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PRODUCT DATA
63-2587-1
N20, N34 Series MN7220, MN7234
NON-SPRING RETURN DAMPER ACTUATOR
20/34 Nm (175/300 lb-in) FOR MODULATING CONTROL
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
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
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
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 95° ± 3°
Dimensions see “Dimensions” on page 8
Weight 3 lbs. (1.35 kg)
Noise rating 40 dB(A) max. at 1 m