CN0B-0341CH33 R0407
1
N20, N34 SERIES
NON-SPRING RETURN DAMPER ACTUATOR
20/34 Nm (177/300 lb-in) FOR MODULATING CONTROL
PRODUCT DATA
GENERAL
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
4.6m
2
/ 50 sq.ft. (20 Nm / 177 lb-in) or 7.8m
2
/ 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 (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;
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
CN7220 6 VA / 6 W
CN7234 8 VA / 6 W
Ambient limits
Ambient operating limits -20...+60
℃
(-5...+140 °F)
Ambient storage limits
-40...+80
℃
(-40...+175 °F)
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
1.5 million
Mounting
Round damper shaft
10…27 mm (3/8...1-1/16”)
Square damper shaft 10...18 mm (3/8...11/16”)
45° steps
Shaft length
min. 22 mm (7/8”)
Control signal
0(2)...10 Vdc
0(4)...20 mA
Input impedance
100
k
Ω
[0...10 V]
500
Ω
m [0...20 mA]
Feedback signal
Limits ± 1 mA at 0...10 V
Torque rating
CN7220 20 Nm (177 lb-in)
CN7234 34 Nm (300 lb-in)
Runtime
95 sec (60 Hz) / 110 sec (50 Hz)
Rotation stroke
95°± 3°
Dimensions
see “Dimensions” on page 6
Weight
1.35 kg (3 lbs.)
Noise rating
40 dB(A) max. at 1 m
