NF24A-MOD • en-us • 2022-03-15 • Subject to change1 / 7 Nominal voltageAC/DC 24 V Nominal voltage frequency50/60 Hz Nominal voltage rangeAC 19.2...28.8 V / DC 21.6...28.8 V Power consumption in operation7 W Power consumption in rest position3.5 W Power consumption for wire sizing9.5 VA Connection supply / controlcable 3 ft. [1 m], 6 x 0.75 mm² Communicative controlBACnet MS/TP Modbus RTU (default setting) MP-Bus Number of nodesBACnet / Modbus see interface description MP-Bus max. 8 Torque motor90 in-lb [10 Nm] Torque Fail-Safe10 Nm Operating range Y2...10 V Operating range Y variable0.5...10 V Position feedback U2...10 V Position feedback U noteMax. 1 mA Position feedback U variableStart point 0.5...8 V End point 2...10 V Position accuracy±5% Direction of motion motorselectable with switch L/R Direction of motion fail-safeselectable by mounting L/R Manual overrideby means of hand crank and locking switch Angle of rotationMax. 95° Angle of rotation noteadjustable starting at 33% in 2.5% steps (with mechanical end stop) Running Time (Motor)150 s / 90° Running time motor variable40...150 s Running time fail-safe<20 s @ -4...122°F [-20...50°C], <60 s @ -22°F [-30°C] Adaptation Setting Rangemanual Adaptation Setting Range VariableNo action Adaptation when switched on Adaptation after using the hand crank Override control, controllable via bus communication MAX (maximum position) = 100% MIN (minimum position) = 0% ZS (intermediate position) = 50% Override control variableMAX = (MIN + 32%)...100% MIN = 0%...(MAX – 32%) ZS = MIN...MAXNF24A-MOD • en-us • 2022-03-15 • Subject to change2 / 7 • • • • • • • Noise level, motor40 dB(A) Mechanical interfaceUniversal shaft clamp 10...25.4 mm Position indicationMechanical Service lifeMin. 60'000 fail-safe positions Protection class IEC/ENIII, Safety Extra-Low Voltage (SELV) Power source ULClass 2 Supply Degree of protection IEC/ENIP54 Degree of protection NEMA/ULNEMA 2 EnclosureUL Enclosure Type 2 EMCCE according to 2014/30/EU Certification IEC/ENIEC/EN 60730-1 and IEC/EN 60730-2-14 Certification ULcULus according to UL60730-1A, UL60730-2-14 and CAN/CSA E60730-1 The UL marking on the actuator depends on the production site, the device is UL-compliant in any case Mode of operationType 1.AA Rated impulse voltage supply / control0.8 kV Pollution degree3 Ambient temperature-22...122°F [-30...50°C] Storage temperature-40...176°F [-40...80°C] Ambient humidityMax. 95% RH, non-condensing Servicingmaintenance-free Weight4.6 lb [2.1 kg] This device has been designed for use in stationary heating, ventilation and air-conditioning systems and must not be used outside the specified field of application, especially in aircraft or in any other airborne means of transport. Outdoor application: only possible in case that no (sea) water, snow, ice, insolation or aggressive gases interfere directly with the actuator and that is ensured that the ambient conditions remain at any time within the thresholds according to the data sheet. Only authorized specialists may carry out installation. All applicable legal or institutional installation regulations must be complied during installation. The 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. Cables must not be removed from the device. To calculate the torque required, the specifications supplied by the damper manufacturers concerning the cross-section, the design, the installation situation and the ventilation conditions must be observed. The device contains electrical and electronic components and must not be disposed of as household refuse. All locally valid regulations and requirements must be observed. The actuator is fitted with an integrated interface for BACnet MS/TP, Modbus RTU and MP-Bus. It receives the digital positioning signal from the control system and returns the current status. Connection option for a sensor (passive, active or with switching contact). In this way, the analog sensor signal can be easily digitized and transferred to the bus systems : BACnet, Modbus or MP-Bus.NF24A-MOD • en-us • 2022-03-15 • Subject to change3 / 7 The factory settings cover the most common applications. Single parameters can be modified with the Belimo Service Tools MFT-P or ZTH EU. The communication parameters of the bus systems (address, baud rate etc.) are set with the ZTH EU. Pressing the "Address" button on the actuator while connecting the supply voltage, resets the communication parameters to the factory setting. Quick addressing: The BACnet and Modbus address can alternatively be set using the buttons on the actuator and selecting 1...16. The value selected is added to the «Basic address» parameter and results in the effective BACnet and Modbus address. With conventional control by means of an analog positioning signal, BACnet or Modbus can be used for the communicative position feedback Simple direct mounting on the damper shaft with a universal shaft clamp, supplied with an anti- rotation device to prevent the actuator from revolving. By using the hand crank the damper can be actuated manually and engaged with the locking switch at any position. Unlocking is carried out manually or automatically by applying the operating voltage. Adjustable angle of rotation with mechanical end stops. The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached. The first time the supply voltage is switched on, i.e. at the time of commissioning, the actuator carries out a synchronization. The synchronization is in the home position (0%). The actuator then moves into the position defined by the positioning signal. An adaptation can be triggered manually by pressing the "Adaptation" button or with the PC- Tool. Both mechanical end stops are detected during the adaptation (entire setting range). Automatic synchronization after actuating the hand crank is programmed. The synchronization is in the home position (0%). The actuator then moves into the position defined by the positioning signal. A range of settings can be adapted using the PC-Tool (see MFT-P documentation) Auxiliary switch 2 x SPDTS2A-F Feedback potentiometer 200 ΩP200A-F Feedback potentiometer 1 kΩP1000A-F Shaft extension 240 mm Ø20 mm for damper shaft Ø 8...22.7 mmAV8-25 End stop indicatorIND-AFB Shaft clamp reversible, for central mounting, for damper shafts Ø12.7 / 19.0 / 25.4 mm K7-2 Ball joint suitable for damper crank arm KH8 / KH10, Multipack 10 pcs.KG10A Ball joint suitable for damper crank arm KH8, Multipack 10 pcs.KG8 Damper crank arm Slot width 8.2 mm, clamping range Ø10...18 mmKH8 Actuator arm, for 3/4" shafts, clamping range Ø10...22 mm, Slot width 8.2 mm KH-AFB Form fit insert 10x10 mm, Multipack 20 pcs.ZF10-NSA-F Form fit insert 12x12 mm, Multipack 20 pcs.ZF12-NSA-F Form fit insert 16x16 mm, Multipack 20 pcs.ZF16-NSA-F Mounting kit for linkage operation for flat and side installationZG-AFB Base plate extensionZ-SF Anti-rotation mechanism 230 mm, Multipack 20 pcs.Z-ARS230L Hand crank 63 mmZKN2-BNF24A-MOD • en-us • 2022-03-15 • Subject to change4 / 7 Service Tool, with ZIP-USB function, for programmable and communicative Belimo actuators, VAV controller and HVAC performance devices ZTH EU Belimo PC-Tool, Software for adjustments and diagnosticsMFT-P Adapter for Service-Tool ZTHMFT-C Connection cable 16 ft [5 m], A: RJ11 6/4 ZTH EU, B: 6-pin for connection to service socket ZK1-GEN Connection cable 16 ft [5 m], A: RJ11 6/4 ZTH EU, B: free wire end for connection to MP/PP terminal ZK2-GEN BACnet MS/TP / Modbus RTU 1= black 2 = red 3 = white 5 = orange 6 = pink 7 = grey BACnet / Modbus signal assignment: C1 = D– = A C2 = D+ = B Connection with passive sensor, e.g. Pt1000, Ni1000, NTC 1) depending on type 2) Resolution 1 Ohm Compensation of the measured value is recommended Connection with active sensor, e.g. 0...10 V @ 0...50°C Possible voltage range: 0...32 V (resolution 30 mV)NF24A-MOD • en-us • 2022-03-15 • Subject to change5 / 7 Connection with switching contact, e.g. Δp monitor Requirements for switching contact: The switching contact must be able to accurately switch a current of 16 mA @ 24 V. Modbus RTU / BACnet MS/TP with analogue setpoint (hybrid mode) Operation on the MP-BusNF24A-MOD • en-us • 2022-03-15 • Subject to change6 / 7 Off:No power supply or malfunction On:In operation Flashing:In address mode: Pulses according to set address (1...16) When starting: Reset to factory setting (Communication) Press button: In standard mode: Triggers angle of rotation adaptation In address mode: Confirmation of set address (1...16) Off:Standard mode On:Adaptation or synchronisation process active or actuator in address mode (LED display green flashing) Flickering:BACnet / Modbus communication active Press button: In operation (>3 s): Switch address mode on and off In address mode: Address setting by pressing several times When starting (>5 s): Reset to factory setting (Communication) For connecting parametrisation and service tools The manual override, locking switch and direction of rotation switch elements are available on both sides 1. Press the "Address" button until the green "Power" LED is no longer illuminated. LED flashes in accordance with the previously set address. 2. Set the address by pressing the "Address" button the corresponding number of times (1...16). 3. The green LED flashes in accordance with the address that has been entered (...16). If the address is not correct, then this can be reset in accordance with Step 2. 4. Confirm the address setting by pressing the green "Adaptation" button. If no confirmation occurs for 60 seconds, then the address procedure is ended. Any address change that has already been started will be discarded. The resulting BACnet MS/TP and Modbus RTU address is made up of the set basic address plus the short address (e.g. 100+7=107). The actuator can be configured by ZTH EU via the service socket. For an extended configuration the PC tool can be connected. 1 2 3NF24A-MOD • en-us • 2022-03-15 • Subject to change7 / 7 Min. 85 Min. 15 • Tool connections • BACnet Interface description • Modbus Interface description • Overview MP Cooperation Partners • MP Glossary • Introduction to MP-Bus Technology • For digital control of actuators in VAV applications patent EP 3163399 must be considered.Next >