Shenzhen Kinda Technology Co., Ltd
| Delivery Time | 3~8 Day |
| Payment Terms | TT |
| Supply Ability | Adequate inventory |
| Starting torque | 0.5Hz/150% torque, speed ratio 1:100, dynamic response <20ms, steady speed accuracy ±0.2% |
| Braking method | With DC braking, resistance energy braking |
| High reliability | Mature and reliable drive, protection circuit design, anti-interference design |
| PCB protection | Spray three anti-paint to protect the circuit board intelligently and efficiently |
| start up | High starting torque, ensuring smooth start, low frequency torque, no stalling for parking |
| Torque | Automatic torque boost compensation |
| Place of Origin | China |
| Brand Name | Kinda |
| Model Number | KD330 |
View Detail Information
Explore similar products
Vector Three Phase Motor Frequency Converter 4KW 5.5KW 7.5KW High Reliability
Packaging Machine Motor Frequency Converter 3 Phase 380V - 460V Modular Design
37KW Vfd Motor Drive , Plastic Extruder Frequency Converter For Motor Control
3 Phase Motor Frequency Converter 110KW High Performance For Textile Machine
Product Specification
| Delivery Time | 3~8 Day | Payment Terms | TT |
| Supply Ability | Adequate inventory | Starting torque | 0.5Hz/150% torque, speed ratio 1:100, dynamic response <20ms, steady speed accuracy ±0.2% |
| Braking method | With DC braking, resistance energy braking | High reliability | Mature and reliable drive, protection circuit design, anti-interference design |
| PCB protection | Spray three anti-paint to protect the circuit board intelligently and efficiently | start up | High starting torque, ensuring smooth start, low frequency torque, no stalling for parking |
| Torque | Automatic torque boost compensation | Place of Origin | China |
| Brand Name | Kinda | Model Number | KD330 |
| High Light | vfd motor drive ，ac frequency converter | ||
Kinda Motor Frequency Converter Applied in Hoist Ppplications
1, Features of traditonal system
(1) The traditional system works at heavy load for long time, forward and reverse run frequently, the lifetime of the
system is short;
(2) High failure ratio.
(3) Low efficiency, the power factor is less than 0.8.
(4) The safety performance is bad.
2, Requests for frequency inverters (VFD)
(1) Big output torque at low frequency, it should run smoothly during working.
(2) Big overload capacity.
(3) Less failure ratio, run stably.
(4) Braking unit and braking resistor should be added.
3, Real application (Tower crane)
3. 1 system introduction
The hoist motor in the system is 55kW/380V, the load type is constant torque, to consider its heavy duty characteristic,
the frequency inverter should be selected two sizes higher as below:
3.2 system diagram
3.3 control logic
(1) The tower crane control system provide the forward and reverse signals, while MI1 and DCM closed, the tower
crane runs forwardly, and while MI2 and DCM closed, the tower crane runs reversely:
(2) The running speed of crane is controlled by ON/OFF conditions of MI3, MI4 and MI5, details as below:
| MI5 | MI4 | MI3 | Speed |
| OFF | OFF | OFF | Speed 0 (FD-00) |
| OFF | OFF | ON | Speed 1 (FD-01) |
| OFF | ON | OFF | Speed 2 (FD-02) |
| OFF | ON | ON | Speed 3 (FD-03) |
| ON | OFF | OFF | Speed 4 (FD-04) |
| ON | OFF | ON | Speed 5 (FD-05) |
(3) The inverter output a fault signal to the crane control system, while fault happen, the system will brake and stop immediately.
(4) There is an output FDT1 (controlled by F8-19 and F8-20) ON/OFF signal, while the inverter runs to the setting
frequency, this signal will control the brake to open, to avoid the reverse run happen.
3.4 autotuning
For this kind of heavy duty system, it is better to use Sensorless Vector Control (SVC) mode, it will get better output torque performance.
Before using SVC mode, please perform motor autotunning, do it as below steps:
1) Set F0-02=0 (keypad), set correct value of F2-01 ~ F2-05 (based on motor nameplate);
2) If the load can be removed from motor, please set F2-11=2 (Rotation autotuning, get better performance), if the
load cannot be removed from motor, please set F2-11=1 (Static autotuning). The keypad will display “TUNE”.
3) Press the RUN button, wait until the autotuning finish automatically.
4) Change the value of F0-01=0 (Sensorless vector control)
3.5 Parameters setting
| No. | Function codes | Default | Setting value | Explanation |
| 1 | F0-01 | 2 | 0 | Sensorless Vector Control |
| 2 | F0-02 | 0 | 1 | External singal start / stop |
| 3 | F0-03 | 1 | 6 | Multi-step speed |
| 4 | F0-17 | Model depend | 5s | Acceleration time (adjustable) |
| 5 | F0-18 | Model depend | 0.5s | Deceleration time (adjustable) |
| 6 | F3-10 | 150% | 200% | Torque uppee limit |
| 7 | F5-00 | 1 | 1 | Forward |
| 8 | F5-01 | 2 | 2 | Reverse |
| 9 | F5-02 | 0 | 12 | Multi-step speed termnial 1 |
| 10 | F5-03 | 0 | 13 | Multi-step speed termnial 2 |
| 11 | F5-04 | 0 | 14 | Multi-step speed termnial 3 |
| 12 | F6-02 | 2 | 2 | Fault output |
| 13 | F6-05 | 0 | 3 | FDT1 output |
| 14 | F8-19 | 50.00Hz | 3.00Hz | Setting FDT1 output frequency |
| 15 | FD-00 | 0.00% | 16% | Multi-step speed 0 (adjustable) |
| 16 | FD-01 | 0.00% | 16% | Multi-step speed 1 (adjustable) |
| 17 | FD-02 | 0.00% | 30% | Multi-step speed 2 (adjustable) |
| 18 | FD-03 | 0.00% | 50% | Multi-step speed 3 (adjustable) |
| 19 | FD-04 | 0.00% | 70% | Multi-step speed 4 (adjustable) |
| 20 | FD-05 | 0.00% | 82% | Multi-step speed 5 (adjustable) |
3. 6 Problems faced during commissioning
(1) For KD330-09000T4, it needs connect additional braking unit and braking resistor to consume the regenerated
energy. The parameter of FA-04 is the braking threshold, the default value is 135%. The stand DC bus voltage is
540V, 540*135%=729V, that means while the DC bus voltage reach to 729V, the Braking unit will start work.
Sometimes, the fault of over voltage will happen, please reduce the value of FA-04 to avoid it.
(2) Cause the tower working distance is too long, during down running, the inverter works at regenerated status for long time, so the braking resistor should be selected bigger, to get better performance. In this system, it is
select as 4ohm, 10kW.
Company Details
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
12000000.00-15000000.00
Employee Number:
300~500
Ecer Certification：
Active Member
Shenzhen Kinda Technology Co., Ltd., established in 2012, is a technology innovation enterprise. Specializing in the production of export servo drive inverters permanent magnet synchronous motors, integrating product design, development and production. Our company is located in the urban area of ... Shenzhen Kinda Technology Co., Ltd., established in 2012, is a technology innovation enterprise. Specializing in the production of export servo drive inverters permanent magnet synchronous motors, integrating product design, development and production. Our company is located in the urban area of ...
Get in touch with us
Leave a Message, we will call you back quickly!