Honeywell Mn7220 Users Manual 63 2587 1 N20, N34 Series MN7220, MN7234 Non Spring Return Damper Actuator
N34 Series to the manual 6ad02704-2a57-4cfb-ad1b-393d446c41dc
2015-01-23
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N20, N34 Series MN7220, MN7234 NON-SPRING RETURN DAMPER ACTUATOR 20/34 Nm (175/300 lb-in) FOR MODULATING CONTROL PRODUCT DATA SPECIFICATIONS 24 Vac ±20%, 50/60 Hz; 24 Vdc -10...+20% Nominal voltage 24 Vac, 50/60 Hz; 24 Vdc All values stated hereinafter apply to operation under nominal voltage conditions. Power consumption MN7220 6 VA / 6 W MN7234 8 VA / 6 W Ambient limits Ambient operating limits -5...+140 °F (-20...+60 °C) Ambient storage limits -40...+175 °F (-40...+80 °C) Relative humidity 5...95%, non-condensing Safety Protection standard IP54 (non-USA models) NEMA2 (USA models) Protection class II as per EN 60730-1 Overvoltage category II Lifetime Full strokes 60000 Repositions 1.5 million Mounting Round damper shaft 3/8...1-1/16” (10...27 mm) Square damper shaft 3/8...11/16” (10...18 mm); 45° steps Shaft length min. 7/8” (22 mm) Control signal 0(2)...10 Vdc 0(4)...20 mA Supply voltage GENERAL These direct-coupled damper actuators provide modulating control for: • • • • • rotary valves, air handling units, ventilation flaps, louvers, and reliable control for air damper applications with up to 50 sq.ft. (20 Nm / 175 lb-in) or 85 sq. ft. (34 Nm / 300 lb-in) (seal-less damper blades; air friction-dependent). FEATURES • New self-centering shaft adapter • Access cover to facilitate connectivity • Declutch for manual adjustment • Mechanical end limits (MN7220 only) • Field-installable auxiliary switches • Rotation direction selectable by switch • Mountable in any orientation (no IP54 if upside down) • Mechanical position indicator Input impedance 100 kΩ [0...10 V] 500 Ωm [0...20 mA] Feedback signal Limits ± 1 mA at 0...10 V Auxiliary switch (when included) Rating 5 A (resistive) / 3 A (inductive) Triggering points 5° / 85° Torque rating MN7220 175 lb-in (20 Nm) MN7234 300 lb-in (34 Nm) Runtime 95 sec (60 Hz) / 110 sec (50 Hz) Rotation stroke Dimensions Weight Noise rating 95° ± 3° see “Dimensions” on page 8 3 lbs. (1.35 kg) 40 dB(A) max. at 1 m 63-2587-1 N20, N34 SERIES MN7220, MN7234 MODELS M – Electrical motor N – Fail Safe Function (Non-Spring Return) 61 – 24V Floating Control 72 – 24V Modulating Control 20 – 20 Nm (175 lb-in) 34 – 34 Nm (300 lb-in) A – Standard Model 1 – No Feedback 2 – Voltage Feedback Signal 0 – No Internal Auxiliary Switches 2 – Two Internal Auxiliary Switches XX – System Controlled Numbers M N 72 20 A 2 0 XX Fig. 1. Product Identification System OPERATION/FUNCTIONS Legend for Fig. 2. Setting units and control elements: 1. Self-centering shaft adapter 2. Retainer clip 3. Rotational angle scales (0...90° / 90...0°) 4. Mechanical end limits (20 Nm [175 lb-in] models, only) 5. Declutch button 6. Anti-rotation bracket 7. Rotation direction switch 8. Access cover 9. Internal auxiliary switch wire 10. Power and control wire Contents of Package The delivery package includes the actuator itself, parts 1 through 10 (see Fig. 2; in the case of U.S. models – e.g. MN7220 – parts 1 through 8), the anti-rotation bracket screws, and the SM mounting plate and screws. Modulating Control The actuator is capable of being operated by several controllers providing Vdc or mA output. Fig. 2. Setting units and control elements ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A. 63-2587—1 2 N20, N34 SERIES MN7220, MN7234 Rotary Movement The control signal and the corresponding rotation direction (clockwise or counterclockwise) can be selected using the rotation direction switch (see part Rotation direction switch in Fig. 2), thus eliminating the need to re-wire. To ensure tight closing of the dampers, the actuator has a total rotation stroke of 95°. As soon as operating power is applied, the actuator may start to run. When power is removed, the actuator remains in position. For actuator-controller wiring instructions, see section “Wiring” on page 5. voltage/current control signal dip switch (OFF) autoadapt dip switch for normal operation (ON) Rotation Direction Switch Fig. 4. Dip switches (view with PCB at bottom) Autoadapt Dip Switch for Normal Operation In its default shipping position, the autoadapt dip switch for normal operation is set to ON as shown in Fig. 4. Dip switches (view with PCB at bottom)4. If it is set to OFF, no autoadapting is performed, and the control signal map remains constant. Fig. 3. Rotation Direction Switch The autoadapt functionality does not have to be triggered. Rather, the SmartAct actuator does this automatically when the min. and max. control signals are provided (see Fig. 5); the feedback signal is likewise autoadapted. Table 1. Feedback/control signal values Rotation direction switch position Feedback/control signal when actuator is totally totally Y=2 /2...10V U=2V U = 10 V Y=0 /0...10V* U=0V U = 10 V Y=0 /10...0V U = 10 V U=0V Y=2 /10...2V U = 10 V U=2V * Default shipping position. Feedback Signal and Manual Adjustment If, while the actuator is not rotating, the user declutches it and manually repositions the shaft adapter, the feedback signal will then follow the new position at which the shaft adapter has been left. Power Off/On Behavior Fig. 5. Actuator positioning curve In case the power to the actuator fails, after re-applying power, the actuator acknowledges its present position and follows the signal from the controller. This makes it unnecessary for the actuator to employ autoadaption in order to re-map the control signal settings. Dip Switches In order to make use of the autoadapt functionality, proceed as follows: 1. 2. 3. The actuators are equipped with two dip switches accessible after removing the access cover (see Fig. 4). 3 4. Set the autoadapt dip switch to the ON position. If necessary, limit the stroke to the desired range using the mechanical end limits. Drive the actuator to the left end limit (totally counterclockwise) by setting the control signal as specified in Table 1. Feedback/control signal values1. Drive the actuator to the right end limit (totally clockwise) by setting the control signal as specified in Table 1. Feedback/control signal values1. The stroke has now been limited to 0...100% of the control signal range. 63-2587—1 N20, N34 SERIES MN7220, MN7234 Voltage/Current Control Signal Selection Dip Switch In its default shipping position, the voltage/current control signal dip switch (see Fig. 4) is set to OFF (= voltage control). as shown in Fig. 4. Setting it to ON results in current control. The mechanical end limits must be securely fastened in place as shown in Fig. 8. Correct / incorrect tightening of end limits8. Specifically, it is important that they properly mesh with the rotational angle scales when the screws are tightened. Position Indication The hub adapter indicates the rotation angle position by means of the rotational angle scales (0...90° / 90...0°). 60 90 90 60 30 30 0 0 Fig. 8. Correct/incorrect tightening of end limits Internal Auxiliary Switches The internal auxiliary switches are set to change from “common” to “normally open” at angles of 5° and 85°, respectively, from the totally counterclockwise position. Fig. 6. Position indication Manual Adjustment actuator scale: clockwise IMPORTANT In order to prevent equipment damage, you must remove power before manual adjustment. -2.5° 0° After removing power, the gear train can be disengaged using the declutch button, permitting the actuator shaft to be manually rotated to any position. The feedback signal will then follow the new position. Limitation of Rotation Stroke 15° 75° 80° 85° 90° 92.5° CW internal auxiliary switch auxiliary switch scale 0° 5° 10° 15° 75° 80° 85° 90° 5° 0° -2.5° actuator scale: counterclockwise 92.5° 90° Two mechanical end limits (adjustable in 3° increments) are provided (20 Nm [175 lb-in] models, only) to limit the angle of rotation as desired (see Fig. 7). 5° 10° CCW internal auxiliary switch 85° 80° 75° 15° 10° Fig. 9. Internal auxiliary switches Override If terminal 3 of the terminal strip (see section “Wiring Diagrams” on page 6) is unplugged, the stroke will be 0%; reversing the rotation direction using the rotation direction switch will result in a max. stroke of 100%. If terminal 3 is jumped with terminal 1 (24 V), the stroke will be 50%. INSTALLATION These actuators are designed for single-point mounting. IMPORTANT In order to prevent equipment damage, you must remove power or set the rotation direction switch to the “Service/Off” position before manual operation. Fig. 7. Mechanical end limits Mounting Instructions All information and steps are included in the Installation Instructions supplied with the actuator. 63-2587—1 4 N20, N34 SERIES MN7220, MN7234 Mounting Position The actuators can be mounted in any desired orientation (no NEMA2 or IP54 if mounted upside down; see Fig. 10). Choose an orientation permitting easy access to the actuator's cables and controls. NEMA2 IP54 NEMA2 IP54 NEMA2 IP54 IMPORTANT Remove power before detaching the access cover. Once the access cover has been removed, please take care to avoid damaging any of the parts now accessible. NEMA2 IP54 Fig. 11. Access cover Depending upon the model, the access cover may have one or two terminal strips, including a layout with a description for each of the terminals. Fig. 10. Mounting for IP54/NEMA2 Mounting Bracket and Screws If the actuator is to be mounted directly on a damper shaft, use the mounting bracket and screws included in the delivery package. Self-Centering Shaft Adapter The self-centering shaft adapter can be used for shafts having various diameters (3/8...1-1/16” [10...27 mm]) and shapes (square or round). In the case of short shafts, the shaft adapter may be reversed and mounted on the duct side. Stroke Limitation with Mechanical End Limits The mechanical end limits (20 Nm [175 lb-in] models, only) enable the stroke to be limited from 0...90° in increments of 3°. Wiring Fig. 12. Actuator with access cover removed Access cover To facilitate wiring the actuator to the controller, the access cover can be detached from the actuator. 5 63-2587—1 N20, N34 SERIES MN7220, MN7234 Wiring Diagrams MN7220/MN7234 24 Vac 24 Vdc ~ 1 2 3Y 0(2)...10 Vdc 0(4)...20 mA 5U 0(2)...10 Vdc TERMINAL STRIP 1 ! 1~ 2 3Y 5U Connect via safety isolating transformer! MODULATING CONTROL MN7220 WITH SWITCHES S1 24 Vac 24 Vdc ~ TERMINAL STRIP 0(2)...10 Vdc 0(4)...20 mA 0(2)...10 Vdc 1 1~ 2 2 3Y 3Y 5U 5U S2 S3 S4 S5 S6 ! AUXILIARY Connect via isolating MODULATING S1 S2 S3 S4 S5 S6 AUXILIARY NOTE: Internal auxiliary switches S1 and S4 must be connected to the same power source. connecting cable terminal supply and signal lines CCW (left) 5° auxiliary switched (when included) CW (right) 85° 63-2587—1 name 1~ 24 Vac∼ / 24 Vdc+ 2⊥ 24 Vac⊥ / 24 Vdc- 3Y 0(2)...10 Vdc / 0(4)...20 mA control signal 5U 0(2)...10 V feedback signal S1 Common S2 normally closed S3 normally open S4 Common S5 normally closed S6 normally open 6 N20, N34 SERIES MN7220, MN7234 7 63-2587—1 N20, N34 SERIES MN7220, MN7234 DIMENSIONS 100 mm (3-15/16”) 95° shaft adapter (reverse) 48 mm (1-7/8”) shaft adapter 90 60 30 0 223 mm (8-25/32”) 20.6 mm (1-3/16”) 1000 mm (39”) 92 mm (3-5/8”) min. 60 mm (2-3/8”) 132 mm (5-3/16”) 230 mm [+/- 0.5 mm] (9-1/16” [+/-1/64”]) 20 mm (25/32”) anti-rotation bracket 7 mm (9/32”) 2 mm (5/64”) 13 mm (1/2”) 5 mm (+0.05, -0.10 mm) 25/128” (+0.002, -0.004”) Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2005 Honeywell International Inc. 63-2587—1 M.S. Rev. 10-05
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