The function of the braking unit is to divert into a braking resistor the regenerative energy produced in the process of decelerating the motor, converting that energy into heat. Regenerative energy flows from the motor into the inverter DC Bus, manifested as increased bus voltage. The advantage gained using the braking unit is improved braking performance and shorter deceleration time of the load.
The braking unit in the DBU series is applied to consume in the braking resistor the regenerative energy produced in the deceleration process of the motor in the form of heat energy .In this way ,the braking performance of the frequency inverter is improved and the braking time of the frequency inverter is reduced .Features
1. Safety: The tripping function of the equipment against IGBT short circuit and breakdown can effectively avoid the hidden danger of fire caused by the breakdown of IGBT and the overload operation of the resistor in a long time.
2. Wide Compatibility :The special design of this braking unit allows for the usage of common resistance rather than the non-inductive resistance .It can be adjusted to adapt to 600V-760V DC chopper wave voltage . Further more, this device is used in various type of medium and low voltage frequency inverter (Specially designed product reaches up to 1200V)
3. Economy: This facility is characterized by high performance cost ratio . With relatively economical price .its quality is same as that of similar imported products. It is therefore considered as the most economical and practical component product for the braking unit of the inverter .
4. A book-type design is employed in this braking unit which can be installed in a parallel connection with zero clearance .It is recommended that it can be connected in parallel with 3 units at most .
Wiring diagram for inverter system
Recommended brake assembly matching specification
Clients in CHZIRI Electrical
|Inverter||Braking Unit||Braking resistor|
|Voltage(V)||Motor(KW)||Model||Quantity(PCS)||Recommed resistor value||Resisitor specification||Quantity(PCS)|
|Braking Resistor Box||Quantity(PCS)|
Main Features of frequency inverterZVF300 Series frequency inverter are high performance open loop vector inverters for controlling asynchronous AC induction motors and permanent synchronous motors . 1. Output frequency :0-600Hz.2. Multiple password protection mode3. Remote control operation keypad, convenient for remote control.4. V/F curve &multi-inflection point setting, flexible configuration .5. Keyboard parameter copy function . easy to set the parameters for multi-inverters .6. Wide industry application . to expand special function according to different industries.7. Multiple hardware and software protection and optimized hardware for anti-interference technology.8. Multi-step speed and wobble frequency running (external terminal 15 steps speed control).9. Unique adaptive control technology . Auto current limiting and voltage limiting and under-voltage restrain .10. Optimized external installation and internal structure and independent air flue design , fully enclosed electrical space design .11. Output automatic voltage regulation function .(AVR),automatically adjust the output pulse width . to eliminate the influence of the grid change on load .12. Built-in PID regulation function to facilitate the realization of closed loop control of the temperature ,pressure and flow . and reduce the cost of the control system .13. Standard MODBUS communication protocol . easy to achieve the communication between PLC,IPC and other industrial equipments.Inverter Outline Dimension (Unit:mm)
ZVF300 Frequency Inverter Model Selection Guide
|Three phase 380V/440V± 20%|| || || || || || || || |
FAQ 1. Can I get some samples?Yes, Sample order is available for quality check and market test .But you have to pay for it .2. What's delivery time?It usually takes about 3-5 working days for small order and 10-15 days for big order .3. What's your payment terms?We usually accept all kinds of payment terms .Such as T/T,L/C, Western Union.Cash.4. What's your warranty terms?We offer 12 months warranty time .5. Do you have the products in stock?Depends on your request ,We have standard models in stock. Some special products and big order will be newly produced according to your order .6. Can I mix different power in one container .Yes ,Different models can be mixed up in one container ,even one order .7. How does your factory do the quality control?Quality is priority ,we always attach the importance to quality control from the beginning to the end of the production .every product will be fully assembled and carefully tested before packing and shipping .8. Can you sell spare parts ?If you are using CHZIRI products .we can sell spare parts to you . But we couldn't sell the half-finished products.9.I would like to know if you have a partner for export?Yes .CHZIRI Electrical have the right to export and can sell electrical product all over the world..10. Can you make the inverter and soft starter control boards (switchgear)?Yes. We have a lot of experience to design frequency inverter and soft starter cabinet according to your request . But you can send us the wiring diagram .11.Can the inverter connect with computer?Yes .All inverters have built-in RS485 port .and support Modbus communication protocol. 12.How can I trust you ?The core of CHZIRI electrical culture is honesty and loyalty .our company has been audited and approved ISO9001,CE.CCC. Assessment report will could be sent to you by e-mail .also .we are the made-in-china's gold supplier since 2008.Now we have clients all around the world .