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G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW Featured Image
  • G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW
  • G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW
  • G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW
  • G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW
  • G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW
  • G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW

G/P Intergrated High Performance Motor Vector Variable Frequency Drives 4-400kW

Short Description:

The NK500 high performance vector control variable frequency drive adopts a new control algorithm and supports two control modes: open loop and closed loop. Can be widely used in synchronous motor and asynchronous motor drive; Support a variety of encoders, high precision closed-loop control.


Product Detail

Product Tags

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Features

The variable frequency drive is mainly composed of rectifier (AC to DC), filter, inverter (DC to AC), brake unit, drive unit, detection unit and micro-processing unit. The inverter depends on the internal IGBT to adjust the output power supply voltage and frequency, according to the actual needs of the motor to provide the required power supply voltage, and then achieve the purpose of energy saving, speed regulation, in addition, the inverter has a lot of protection functions, such as over current, over voltage, overload protection and so on. With the continuous improvement of the degree of industrial automation, the frequency converter has also been widely used.

1.Almost perfect design and superb manufacturing process;

With large design margin for key components and PCB;
Adopting industry-leading automatic spraying and strict automatic testing standards, making sure more stable and reliable products;
With optimized control algorithms and comprehensive protection functions, making more outstanding performance of the complete product.

2.Powerful hardware speed tracking;

With powerful hardware speed tracking, easily responding to the applications with large inertia requiring quick start.

3. Accurate parameter identification;

With an optimized motor parameter autotuning model, providing more precise identification.

4. Enhanced oscillation suppression;

With enhanced oscillation suppression, equal to all applications of motor current oscillation with facility.

5. Fast current limiting;

With fast current limiting function, easily responding to the conditions with sudden load, greatly reducing the probability of inverter’s frequent over-current fault.

6. Dual PID switching;

With dual PID switching function, adapting to varied complicated conditions with flexibility.

7. Original energy-saving mode;

With an original energy-saving mode, when at a light load, reducing the output voltage automatically, making more efficient energy saving.

8. Optimized V/F separation;

With optimized V/F separation function, easily meeting various demands of the power inverter industry.

9. Flux-weakening control;

Flux-weakening control, the max. frequency could be up to 3000Hz, easy for the applications requiring high speed.

10. Powerful PC monitoring software;

With various background monitoring functions, facilitating on-site data collection and commissioning;
Capable of batch parameters upload and download, and autogeneration of commissioning documents.

 

Specification

Item  Specification
Input Input voltage 1AC 220vac(-15%---+10%)， 3AC 380vac(-15%---+10%)
Input frequency 50--60Hz±5%
Output Output voltage 0--rated input voltage
Output frequency 0--500Hz

Control features

 

 Control mode V/F

Sensorless vector control
Operation command mode Keypad control

Terminal control

Serial communication control
Frequency setting mode Digital setting, analog setting, pulse frequency setting, serial communication setting, multi-step speed setting&simple PLC, PID setting, etc. These frequency settings can be combined&switched in various modes.
Overload capacity 150% 60s, 180% 10s, 200% 1s
Start torque 0.5Hz/150%(V/F)

0.25Hz/150%(SVC)
Speed range 1:100(V/F), 1:200(SVC)
Control precision ±0.5%
Speed fluctuation ±0.5%
Carrier frequency 0.5khz---16.0khz, automatically adjusted according to temperature and load characteristics
Frequency accuracy Digital setting: 0.01HzAnalog setting: Max frequency*0.05%
Torque boost Automatically torque boost; manually torque boost: 0.1%--30.0%
V/F curve Three types: linear, multiple point and square type(1.2 power, 1.4 power, 1.6 power, 1.8 power, square)
Acceleration/deceleration mode Straight line/S curve; four kinds of acceleration/deceleration time, range: 0.1s--3600.0s
DC braking DC braking when stating and stoppingDC braking frequency: 0.0Hz--max frequencyBraking time: 0.0s--100.0s
Jog operation Jog operation frequency:0.0Hz--max frequencyJog acceleration/deceleration time: 0.1s--3600.0s
Simple PLC&multi-step It can realize a max of 16 segment speed running via the built-in PLC or control terminal
Built-in PID Built-in PID control to easily realize the close loop control of the process parameters(such as pressure, temperature, flow, etc.)
Automatic voltage regulation Keep output voltage constant automatically when input voltage fluctuating
Common DC bus Common DC bus for several inverters, energy balanced automatically
Torque control Torque control without PG
Torque limit “Rooter”characteristics, limit the torque automatically and prevent frequent over-current tripping during the running process
Wobble frequency control Multiple triangular-wave frequency control, special for textile
Timing/length/counting control Timing/length/counting control function
Over-voltage&over-current stall control Limit current&voltage automatically during the running process, prevent frequent over-current&over-voltage tripping
Fault protection function Up to 30 fault protections including over-current, over-voltage, under-voltage, overheating, default phase, overload, shortcut, etc. Can record the detailed running status during failure& has fault automatic reset function
Input/output terminals Input terminals Programmable DI: 7 on-off inputs, 1 high speed pulse input2 programmable AI1: 0--10V or 0/4--20mAAI2: 0--10V or 0/4--20mA
Output terminals 1programmable open collector output: 1 analogue output(open collector output or high speed pulse output)2 relay output2 analogue output:0/4--20mA or 0--10V
Communication terminals Offer RS485 Communication interface, support Modbus-RTU communication protocol
Human machine interface  LCD display Display frequency setting, output frequency, output voltage, output current, etc.
Multi-function key QUICK/JOG key, can be used as multi-function key
     

 

Environment

 Installation location Indoor, free from direct sunlight, dust, corrosive gas, combustible gas, oil smoke, vapour, drip or salt.
Altitude 0--2000m, Up than 1000m, need to reduce capacity.
Ambient temperature -10℃ to +40℃(derated if the ambient temperature is between 40℃ and 50℃)
Humidity Less than 95% RH, without condensing
Vibration Less than 5.9m/s2 (0.6g)
Storage temperature -20℃ to +60℃

Dimension

Model Rated power(kW) Width
(mm)		 Height(mm) Depth(mm)      
NK500-2S-0.7G-B 0.4 126  

186

  

155
NK500-2S-1.5G-B 1.5
NK500-2S-2.2G-B 2.2
NK500-4T-0.7G-B 0.75
NK500-4T-1.5G-B 1.5
NK500-4T-2.2G-B 2.2
NK500-4T-4.0G-B 4.0 108
260

 188.5
NK500-4T-5.5G-B 5.5
NK500-4T-7.5G-B 7.5
NK500-4T-11G-B 11 128 340 180.5
NK500-4T-15G-B 15
NK500-4T-18.5G-B 18.5  

150

  

 

365.5

  

 

212.5
NK500-4T-22G-B 22
NK500-4T-30G-B 30 180 436  

203.5
NK500-4T-37G-B 37
NK500-4T-45G-B 45  

230

  

572.5

  

350
NK500-4T-55G-B 55
NK500-4T-75G-B 75
NK500-4T-90G-B 90
NK500-4T-110G-B 110
NK500-4T-132G-B 132 280  

 

652.5

  

 

366
NK500-4T-160G-B 160
NK500-4T-185G-B 185

 

 

330

  

 

 

 

 

1252.5

  

 

 

 

 

522.5
NK500-4T-200G-B 200
NK500-4T-220G-B 220
NK500-4T-250G-B 250
NK500-4T-280G-B 280
NK500-4T-315G-B 315  

 

360

  

 

 

1275

  

 

 

546.5
NK500-4T-355G-B 355
NK500-4T-400G-B 400

Application

sv svd (1)
图片1
variable_frequency_drive_application

The variable frequency drive  has obvious energy-saving effect in the application of fan and water pump. After the fan and pump load is regulated by frequency conversion, the power saving rate is 20% to 60%, which is because the actual power consumption of the fan and pump load is basically proportional to the third square of the speed. When the average flow rate required by the user is small, the fan and pump use frequency control to reduce their speed, and the energy-saving effect is very obvious. However, the traditional fan and pump use baffles and valves for flow regulation, the motor speed is basically unchanged, and the power consumption changes little. According to statistics, the electricity consumption of fans and pump motors accounts for 31% of the national electricity consumption and 50% of the industrial electricity consumption.
Of course, in the case of cranes, belts and other needs to speed, the frequency converter has also been widely used.

Customer service

1. ODM/OEM service is offered.

2. Quick order confirmation.

3. Fast delivery time.

4. Convenient payment term.

At present, the company is vigorously expanding overseas markets and global layout. We are committed to becoming one of the top ten export enterprises in China’s electrical automatic product, serving the world with high-quality products and achieving a win-win situation with more customers.

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