Description

These direct-coupled damper actuators provide modulating control for: • air dampers, • VAV units, • air handling units, • ventilation flaps, • louvers, and • reliable control for air damper applications with up to 4.6 m2 / 50 sq.ft. (20 Nm / 177 lb-in) or 7.8 m2 / 85 sq. ft. (34 Nm / 300 lb-in) (seal-less dampers; air friction dependent). FEATURES • Self-centering shaft adapter • Access cover to facilitate connectivity • Service/off for safe & easy servicing • Rotation direction selectable by switch • Declutch for manual adjustment • Mechanical end limits • Field-installable auxiliary switches • Mountable in any orientation (no IP54 if upside down) • Mechanical position indicator • CE and UL certified Description Supply voltage 24 Vac/dc ±15%, 50/60 Hz; Nominal voltage 24 Vac/dc, 50/60 Hz; All values stated hereinafter apply to operation under nominal voltage conditions. Power consumption CN7220A2007 6 VA / 3 W CN7234A2008 6 VA / 3 W Ambient limits Ambient operating limits -20…+60 °C (-5…+140 °F) Ambient storage limits -40…+80 °C (-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 kΩ [0…10 V] 500 Ω [0…20 mA] Feedback signal Limits ± 1 mA at 0…10 V End switches (when included) Rating 5 A (resistive) / 3 A (inductive) Triggering points 5° / 85° Torque rating CN7220A2007 20 Nm (177 lb-in) CN7234A2008 34 Nm (300 lb-in) Runtime 95 sec (60 Hz) / 110 sec (50 Hz or DC supply) Rotation stroke 95° ± 3° Dimensions see “Dimensions” on page 8 Weight (without cables) 1.35 kg (3 lbs.) Noise rating 40 dB(A) max. at 1 m Certification CE & UL