NVK24A-MP-RE - Belimo Retrofit communication-capable globe valve actuator with emergency control function for 2-way and 3-way globe valves | ideal for globe valves

For any Belimo Actuators that are in stock at iacs, we offer Free Delivery and Next 1-2 Day Delivery.

The Belimo NVK24A-MP-REis a kind of Actuator used to operate valves in HVAC applications and systems.

The force applied by the Torque of the NVK24A-MP-RE 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.

Find the appropriate Belimo Actuator for your system at the greatest price at iacs.

If you have questions about size or installation, consult the Belimo custom datasheet above or send an email to iacs to get personalised guidance.

NVK24A-MP-RE Retrofit communication-capable globe valve actuator with emergency control function for 2-way and 3-way globe valves

• Actuating force 1000 N

• Nominal voltage AC/DC 24 V

• Control modulating DC (0) 0.5 V...10 V, variable

• Nominal stroke 20 mm

• Design life SuperCaps 15 years

Features

• Delivery condition (capacitors) The actuator is completely discharged after delivery from the factory, which is why the actuator requires approximately 20 s pre-charging time before initial commissioning in order to bring the capacitors up to the required voltage level.
• Adjustable-parameter 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-GEN.
• 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 - temporary. The gear is disengaged and the actuator decoupled for as long as the button is pressed.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 Setting ex-works: 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.
• Direction of stroke switch When actuated, the direction of stroke switch changes the running direction in normal operation.The direction of stroke switch has no influence on the emergency setting position (POP) which has been set
• Adaption of stroke range The first time the supply voltage is switched on, i.e. at the time of commissioning, the actuator carries out a stroke adaption, which is when the operating range and position feedback adjust themselves to the mechanical stroke.Manual triggering of the adaption can be carried out by pressing the "Adaption" button or with the PC-Tool.The actuator then moves into the position defined by the positioning signal.
• Rotary knob emergency setting positionThe "Emergency setting position" rotary knob can be used to adjust the desired emergency setting position (POP) from 0% to 100% in 10% increments. The rotary knob is in reference to the adapted or programmed height of stroke. In the event of an electricity interruption, the actuator will move into the selected emergency setting position, taking into account the bridging time (PF) of 2 s which was set ex-works.Settings: The rotary knob must be set to the "Tool" position for retroactive settings of the emergency setting position with the BELIMO service tool MFT-P. Once the rotary knob is set back to the range 0 … 100%, the manually set value will have positioning authority
• Bridging time (PF) Electricity interruptions can be bridged up to a maximum of 10 s.In the event of an electricity interruption, the actuator will remain stationary in accordance with the set bridging time. If the electricity interruption is greater than the set bridging time, then the actuator will move into the selected emergency setting position (POP).The bridging time set ex-works is 2 s. This can be modified at the site of operations with the use of the BELIMO service tool MFT-P.Settings: The rotary knob must not be set to the "Tool" position!Only the values need to be entered for retroactive adjustments of the bridging time with the BELIMO service tool MFT-P.

Electrical data 

• Nominal voltage AC/DC 24 V
• Nominal voltage frequency 50/60 HzNominal voltage range AC 19.2...28.8 V / DC 21.6...28.8 V
• Power consumption in operation 2.5 W
• Power consumption in rest position 1.5 W
• Power consumption for wire sizing 6 VA
• Connection supply / control Terminals 4 mm² and cable 1 m, 4 x 0.75 mm²
• Parallel operation Yes

Functional data

• Actuating force 1000 NPositioning signal Y DC 0...10 V
• Positioning signal Y note Input impedance 100 kΩ
• Operating range Y DC 0.5...10 V
• Operating range Y variable: Start point DC 0.5 ... 30V, end point DC 2.5 ... 32V
• Position feedback U DC 0.5...10 V
• Position feedback U note max. 0.5 mA
• Position feedback U variable: Start point DC 0.5, end point DC 2.5 ... 10V
• Setting emergency setting position Actuator spindle 0...100%, adjustable (POP rotary knob)Bridging time (PF) variable 1 ... 10 s
• Position accuracy 5% absolute
• Manual override Gear disengagement with push-button
• Nominal stroke 20 mm
• Actuating time 150 s / 20 mm
• Actuating time emergency control function35 s / 20 mm
• Override control MAX (maximum position)100 %
• Override control MIN (minimum position) 0 %
• Override control ZS (intermediate position, only AC)50 %
• Override control ZS variable ZS = MIN ... MAX
• Sound power level motor max. 55 dB (A)
• Sound power level motor note 55 dB (A) @ 90 s running time
• Sound power level emergency setting position max.60 dB (A)
• Position indication Mechanical 5 … 20 mm stroke

Safety

• Protection class IEC/EN III 
• Safety extra-low voltage
• Degree of protection IEC/EN IP54EMC CE in accordance with 2004/108/ECCertification IEC/EN Certified to: IEC/EN 60730-1 and IEC/EN 60730-2-14
• Mode of operation Type 1.AA
• Rated impulse voltage supply / control 0.8 kV
• Control pollution degree 3
• Ambient temperature 0°C ... 50°C
• Non-operating temperature -40°C ... 80°C
• Safety Ambient humidity 95% r.h., non-condensing 

Maintenance

• Maintenance-freeWeight 
• Weight approx. 1.610 kg