echnical data sheet Damper actuator NM4A-SR-P Damper actuator for operating air control dampers in ventilation and air-conditioning systems for building services installations For air control dampers up to approx. m orque Nm Nominal voltage AC/DC 4 V Control: modulating DC... V, position feedback DC... V echnical data Electrical data Nominal voltage AC 4 V, 5/6 Hz DC 4 V Nominal voltage range AC/DC 9.... 8.8 V Power consumption In operation At rest For wire sizing W @ nominal torque.4 W 4 VA Connection erminals 4 mm (Cable Ø 4... mm, four-core) Functional data orque (nominal torque) Min. Nm @ nominal voltage Control Control signal Working range DC... V, typical input impedance kω DC... V Position feedback (Measuring voltage) DC... V, max. ma Position accuracy ±5% Direction of rotation Reversible with switch / Direction of rotation at = V At switch position resp. Manual override Gearing latch disengaged with pushbutton, detentable Angle of rotation Max. 95, limited on both sides by means of adjustable, mechanical end stops Running time 5 s / 9 Sound power level Max. 35 db (A) Position indication Mechanical, pluggable Safety Protection class III Safety extra-low voltage Degree of protection IP54 in any mounting position EMC CE according 89/336/EEC Mode of operation ype (to EN 673-) Rated impulse voltage.8 kv (to EN 673-) Control Pollution Degree 3 (to EN 673-) Ambient temperature range 3... 5 C Non-operating temperature 4... 8 C Ambient humidity range 95% r.h., non-condensating (EN 673-) Maintenance Maintenance-free Dimensions / Weight Dimensions See «Dimensions» on page Weight Approx. 8 g Safety notes he damper actuator is not allowed to be used outside the specified field of applica tion, especially in aircraft or any other form of air transport. Assembly must be carried out by trained personnel. Any legal regulations or regulations issued by authorities must be observed during assembly. he device may only be opened at the manufacturer s site. It does not contain any parts that can be replaced or repaired by the user. When calculating the required torque, the specifications supplied by the damper manufacturers (cross section, design, installation site), and the air flow conditions must be observed. he device contains electrical and electronic components and is not allowed to be disposed of as household refuse. All locally valid regulations and requirements must be observed. www.belimo.com
NM4A-SR-P Damper actuator AC/DC 4 V, Nm Product features Mode of operation Simple direct mounting Manual override he actuator is controlled by means of a standard control signal DC... V. It opens to the position dictated by this signal. he measuring voltage allows the damper position (... %) to be electrically indicated and serves as a follow-up control signal for other actuators. Simple direct mounting on the damper spindle with a universal spindle clamp, supplied with an anti-rotation strap to prevent the actuator from rotating. Manual operation is possible with the pushbutton (the gearing latch remains disengaged as long as the pushbutton is pressed or detented). Adjustable angle of rotation High functional reliability Adjustable angle of rotation with mechanical end stops. he actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached. Accessories Description Data sheet Electrical accessories Auxiliary switch S..A.. - S..A.. Feedback potentiometer P..A.. - P..A.. Range controller SBG4 - SBG4 Positioner SG..4 - SG..4 Digital position indication ZAD4 - ZAD4 Mechanical accessories Various accessories (clamps, shaft extensions etc.) - Z-NM..A.. Electrical installation Wiring diagram Notes Connection via safety isolating transformer. Other actuators can be connected in parallel. Please note the performance data. 3 5 DC V DC V Dimensions [mm] Dimensional drawings 5 7 6,5 mm 35 mm 4... mm 4 Damper spindle Length Clamp on top > 4 8... 6.7 > 8 < 6.7 Clamp on bottom * > 8... > 8 < * Option (Accessory K-NA) 8 5 99 www.belimo.com NM4A-SR-P en-gb 3-7-4 Subject to modification
NM..A.. 74-.E 4 8... 6.7 8 6.7 3 4 9 Nm mm mm 5 65 3 www.belimo.com M-NM..A.. v..3 /
NM..A.. N L N L 3 3 AC 4 V / DC 4 V DC 48... V (NM7A..) 3 3 S S S3 3 S S S3...% NM4A.. NM7A.. NM4A-S.. NM4AP5.. AC... 4 V N L L 3 N L L 3 S S S3 S S S3 S S S3 NM3A.. NM3A-S.....% AC 4 V / DC 4 V DC V DC V DC V MP 3 5 3 5 NM4A-SR.. NM4A-MF.. NM4A-MP.. DC 48... V (NM7A-SR..) SG..4 5 DC V DC V AC 4 V / DC 4 V (NM4A-V / VR..) 3 5 NM7A-SR.. AC... 4 V N L SG..4 5 DC V DC V VR.. 3 5 NM4A-V NM3ASR.. NM4A-V / VR.. / M-NM..A.. v..3 www.belimo.com
M..P / LM..P / NM..P / SM..P / GM..P 7336-.B 3 4 6 mm 35 mm Options 6...8 mm 4...6 mm ype 4335- ype 4335-8... mm ype 4335-3 5 6 max 4 Nm www.belimo.com