3Comr MS40 717X User Manual

MS40-717X Series  
DuraDrive™ Series Spring Return  
Proportional Actuators  
General Instructions  
Application  
DuraDrive Direct Coupled Actuators are designed to be  
used in both damper and valve control applications.  
The following general instructions are for damper  
applications, refer to the Applicable Literature table for  
valve literature.  
The MS40-717X series actuators are over the shaft  
spring return actuators compatible with 2 to 10 Vdc or  
1
4 to 20 mAdc control signals.  
Features  
150 lb-in (17 N-m) rated torque  
NEMA Type 4 housing (IEC IP56)  
Custom automatic current sensing motor control  
provides extended reliability and repeatable timing  
Direct coupled to the damper shaft with dual  
industrial hardened universal mounting clamps  
Integral wiring for proportional control by 2 to 10 Vdc  
1
or 4 to 20 mAdc  
Clockwise or counterclockwise spring return is  
determined by actuator mounting position  
Accurate 92° travel digitally controlled  
Integral position indication scale  
Rugged die-cast housing  
Oil immersed gear train provides continuous  
lubrication  
Integral transformer for high voltage systems  
Rated for operating temperature up to 140 °F  
Five year warranty  
MS40-717x series actuators can be double-  
mounted (gang mounting) to accommodate high  
torque application requirements (2 to 4 actuators).  
Position feedback signal  
1.  
With the addition of a 500 Ohm resistor - not in-  
cluded  
Printed in U.S.A. 1/10  
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Minimum Damper Shaft Length,  
Standard Damper shaft must be at least 4-5/8" (117 mm) long for standard mounting.  
Optional Shorter than standard length shafts require the AM-676 shaft extension  
(order separately).  
Position Indicator, Scale numbered from 0 to 95°, provided for position indication.  
Nominal Damper Area, Actuator sizing should be done in accordance with damper  
manufacturer’s specifications.  
Direction of Rotation, Clockwise or counterclockwise rotation is determined by  
actuator mounting. The zero (0) position on the position indicator is the normal or spring  
return position.  
Environment  
Ambient Temperature Limits:  
Shipping & Storage, -40 to 160°F (-40 to 71°C).  
Operating, -25 to 140°F (-32 to 60°C).  
Humidity: 5 to 95% RH, non-condensing.  
Location: NEMA 1. NEMA Type 4 (IEC IP56) with customer supplied water tight conduit  
connectors.  
Agency Listings  
UL 873: Underwriters Laboratories Inc. listed (File # E9429 Category Temperature-  
Indicating and Regulating Equipment).  
CUL: UL Listed for use in Canada by Underwriters Laboratories. Canadian Standards  
C22.2 No. 24-93.  
European Community: EMC Directive (2004/188/EC). Low Voltage Directive  
(72/23/EEC). See Table-1 for specific models.  
Australia: This product meets requirements to bear the C-Tick Mark according to the terms  
specified by the Communications Authority under the Radiocommunications Act 1992.  
Table-1 Model Chart.  
Part  
Actuator Power Input  
Approximate 93° Rotation  
Timing in Seconds @ 70° F  
(21°C) for Rated Torque  
Output Torque Rating  
lb.-in. (N-m)  
VA  
Running Holding  
Running  
Watts  
Number  
Voltage  
Hz  
Spring  
Powered  
Minimum  
Maximum Stall  
Return  
24 Vac ±20% 50 60  
22-30 Vdc  
5.5  
5.0  
6.4  
7.2  
7.8  
5.6  
4.7  
2.5  
5.2  
9.0  
MS40-7173  
147  
65  
150 (17)a  
545 (61.8)  
MS40-7170  
MS40-7171  
a
120 Vac ±10%  
50 60  
8.5  
240 Vac ±10%  
10.8  
Approximate 2% torque derating per 1°F above 122°F in the drive direction.  
ACCESSORIES  
AM-620  
AM-621  
AM-703  
AM-704  
AM-705  
AM-706  
AM-707  
AM-708  
AM-751  
Remote mount single/dual damper actuator kit  
Round damper shaft extension kit (1/2" ID x 1" OD) for dual actuator mounting  
Span adjustment  
Modulation Interface, converts a PWM to 2 to 10 Vdc  
Positioner, remote/minimum positioning  
Positioner, flush mount digital position indicator  
Digital Indication  
Resistor for 500Ω modulating signal conversion  
Standard anti-rotation bracket 9" long x 13/16" wide (229 x 21 mm), included with  
actuator  
AM-752  
AM-753  
AM-754  
Optional anti-rotation bracket 4" long x 1-11/6" wide (102 x 43 mm), for narrow  
spaces  
Optional universal mounting clamps for 5/8"(16 mm) square shaft, 3/4" and 1"  
(19 to 25 mm) round shafts (two per package)  
Standard universal mounting clamps for 3/8" to 1/2" (10 to 13 mm) round and  
square shafts, two included with actuator  
AM-756  
AV-607  
Metric conduit adaptor M20 x 1.5 to 1/2" NPT (two per package)  
Dual mount rack and pinion valve linkage kit for 2-1/2" through 5" VB-8xxx series  
valve bodies and 2-1/2" to 4" VB-9xxx series valve bodies except VB-9323  
Dual mount rack and pinion valve linkage kit for 6" VB-8xxx series valve bodies and  
5" and 6" VB-9xxx series valve bodies except VB-9323  
1/2" Sealtight water tight conduit connector (straight)  
1/2" Sealtight water tight conduit connector (90°)  
1/2" Pipe plug, included with actuator  
AV-609  
TF-711-02  
TF-713-02  
X-5521  
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3
 
TYPICAL APPLICATIONS (wiring diagrams)  
2 to 10 Vdc  
MS40-7170  
Yellow/Black  
Gray  
AI  
+
Control  
Signal  
1
COM  
-
2
3
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
Blue  
AO  
Black  
L1  
120 Vac  
White  
L2  
Green/Yellow  
GRD  
1 Unused conduit port must remain plugged with a water  
tight pipe plug as shipped from factory to maintain  
NEMA Type 4 or IP56 rating.  
2 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
3 Keep AI, COM and AO wiring less than 30 meters  
length to meet CE requirements.  
Figure-1 Typical MS40-7170 2 to 10 Vdc Wiring Diagram.  
4 to 20 mA  
MS40-7170  
Yellow/Black  
AI  
+
Control  
Signal  
-
500 Ohm  
Gray  
1
COM  
2
3
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
Blue  
AO  
Black  
L1  
120 Vac  
White  
L2  
Green/Yellow  
GRD  
1 Unused conduit port must remain plugged with a water  
tight pipe plug as shipped from factory to maintain  
NEMA Type 4 or IP56 rating.  
2 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
3 Keep AI, COM and AO wiring less than 30 meters  
length to meet CE requirements.  
Figure-2 Typical MS40-7170 4 to 20 mA Wiring Diagram.  
4
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2 to 10 Vdc  
MS40-7171  
Yellow/Black  
Gray  
AI  
+
Control  
Signal  
1
COM  
-
2
3
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
Blue  
AO  
Brown  
L1  
240 Vac  
Light Blue  
L2  
Green/Yellow  
GRD  
1 Unused conduit port must remain plugged with a water  
tight pipe plug as shipped from factory to maintain  
NEMA Type 4 or IP56 rating.  
2 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
3 Keep AI, COM and AO wiring less than 30 meters  
length to meet CE requirements.  
Figure-3 Typical MS40-7171 2 to 10 Vdc Wiring Diagram.  
4 to 20 mA  
MS40-7171  
Yellow/Black  
AI  
+
Control  
Signal  
1
500 Ohm  
Gray  
COM  
-
2
3
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
Blue  
AO  
Brown  
L1  
240 Vac  
Light Blue  
L2  
Green/Yellow  
GRD  
1 Unused conduit port must remain plugged with a water  
tight pipe plug as shipped from factory to maintain  
NEMA Type 4 or IP56 rating.  
2 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
3 Keep AI, COM and AO wiring less than 30 meters  
length to meet CE requirements.  
Figure-4 Typical MS40-7171 4 to 20 mA Wiring Diagram.  
2 to 10 Vdc  
MS40-7173  
Yellow/Black  
Gray  
AI  
+
Control  
Signal  
1
2
COM  
-
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
Blue  
AO  
3
Transformer  
Red 24H (DC+)  
24 Vac or 22-30 Vdc  
Black  
24G (DC-)  
GRD  
Green/Yellow  
1 Unused conduit port must remain plugged with a water  
tight pipe plug as shipped from factory to maintain  
NEMA Type 4 or IP56 rating.  
2 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
3 Keep AI, COM and AO wiring less than 30 meters  
length to meet CE requirements.  
Figure-5 Typical MS40-7173 2 to 10 Vdc Wiring Diagram.  
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4 to 20 mA  
MS40-7173  
Yellow/Black  
AI  
+
Control  
Signal  
500 Ohm  
Gray  
1
2
COM  
-
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
Blue  
AO  
3
Red 24H (DC+)  
Black  
24G (DC-)  
GRD  
24 Vac Transformer  
or 22-30 Vdc  
Green/Yellow  
1 Unused conduit port must remain plugged with a water  
tight pipe plug as shipped from factory to maintain  
NEMA Type 4 or IP56 rating.  
2 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
3 Keep AI, COM and AO wiring less than 30 meters  
length to meet CE requirements.  
Figure-6 Typical MS40-7173 4 to 20 mA Wiring Diagram.  
2 to 10 Vdc  
Control  
MS40-717X  
Signal  
Yellow/Black  
Gray COM  
AI  
(+)  
(-)  
1
3
Blue  
AO  
4
5
GRD  
Green/Yellow  
MS40-717X  
1
3
Yellow/Black  
Gray  
AI  
COM  
Power  
2
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
4
5
Blue  
AO  
Green/Yellow  
GRD  
1 Unused conduit port must remain plugged with a  
water tight pipe plug as shipped from factory to  
maintain NEMA Type 4 or IP56 rating.  
4 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
2 See table for power wire designations.  
5 Keep AI, COM and AO wiring less than 30 meters  
length to meed CE requirements.  
3 Both actuators must be set to operate in the same  
direction.  
Power Wiring Identification.  
Voltage  
Designation  
Wire Color  
Red  
24H (DC+)  
24 Vac or  
22-30 Vdc  
24G (DC-)  
Black  
L1  
L2  
L1  
L2  
Black  
120 Vac  
240 Vac  
White  
Brown  
Light Blue  
Figure-7 Two Actuators on the Same Damper Shaft.  
6
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4 to 20 mA DC  
Controller  
MS40-717X  
Yellow/Black  
AI  
COM  
AO  
(+) 4 to 20 mA DC  
(-) Common DC  
1
3
500 Ohm  
Gray  
Blue  
5
4
GRD  
Green/Yellow  
MS40-717X  
Power  
2
3
1
Yellow/Black  
AI  
COM  
AO  
Gray  
Blue  
5
4
Position Feedback (-)  
Signal 2 to 10 Vdc (+)  
GRD  
Green/Yellow  
4 Color coding of wiring on older models (MX40-717x-0-  
0-0) manufactured prior to December, 2007, differs  
from current models. See Table 4 on page 14. Consult  
label on product to confirm wiring codes.  
1 Unused conduit port must remain plugged with a  
water tight pipe plug as shipped from factory to  
maintain NEMA Type 4 or IP56 rating.  
2 See table for power wire designations.  
5 Keep AI, COM and AO wiring less than 30 meters  
length to meed CE requirements.  
3 Both actuators must be set to operate in the same  
direction.  
Power Wiring Identification.  
Voltage  
Designation  
Wire Color  
Red  
24H (DC+)  
24 Vac or  
22-30 Vdc  
24G (DC-)  
Black  
L1  
L2  
L1  
L2  
Black  
120 Vac  
240 Vac  
White  
Brown  
Light Blue  
Figure-8 Typical 4 to 20 mAdc Control Wiring For Two Actuators On The Same Damper Shaft.  
INSTALLATION  
Inspection  
Inspect the package for damage. If damaged, notify the appropriate carrier immediately.  
If undamaged, open the package and inspect the device for obvious damage. Return  
damaged products.  
Requirements  
Job wiring diagrams  
Tools (not provided)  
– Socket wrench 1/2 inch, used for universal mounting clamp nuts  
– Open-end wrench 10 mm, used for installing AM-676 universal shaft extension  
– Slotted screwdriver, used for installing anti-rotation brackets  
– Allen wrench 3/16", used for manual override  
Appropriate accessories  
– Water tight 1/2 inch conduit seals TAC part number TF-711-02 or T&B #5332  
(straight, TAC part number TF-713-02 or T&B #5352 (90°), or equivalent.  
– Water tight 1/2 inch flexible conduit (e.,g. Anaconda: Sealtight) or 20 mm flexible  
water tight conduit when using AM-756 metric conduit adapter with appropriate  
metric water tight seals.  
– Water tight 1/2" flexible conduit (Anaconda: Sealtight) or 20 mm flexible water tight  
conduit when using AM-756 metric conduit adaptor  
– Two #8 1/2" (13 mm) sheet metal screws for mounting (optional)  
Training: Installer must be a qualified, experienced technician  
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7
 
Precautions  
General  
Warning:  
Electrical shock hazard! Disconnect the power supply (line power) before and during  
installation to prevent electric shock and equipment damage.  
Make all connections in accordance with the wiring diagram and in accordance with  
national and local electrical codes. Use copper conductors only.  
Caution:  
Avoid electrical noise interference. Do not install near large contactors, electrical  
machinery, or welding equipment.  
Avoid locations where excessive moisture, corrosive fumes, vibration, or explosive  
vapors are present.  
Federal Communications Commission (FCC)  
Note: This equipment has been tested and found to comply with the limits for a Class B  
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide  
reasonable protection against harmful interference in residential installations. This  
equipment generates, uses, and can radiate radio frequency energy and may cause  
harmful interference if not installed and used in accordance with the instructions. Even  
when instructions are followed, there is no guarantee that interference will not occur in a  
particular installation. If this equipment causes harmful interference to radio or television  
reception— which can be determined by turning the equipment off and on—the user is  
encouraged to try to correct the interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment to an outlet on a circuit different from that to which the receiver  
is connected.  
Consult the dealer or an experienced radio/television technician for help.  
Canadian Department of Communications (DOC)  
Note: This class B digital apparatus meets all requirements of the Canadian Interference-  
Causing Equipment Regulations.  
Cet appareil numerique de la classe B respecte toutes les exigences du Reglement sur le  
material broilleur du Canada.  
European Standard EN 55022  
Warning: This is a class B (European Classification) product. In a domestic environment  
this product may cause radio interference in which case the user may be required to take  
adequate measures.  
Location  
Caution:  
To maintain NEMA Type 4 rating, use water tight 1/2" flexible conduit only, with 1/2"  
conduit connector of the water tight type, TAC part number TF-711-02 or T&B #5332  
(straight), TAC part number TF-713-02 or T&B #5352 (90°), or equivalent.  
For metric conduit applications using AM-756 conduit adapters, use the appropriate  
metric water tight seals to maintain compliance with IP56 or NEMA Type 4 rating.  
Use a water tight 1/2" pipe plug in any unused actuator conduit ports and seal with  
water tight tape to stay in compliance with NEMA Type 4 or IP56 rating. Use TAC part  
number X-5521, Grinnell #8700159257 (black), Grinnell #8700159851 (galvanized), or  
equivalent. Actuators with unused conduit ports are shipped with the unused port  
plugged.  
8
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Mounting  
Mount the TAC DuraDrive Actuator directly on the damper shaft in locations that clear the  
maximum dimensions of the actuator case and allow the actuator to be mounted flush to the  
surface of the terminal box and perpendicular to the damper shaft.  
Note: Some terminal boxes have sheet metal screw heads or other protrusions near the  
damper shaft. In these cases, a spacer or shim may be added under the mounting tab of  
the actuator to make the actuator perpendicular to the shaft.  
Caution: To remain in NEMA 2 compliance the MS40-715X and MS40-707X series  
actuators should be mounted with conduit end down.  
Damper Actuator Sizing  
Correct sizing of the actuator is necessary for proper control of dampers. The area of  
damper that can be controlled by a given actuator is dependent upon the quality of the  
damper, the pressure drop across the damper in the closed position, and the velocity of the  
air flow through the damper. To obtain actual damper torque requirements, contact the  
damper manufacturer.  
Damper Shaft Sizing  
Use the “Long Damper Shaft” mounting instructions if the damper shaft is at least 4-5/8"  
(117 mm) long.  
Use the “Short Damper Shaft” mounting instructions if the damper shaft is shorter than 4-5/8"  
or the area around the damper shaft is too narrow to allow standard mounting, as described  
in the “Long Damper Shaft” mounting section. See Figure-9 for minimum shaft length.  
Min. 4-5/8" (117 mm)  
Figure-9 Long Damper Shaft Dimensions.  
Caution: The MS40-717X actuator is not designed to be used on aluminum damper  
shafts, solid steel shafts smaller than 1/2" diameter round or 1/2" square, or hollow steel  
shafts smaller than 3/4" round. The actuator can produce up to 545 in-lbs (61.8. N-m)  
maximum stall torque, which could result in the actuator snapping off an aluminum damper  
shaft or an improperly sized steel damper shaft. Refer to Table-2 for nominal damper shaft  
sizes.  
Table-2 Steel Damper Shaft Specifications.  
Damper Shaft Shape  
Damper Shaft Type  
O.D. (Nominal)a  
1/2" to 1"  
3/4"  
I.D. (Maximum)  
Solid bar  
0
0.375  
0.683  
0.626  
0.805  
0.808  
0.930  
0
13/16"  
Round  
27/32"  
Hollow tubing  
Solid bar  
7/8"  
15/16"  
1"  
Square  
1/2" to 5/8"  
a
Damper shaft sizes over 1/2" (13 mm) O.D. require AM-753 universal mounting clamps.  
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9
   
Mounting the Actuator for Clockwise or Counterclockwise Dampers  
The zero (0) position on the position indicator is the normal or spring return position. When  
the actuator is mounted with the “R” side facing the installer and the control signal increases  
the actuator will rotate in the counterclockwise direction. When the actuator is mounted with  
the “L” side facing the installer and the control signal increases the actuator will rotate in the  
clockwise direction.  
Long Damper Shafts  
1. Move the damper to its normal position. Verify the controller action is set to match the  
damper application (normally closed or normally open). See TYPICAL APPLICATIONS  
– For normally closed damper, when damper is closed the actuator position indicator  
should be at 0°. When damper is open the actuator position indicator should be at  
90°.  
– For normally opened damper, when damper is open the actuator position indicator  
should be at 0°. When damper is closed the actuator position indicator should be at  
90°.  
Note: The actuator comes equipped with two AM-754 universal mounting clamps. For  
damper shafts larger than 1/2" (13 mm) in diameter, the AM-753 universal mounting clamps  
are required (order separately). The AM-753 clamps accommodate round shaft sizes  
ranging from 3/4" to 1" (19 to 25 mm) or 5/8" (16 mm) square shafts.  
2. Slide the actuator over the shaft and into its desired final mounting position.  
– If the damper shaft rotates clockwise to the closed position, mount the actuator with  
the side marked “R” facing the installer. See Figure-10.  
– If the damper shaft rotates counterclockwise to the closed position, mount the  
actuator with the side marked “L” facing the installer. See Figure-11.  
3. Hand tighten the nuts on both of the actuator’s universal mounting clamps.  
4. Align the actuator at 90° (perpendicular) to the damper shaft. See Figure-12.  
5. Slide the anti-rotation bracket pin into the mounting slot on the actuator and drill  
mounting holes. See Figure-12. For narrow spaces the AM-752 anti-rotation bracket is  
recommended (order separately).  
6. Attach one side of the anti-rotation bracket to the mounting surface with one of the  
screws provided. Leave the screw loose so that the bracket can be rotated. See  
Figure-10 for clockwise or Figure-11 for counterclockwise spring return.  
7. Pivot the anti-rotation bracket away from the actuator. See Figure-10 or Figure-11.  
8. Loosen the universal mounting clamps, making sure not to move the damper shaft.  
Rotate the actuator approximately 5° in the direction which would open the damper. See  
9. Tighten all of the universal mounting clamp nuts with a 1/2" socket wrench. Apply  
4 to 6 ft -lbs (5 to 8 N-m) of torque.  
10. Manually rotate the actuator toward the full-closed position to apply pressure to the  
damper seals. See Figure-10 or Figure-11.  
11. Pivot the anti-rotation bracket into place and secure the other side of the bracket onto  
the mounting surface using the other screw provided with the actuator. See Figure-10  
12. Verify that the damper is in its full-closed position and actuator at 90° (perpendicular) to  
the damper shaft. See Figure-10 or Figure-11.  
10  
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CENTERLINE  
1
R
1
1 Two AM-754 Universal Mounting Clamp Assemblies  
are provided with each actuator. Each clamp  
assembly includes 1 universal mounting clamp and  
1 retaining clip. Two Universal Mounting Clamp  
Assemblies are required for all mounting  
configurations.  
5
Figure-10 Long Damper Shaft Mounting with Clockwise Spring Return for Normally Closed Damper.  
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11  
 
CENTERLINE  
1
1 Two AM-754 Universal Mounting Clamp Assemblies  
are provided with each actuator. Each clamp  
assembly includes 1 universal mounting clamp and  
1 retaining clip. Two Universal Mounting Clamp  
Assemblies are required for all mounting  
configurations.  
5
Figure-11 Long Damper Shaft Mounting with Counterclockwise Spring Return for Normally Closed Damper.  
Actuator mounting slot  
AM-751  
Anti-rotation bracket  
90  
90  
Figure-12 Mounting Anti-rotation Bracket to Actuator.  
12  
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Short Damper Shafts  
See Figure-13 for installation of actuator using the AM-676 Universal Shaft Extension.  
Installation requires AM-676 Universal Shaft Extension and AM-753 Universal Mounting  
Clamps for 3/4" to 1" (19 to 25 mm) shafts, these items must be ordered separately.  
1. Loosen the V-clamp nuts on the AM-676 universal shaft extension.  
2. Fit the universal shaft extension fully onto the damper shaft. Tighten the universal shaft  
extension V-clamp nuts with a 10 mm open-end wrench. Apply 4 to 6 ft. lbs  
(5 to 8 N-m) of torque.  
3. Move the damper to its normal position. Verify the controller action is set to match the  
– For normally closed damper: when damper is closed, actuator position indicator  
should be at 0°. When damper is open, actuator position indicator should be at 90°.  
– For normally opened damper: when damper is open, actuator position indicator  
should be at 0°. When damper is closed, actuator position indicator should be at  
90°.  
4. Remove the mounting clamps from the actuator and replace them with the AM-753  
universal mounting clamps.  
5. Loosen the nuts on both of the AM-753 universal mounting clamps on the damper  
actuator.  
– If the damper shaft rotates clockwise to the closed position, mount the actuator with  
the side marked “R” facing the installer. See Figure-10.  
– If the damper shaft rotates counterclockwise to the closed position, mount the  
actuator with the side marked “L” facing the installer. See Figure-11.  
6. Assemble the damper actuator onto the universal shaft extension, allowing the  
extension to slide through the actuator’s universal mounting clamps. Make sure the  
actuator is 90° (perpendicular) to the damper shaft. Then, hand tighten the nuts on both  
of the actuator’s universal mounting clamps. See Figure-12  
Note: If the universal shaft extension protrudes excessively above the damper actuator's  
top universal mounting clamp:  
remove the damper actuator from the universal shaft extension,  
remove the extension from the damper shaft,  
shorten the universal shaft extension by cutting it to the desired length,  
then proceed to follow mounting instructions.  
7. Slide the anti-rotation bracket pin into the mounting slot on the actuator. See Figure-12.  
For narrow spaces, the AM-752 anti-rotation bracket is recommended (order  
separately).  
8. Position the actuator and bracket in the desired final mounting position on the mounting  
surface and drill mounting holes. See Figure-13.  
9. Attach one side of the anti-rotation bracket to the mounting surface with one of the  
screws provided. Leave the screw loose so that the bracket can be rotated. See  
Figure-10 for clockwise or Figure-11 for counterclockwise spring return.  
10. Pivot the anti-rotation bracket away from the actuator. See Figure-10 or Figure-11.  
11. Loosen the universal mounting clamps, making sure not to move the damper shaft.  
Rotate the actuator approximately 5° in the direction which would open the damper. See  
12. Tighten all of the universal mounting clamp nuts with a 1/2" socket wrench. Apply  
4 to 6 ft-lbs (5 to 8 N-m) of torque.  
13. Manually rotate the actuator toward the full-closed position to apply pressure to the  
damper seals. See Figure-10 or Figure-11.  
14. Pivot the anti-rotation bracket into place and secure the other side of the bracket onto  
the mounting surface using the other screw provided with the actuator. See Figure-10  
15. Verify that the damper is in its full-closed position and actuator at 90° (perpendicular) to  
the damper shaft. See Figure-10 or Figure-11.  
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13  
Actuator  
AM-753  
Universal  
Mounting  
Clamps  
Anti-rotation  
Bracket  
(included with  
actuator)  
1
AM-676  
Universal Shaft  
Extension  
Mounting Surface  
V-clamp  
Duct  
1 The AM-676 extends the  
damper shaft approximately  
9" (229 mm).  
Damper Shaft  
Figure-13 Installation of Universal Shaft Extension.  
Wiring Requirements  
Control and Power Leads  
Remove blue plastic thread protectors before installing conduit fittings. See Figure-1 through  
Figure 8 for typical wiring applications and Table-3 for maximum wire lengths.  
Caution: The 24 Vac model contains a half-wave rectifier power supply and must not be  
powered by transformers used to power other devices utilizing non-isolated full-wave  
rectifier power supplies. Refer to EN-206 Guidelines for Powering Multiple Full-Wave and  
Half-Wave Rectifier Devices from a Common Transformer, F-26363, for further information.  
Note: Class 2 control and power lead wiring must be routed separately from line voltage  
wiring and any other non-class 2 circuits.  
Table-3 Control and Power Wiring Data.  
Maximum Wire Run in ft. (m)  
Actuator  
Voltage  
Part  
Number  
(5% Voltage Drop)  
14 AWG  
16 AWG  
18 AWG  
24 Vac and  
22-30 Vdc  
MS40-7173  
981  
617  
388  
120 Vac  
240 Vac  
MS40-7170  
MS40-7171  
(299)  
(188)  
(118)  
Table-4 Wire Color Codes for Models Manufactured before December, 2007.  
Power  
Analog  
Input  
Part Number  
L1  
L2  
Ground  
24 H  
Black  
N/A  
24 G  
Black/Blue  
N/A  
500 Ohms  
Common  
Voltage  
MS40-7173-0-0-0  
Old Design  
24 Vac  
N/A  
N/A  
Green/Yellow  
Green/Yellow  
Green/Yellow  
White  
Red  
Red  
Red  
Black  
Black  
Black  
MS40-7170-0-0-0  
Old Design  
120 Vac  
240 Vac  
Black White  
White  
White  
MS40-7171-0-0-0  
Old Design  
Light  
Brown  
N/A  
N/A  
Blue  
N/A: Not Applicable  
14  
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CHECKOUT  
This procedure is for checking out a normally closed actuator that is typically mounted  
unpowered. It is possible to mount the actuator with power applied for special applications.  
Note: To check out a normally opened actuator the procedure is the same as below, except  
the initial position is open and closed when powered.  
After the entire system has been installed and the actuator has been powered up, the  
following check can be made for proper system operation. Check for correct operation of the  
damper while actuator is being stroked.  
1. Apply power to the actuator and control system.  
2. Set the controller to cause the actuator to drive open (set override controller output to  
maximum).  
3. Check to see that the actuator travels to the full-open position.  
4. Set the controller to cause the actuator to drive closed (set override controller output to  
minimum).  
5. Check to see that the actuator travels to the fully closed position.  
Note: If anticipated damper operation does not occur, verify the Long Damper Shaft or  
Short Damper Shaft mounting procedures. Also, verify that the controller has the proper  
action (direct or reverse) to match the damper required operation.  
THEORY OF OPERATION  
The actuator is, by means of dual mounting clamps, directly mounted onto the damper shaft.  
The anti-rotation bracket supplied with the actuator prevents lateral movement of the  
actuator. The damper actuator is not provided with and does not require any limiting  
switches, but is electronically protected against overloading.  
The angle of rotation is electronically limited to 92° ±1°. When reaching the damper or  
actuator end position, the motor stops automatically. The position of the actuator is indicated  
by means of scale reading 0 to 95°.  
MAINTENANCE  
FIELD REPAIR  
Regular maintenance of the total system is recommended to assure sustained optimum  
performance. The MS40-717X actuator is maintenance free.  
None. Replace with functional actuator.  
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15  
DIMENSIONAL DATA  
Figure-14 dimensions are in inches (mm).  
4"  
(102)  
4"  
(102)  
1-27/64"  
(36)  
10-27/32 (275)  
Figure-14 MS40-717X Damper Actuator.  
On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the vi sual identity of Schneider Electric,  
however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate  
corporate brand changes.  
Copyright 2010, Schneider Electric  
Schneider Electric  
1354 Clifford Avenue  
P.O. Box 2940  
All brand names, trademarks and registered  
trademarks are the property of their respective  
owners. Information contained within this  
document is subject to change without notice.  
Loves Park, IL 61132-2940  
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