MITSUBISHI inverter series: FR-A820.
Voltage level: three phase 200V.
Power: 2.2kw.
SLD converter rated current: 16.7A.
Structure and function: Standard model.
Type: CA.
Substrate coating: have.
Parameters can be selected by 4 different rated current and different overload rating (SLD (ultra light load) rated, LD (light load) rating, ND (general load) rating, HD (weight).
Type load) for selection.
You can choose the most suitable frequency converter for use; and by selecting a transducer with a SLD or LD rated level,
Be able to reduce the size of the device (compared with the FR-A700 series, to reduce the volume of equipment).
For applications that require high torque at low speeds, the HD rating is the most suitable.
The controller is used to control and monitor the frequency converter through the network.
Standard corresponding RS-485 communication (MITSUBISHI converter protocol, Modbus-RTU protocol) data transmission speed up to 115200bps.
MITSUBISHI inverter FR-D720S series.
Voltage level: single phase 200V.
Frequency converter capacity: 2.2KW.
VVVF frequency control, vector control frequency conversion, direct torque control is a kind of AC - DC - AC frequency conversion.
The common drawback is that the input power factor is low, the harmonic current is big, and the DC circuit needs large energy storage capacity,
Renewable energy and can not be fed back to the power grid, which can not be carried out in the four quadrant operation FR-A820-2
FR-A820-2.2K-1(FR-A820-00167-2-60)2K-1(FR-A820-00167-2-60). To this end, the matrix type of AC - AC variable frequency arises at the historic moment.
Because the matrix type alternating current frequency saves the intermediate DC link, thereby, the electrolytic capacitor with large volume and high price can be omitted FR-A820-2.2K-1(FR-A820-00167-2-60).
It can achieve a power factor of L, the input current is sinusoidal and can run in four quadrant, the power density of the system is large.
Although the technology is not yet mature, but still attract a large number of scholars in-depth study.
In fact, the quality is not the indirect control current, flux, but the torque is directly used as the control to achieve FR-A820-2.2K-1(FR-A820-00167-2-60). MITSUBISHI inverter FR-E740 series.
Voltage level: 3 phase 400V.
Frequency converter capacity: 0.75KW.
Allow short-time overload (200% 3S).
The machine itself does not need to purchase another operating panel.
Provide USB interface to connect with the computer, you can use the FRConfigurator software to set the parameters of the inverter or monitor.
Inverter surface with PU interface, FR-E500 operating panel can be directly connected to the E700 series. The installation dimensions are in full agreement with FR-E500.
Allow side by side installation, saving installation space
Simple maintenance: equipped with comb type wiring board, wiring more convenient, the replacement of the same series inverter, no stitches, as long as the original inverter control terminal. MITSUBISHI inverter FR-F720 series.
Voltage level: three phase 200V.
Frequency converter capacity: 3.7KW.
When the inverter is running, the starting current and starting torque of the motor are how?
With the operation of the inverter, with the acceleration of the motor to improve the frequency and voltage,
The starting current is limited to 150% below the rated current (according to the different types of aircraft, 125%~200%).
Starting with power frequency power supply, the starting current is 6~7 times of the rated current, therefore, the impact on the mechanical and electrical FR-A820-2.2K-1(FR-A820-00167-2-60).
The inverter drive can be smoothly start (start time longer).
The starting current is 1.2~1.5 times of the rated current, and the starting torque is 70%~120%% rated torque;
For the inverter with the torque automatic enhancement function, the starting torque is more than 100%, which can start with full load FR-A820-2.2K-1(FR-A820-00167-2-60).