  
for a typical wiring connection.  
60  
30  
90  
The ML6185 has an aluminum die cast housing with  
two integral cast bosses on the end of the device, tapped for  
1/2 in. conduit fittings. Some models are shipped with a  
water seal in the conduit opening. When conduit is needed,  
remove the seal before routing the cable.  
60  
30  
.500  
. 5 0 0  
ML6185 models with Factory-mounted Auxiliary  
Switches (See Fig. 9)  
ML6185C,F models have two nonadjustable line volt-  
age rated spdt auxiliary switches with switches factory set  
to make common to normally open at 12° and 82° rotation  
from the counterclockwise stop. See Fig. 9.  
IMPORTANT: Actuators driving in parallel may not be  
synchronized with each other. In normal operation, if  
all actuators are driven to the fully open or fully closed  
position, the actuators will again be synchronized.  
TO JUNCTION  
BOX (UP TO  
3 FT. AWAY)  
MOUNTING  
BRACKET  
Fig. 8—ML6185 typical wiring diagram.  
M7231  
ML6185  
OPEN  
BLUE  
Fig. 7—ML6185 Actuator can be mounted in  
any position. (NOTE: NEMA rating applies only  
with damper shaft in the horizontal position.)  
MOTOR  
CLOSE  
YELLOW  
OPTIONAL  
TIME OUT  
2
24 HOT  
RED  
POWER  
SUPPLY  
1
SPRING  
CONTROL  
L1  
(HOT)  
24 VAC  
24 GND  
BLACK  
L2  
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
TIME OUT FUNCTION AVAILABLE WITH ML6185D,F MODELS.  
M7224  
60  
Fig. 9—ML6185C,F wiring for auxiliary  
switches.  
30  
90  
60  
30  
0
500  
5 0 0  
WHITE/RED  
12°  
82°  
AUX. SWITCHES  
3A 120 VAC  
WHITE/BLUE  
WHITE/YELLOW  
BLACK/RED  
BLACK/BLUE  
BLACK/YELLOW  
M7227A  
M9384  
63-2483—2  
8
 
ML6185  
INSTALLATION • OPERATION  
Connecting ML6185 Actuators in Parallel  
ML6185 Actuators can be stacked on one damper shaft  
to increase the output torque required to drive dampers  
larger than 16 square feet.  
leadwires (red, black, yellow and blue) in parallel. The  
number of actuators that may be wired in parallel is depen-  
dent on the transformer VA rating. Make certain that the  
connected load does not exceed the current capacity of the  
controller/thermostat. See Fig. 10 and 11.  
To make sure proper phasing occurs, connect all four  
Fig. 10—Common transformer with two  
controller outputs and two actuators.  
Fig. 11—Common transformer with one  
controller output and two actuators.  
ML6185  
ML6185  
CONTROLLER  
BLUE  
CONTROLLER  
BLUE  
R
B
R
B
YELLOW  
YELLOW  
1
W
1
W
RED  
L1  
(HOT)  
RED  
L1  
(HOT)  
BLACK  
BLACK  
L2  
L2  
ML6185  
ML6185  
CONTROLLER  
BLUE  
BLUE  
R
B
YELLOW  
YELLOW  
W
RED  
RED  
BLACK  
BLACK  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
M7226A  
M7225A  
Operation  
The ML6185 Direct Coupled Actuator is designed to be  
used in ventilating and air conditioning installations to  
operate dampers, ventilation flaps and louvers requiring up  
to 50 lb-in. torque. If the power fails, the actuator will  
spring return to the starting position. The actuator is de-  
signed for reversible mounting. Arrows are molded into the  
covers to show the spring return direction. The larger cover  
shows a counterclockwise (ccw) spring rotation; the smaller  
cover shows a clockwise (cw) spring rotation.  
The ML6185 Direct Coupled Actuator is operated by an  
spdt floating controller. When using an spdt floating con-  
troller, the actuator will be driven toward its fully open  
position when the controller makes R to B and toward the  
fully closed position when the controller makes R to W. It  
stops when neither contact is made.  
four distinct positions where the indicator can be placed.  
The indicator can be removed (by first removing the output  
hub) to provide proper damper orientation. The indicator  
can be indexed to show cw or ccw open or closed, using the  
detents that are 90° apart. See Fig. 12. If the spring return  
position is the open position, rotate the indicator until it  
points to 90 on the scale. If the spring return position is the  
closed position, rotate the indicator until it points to zero on  
the scale. A detent can be felt at both stops; the detents  
maintain the indicator position.  
The ML6185D and ML6185F models provide a time-  
out function that removes power from the actuator sub-  
motor if the actuator remains in one position (closed, open  
or any intermediate position) for longer than a nominal 100  
seconds. This time-out function helps to extend actuator  
life.  
IMPORTANT: The ML6185 is designed to respond to  
instantaneous contact closures from a DDC Con-  
troller. Be careful not to short cycle the actuator.  
Unstabledampercontrolmaycauseprematureactua-  
tor failure.  
IMPORTANT: The ML6185 was designed to provide 7500  
springreturns;therefore,theactuatorcanbeunpowered  
daily for night shutdown control. However, rapidly  
cycling the actuator by removing control voltage will  
lead to premature spring failure.  
The actuator has a position indicator to depict shaft  
position. As the indicator moves with the shaft, it gives an  
angular representation of the damper position. There are  
9
63-2483—2  
 
ML6185  
OPERATION  
Fig. 12—ML6185 indicator start positions.  
FULLY COUNTERCLOCKWISE SPRING RETURN INDICATOR START POSITIONS  
POINTER AT 90°  
POINTER AT 0°  
90  
90  
60  
60  
60  
60  
30  
0
30  
0
30  
0
30  
0
DETENT IN INSERT  
DETENT IN INSERT  
DRIVE CLOCKWISE TO CLOSE  
(REVERSE ACTING)  
DRIVE CLOCKWISE TO OPEN  
(DIRECT ACTING)  
FULLY CLOCKWISE SPRING RETURN INDICATOR START POSITIONS  
POINTER AT 90°  
POINTER AT 0°  
90  
90  
60  
60  
60  
60  
30  
0
30  
0
30  
0
30  
0
M7235  
DETENT IN INSERT  
DETENT IN INSERT  
DRIVE COUNTERCLOCKWISE  
TO CLOSE (REVERSE ACTING)  
M7235B  
DRIVE COUNTERCLOCKWISE  
TO OPEN (DIRECT ACTING)  
63-2483—2  
10  
 
ML6185  
CHECKOUT  
Checkout  
The ML6185 Direct Coupled Actuator can be checked  
out either directly or by using a controller.  
4. Connect 24 Vac to the appropriate leadwires (red to  
blue or red to yellow) to move the damper to the opposite  
position. The ML6185 should drive the damper.  
IMPORTANT: When power is interrupted, the actuator  
returnstothenormalstartingpositionusingthespring  
mechanism. When power is restored, the controller  
input will not operate the actuator until the spring is  
fully wound and locked. The spring winding process  
takes approximately 100 seconds, depending on the  
number of degrees of spring return remaining at power  
interrupt (i.e., 10° of spring return remaining takes 10  
seconds). (If the actuator is not in the closed position,  
it will run to the closed position as the spring is  
winding.) Once the spring is locked in its fully wound  
position, the actuator responds to inputs to the red-to-  
blue or red-to-yellow leadwires.  
5. If the actuator does not run, verify that the actuator is  
properly installed for either cw  
or ccw  
rotation.  
6. If the actuator operates in the opposite direction than  
desired, reverse the blue and yellow leadwires.  
7. If the actuator is correctly installed and still does not  
run, replace the actuator.  
CONTROLLER CHECKOUT  
1. Adjust the setpoint of the controller to call for cooling.  
Observe the actuator.  
2. If the damper is closed, it should begin to open.  
3. If the damper remains closed, move the setpoint of the  
controller farther below the room temperature.  
4. If the damper still does not move, check for the  
presence of 24 Vac in the input.  
5. Make sure the actuator spring is fully wound by  
applying power for at least 100 seconds.  
6. If 24 Vac is present and the actuator does not operate,  
reverse the controller leadwires to determine if the device  
was miswired.  
DIRECT CHECKOUT  
1. Mount the actuator for the required application (either  
cw  
or ccw  
rotation to open the damper).  
2. Checkthedamperposition andmakesurethat24Vacis  
present on the red and black leadwires.  
3. Make sure the actuator spring is fully wound and  
locked by applying power for at least 100 seconds.  
7. Ifthewiringiscorrectand24Vacispresentontheinput  
terminals but the actuator does not run, replace the actuator.  
11  
63-2483—2  
 
Home and Building Control  
Honeywell Inc.  
1985 Douglas Drive North  
Golden Valley, MN 55422  
Home and Building Control  
Honeywell Limited—Honeywell Limitée  
740 Ellesmere Road  
Helping You Control Your World  
Scarborough, Ontario  
M1P 2V9  
QUALITY IS KEY  
Printed in U.S.A.  
 

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