NRF24A-MP Spring Return Actuator, 10 Nm, AC/DC 24 V, 90 s - Belimo | ideal for ball valves

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The Belimo NRF24A-MP is an Actuator used in HVAC applications and air ventilation systems.

The Torque force applied by the NRF24A-MP is 10 Nm.

The power supply requested for this Rotary Actuator is 24Vac/Vdc.

Find at IACS the ideal Belimo Actuator compatible with your system at the best price.

If you are unsure about size or installation, refer to the Belimo custom datasheet above or message iacs to receive special instructions and a custom quote.

NRF24A-MP Spring Return Actuator, 10 Nm, AC/DC 24 V, 90 s

• 10 Nm, 90 s Adjustable, 90°
• AC/DC 24 V, Modulating, MP-Bus
• IP 54, Manual Override with Integrated Position Stop
• Running Time Spring <20 s
• Operating Range DC 2...10 V, 0...32 V Adjustable
• Position Feedback DC 2...10 V, 0...10 V Adjustable
• Connection Cable PVC 1 m
• Emergency Control Function Closed
• With Mounting Kit for RKH Mounted

Mode of operation: Conventional operation: The actuator is connected with a standard modulating signal DC 0...10 V. The actuator moves the valve to the operating position at the same time as tensioning the return spring. The valve is turned back to the emergency position by spring force when the supply voltage is interrupted. Operation on the MP-Bus: The actuator receives its digital positioning signal from the higher level controller via the MP-Bus and travels to the position defined. Connection U serves as communication interface and does not supply an analogue measuring voltage.

Converter for sensors: Connection option for a sensor (passive or active sensor or switching contact). The MP actuator serves as an analogue/digital converter for the transmission of the sensor signal via MP-Bus to the higher level system.

Parameterisable actuators: The factory settings cover the most common applications. Input and output signals and other parameters can be altered with the PC-Tool MFT-P or with the Service tool ZTH EU.

Direct mounting: Simple direct mounting on the ball valve with only one screw. The mounting orientation in relation to the ball valve can be selected in 90° steps.

Manual override: Manual actuation of the valve with manual elevator crank, engagement with the locking switch at any position. Unlocking is manual or automatic by applying the operating voltage.

High functional reliability: The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached.

Adjustable angle of rotation: Adjustable angle of rotation with mechanical end stop.

Home position: The first time the supply voltage is switched on, i.e. at the time of commissioning, the actuator carries out an adaption, which is when the operating range and position feedback adjust themselves to the mechanical setting range. The actuator then moves into the position defined by the positioning signal. Factory setting: Y2 (counter-clockwise rotation).

Adaption and synchronisation: An adaption can be triggered manually by pressing the „Adaption“ button or with the PC-Tool. Both mechanical end stops are detected during the adaption (entire setting range). Automatic synchronisation after actuating the hand crank is programmed. The synchronisation is in the home position (0%). A range of settings can be adapted using the PC-Tool (see MFT-P documentation)

Electrical data:

• Nominal voltage AC/DC 24 V
• Nominal voltage frequency 50/60 Hz
• Nominal voltage range AC 19.2...28.8 V / DC 21.6...28.8 V
• Power consumption in operation 7 W
• Power consumption in rest position 3.5 W
• Power consumption for wire sizing 9.5 VA
• Connection supply / control Cable 1 m, 4 x 0.75 mm²
• Parallel operation Yes (note the performance data)

Functional data:

• Torque motor Min. 10 Nm
• Torque spring return Min. 10 Nm
• Positioning signal Y DC 0...10 V
• Positioning signal Y note Input impedance 100 kΩ
• Control signal Y variable Open-close 3-point (AC only) Modulating (DC 0...32 V)
• Operating range Y DC 2...10 V
• Operating range Y variable Start point DC 0.5...30 V End point DC 2.5...32 V
• Position feedback U DC 2...10 V
• Position feedback U note Max. 0.5 mA
• Position feedback U variable Start point DC 0.5...8 V End point DC 2.5...10 V
• Position accuracy ±5%
• Direction of rotation motor Y=0 (0V = A - AB = 0%)
• Direction of rotation spring-return Deenergised NC, valve closed (A - AB = 0%)
• Manual override By means of hand crank and locking switch
• Angle of rotation 90°
• Running time motor 90 s / 90°
• Motor running time variable 40...220 s
• Running time emergency control position <20 s / 90°
• Adaption setting range manual (automatic on first power-up)
• Adaption setting range variable No action Adaption when switched on Adaption after using the hand crank
• Override control MAX (maximum position) = 100% MIN (minimum position) = 0% ZS (intermediate position, AC only) = 50%
• Override control variable MAX = (MIN + 33%)...100% MIN = 0%...(MAX – 33%) ZS = MIN...MAX
• Sound power level motor 45 dB(A)
• Position indication Mechanical
• Service life Min. 60,000 emergency positions

Safety:

• Protection class IEC/EN III Safety extra-low voltage
• Protection class UL UL Class 2 Supply
• Degree of protection IEC/EN IP54
• Degree of protection NEMA/UL NEMA 2, UL Enclosure Type 2
• EMC CE according to 2004/108/EC
• Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14
• Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02
• Mode of operation Type 1.AA
• Rated impulse voltage supply / control 0.8 kV
• Control pollution degree 3
• Ambient temperature -30...50°C
• Non-operating temperature -40...80°C
• Ambient humidity 95% r.h., non-condensing
• Maintenance Maintenance-free

Weight: 2.2 kg