FD20 Series Mini Frequency Inverter
FD20 series frequency inverter is the latest mini size low-power variable frequency drive (VFDs) developed by our company, which integrates years of product and market experience from our research and development team.
bASIC INFO
AC1PH220V, AC3PH220V AC3PH380V
0.4-15kW
Forced air cooling
Fan, water pump
1 PCS
2~10 days, depends on order quantities
Yes
Features
Compact structural design
Full functionality including PID, photovoltaic water supply, constant pressure water supply, etc.
V/f and open-loop vector control
Standard Modbus communication capability
Our master control system employs a more powerful core, more efficient motor control algorithms making it more adept at handling various high-performance applications.
We have specially designed a cooling system for the compact structure, with air duct isolation. We conducted thermal simulations for the entire series to ensure the cooling effect, thereby making the FD20 perform stably and reliably.
This device is equipped with standard interfaces, which can be used for external connection of the local keyboard.
0.4~5.5kW models support DIN rail mounting
Parameters
| Item | Value |
|---|---|
| Input Voltage, Frequency | Three - phase AC380V±5%, 50/60Hz Single - phase AC220V±5%, 50/60Hz |
| Voltage Allowable Fluctuation Range | Three - phase AC380V - 450V Single - phase AC190V - 250V |
| Voltage | 0 - 280V |
| Frequency | G - type: 0 - 500Hz; V/F control: 0 - 500Hz |
| Overload Capacity | G - type: 150% rated current for 60s, 180% rated current for 3s P - type: 120% rated current for 60s, 150% rated current for 3s |
| Control Method | V/F control, vector control without speed sensor (SVC) |
| Frequency Setting Resolution | Digital input: Maximum frequency × 0.025% or 0.01Hz Analog input: 0.01Hz |
| V/F Curve | Three types: linear type, multi - point type, Nth power V/F curve |
| Torque Boost | Two modes: automatic, manual Manual setting: rated output voltage 0 - 30.0% Automatic: voltage compensation according to load current |
| Slip Compensation | 0 - 30.0Hz slip compensation (V/F control); 0 - 150% rated slip (sensorless vector control) |
| Motor Parameter Self - Learning | No - load self - learning: complete motor parameter self - learning in no - load and steady state for best control effect Full - load self - learning: complete self - learning under full - load current impact, with over - current suppression function |
| Current Limit Control | Specifically for applications with low grid voltage or frequent undervoltage trips; within allowable voltage range, system uses unique algorithm and load distribution logic to maintain longest possible operation time |
| Multi - stage Speed and PID Operation | 16 multi - stage speeds for frequency conversion. Multiple operation modes selectable: PID operation, preset frequency, central frequency, memory of motor status and restoration |
| PID Control | Internal PID controller (closed - loop frequency conversion) |
| RS485 Communication | Standard configuration RS485 communication interface Baud rate: 4800 - 115200bps (adjustable, default 9600bps) Communication protocol: MODBUS - RTU protocol (default), can be set to other protocols via modification |
| Digital Input | Up to 8 digital inputs (can be expanded), supports various control modes like multi - stage speed, simple PLC, PID, etc. 1 route analog input (TA/TC), supports 0 - 10V or 4 - 20mA optional, can be set as frequency setting or torque setting |
| Analog Output | 1 route analog output, output range 0 - 20mA or 0 - 10V adjustable, can realize output frequency, output current, etc. |
| Automatic Energy Saving Operation | Adjustable according to load, steady - state, non - steady - state, three types selectable for best energy saving effect |
| Jogging | 0 - 650.0s continuously adjustable, S - type, linear type selectable |
| Timing | Built - in real - time clock, accurate to second, supports timing start, timing stop |
| Braking | Energy - consuming braking, DC braking and braking resistor can be connected Braking time: 0.0 - 30.0s adjustable; braking current: 0 - 100% rated current adjustable DC braking start frequency: 0.00Hz - 60.00Hz adjustable; maximum DC braking current: selectable |
| Deceleration Stop and Speed Reversal Function | Reversal can be realized during deceleration stop, maximum frequency motor current |
| Carrier Frequency Adjustment | Can realize smooth transition of carrier frequency during acceleration/deceleration, reduce motor noise |
| Inverter Operation | Internal counter one, convenient for system integration |
| Function | Up/down frequency setting, frequency jump operation, reverse rotation prohibition, transfer frequency compensation, RS485 communication, frequency setting increment/decrement, fault self - recovery, etc. |
Application
