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    3 hp VFD, Single Phase to Three Phase VFD

    $238.14
    Low price 3hp VFD, convert 220V/230V/240V 1 phase to 3 phase, 10amps, RS485 enabled, shipping weight 3kg, manufacturer direct sale.
    SKU: GK3000-2S0022
    Free shipping
    Delivery date: 6-12 days

    3hp variable frequency drive, 2.2kW, single phase 220V-240V to three phase VFD, 10 amps.

    Specification:

    Basics Model GK3000-2S0022
    Capacity 3 hp (2.2 kW)
    Shipping weight 3 kg
    Dimension 184*98*135 mm
    I/O Feature Rated current 10 A
    Input voltage 1 phase 220~240V AC ±15%
    Input frequency 50Hz/ 60Hz
    Output voltage 3 phase AC 0~input voltage
    Output frequency 0.00~400.00Hz
    Over load capacity 150% of rated current for 1 minute, 180% of rated current for 3 seconds
    Control Feature Control mode V/F control;
    Sensorless vector control;
    Communication RS485
    Speed regulation 1:100
    Start torque 150% of rating torque at 1 Hz
    Speed control accuracy ≤±0.5% of rating synchronous speed
    Frequency precision Digital setting: max frequency x± 0.01%;
    Analog setting: max frequency x± 0.2%
    Frequency resolution Analog setting: 0.1% of max frequency;
    Digital setting: 0.01Hz
    Torque boost Automatic torque boost, manual torque boost 0.1%~30.0%
    Interior PID controller Be convenient to make closed-loop system
    Automatic energy save running Optimize V/F curve automatically based on the load to realize power save running
    Automatic voltage regulation (AVR) Can keep constant output voltage when power source voltage varies.
    Automatic current limiting Limit running current automatically to avoid frequent over-current which will cause trip
    Environment Enclosure rating IP 20
    Temperature –10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
    Humidity 5%-95%, without condensation
    Altitude ≤1000m; VFD will be derated if above 1000m
    Impingement and oscillation Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
    Store environment –20℃~ +60℃; no dust, no corrosive gas, no direct sunlight

    Tips: Variable frequency drive overcurrent
    Overcurrent is the most frequent alarm phenomenon of VFD.

    A. Phenomenon

    1. When restarting, VFD trips once speed up. This is a very serious phenomenon of overcurrent. The main reasons are: Load short circuit, mechanical parts stuck, inverter module damaged, and smaller motor torque and so on.
    2. Tripping after power on. This phenomenon cannot be reset. The main reasons are: Module broken, bad driving circuit, and bad current detection circuit.
    3. The tripping is not happening when restart but when accelerating, the main reasons are: Acceleration time setting is too short, current upper limit setting is too small, and the torque compensation (V/F) setting is too high.

    B. Maintenance examples

    1. The VFD displays "OC" once starting.
      Open the cover and don't find any signs of burn out. Online measure IGBT finds no problems. In order to further determine the problem, disassemble the IGBT and measure the seven high-power transistors, the opening and closing are good. When measuring the upper half of the bridge drive circuit, find a circuit is obviously different with the other two. After careful inspection, find an optocoupler A3120 output pin and negative power supply short circuit. Replace it and test again, three circuits are the same. Finally install IGBT and everything running well.
    2. A 3 hp VFD displays "OC" and cannot be reset.
      First check the inverter module but don't find the problem. Second, check the drive circuit and find no abnormal phenomenon. It is estimated that the problem is not here, and may be in the part of over-current signal processing. Remove the circuit sensor and then power on showing everything is normal, so the sensor has been broken. After replaced with a new sensor, the on-load experiment shows everything normal.
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