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
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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
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
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
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
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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.
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
5
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
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
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
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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
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
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.
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
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
– If the damper shaft rotates counterclockwise to the closed position, mount the
3. Hand tighten the nuts on both of the actuator’s universal mounting clamps.
5. Slide the anti-rotation bracket pin into the mounting slot on the actuator and drill
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
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
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
10
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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.
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
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
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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
– If the damper shaft rotates counterclockwise to the closed position, mount the
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.
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
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
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
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
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
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
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
© Copyright 2010 Schneider Electric All Rights Reserved.
F-26748-6
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.
F-26748-6
© Copyright 2010 Schneider Electric All Rights Reserved.
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
F-26748-6
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