Introduction: NVF2G series inverter is a high-performance open-loop vector inverter independently developed by our company. It has the characteristics of large starting torque (0.5Hz, 1.5 times rated torque), strong overload capacity, flexible and convenient operation, forward and reverse PID, etc. This series of inverters is divided into three types: mini type, general type (heavy load) and fan pump type (light load), which has the functions of strong load adaptability, stable and reliable operation, automatic energy-saving operation and so on.
Product parameters
input
Input voltage range: 380V± 57V or 220V±33V
Input frequency range: (47—63)Hz
output
Output voltage range: 0—rated input voltage
Output frequency range: general-purpose: (0-400)Hz; Fan pump type: (0-120) Hz
Overload capacity: 150% rated current for 1 minute, 180% rated current for 2 seconds
Peripheral interfaces
Programmable digital inputs: general-purpose type, fan pump type: 6 channels
Programmable analog input: A|1: (0-10)V input; A|2: (0-10)V or (0/4-20)mA; A|1+A|2
Open collector output: 1 output
Relay output: general-purpose type, fan pump type: 2-way output
Analog output: 2 outputs, (0-10)V or (0/4-20)mA (1 mini)
Operational features
Torque Lift: Automatic Torque Lifting; Manual torque increased by 0.1%-30.0%
Energy braking: built-in or external braking unit, external braking resistor
DC braking: start and stop are optional respectively, action frequency (0-10) Hz, braking current (0-150)%, action time (0.0-50.0) S
Jog control: jog frequency range: (0-400) Hz, jog acceleration and deceleration time (0.1-3600.0)s
Multi-speed operation: Multi-speed operation is achieved through the built-in simple PLC or control multi-function terminal
Automatic Voltage Adjustment (AVR): Automatically keeps the output voltage constant when the grid voltage changes
Automatic current limiting: The current is automatically limited during operation to prevent frequent overcurrent fault tripping
Built-in PID controller: It can easily form a closed-loop control system
Customize JOG function keys: JOG keys can be set to jog operation or forward and reverse operation switching
Protection function: Provide more than 20 fault protection functions: over-current, over-voltage, under-voltage, over-temperature, phase loss, overload, PID disconnection and other protection functions
Technical characteristics:
Control mode: no PG vector control, V/F control
Overload capacity: general-purpose type: 150% rated current 1min; Fan pump type: 120% rated current for 1min
Starting torque: No PG vector control: 150% rated torque at 0.5Hz
Speed control ratio: 1:100 without PG vector control, V/F control: 1:50
Speed Control Accuracy: (No PG Vector Control): ± 0.5% of the maximum speed
Carrier frequency: (0.5-15) kHz
Operating environment
Temperature: The operating ambient temperature is between -10°C and 40°C, and if it exceeds 40°C, it will be derated by 1% for every 1°C increase
Humidity: The relative humidity of the air in the operating environment is ≤90%, and there is no condensation
Altitude: If the altitude exceeds 1000m, 10% derating will be used for every 1000m elevation
Shock and Vibration: Do not install in places where there may be frequent vibrations
Electromagnetic radiation: Installed in a place away from electromagnetic radiation
Air pollution: Do not install in places with air pollution, such as dust, corrosive gases, and other environments
Water and water vapor pollution: Do not install the inverter in places where there is a risk of water or condensation
structure
Degree of protection: IP20
Brake unit: Models with 22kW or less are equipped with a brake unit as standard, and models with 22kW or more are equipped with a brake unit as an option
Cooling method: The whole series of NVF2G inverter is cooled by high-speed DC fan
We will provide customers with high-quality products and satisfactory services with honest and trustworthy, convenient and fast business methods and strict management.
This article introduces CHINT/CHINT NVF2G series inverter protection grade IP20 products, if you are interested in CHINT/CHINT inverter, please also contact our customer service, we look forward to your call, hope our technology and service can bring you a better experience.
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