Honeywell N20, CN7220A2007, CN7234A2008, N34 Product Data

N20, N34 SERIES
NON-SPRING RETURN DAMPER ACTUATOR 20/34 Nm (177/300 lb-in) FOR MODULATING CONTROL
These direct-coupled damper actuators provide modulating control for:
Air dampers
VAV units
Air handlers
Ventilation flaps
Louvers, and
Reliable control for air damper applications with up to
2
/ 50 sq.ft. (20 Nm / 177 lb-in) or 7.8m2 / 85 sq.
4.6m 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 (CN7220 only)
Field-installable auxiliary switches
Rotation direction selectable by switch
Mountable in any orientation (no IP54 if upside down)
Mechanical position indicator
SPECIFICATIONS
Supply voltage 24 Vac ±20%, 50/60 Hz;
Nominal voltage 24 Vac, 50/60 Hz; 24 Vdc
All values stated hereinafter apply to operation under nominal voltage conditions.
Power consumption
CN7220 6 VA / 6 W CN7234 8 VA / 6 W
Ambient limits
Ambient operating limits -20...+60 ℃ (-5...+140 °F) Ambient storage limits Relative humidity 5...95%, non-condensing
Safety Protection standard IP54 as per EN 60529 Protection class II as per EN 60730-1 Overvoltage category II
Lifetime
Full strokes 60000 Repositions
Mounting
Round damper shaft Square damper shaft 10...18 mm (3/8...11/16”)
Shaft length Control signal 0(2)...10 Vdc
Input impedance
Feedback signal Limits ± 1 mA at 0...10 V
Torque rating CN7220 20 Nm (177 lb-in) CN7234 34 Nm (300 lb-in)
Runtime Rotation stroke Dimensions see “Dimensions” on page 6 Weight 1.35 kg (3 lbs.) Noise rating 40 dB(A) max. at 1 m
PRODUCT DATA
24 Vdc -10...+20%
-40...+80 ℃ (-40...+175 °F)
1.5 million
10…27 mm (3/8...1-1/16”)
45° steps
min. 22 mm (7/8”)
0(4)...20 mA
100 kΩ [0...10 V]
500 Ωm [0...20 mA]
95 sec (60 Hz) / 110 sec (50 Hz)
95°± 3°
CN0B-0341CH33 R0407 1
N20, N34 SERIES CN7220, CN7234
MODELS
C – Direct Coupled Actuator
N – Fail Safe Function (Non-Spring Return)
61 – 24V Floating Control 72 – 24V Modulating Control 46 – 230V Floating Control
C N 72 20 A 2 0 XX
Model # Description
CN7220A2007 CN7234A2008
20Nm,24Vac/Vdc, Modulating control, Non-Spring return, Voltage Feedback Signal and without aux. Switch 34Nm,24Vac/Vdc, Modulating control, Non-Spring return, Voltage Feedback Signal and without aux. Switch
20 – 20 Nm (177 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
Fig. 1. Product Identification System
OPERATION/FUNCTIONS
Legend for Fig. 2:
1
60
90
90
60
30 0
30
0
2
3
4
5
6
8
7
Fig. 2. Setting units and control elements
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.
1. Self-centering shaft adapter
2. Retainer clip
3. Rotational angle scales (0...90° / 90...0°)
4. Mechanical end limits (20 Nm [177 lb-in] models, only)
5. Declutch button
6. Anti-rotation bracket
7. Rotation direction switch
8. Access cover
Contents of Package
The delivery package includes the actuator itself, parts 1 through 8 (see Fig.2), 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.
Rotary Movement
The control signal and the corresponding rotation direction (clockwise or counterclockwise) can be selected using the rotation direction switch (see part 7 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°.
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 your local Honeywell Automation and Control Products Sales Office or Honeywell Customer Care.
CN0B-0341CH33 R0407 2
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