NV24A-MOD Globe Valve Actuator, AC/DC 24 V, 150 s - Belimo | ideal for globe valves

We provide Free Delivery and Next 1-2 Day Delivery for all Belimo Actuators that are in stock at iacs.

The Belimo NV24A-MODis a kind of Actuator used to operate valves in HVAC applications and systems.

The force applied by the Torque of the NV24A-MOD is 1000 N.

This Valve Actuator needs to be supported by a power supply of 24Vac/Vdc.

You may utilise this Belimo component with Globe Valves.

If you have questions concerning size or installation, refer to the Belimo custom datasheet above or email iacs for individualised support.

NV24A-MOD Globe Valve Actuator, AC/DC 24 V, 150 s

• 1000 N, 150 s, adjustable, 20 mm
• AC/DC 24 V, modulating, Modbus RTU
• IP 54, Manual override temporary, permanent
• Connection PVC cable 1m

Principle of operation: The actuator is fitted with an integrated interface for Modbus RTU, it receives the digital positioning signal from the Modbus-Master and returns the current status.

Converter for sensors: Connection option for a sensor (passive or active sensor or switching contact). In this way, the analogue sensor signal can be easily digitised and transferred to Modbus.

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. The Modbus communication parameters (address, baud rate etc.) are set with the ZTH EU. Pressing push-button „Service“ on the actuator while connecting the supply voltage resets the communication parameters to the factory setting. Quick addressing: The Modbus address can alternatively be set using push-buttons on the actuator from 1 to 16. The value selected is added to the «Basic address» parameter and results in the effective Modbus address. For example, with a basic address of 140, Modbus addresses between 141 and 156 can be parameterised using quick addressing.

Simple direct mounting: Simple direct mounting on the globe valve by means of form-fit hollow clamping jaws. The actuator can be rotated by 360° on the valve neck.

Manual override: Manual override with push-button possible (the gear is disengaged for as long as the button is pressed or remains locked). The stroke can be adjusted by using a hexagon socket screw key (4 mm), which is inserted into the top of the actuator. The stroke spindle extends when the key is rotated clockwise.

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

Combination valve/actuator: Refer to the valve documentation for suitable valves, their permitted medium temperatures and closing pressures.

Position indication: The stroke is indicated mechanically on the bracket with tabs. The stroke range adjusts itself automatically during operation.

Home position: Factory setting: Actuator spindle is retracted. When valve-actuator combinations are shipped, the direction of motion is set in accordance with the closing point of the valve. 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.

Direction of rotation switch: When actuated, the direction of stroke switch changes the running direction in normal operation.

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 pressing the gearbox disengagement button is configured. The synchronisation 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)

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 1.5 W
• Power consumption in rest position 0.5 W
• Power consumption for wire sizing 3 VA
• Connection supply / control Cable 1 m, 6 x 0.75 mm²

Data for Modbus:

• Protocol Modbus RTU (RS-485), not galvanically isolated
• Number of nodes Max. 32 (without repeater)
• Transmission formats 1-8-N-2, 1-8-N-1, 1-8-E-1, 1-8-O-1
• Baud rate 9600, 19,200, 38,400, 76,800, 115,200 Bd Default: 38,400 Bd
• Terminating resistor 120 Ohm, can be switched
• Parameterisation with service tool ZTH EU Pushbutton-operated fast addressing 1 ... 16 possible

Functional data:

• Actuating force motor 1000 N
• Position accuracy 5% absolute
• Manual override Gear disengagement with push-button, can be locked
• Nominal stroke 20 mm
• Actuating time 150 s / 20 mm
• Actuating time variable 90...150 s / 20 mm
• Adaption setting range manual (automatic on first power-up)
• Adaption setting range variable No action Adaption when switched on Adaption after pushing the gear disengagement button
• Override control, controllable via Modbus MAX (maximum position) = 100% MIN (minimum position) = 0% ZS (intermediate position) = 50%
• Override control variable MAX = (MIN + 33%)...100% MIN = 0%...(MAX – 33%) ZS = MIN...MAX
• Sound power level motor 45 dB(A)
• Position indication Mechanically, 5...20 mm stroke

Safety:

• Protection class IEC/EN III Safety extra-low voltage
• Degree of protection IEC/EN IP54
• EMC CE according to 2004/108/EC
• Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14
• Mode of operation Type 1
• Rated impulse voltage supply / control 0.8 kV
• Control pollution degree 3
• Ambient temperature 0...50°C
• Non-operating temperature -40...80°C
• Ambient humidity 95% r.h., non-condensing
• Maintenance Maintenance-free

Weight: 1.5 kg