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Schneider Electric Damper Actuators User Guide 8 Pages Pagine ページ
Schneider Electric Damper Actuators are pneumatic actuators used to control dampers, mixing boxes, and air valves in heating, ventilating, and air conditioning systems. They have an 8-inch² effective area and a maximum air pressure of 30 psig. The actuators are constructed from die-cast aluminum and have a beaded molded neoprene diaphragm. They have a spring that retracts the actuator shaft on loss of air pressure and can be mounted in any position. The actuators come with a mounting bracket (except MK-3300 Series end mounting) and a connector for a 5/16" diameter push rod.
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MK-3000 Series, MK2-3000
Series, MK4-3000 Series
Pneumatic Damper Actuators
General Instructions
APPLICATION
Proportional pneumatic actuator with 8 in.
2
(52 cm
2
) effective area used to control dampers, mixing boxes, air valves, etc., in heating, ventilating and air conditioning systems,
MK2-31X1 used for high temperatures.
SPECIFICATIONS
Construction:
Housing, Die cast aluminum.
Diaphragm, Beaded molded neoprene. MK2-31X1 only -
Beaded molded silicone.
Stroke: See Table 2.
Start Point: Adjustable on most models ± 1 psi, see Table 2.
Spring: Retracts actuator shaft on loss of air pressure.
Maximum Air Pressure: 30 psig (207 kPa).
Ambient Temperature Limits:
Shipping, -40 to 160
°F (-40 to 71°C).
Operating, -20 to 160
°F (-29 to 71°C).
MK2-31X1 only,
Shipping, -40 to 250
°F (-40 to 121°C).
Operating, -20 to 250
°F (-29 to 121°C), for 30 minute exposure 450
°F (232°C).
Air Connections: 1/8” FNPT.
Mounting: In any position. Mounting bracket (except
MK-3300 Series end mounting) and connector for 5/16" (8 mm) diameter push rod included with actuator.
Dimensions: 12" high x 5-7/8" wide x 5-1/2" deep (305 mm x 143 mm x 140 mm)
Table-1 Nominal Damper Area For Proportional Control a
ACCESSORIES
AK-42309-500
AM-111
AM-112
AM-113
AM-115
AM-122
AM-123
AM-125
AM-125-048
AM-132
AM-161-3
AM-301
AM-530
AM-532
AM-533
AM-534
AM-535
AM-536
AM-545
TOOL-95
Positive positioner and linkage, do not use with
MK2-3100 series
Crank arm for 5/16 " diameter damper shaft
Crank arm for 3/8 " diameter damper shaft
Crank arm for 1/2 " diameter damper shaft
Crank arm for 7/16 " diameter damper shaft
Linkage connector straight type
Damper clip
5/16 " x 20 " damper rod
5/16 " x 48 " damper rod
Ball joint connector
Damper linkage kit
90
°
mounting bracket for pivot mounting
Crank arm for 1/2 " diameter damper shaft holes for 3-1/2 " and 4-1/2 " stroke
Bolt-on frame lug and damper blade clip kit
Actuator shaft extension
Pivot stud for pivot mounting
Clevis for pivot mounting
Mounting plates for pivot mounting on ducts or damper frame
Rod end connector for 5/16 " (10 mm) dia. rods
Pneumatic calibration tool kit
Actuator Part
Number
MK-3101
MK-3101-108
MK2-3101
MK4-3101
MK-3111
MK2-3111
MK-3121-109
MK-3121
MK2-3121
MK-3141
MK4-3141
MK-3151
MK-3161 b
MK-3201
MK-3211
MK-3221
MK-3311-109
MK-3321-102
MK-3801
MK4-3801
MK-3811
MK-3821
MK-3841
MK4-3841
MK4-3111 c
MK4-3121 d
Parallel Blades ft
2
11.6
23.2
34.8
m
2
1.07
2.15
3.23
Opposed Blades ft
2
15
30
45 m
2
1.39
2.79
4.18
b c d a
For two-position control use proportional rating of the same actuator with positive positioner. Damper ratings are nominal and based on standard
(not low leakage) dampers at 1" (25.4 mm) W.C. static pressure and 2000 fpm (10 m/s) velocity.
Requires 20 psi be available to the actuator.
Requires minimum 15 psi be available to the actuator.
Proportional control with positioner (8-13 spring, 20 psi supply).
Printed in U.S.A. 1/10
© Copyright 2010 Schneider Electric All Rights Reserved.
F-12586-11
Table-2 Specifications.
Maximum Force b
Part Number
Nominal
Operating
Range
Starting
Pressure
Nominal
Stroke a
Return
Stroke
Based on
1.5 psi
(10 kPa)
Pressure to
Actuator lb.
N
15 psi
(103 kPa)
Supply
Dual Press.
System
Power Stroke
15 psi
(103 kPa)
Supply
Single
Press.
System d lb. N
20 psi
(138 kPa)
Supply
Single or
Dual Press.
System lb.
N
MK-3101-108 psig
3-7.2
kPa
21-50 psig
3 ± 1 kPa
21 ± 7 in. (mm)
3 (76)
Adjustable
2 to 4 (51 to 102)
12 53 lb.
50
N
226 62 276 102 454
MK-3101
MK2-3101
MK4-3101 e
MK-3111
MK2-3111
MK4-3111
MK-3121
MK-3121-109
MK-3141
3-8
3-8
5-10
5-10
8-13
21-55
21-55
34-69
34-69
55-90
3 ± 1
3 ± 1
5 ± 1
5 ± 1
8 ± 1
21 ± 7
21 ± 7
3 ± 7
34 ± 7
55 ± 7
3 1/2 (89)
Adjustable
2 to 4 (51 to 102)
12
12
28
28
52
53
53
125
125
231
44
44
28
28
4
196
196
125
125
18
56
56
40
40
16
249
249
178
178
71
96
96
80
80
56
427
427
356
356
249
MK-3151
MK-3161
MK-3201
MK-3211
MK-3221
MK-3311-109
MK-3321-102
8-13
3-13
3-6
9-12
3-6
11-17
3-8
21-41
62-83
21-41
76-117
21-55
5-10 34-69
8-13
5-10
8-13
55-90
21-90
55-90
34-69
55-90
8 ± 1
3 non-adj
3-6
3-6
3 ± 1
5 ± 1
8 ± 1
5 ± 1
8 ± 1
55 ± 7
21 non-adj
21 to
41
21 to
41
21 ± 7
2-3/4 (70)
Adjustable
2 to 2-3/4
(51 to 70)
34 ± 7
55 ± 7
90 o
Rotation
Typical,
Adjustable
1.2 to 4.4
(30 to 111)
34 ± 7 3-1/2 (89)
Adjustable
55 ± 7
2 to 4 (51 to 102)
52
12
12
12
12
28
52
28
52
231
53
53
53
53
125
231
125
231
4
4
12
0
44
28
4
28
4
18
18
53
0
196
125
18
125
18
16
16
24
0
56
40
16
40
16
71
71
107
0
249
178
71
178
71
56
56
64
24
96
80
56
80
56
249
249
285
107
427
356
249
356
249
MK-3801
MK-3811
3-8 21-55 3 ± 1 21 ± 7 12 53 44 196 56 249 96 427
MK4-3811
MK-3821
5-10 34-69
5-10 34-69
8-3 55-90
5 ± 1
5 ± 1
8 ± 1
34 ± 1
34 ± 1
55 ± 1
55 ± 1
21 non-adj
3-1/2 (89)
Adjustable
2 to 4 (51 to 102)
28 125 28
28 125 28
52 231 4
125
125
18
40
40
16
178
178
71
80
80
56
356
356
249 c d a b e
MK-3841
8-13
3-13
55-90
21-90
8 ± 1
3 non-adj
52
12
231
53
4
4
18
18
16
16
71
71
56
56
Factory setting required for published operating range.
Force and torques based on factory set stroke and starting pressure.
Nominal torque for actuators without positive positioner is based on 1.5 psi pressure change at the actuator.
Adjust pressure reducing valve so that listed pressures are available at the actuator.
Factory installed positive positioner (AK-42309-500) start point adjustable 2 to 10 psi with range adjustable 2 to 10 psi.
249
249
79
79
Nominal Torque c
Proportional Control
15 psi
(103 kPa)
Supply Dual
Press.
System
15 psi
(103 kPa)
Supply
Single Press.
System
20 psi
(138 kPa)
Supply
Single or
Dual Press.
System
lb-in.
N-m lb-in.
N-m lb-in.
N-m
18
21
21
21
49
7
7
7
21
0
21
21
7
21
7
21
21
49
7
7
7
2.03
2.37
2.37
2.37
5.54
79
79
79
2.37
0
2.37
2.37
.79
2.37
.79
2.37
2.37
5.54
79
18
21
21
21
49
21
28
21
21
0
21
21
21
21
21
21
21
49
21
28
21
2.03
2.37
2.37
2.37
5.54
2.37
3.16
2.37
2.37
0
2.37
2.37
2.37
2.37
2.37
2.37
2.37
5.54
2.37
3.16
2.37
18
21
21
21
49
21
91
21
21
21
21
21
21
21
21
21
21
49
21
91
21
2.03
2.37
2.37
2.37
5.54
2.37
10.28
2.37
2.37
2.37
2.37
2.37
2.37
2.37
2.37
2.37
2.37
5.54
2.37
10.28
2.37
2 © Copyright 2010 Schneider Electric All Rights Reserved.
F-12586-11
Figure-1 MK-3100 Series Dimensions.
1
Figure-2 MK-3200 Series Dimensions.
Mounting plate for MK-3101-108 and MK-3300-102
Series Actuators
Figure-3 MK-300 Series Dimensions
2
.
1.
All dimensions shown in the Instruction Sheet are in inches.
F-12586-11
Figure-4 MK-3800 Series Dimensions.
2.
Typical Model shown. Linkage, and air connection details may vary from
Model to Model.
© Copyright 2010 Schneider Electric All Rights Reserved.
3
MK-3100 Series Typical Mounting
Accessories Required for Mounting Per Figure 5
1 — AM-113 Crank arm.
1 — AM-122-0-0-2 or AM-132-0-0-2 ball joint.
1 — AM-125 link rod 5/16-inch x 20 inches.
To mount proceed as follows. Refer to Figure 5.
1. Measure a minimum of 8 inches from damper shaft in the direction of actuator location.
2. Hold actuator up to duct with actuator shaft approximately
1-1/2 inches above (N.C.) or below (N.O.) damper shaft and mark mounting holes.
3. With drill or punch, pierce holes marked in Step 2.
4. Mount actuator to duct.
5. Attach ball joint to crank arm at approximately 2-1/2 inches from center of shaft hole.
6. Attach crank arm to damper shaft at approximately 45
° angle, from vertical, toward actuator with damper in the normal actuator retracted position.
7. Connect actuator ball joint to crank arm ball joint with
5/16-inch diameter rod. Cut off excess rod.
8. Refer to Checkout.
Figure-5 MK-3100 Series Typical Mounting.
MK-3300 Series Typical Mounting
Note: MK-3300 Series Models are designed for Mixing Box applications. Mounting, Linkage, and air connection details vary among Models. See Actuator Selection Sheet F-13795 for more information.
Figure-6
MK-3200 Series Typical Mounting
Accessories Required for Mounting Per Figure 7
2 — AM-113 crank arm.
2 — AM-122-0-0-2 or AM-132-0-0-2 ball joint.
1 — AM-125 link rod 5/16-inch x 20 inches.
To mount proceed as follows. Refer to Figure 7.
1. Locate actuator on a surface perpendicular to the damper shaft, with the actuator rotary shaft approximately in line with the damper shaft.
2. Hold actuator up to duct and mark mounting holes.
3. With drill or punch, pierce holes marked in Step 2.
4. Mount actuator to duct.
5. Attach crank arm to actuator shaft at approximately 45
° angle.
6. Attach ball joint to crank at approximately 2-1/2 inches from center of shaft hole.
7. Attach crank arm to damper shaft an approximately 45
° angle, from vertical, toward actuator with damper in the normal actuator retracted position.
8. Attach ball joint to crank arm at approximately 2-1/2 inches from center of shaft.
9. Connect actuator ball joint to crank arm ball joint with
5-1/6-inch diameter rod. Cut off excess rod.
10. Refer to Checkout.
Accessories Required for Mounting Per Figure 8
1 — AM-125 link rod 5/16-inch x 20 inches.
1 — Connector as required for connection to driven device.
To mount proceed as follows. Refer to Figures 6 and 8.
1. Drill holes in mounting surface as shown in Figure 6.
2. Mount actuator.
3. Connect actuator.
4. Refer to Checkout.
Figure-7 MK-3200 Series Typical Mounting.
4 © Copyright 2010 Schneider Electric All Rights Reserved.
F-12586-11
Figure-8 MK-3300 Typical Mounting.
MK-3800 Series Typical Mounting
Accessories Required for Mounting of Actuator Per
Figure 9 through 11
1— AM-532 bolt-on frame bracket kit.
Note: Bracket kit includes the frame bracket, leaf connector, and necessary screws or bolts and nuts.
To install the actuator proceed as follows:
1. Prepare the damper by drilling necessary holes, etc. See
Figures 11 and 15 for bolt-on bracket.
2. Attach bracket and leaf connector to damper.
3. Attach actuator mounting plate to damper bracket.
4. Install pivot stud to actuator mounting plate.
5. Install actuator to pivot stud and connect clevis to blade connector.
Note: Adjust clevis as needed to align clevis and leaf connector.
Figure-10 MK-3800 Series Typical Mounting,
Normally Closed.
Preparing Damper for Frame Mounting of Actuator
Refer to Figures 11 and 15 for required holes, etc. for AM-532.
Figure-9 MK-3800 Series Typical Mounting, Normally Open.
Figure-11 Typical Bolt-On Bracket Mounting.
Accessories Required for Mounting of Actuator Per
Figure 12
1 — AM-530 crank arm.
To install proceed as follows:
1. Attach mounting plate to duct or wall with damper shaft protruding through locator hole in mounting plate. If this is not possible, additional shaft extensions may be used to allow locating the actuator farther from the damper shaft.
Each extension provides 4 inches of extension to the actuator shaft and may be used in multiples.
2. Install the pivot stud to the mounting plate.
3. Install actuator on pivot stud.
4. Install crank arm on damper shaft at approximately 45
° angle from vertical toward actuator.
F-12586-11
© Copyright 2010 Schneider Electric All Rights Reserved.
5
Note: Figure 12 shows position for normally closed.
5. Manually position damper to full retracted actuator position and tighten crank arm in position described in
Step 4.
6. Connect clevis to crank arm in hole closest to damper shaft. If necessary adjust clevis and/or extensions.
7. Refer to Checkout.
Figure-12 MK-3800 Typical External Pivot Mounted.
Figure-13 Mk-3800 Series Mounting Plate.
6
Figure-14 MK-3800 Series Clevis.
Figure-15 AM-532 Bolt-On Frame Bracket.
© Copyright 2010 Schneider Electric All Rights Reserved.
F-12586-11
CHECKOUT
After installation, the actuator should be checked to insure proper damper operation. To check the actuator and linkage, proceed as follows:
1. Check the linkage with the actuator in the retracted position for proper return force. The actuator should be linked so that on a normally closed application, the damper is closed with no more than 1/16-inch compression of the spring. (The actuator shaft would return an additional
1/16-inch if the linkage were disconnected.) For a normally open application, the actuator should be linked with the actuator fully retracted.
2. Apply air pressure to the actuator or pilot port of a positioner and check the linkage as follows. On a normally closed application, the damper should be just full open when the actuator piston reaches the stops in the actuator. On a normally open application, the damper should reach the closed position with no more than
1/16-inch stroke remaining to reach the actuator stops.
3. The above can be obtained through adjustment of the ball joint in the crank arms or by adjustment of the actuator stops. The amount of thread engagement of the actuator ball joint or extension shaft may also be used to assist in proper linking.
Connection of Air Line: On pivot mounting arrangements,
Figures 9, 10 and 12, control air lines MUST be terminated at the actuator with at least 6 inches of flexible tubing to allow for pivoting of the actuator. On mounting arrangements, Figures
5, 7 and 8, control air lines may be connected directly with either copper or plastic tubing, as required by application.
Caution: On MK2-31X1 Series, metal connectors and tubing must be used.
Adjustable Starting Pressure: Actuators are available with adjustable starting pressure. To adjust the starting pressure, turn adjusting nut supporting the spring clockwise to increase and counterclockwise to decrease the starting pressure. Each rotation of the adjusting nut changes the starting pressure .04 psi (.28 kPa).
Adjustable Stroke Length: Stroke length is determined by the two stops located on either side of the actuator. Stops are set for 3-1/2-inch stroke. mark this point and measure toward the diaphragm end of the actuator to reduce the stroke or away from the diaphragm end to increase the stroke.
Maximum stroke length is 4 inches. By increasing the stroke length, the force available to resist an opposing force is decreased while decreasing the stroke length increases this force.
Diaphragm Replacement: If the actuator diaphragm should leak, it may easily be replaced by removing the four screws holding the top power housing. Make sure that shaft swivel joint is in place on the end of the shaft. Remove the screws and old diaphragm. Roll the new diaphragm inside out and install over the piston making sure the circular bead is facing up. Put the top power housing back in place making sure the bead on the diaphragm is in the housing groove and the screw holes are lined up. Tighten housing screws.
UNITS WITH FACTORY MOUNTED
POSITIVE POSITIONERS
Figure-16 Typical Factory Mounted Positioner.
For Actuators with Positioners:
Note: If actuator is frame pivot mounted, the actuator must be mounted to the left-hand frame. If actuator is mounted external, Figure 12 must be on right-hand side of duct.
Install fittings required in Ports 2 and 3.
ADJUSTMENTS
Refer to Figure 16.
Range Adjustment: Adjustable 2 to 10 psig (14 to 69 kPa).
Factory set at 5 psig (34 kPa). Range is the pressure change required to produce full actuator stroke.
If adjustment is required (see Figure 16), with a small screwdriver loosen screw on range slider approximately 1/2 turn.
Move the graduated range slider until desired pressure mark lines up with center of screw and tighten screw.
Start Point: Adjustable 2 to 10 psig (14 to 69 kPa). Start point is the pressure at which the actuator just begins to extend.
See Figure 16.
Connect main air supply to Port 3 and a variable air supply to
Port 2.
1. Adjust variable air supply on Port 2 to desired start point pressure.
2. Adjust the start point screw with small screwdriver until actuator just starts to extend.
3. Gradually raise pressure on Port 2 until actuator is fully extended, and readjust range slider to obtain desired range if further adjustment is necessary.
4. Remove variable air supply from Port 2 and connect to controller output.
F-12586-11
© Copyright 2010 Schneider Electric All Rights Reserved.
7
Note: If slave damper actuators are to be controlled, tee into the tubing from Port 1 to the actuators. All dampers must be mechanically interconnected.
Figure-17 Typical Piping Diagram with Factory Mounted Positive
Positioner.
On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual 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
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.
F-12586-11
Schneider Electric
1354 Clifford Avenue
P.O. Box 2940
Loves Park, IL 61132-2940 www.schneider-electric.com/buildings
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Table of contents
- 1 Housing
- 1 Diaphragm,
- 1 Shipping
- 1 Operating
- 1 MK2-31X1 only
- 1 Shipping
- 1 Operating
- 4 Accessories Required for Mounting Per Figure 5
- 4 1. Measure a minimum of 8 inches from damper shaft in the direction of actuator location.
- 4 2. Hold actuator up to duct with actuator shaft approximately 1-1/2 inches above (N.C.) or below (N.O.) damper shaft and mark mounting holes.
- 4 3. With drill or punch, pierce holes marked in Step 2.
- 4 4. Mount actuator to duct.
- 4 5. Attach ball joint to crank arm at approximately 2-1/2 inches from center of shaft hole.
- 4 6. Attach crank arm to damper shaft at approximately 45° angle, from vertical, toward actuator with damper in the normal actuator retracted position.
- 4 7. Connect actuator ball joint to crank arm ball joint with 5/16-inch diameter rod. Cut off excess rod.
- 4 8. Refer to Checkout.
- 4 Figure-5 MK-3100 Series Typical Mounting.
- 4 Accessories Required for Mounting Per Figure 8
- 4 1. Drill holes in mounting surface as shown in Figure 6.
- 4 2. Mount actuator.
- 4 3. Connect actuator.
- 4 4. Refer to Checkout.
- 4 Figure-6
- 4 1. Locate actuator on a surface perpendicular to the damper shaft, with the actuator rotary shaft approximately in line with the damper shaft.
- 4 2. Hold actuator up to duct and mark mounting holes.
- 4 3. With drill or punch, pierce holes marked in Step 2.
- 4 4. Mount actuator to duct.
- 4 5. Attach crank arm to actuator shaft at approximately 45° angle.
- 4 6. Attach ball joint to crank at approximately 2-1/2 inches from center of shaft hole.
- 4 7. Attach crank arm to damper shaft an approximately 45° angle, from vertical, toward actuator with damper in the normal actuator retracted position.
- 4 8. Attach ball joint to crank arm at approximately 2-1/2 inches from center of shaft.
- 4 9. Connect actuator ball joint to crank arm ball joint with 5-1/6-inch diameter rod. Cut off excess rod.
- 4 10. Refer to Checkout.
- 4 Figure-7 MK-3200 Series Typical Mounting.
- 5 Figure-8 MK-3300 Typical Mounting.
- 5 Accessories Required for Mounting of Actuator Per Figure 9 through 11
- 5 1. Prepare the damper by drilling necessary holes, etc. See Figures 11 and 15 for bolt-on bracket.
- 5 2. Attach bracket and leaf connector to damper.
- 5 3. Attach actuator mounting plate to damper bracket.
- 5 4. Install pivot stud to actuator mounting plate.
- 5 5. Install actuator to pivot stud and connect clevis to blade connector.
- 5 Figure-9 MK-3800 Series Typical Mounting, Normally Open.
- 5 Figure-10 MK-3800 Series Typical Mounting, Normally Closed.
- 5 Preparing Damper for Frame Mounting of Actuator
- 5 Figure-11 Typical Bolt-On Bracket Mounting.
- 5 Accessories Required for Mounting of Actuator Per Figure 12
- 5 1. Attach mounting plate to duct or wall with damper shaft protruding through locator hole in mounting plate. If this is not pos...
- 5 2. Install the pivot stud to the mounting plate.
- 5 3. Install actuator on pivot stud.
- 5 4. Install crank arm on damper shaft at approximately 45° angle from vertical toward actuator.
- 6 5. Manually position damper to full retracted actuator position and tighten crank arm in position described in Step 4.
- 6 6. Connect clevis to crank arm in hole closest to damper shaft. If necessary adjust clevis and/or extensions.
- 6 7. Refer to Checkout.
- 6 Figure-12 MK-3800 Typical External Pivot Mounted.
- 7 1. Check the linkage with the actuator in the retracted position for proper return force. The actuator should be linked so that ...
- 7 2. Apply air pressure to the actuator or pilot port of a positioner and check the linkage as follows. On a normally closed appli...
- 7 3. The above can be obtained through adjustment of the ball joint in the crank arms or by adjustment of the actuator stops. The amount of thread engagement of the actuator ball joint or extension shaft may also be used to assist in proper linking.
- 7 Figure-16 Typical Factory Mounted Positioner.
- 7 For Actuators with Positioners:
- 7 1. Adjust variable air supply on Port 2 to desired start point pressure.
- 7 2. Adjust the start point screw with small screwdriver until actuator just starts to extend.
- 7 3. Gradually raise pressure on Port 2 until actuator is fully extended, and readjust range slider to obtain desired range if further adjustment is necessary.
- 7 4. Remove variable air supply from Port 2 and connect to controller output.
- 8 Figure-17 Typical Piping Diagram with Factory Mounted Positive Positioner.
- 1 MK-3000 Series, MK2-3000 Series, MK4-3000 Series