SmartX ™ Direct Coupled Actuators are designed to be used
in both damper and valve control applications. The follow
general instructions are for damper applications, refer to the
Applicable Literature table for valve literature.
The MA40-704X, MA41-707X and MA41-715X series spring
return actuators are used for the on-off, fail safe control of
dampers and valves in HVAC systems.
Features
•Two-position actuator controlled by SPST controller
•Optional built-in auxiliary switch to provide for interfacing
or signaling
•Provides 95° of rotation
•Visual position indicator provided
•Provides true mechanical clockwise or counterclockwise
spring return operation for reliable fail safe application and
positive close-off in air tight damper applications
•Direct mount to round or square damper shafts
•Rotation limiting available
•MA41-7153 series actuators can be double-mounted
(gang mounting) to accommodate high torque application
requirements
•Five year warranty
•MA41-707X-XXX and MA41-715X-XXX equipped with
manual override
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Describes the globe valve actuator/linkage assembly’s
features, specifications, and possible applications. Provides step-by-step mounting instructions.
Describes the actuator/linkage/ball valve assembly’s features, specifications, and possible applications. Provides
step-by-step mounting instructions.
Provides actuator specifications and part number cross
referencing of phased out actuators with the new directcoupled actuators.
Provides part number cross referencing of phased out
globe and ball valve assemblies with the new directcoupled actuators.
Describes Schneider Electric approved water treatment
practices.
Provides charts, equations, and diagrams to assist in the
configuration of valve system applications. TOOL-150,
valve sizing slide rule may be purchased separately.
Installation Instructions
Specifications
Actuator Inputs
Control Signal On-off, spring return. SPST control
contacts or Triacs (500 mA rated).
Power Input See Table-1. All 24 Vac circuits are
Class 2. All circuits 30 Vac
and above are Class 1.
Connections 3 ft. (91 cm) appliance cables 1/2 in.
conduit connector.
For M20 Metric conduit, use
AM-756 adaptor.
Actuator Outputs
Electrical: Auxiliary Switches
MA41-715X-502 and MA41-707X-502 Two SPDT 7A (2.5A) @250 Vac,
UL listed; one fixed @ 5° and one
adjustable 25 to 85°
MA40-7040-501 and MA40-7041-501 One SPDT 6A (1.5A) @250 Vac,
UL listed; adjustable 15 to 95°
(MIN to 1 scale)
MA40-7043-501 One SPDT 6A (1.5A) @24 Vac, UL listed;
adjustable 15 to 95° (MIN to 1 scale).
Mechanical
Stroke, Angle of rotation 95° ± 5° maximum. Adjustable 30° to 95°
with AM-689 installed on
MA41-715X or MA41-707X series.
Stroke limiter is standard on
MA40-704X series.
Damper Shaft Clamp
MA40-704X The factory installed universal
clamp is used for shafts up to 5/8”
(15mm) diameter or up to 1/2” (13 mm)
square. AM-710 accessory clamp is
required when mounting actuators to
shafts up to 3/4” (19 mm) diameter or
up to 1/2” (13 mm) square.
MA41-715X or MA41-707X The factory installed universal clamp is used
for shafts up to 3/4” (19 mm) diameter or
up to 1/2” (13 mm) square. AM-687
accessory clamp is required when
mounting actuators to shafts up
to 1.05” (27mm) in diameter or
up to 5/8” (15 mm) square.
Position Indicator Visual indicator
MA41-715X and MA41-707X -5 to 90° (-5° is spring return position)
MA40-704X 0 to 1 (0 is spring return position)
Nominal Damper Area Actuator sizing should be
done in accordance with damper
manufacturer’s specification.
Direction of Rotation Clockwise or counterclockwise
rotation determined by actuator mounting
Manual Override
MA41-707X and MA41-715X rotation adjustable from -5° to 85° using manual
override crank
Environment
Ambient Temperature Limits
Shipping & Storage -40 F to 160°F (-40 to 71°C)
Operating -22 to 140°F (-30 to 60°C)
Humidity 15 to 95% RH, non-condensing
Enclosure Rating
MA41-715X and MA41-707X NEMA 1 (IEC IP30). NEMA 2
(IEC IP54) with conduit
connector in the down position
MA40-704X NEMA 2 (IEC IP54) no restrictions
Agency Listings
UL 873 Underwriters Laboratories
a - Timing was measured with no load applied to the actuator.
b - De-rating is required at low temperatures.
c - One adjustable from 25 to 85° rotation and one set to operate @ 5° fixed.
d - One adjustable from 15 to 95° rotation (MIN to 1 scale)
Accessories
For use with MA41-7XXX:
AM-671 Universal Mounting Bracket, AM-693 is required
AM-672 Universal Mounting Bracket, AM-693 is required
AM-673 Mounting Bracket
AM-674 Weather Shield
AM-675 Base Mounting Plate for AM-674
AM-676 Universal Shaft Extension
AM-714 Weather Shield (polycarbonate)
AM-756 Metric Conduit Adapter M20 x 1.5 to 1/2” NPT
AM-761 7-inch Anti-rotation Bracket
AM-762 9-inch Anti-rotation Bracket
For use with MA40-7043:
AM-709 Position Indicator and Stroke Limiter
AM-710 Universal Clamp for up to 3/4” diameter shafts
AM-711 Crankarm for up to 1/2” round shaft
AM-712 Crankarm Adapter Kit
AM-713 Mounting Bracket for Honeywell Mod IV, M6415
For use with MA41-7073, MA41-7153
AM-686 Damper Position Indicator
AM-687 Universal Clamp for up to 1.05” (27 mm) diameter
shafts
AM-688 Replacement Universal Clamp
AM-689 Rotation Limiter
AM-690 Crankarm for round shafts up to 3/4” (19 mm)
AM-691 Crankarm for jackshafts up to 1.05” (27 mm)
AM-692 V-bolt Kit for AM-690 and AM-691 Crankarm
AM-693 Damper Linkage Kit
AM-758 Short “U” Mounting Bracket
AM-759 Tall “U” Mounting Bracket
AM-760 Slotted “L” Mounting Bracket
AM-763 1/8” Hex Crank for Manual Override
Page 4
TYPICAL APPLICATIONS (wiring diagrams)
Figure-1 through Figure-3 illustrate typical wiring diagrams for
spring return floating actuators. See Available Models.
Installation Instructions
Figure 1 Typical Wiring Diagram for 24 Vac Basic and Double Auxiliary Switch Models.
MA41-707X-502 and MA41-715X-502 units manufactured prior to the date code 0141 (October 6, 2001) used the following color
coding for the auxiliary switches:
Auxiliary Switch 1
Orange: Fixed auxiliary switch common (com)
Yellow: Fixed auxiliary switch normally closed (NC)
Violet: Fixed auxiliary switch normally open (NO)
Yellow/white: Adjustable auxiliary switch normally open (NO)
The label information on these units is incorrect. If replacing these units, the auxiliary switch operation of the replacement actuator will be per the product label.
Figure 2 Typical Wiring Diagram for 120 Vac or 230 Vac Basic and Single Auxiliary Switch Models.
Figure 3 Typical Wiring Diagram for 24 Vac Basic and Single Auxiliary Switch Models.
Installation
•If the universal clamp is not set to 0° on the position
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):
–#8 sheet metal screws
–10mm open end wrench or socket wrench
–7/16 inch, open end wrench or socket wrench
–1/8 inch, allen wrench
–Appropriate screwdriver(s)
•Appropriate accessories
•Training: Installer must be a qualified, experienced
technician
Precautions
Notices
•Electrical shock hazard! Disconnect the power supply (line
power) before installation to prevent electric shock and
equipment damage.
•Make all connections in accordance with the job wiring
diagram and in accordance with national and local
electrical codes. Use copper conductors only.
•Avoid electrical noise interference. Do not install near large
contactors, electrical machinery, or welding equipment.
•Do not drill holes in actuator body. Six pre-drilled holes are
located on each side, under the label, to accept #10-24
thread-forming screws for mounting accessories.
Manual Override
The MX41-707X & MX41-715X actuators are equipped with a
manual override.
•The manual override is to be used only when power is not
indicator, manually wind the actuator in the direction
indicated with hex wrench from -5° to 0° and lock with a
screwdriver.
•When operating manual override, back off 5° from full
open mechanical stop to ensure proper release.
•Do not attempt to use the manual override with actuators
mounted in tandem. Damage to the gear train may occur.
Federal Communications Commission (FCC)
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 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)
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
Notice: This is a Class B digital (European Classification)
product. In a domestic en
vironment this product may cause
Page 6
radio interference in which case the user may be required to take
adequate measures.
Enclosure Rating
Notice: Avoid locations where excessive moisture, corrosive
fumes, vibration, or explosive vapors are present.
Mounting
Notice: To remain in NEMA 2/IP54 compliance, the MA4X-715X
and MA4X-707X series actuators should be mounted with conduit
end down.
Mount the SmartX 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.
: Some terminal boxes have sheet metal screw heads or other
Note
protrusions near the damper shaft. In these cases, a spacer or
shim may be added under the anti-rotation bracket of the actuator
to make the actuator perpendicular to the shaft.
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 type of damper, 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.
Installation Instructions
Damper Shaft Sizing
Use the “Long Damper Shaft” mounting instructions if the damper
shaft is at least 3-1/2” (90 mm) long.
Use the “Short Damper Shaft” mounting instructions if the damper
shaft is shorter than 3-1/2” (90mm) or the area around the damper
shaft is too narrow to allow standard mounting, as described in the
“Short Damper Shaft” mounting section.
This step determines
shaft rotation. Linkage
may change damper direction.
Long Shaft
Short Shaft
Min. 3 1/2" (90 mm)
3/8" to 3/4" Diameter (10 mm to 20 mm)
3/8" to 1/2" Square (10 mm to 13 mm)
Min. 3/4" (20 mm)
Move the damper to its normal position. Verify the controller action is set to match the
damper application.
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°.
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°.
MA40-704X Series Installation
Note: The MA40-704X series actuator comes equipped with standard universal mounting clamp. For damper shafts larger than
5/8” (16 mm) in diameter, the AM-710 universal mounting clamp is required (order separately). The AM-710 clamp accommodates
shafts sizes up to 3/4” (19mm) diameter shafts.
Caution: Do not drill additional holes in the actuator body. Six pre-drilled holes are located on each side, under the label, to accept #10-24 thread-forming screws for mounting accessories.
Note: The MA41-707X and MA41-715X series actuators come equipped with standard universal mounting clamp installed. For
damper shafts larger than 3/4” (19 mm) in diameter, the AM-687 universal mounting clamp is required (order separately). The
AM-687 clamp accommodates round shaft sizes up to 1.05” (27 mm) in diameter or 5/8” (16 mm) square shafts.
Caution: The MA41-707X and MA41-715X actuators are equipped with a manual override.
The manual override to be used only when power is not applied to the unit.
If the universal clamp is not set to 0° on the position indicator, manually wind the actuator in the direction indicated with hex
wrench from -5° to 0° and lock with a screwdriver.
When operating manual override, back off 5° from full open mechanical stop to ensure proper release.
Do not attempt to use the manual override with actuators mounted in tandem. Damage to the gear train could occur.
Using power tools to adjust the manual override will cause damage to the gears.
To unlock manual override without power, crank the manual override in the direction indicated a minimum of 5°.
The MA40-704X actuator is designed for use with jackshafts
up to 3/4” (19 mm) in diameter. In most applications, the
MA40-704X actuator may be mounted in the same manner as
a standard damper shaft application. If the jackshaft diameter
is larger than 5/8” (16 mm) in diameter, the optional AM-710
universal clamp must be used.
MA41-715X and MA41-707X Series
The MA41-715X and MA41-707X actuators are designed for
use with jackshafts up to 1.05” (27mm) in diameter. In most
applications, the actuator may be mounted in the same manner as a standard damper shaft application. If the jackshaft
diameter is larger than 3/4” (19 mm) in diameter, the optional
AM-687 universal clamp must be used.
Multiple Actuator Mounting
If more torque is required than one actuator can provide a
second actuator may be mounted to the damper shaft, using
the AM-673 multiple mounting bracket. See Figure-4.
Multiple actuators may be powered from one transformer provided the following rules are followed:
•The total current draw of the actuators (VA rating) is less
than or equal to the rating of the transformer and less than
the rating of the control circuit.
•Polarity on the secondary of the transformer is strictly
followed.
–All L2 wires from all actuators are connected to the
common lead on the transformer.
–All L1 wires from all actuators are connected to the
hot lead.
Caution
Mixing the L2 and L1 wires on one lead of the transformer
may result in erratic operation or failure of the actuator and/or
controls.
Caution
Do not attempt to use the manual override with actuators
mounted in tandem. Damage to the gear train may occur.
Multiple actuators positioned by the same control signal may
be powered from multiple transformers provided the following
rules are followed:
•The transformers are properly sized.
•All L2 wires from all actuators are tied together and tied to
the negative lead of the control signal.
See Table-3 for power wiring data. Refer to Figure-1 through
Figure-3 for typical wiring applications.
: Class 2 control and power lead wiring must be routed
Note
separately from line voltage wiring and any other non-class
2 circuits. Line voltage, auxiliary switch, and auxiliary switch
leads must be connected to a class 1 circuit.
Table 3. Power Wiring Data.
Actuator
Voltage
24 Vac
22…30 Vdc
24 Vac
22…30 Vdc
24 Vac
22…30 Vdc
Part Number
MA41-7153
MA41-7153-502
MA40-7043
MA40-7043-501
MA41-7073
MA41-7073-502
Auxiliary Switches
The MA40-704X-501 series actuators include one built-in SPDT
auxiliary switch which can be used for interfacing or signaling
(e.g., for fan start-up). The switch is adjustable between 15°
and 95° of rotation (MIN to 1 scale).
The MA41-715X-502 and MA41-707X-502 series actuators
include two built-in SPDT auxiliary switches which can be used
for interfacing or signaling (e.g., for fan start-up). The switch
position near the normal (spring return) position is fixed at 5°.
The other is adjustable between 25° and 85° of rotation.
Maximum Wire Run in ft. (m)
(5% Voltage Drop)
14 AWG16 AWG18 AWG
330 (101)200 (61)130 (40)
1100 (335) 700 (213)440 (134)
600 (183)500 (152)254 (77)
Rotation Limitation for MA40-704X Series
The Stop Block is used in conjunction with the tab on the universal clamp or the AM-709 position indicator. In order to function properly, the clamp or indicator must be mounted correctly.
The Stop Block controls the rotational output of the MA40-704X
and MF40-704X-501 actuators. It is used in applications where
a damper has a designed rotation that is less than 90°, for
example with a 45° or 60° rotating damper.
1. Determine the amount of damper rotation required. The
actuator stop block provides limited rotation from 40° to
95°.
2. Loosen the screw securing the stop block to the actuator.
Note: The actuator is shipped with the Stop Block mounted to
the “L” side. If the damper application requires the “R” side
face the installer, simply remove the Stop Block and screw and
move it to the new location.
3. Slide the stop block into position, so that its edge lines
up with the degree graduation on the actuator face which
corresponds with the required rotation. See Figure-5.
4. Secure the stop block in place.
5. Test the damper rotation by applying power. Re-adjust if
necessary.
Adjusting the Switching Point
Refer to Table-4 for auxiliary switch rating.
Figure 5 Adjusting Stop Block for Limited Rotation.
Adjusting the switching point for MA40-704X-501
The actuator must be in its normal (spring return) position.
Use a flat screw driver to rotate the switch pointer until it is at
the desired switch position on the MIN to 1 scale.
Adjusting the switching point for MA41-715X-502 or
MA41-707X-502
The actuator must be in its normal (spring return) position.
Insert a 1/8” allen wrench into the hex hole located in the
center of the adjustable switch pointer.
Rotate the wrench until the switch pointer is at the desired
switch position in degrees, from 25 to 85°.
Rotation Limitation for MA41-715X and
MA41-707X Series
The AM-689 rotation limiter is used in conjunction with the tab
on the universal clamp or the AM-686 position indicator which
comes with the AM-689. In order to function properly, the
clamp or indicator must be mounted correctly.
The AM-689 rotation limiter controls the rotational output of the MA41-715X, MA41-715X-502, MA41-707X, and
MA41-707X-502 actuators. It is used in applications where a
damper has a designed rotation that is less than 90°, for example with a 45° or 60° rotating damper.
1. Determine the amount of damper rotation required.
2. Locate the AM-689 rotation limiter on the actuator so that
its edge lines up with the degree graduation on the actuator face which corresponds with the required rotation. See
Figure-6.
3. Find the appropriate cross-hair location through the slot
of the rotation limiter. This is the mounting location for the
retaining screw.
4. Pierce through the label material to allow easy fastening of
the retaining screw.
5. Position the rotation limiter back to the desired position,
Document Number: F-26642-11
Page 17
Installation Instructions
30
40
50
60
70
80
90
Screw secured at
these cross hairs.
30
40
50
60
70
80
90
Angle of rotation
is now set at 40.
30
40
50
60
70
80
90
making sure the locating “teeth” on the rotation limiter are
engaged into the locating holes on the actuator.
6. Fasten the rotation limiter to the actuator using the selftapping screw provided.
7. Test the damper rotation by applying power. Re-adjust if
necessary.
Figure 6 Securing the AM-689 Rotation Limiter.
Checkout
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.
Apply power to the actuator. Actuator and damper should be
driven to their powered position.
On the MA4X-7XXX-50X models, check for correct auxiliary
switch operation.
Break power to the actuator. Actuator and damper should
return to their normal, or spring return position.
Table 5. Power Wiring Color Code.
Part NumberL1L2
MA4X-7XX3
MA4X-7XX3-502
MA4X-7XX0
MA4X-7XXX-502
MA4X-7XX1
MA4X-7XXX-502
RedBlack
BlackWhite
BrownLight Blue
Theory Of Operation
The actuators are mounted directly onto a damper shaft using
a universal V-clamp. When power is applied, the actuator rotates 95° to its powered position, at the same time tensing the
spring return safety mechanism. When power is removed, the
spring returns the actuator to its normal position. The actuators
provide true mechanical spring return operation for reliable,
positive close-off on air tight dampers.
The MA41-707X, MA41-707X-502, MA41-715X, and MA41715X-502 actuators are equipped with a graduated position
indicator showing -5° to 90°. The MA40-704X and
MA40-704X-501 are equipped with a graduated position indicator showing 0 to 1.
The MA40-704X-501 models are provided with 1 built in
auxiliary switch. The SPDT switch is provided for interfacing or
signaling, for example, fan start-up. The switching function is
adjustable between 15° to 95° rotation (MIN to 1 scale).
The MA41-715X-502 and MA41-707X-502 models are provided
with 2 built in auxiliary switches. The SPDT switches are provided for interfacing or signaling, for example, fan start-up. The
switching function is adjustable on one switch between 25° to
85° rotation and the other switch is fixed at 5°.
The MA41-707X-XXX and MA41-715X-XXX actuators are
equipped with a manual override mechanism. This allows the
actuator to be manually positioned at any point between -5°
and 85°. This mechanism is accessible on both sides of the
actuator and can be used to ensure tight close-offs for valves
and dampers. The manual override should not be used while a
unit is powered or on units that are mounted in tandem.
Maintenance
Regular maintenance of the total system is recommended to
assure sustained optimum performance. The actuators are
maintenance free.