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  • VFD
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  • VFD
VFD
Variable Frequency Drive
Astro variable frequency drive is suitable for a variety of industrial applications. It is well applicable in all electrical, industrial equipment built with motors, like manufacturing equipment, compressor, elevator, etc. Its reliable SVC vector control and stable operation speed can optimize motor performance and extend its lifecycle, also saving your cost. The Astro variable frequency drive features a faster acceleration/deceleration, faster reacting to load change, and proactive responding while power shedding. In addition, Astro is equipped with a large silent fan, which is conducive to the rapid dissipation of heat; its simplified wiring method and parameter setting are easy to use.
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Main Features
  • V/F Control , Sensor-less Vector Control (SVC) and Feedback Vector Control (FVC) selectable
  • Automatic torque boost and slip compensation
  • Fast acceleration and deceleration performance
  • 150% torque at 0.5Hz
  • Provide precise speed control 0.5%
  • Acceptable wide input voltage from 380 (-15%) to 440V (10%)
  • Conformal coating to withstand harsh environment
  • Built-in RS-485 MODBUS communication
  • In-Built dynamic braking unit
  • Simplified parameter setting for easy startup
  • Standard potentiometer and support external keypad
  • Flexible programmable I/O connection
  • Control motor to deceleration to stop while sudden power failure to prevent damage
General
CAPACITY
VFD1.5-60
INPUT
Frequency Range
VFD±5% (47.5 ~ 63Hz)
Input Voltage
VFDAC,1PH,220V(-15%)～240V(+10%) AC,3PH,380V(-15%)～440V(+10%)
Rated Frequency
VFD50/60 Hz
OUTPUT
AC Voltage Regulation (Batt. Mode)
VFD0 ~ Input Voltage
Surge Power
VFD0.1 ~ 500Hz
Efficiency (Peak)
VFDPlease refer to Rated Parameter table
Transfer Time
VFDPlease refer to Rated Parameter table
ENVIRONMENT
Noise Level
VFD50dBA max.
Storage temperature
VFD-20°C ~ 60°C
Operation temperature
VFD-10°C ~ 50°C (If temperarture is higher than 40°C, the output capacity will be derated 1% per 1°C increase)
Storage humidity
VFD＜90%RH
Operation humidity
VFD＜90%RH
STANDARD
Safety
VFDStandards:IEC 61800-5-1
EMC
VFDStandards:IEC 61800-3, C3
BASIC PARAMETERS
V/F separation
VFDFull separation, Half separation
Highest frequency
VFD<0.75-3.7K> Vector control: 0～500Hz ;V/F control：0～500Hz <5.5-22K> Vector control: 0～320Hz;V/F control：0～500Hz
Carrier frequency
VFD0.8kHz～8kHz (Support up to 16KHz carrier frequency) Adjusted automatically according to the load characteristics.
Input frequency resolution
VFDDigital setting: 0.01Hz Analog setting: max. × 0.025%
Control mode
VFD<0.75-3.7K>Open-loop vector control (SVC), V/F control<5.5-22K>Close-loop vector control (FVC), Open-loop vector control (SVC), V/F control
Starting torque
VFD<0.75-3.7K> 0.5Hz/150% (SVC); <5.5-22K> 0.5Hz/150% (SVC), 0Hz / 180% (FVC)
Adjustable speed ratio
VFD<0.75-3.7K> 1：100 (SVC); <5.5-22K> 1：100 (SVC),1：1000 (FVC)
Speed control accuracy
VFD<0.75-3.7K> ±0.5% (SVC); <5.5-22K> ±0.5% (SVC), ±0.02% (FVC)
Overload capability
VFD<0.75-3.7K> 150% of rated current: 60 seconds, 170% of rated current: 12 seconds, 190% of rated current: 1.5 seconds; <5.5-22K> 150% of rated current: 60 seconds,220% of rated current: 1 second
Torque boost
VFDAuto torque boost; Range of manual torque boost 0.1%~30.0%
V/F curve
VFDThree types: Linear, Multi-point, square curve (1.2 power, 1.4 power, 1.6 power, 1.8 power, 2 power)
Acceleration and deceleration time
VFDLinear and S-curve acceleration and deceleration modes available. The range of acceleration and deceleration time is 0.0~6500.0s.
DC braking
VFDBraking frequency: 0.00Hz ~ Maximum frequency Braking time: 0.0s~36.0s Braking current value: 0.0%~100.0%
JOG control
VFDJOG frequency range: 0.00Hz ~ Maximum frequency (5Hz in default). JOG acceleration and deceleration time: 0.0s~6500.0s.
Built-in PID
VFDSimplify the establishment of a closed-loop control system
Automatic voltage regulation (AVR)
VFDKeep the output voltage in stable when the grid voltage fluctuates.
Stall prevention from overvoltage and overcurrent
VFDThe current and voltage are limited automatically during operation to prevent frequent tripping due to over-current and over-voltage.
Rapid current limit
VFDReduce the risk of over-current faults to keep VFD operated normally.
Torque limit and control
VFDLimit the torque automatically during operation to prevent frequent tripping due to over-current.
Braking unit
VFDBuilt-in braking unit for 22KW and below models
DISPLAY BUTTONS
LED display
VFDDisplay parameters
Protective function
VFDMotor short-circuit detection at power-on, output phase loss protection, over-current protection, over-voltage protection, under-voltage protection, overheat protection, overload protection and etc
Key lock and function selections
VFDIt allows users to partially or fully lock the keys or define operated range for partial keys to prevent misoperation
Keypad
VFD0.75K-3.7K model: standard keypad (Optional detachable keypad can be purchased seperately); 5.5K-22K model: standard detachable keypad
Copy parameters (Only for 5.5-22K model)
VFDParameters can be copied through the standard external keyboard
SPECIAL FEATURES
Deceleration to stop
VFDIn case of instantaneous power drop, the load feedback energy is used to compensate the voltage drop to maintain the inverter’s normal operation over that short period.
Rapid current limit
VFDReduce the risk of over-current faults to keep VFD operated normally.
Timer control
VFDSetting range: 0.0Min ~ 6500.0Min
Communication
VFD<0.75-3.7K> Modbus; <5.5-22K> Modbus、CANLink、CANOpen、Profibus-DP、ProfiNET
INPUT/OUTPUT
Command source
VFDOperation panel, control terminal and serial communication port.
Frequency source
VFD<0.75-3.7K> Digital setting, Analog voltage setting, Analog current setting, Pulse setting and Serial port setting.<5.5-22K>Keyboard setting (saving/not saving when power-off), analog voltage setting, analog current setting, pulse setting, serial port setting, panel encoder setting, multi-speed running setting, simple PLC setting, PID setting, analog A13 setting (key knob).It can be switched in multiple ways.
Auxiliary frequency source
VFD<0.75-3.7K> 5 options to provide flexible auxiliary frequency fine-tuning and frequency synthesis. <5.5-22K>10 options to provide flexible auxiliary frequency fine-tuning and frequency synthesis.
Input terminals
VFD<0.75-3.7K> 4 digital input terminals, one of which supports high-frequency pulse input up to 50kHz, 1 analog input terminal supporting 0 ~ 10V voltage input or 0 ~ 20mA current input, 1 rotary potentiometer analog input; <5.5-22K>7 digital input terminals, one of which supports high-speed pulse input up to 100kHz, 2 analog input terminals, support 0～10V voltage input or 0～20mA current input, 1 rotary potentiometer analog input
Output terminals
VFD<0.75-3.7K>1 high-speed pulse output terminal supporting 50kHz step-wave signal output, 1 relay output terminal, 1 analog output terminal supporting 0~20mA current output or 0~10V voltage output<5.5-22K>1 high-speed pulse output terminal, support 100kHz square wave signal output, 1 digital output terminal, 2 relay output terminals, 2 analog output terminals, support 0~20mA current output or 0~10V voltage output
INTERACE
Communication Port
VFDRS-485
Brochure VFD_Brochure
Manual VFD 0.75-3.7K_Manual
Manual VFD 5.5-22K_Manual
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