Noker 0.75kw To 800kw Open Loop Vector Low Voltage Variable Frequency Drives

Short Description:

The NK300 series low voltage ac drive is a open loopd vector ac drive, which is mainly used to control and regulate the speed and torque of three-phase ac asynchronous motor.

NK300 low voltage variable frequency drive adopts high-performance vector control technology, low-speed and high- torque output, with good dynamic characteristics, super overload capability, rich and powerful functions and stable performance. It can be used in the driving of textile, paper making, wire drawing, machine tools, packaging, food, fans, water pumps and other various automated production equipment.

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Product Detail

Product Tags

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/3AC 220vac±15%， 3AC 380vac±15% 3AC 660vac±15%
Input	Input frequency	47--63Hz
Output	Output voltage	0--rated input voltage
Output	Output frequency	V/F control: 0--3000HzSensorless vector control: 0--300Hz
Control features	Control mode	V/FSensorless vector control Torque control
	Operation command mode	Keypad controlTerminal 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	G model:150% 60s, 180% 10s, 200% 3sP model: 120% 60s, 150% 10s, 180% 3s
	Start torque	0.5Hz 150%(SVC), 1Hz 150%(V/F)
	Speed range	1:50(V/F), 1:100(SVC)
	Control precision	±0.5%(SVC)
	Speed fluctuation	±0.5%
	Carrier frequency	1khz---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 frequency Braking 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--20mA AI2: 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 output 2 analogue output:0/4--20mA or 0--10V
	Communication terminals	Offer RS485 Communication interface, support Modbus-RTU communication protocol
Human machine interface	LED display	Display frequency setting, output frequency, output voltage, output current, etc.
Human machine interface	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℃

Model

Model	Rated power (kW)	Horse power (HP)	Input current (A)	Output current (A)
Single phase 220v 50/60hz
NK300-0R4G-S2	0.4	0.5	5.4	2.3
NK300-0R7G-S2	0.75	1.0	8.2	4.0
NK300-1R5G-S2	1.5	2.0	14.0	7.0
NK300-2R2G-S2	2.2	3.0	23.0	9.6
NK300-004G-S2	4.0	5.0	25.0	15.0
NK300-5R5G-S2	5.5	7.5	38.0	23.0
NK300-7R5G-S2	7.5	10.0	50.0	32.0
Three phase 220v 50/60hz
NK300-0R4G-T2	0.4	0.5	3.4	2.3
NK300-0R7G-T2	0.75	1.0	5.0	4.0
NK300-1R5G-T2	1.5	2.0	7.7	7.0
NK300-2R2G-T2	2.2	3.0	10.5	9.0
NK300-004G-T2	4.0	5	18	17
NK300-5R5G-T2	5.5	7.5	26	25
NK300-7R5G-T2	7.5	10	35	32
NK300-011G-T2	11	15	46.5	45
NK300-015G-T2	15	20	62.5	60
NK300-018G-T2	18.5	25	76	75
NK300-022G-T2	22	30	92	91
NK300-030G-T2	30	40	113	112
NK300-037G-T2	37	50	157	150
NK300-045G-T2	45	60	180	176
NK300-055G-T2	55	75	214	210
NK300-075G-T2	75	100	307	304
NK300-090G-T2	90	125	350	340
Three phase 380--415v 50/60hz
NK300-0R7G/1R5P-T4	0.75/1.5	1/2	3.4/5.0	2.1/3.8
NK300-1R5G/2R2P-T4	1.5/2.2	2/3	5.0/6.8	3.8/6
NK300-2R2G/004P-T4	2.2/4.0	3/5	6.8/10	6/9
NK300-004G/5R5P-T4	4.0/5.5	5/7.5	10/15	9/13
NK300-5R5G/7R5P-T4	5.5/7.5	7.5/10	15/20	13/17
NK300-7R5G/011P-T4	7.5/11	10/15	20/26	17/25
NK300-011G/015P-T4	11/15	15/20	26/35	25/32
NK300-015G/018P-T4	15/18.5	20/25	35/38	32/37
NK300-018G/022P-T4	18.5/22	25/30	38/46	37/45
NK300-022G/030P-T4	22/30	30/40	46/62	45/60
NK300-030G/037P-T4	30/37	40/50	62/76	60/75
NK300-037G/045P-T4	37/45	50/60	76/90	75/90
NK300-045G/055P-T4	45/55	60/75	92/113	90/110
NK300-055G/075P-T4	55/75	75/100	112/57	110/150
NK300-075G/090P-T4	75/90	100/125	157/180	150/176
NK300-090G/110P-T4	90/110	125/150	180/214	176/210
NK300-110G/132P-T4	110/132	150/175	214/256	210/253
NK300-132G/160P-T4	132/160	175/210	256/307	253/304
NK300-160G/185P-T4	160/185	210/250	307/350	304/340
NK300-185G/200P-T4	185/200	250/260	350/385	340/377
NK300-200G/220P-T4	200/220	260/300	385/430	377/423
NK300-220G/250P-T4	220/250	300/330	430/468	423/465
NK300-250G/280P-T4	250/280	330/370	468/525	465/520
NK300-280G/315P-T4	280/315	370/420	525/590	520/585
NK300-315G/350P-T4	315/350	420/470	590/665	585/640
NK300-350G/400P-T4	350/400	470/530	665/785	640/720
NK300-400G/450P-T4	400/450	530/600	785/840	720/820
NK300-450G/500P-T4	450/500	600/660	840/880	820/900
NK300-500G/560P-T4	500/560	660/750	880/980	900/1000
NK300-560G/630P-T4	560/630	750/840	980/1130	1000/1100
NK300-630G/710P-T4	630/710	840/950	1130/1290	1100/1250
NK300-710G-T4	710	950	1290	1250
NK300-800G-T4	800	1070	1450	1400
NK300-900G-T4	900	1200	1630	1580
NK300-1000G-T4	1000	1330	1800	1750
NK300-1200G-T4	1200	1600	2160	2100
NK300-1400G-T4	1400	2120	2420	2350
Three phase 660-690v 50/60hz
NK300-015G-T6	15	20	21	19
NK300-018G-T6	18	25	28	22
NK300-022G-T6	22	30	35	28
NK300-030G-T6	30	40	40	35
NK300-037G-T6	37	50	47	45
NK300-045G-T6	45	60	55	52
NK300-055G-T6	55	75	65	63
NK300-075G-T6	75	100	90	86
NK300-090G-T6	90	105	100	98
NK300-110G-T6	110	130	130	121
NK300-132G-T6	132	175	170	150
NK300-160G-T6	160	210	200	175
NK300-185G-T6	185	250	210	195
NK300-200G-T6	200	260	235	215
NK300-220G-T6	220	300	257	245
NK300-250G-T6	250	330	265	260
NK300-280G-T6	280	370	305	300
NK300-315G-T6	315	420	350	330
NK300-350G-T6	350	470	382	374
NK300-400G-T6	400	530	435	410
NK300-450G-T6	450	600	490	465
NK300-500G-T6	500	660	595	550
NK300-560G-T6	560	745	610	590
NK300-630G-T6	630	840	710	680
NK300-710G-T6	710	950	800	770
NK300-800G-T6	800	1050	900	865
NK300-900G-T6	900	1150	1000	970
NK300-1000G-T6	1000	1330	1120	1080
NK300-1200G-T6	1200	1600	1290	1280
NK300-1400G-T6	1400	1860	1510	1460
NK300-1600G-T6	1600	2130	1780	1720

Terminal Wiring Diagram

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.