Renda current vector inverter is a vector control technology through coordinate transformation, the three-phase system equivalent conversion into M-T two-phase system, the AC motor stator current vector decomposition into two DC components (that is, magnetic flux component and torque component), so as to achieve the purpose of controlling the magnetic flux and torque of AC motor respectively, so as to obtain the same good control effect as DC speed regulation system.
Application fields of Randa current vector inverter:
Metal products industry
With closed-loop adjustment with a given front speed, in tension synchronous control systems such as direct wire drawing machines, fast response, smooth operation, simple and reliable control Fast transport of small loads
Load estimation saves time and safely and intelligently increases operating speeds, and the zero servo function makes crane runs smoothly and reduces mechanical wear on gears and brakes, which reduces maintenance and increases uptime
Elevator applications
Low pitch fluctuations make passengers feel smooth and comfortable when riding, and the accurate load estimation function allows the elevator to be accurately positioned under various load conditions
Mine lifting
Stable frequency output makes the mine hoist run smoothly and safely
Steel industry
Excellent low-frequency output torque makes the tie steel production line run freely
Paper industry
The winding of paper has very high requirements for tension fluctuations, and the precision of torque calculation makes the output of torque smooth and responds quickly
CNC machine tool applications
At low speed or even zero speed, 150% rated torque runs smoothly, so that CNC machine tools, printing machinery and other loads have almost perfect performance
Textile industry
Whether it is a spinning machine or a roving machine, the independent design of the air duct of the Renda inverter can fully meet the workshop site environment of multi-cotton wool, and the good heat dissipation design makes the inverter run safely and reliably for a long time.
◆Control mode: no PG vector control, V/F control, torque control
◆Overload capacity: 150% rated current 60s; 180% rated current 10s
◆Starting torque: no PG vector control: 150% starting torque at 0.5Hz
◆Speed regulation ratio: no PG vector control: 1:100
◆Speed control accuracy: no PG vector control: ±0.5% maximum speed
◆Carrier frequency: 0.5K~15.0KHz
◆Frequency setting mode: digital setting, analog setting, serial communication setting, multi-segment speed, PID setting, etc.
◆ Multi-stage speed control function, can realize 8-stage speed control
◆ Pendulum frequency control function, suitable for textile control occasions.
◆ PID control function.
◆ Instantaneous power failure without stopping function.
◆ Speed tracking and restarting function, which can realize smooth starting without impact on the rotating motor.
◆ Automatic voltage regulation function: when the grid voltage changes, it can automatically keep the output voltage constant.
◆ Provide a variety of fault protection functions: overcurrent, overvoltage, undervoltage, overtemperature, phase loss, overload and other protection functions.
◆High-speed DSP digital processing chip, high-performance IGBT inverter module.
Renda inverter specification sheet
| power (kW). |
0.75 |
1.5 |
2.2 |
3.7 |
5.5 |
7.5 |
11 |
15 |
18.5 |
22 |
30 |
37 |
45 |
55 |
75 |
| output |
voltage |
3-phase O one rated input voltage |
| rated current (A). |
2.5 |
4.0 |
6.0 |
9.0 |
13 |
17 |
25 |
32 |
37 |
45 |
60 |
75 |
90 |
110 |
150 |
| overload capacity |
constant torque/heavy duty applications: 150% 1 minute, 180% 20 seconds, square torque/light load applications: 120% 1 minute, 150% 1 second |
| input |
rated voltage/frequency |
3-phase 380V/440V; 50Hz/60Hz
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| allowable voltage range |
304V-456V voltage imbalance: ≦3%; Permissible volatility: ±5%. |
| Rated current(A) |
3.7 |
5.4 |
7.0 |
10.7 |
15 |
20.5 |
27 |
35 |
38.5 |
46.5 |
62 |
76 |
92 |
113 |
157 |
| brake unit |
standard built-in |
needs to be external |
| protection level |
IP20 |
| cooling mode |
forced air cooling |
power (kW)
|
90 |
110 |
132 |
160 |
200 |
200 |
250 |
280 |
315 |
355 |
400 |
450 |
500 |
560 |
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| output |
voltage (V). |
3-phase 0~forehead input voltage
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| rated current (A). |
176 |
210 |
250 |
300 |
380 |
420 |
470 |
540 |
600 |
660 |
730 |
840 |
900 |
950 |
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| overload capacity |
constant torque/heavy duty applications 150% 1 minute, 180% 20 seconds, square torque/light load applications: 120% 1 minute, 150% 1 second |
| input |
rated voltage/frequency |
3-phase 380V/440V; 50Hz/60Hz
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| allowable voltage range |
304V~456V； Voltage unbalance: ≦3%; Allowable lead rate fluctuations: 5%
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| rated current [A). |
180 |
214 |
256 |
307 |
385 |
430 |
480 |
548 |
610 |
970 |
610 |
850 |
910 |
960 |
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| brake unit |
External required |
| anti-expansion level |
IP20 |
| cooling mode |
forced air cooling
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AD300-T41606/200P and above products are equipped with 100-current electric hanger
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| power [kW). |
0.4 |
0.75 |
1.5 |
2.2 |
| output |
voltage (V). |
single-phase 0 ~ rated input voltage |
| rated current (A). |
2.5 |
4.5 |
7 |
10 |
| overload capacity |
150% 1 minute, 180% 20 sec
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| input |
rated voltage/frequency |
200V/240V:50Hz/60Hz |
| allowable voltage/frequency |
175V~264V: voltage imbalance: ≤3%; Permissible frequency fluctuations: ±5%. |
| rated current (A). |
5.3 |
8.3 |
14 |
23 |
| brake unit |
standard built-in |
| protection level |
IP20 |
| cooling mode |
forced air cooling |
