Function extension board for RS-485 communication.
DC5V power consumption: 40mA. MITSUBISHI inverter FR-D720S series.
Voltage level: single phase 200V FR-V540-2.2K-CH PDF.
Frequency converter capacity: 0.2KW.
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-V540-2.2K-CH To this end, the matrix type of AC - AC variable frequency arises at the historic moment FR-V540-2.2K-CH PDF.
Because the matrix type alternaating current frequency saves the intermediate DC link, thereby, the electrolytic capacitor with large volume and high price can be omitted FR-V540-2.2K-CH Manual.
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 FR-V540-2.2K-CH PDF.
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 MITSUBISHI INSTRUCTION MANUAL. Power: 0.4kw.
Purpose: high frequency braking resistor.
The use rate of the built-in regenerative brake of the transducer can be promoted.
When using the FR-ABR type brake resistor, the short circuit piece between the terminal PR-PX is removed. Does not remove the short circuit chip will lead to overheating of the brake resistor MITSUBISHI INSTRUCTION MANUAL.
The utilization rate of the regenerative braking should be less than the allowable brake use rate in the above table.
With the operating frequency of the brake resistor to reach 300 degrees C or higher, it is necessary to take protective measures and cooling MITSUBISHI INSTRUCTION MANUAL FR-V540-2.2K-CH INSTRUCTION MANUAL.
MYS type resistor can be used. But please pay attention to the allowable brake use rate.
Do not remove the terminal P/+ and P1 between thhe short circuit chip, in addition to connecting the DC reactor FR-V540-2.2K-CH Manual.
The installation of thermal relay, to avoid overheating and burn the braking resistor.