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    5 hp (4 kW) VFD, Single Phase Input & Output

    5 out of 5 based on 12 reviews | Write a review
    Low cost 5 hp VFD, 1 phase for single phase AC motor speed controls, 220V - 240V 25 amps, manufacturer direct sale.
    SKU: GK3000-1S0037
    Availability: In stock
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    Delivery date: 2-3 days

    5 hp variable frequency drive, 4 kW, 1 phase 220V - 240V for single phase AC motor, manufacturer direct sale.


    Basics Model GK3000-1S0037
    Capacity 5 hp (4 kW)
    Shipping weight 8 kg
    Dimension (H*W*D) 330*200*200 mm
    I/O Feature Rated current 25 A
    Input voltage single phase AC 220V±15%
    Input frequency 47~63Hz
    Output voltage 0~rated input voltage
    Output frequency 0~1000Hz
    Over load capacity 150% of rated current for 60s, 180% of rated current for 10s, 200% of rated current for 3s
    Control Features Control mode V/F, Sensorless vector control (SVC), Speed sensor vector control (FVC)
    Operation command mode Keypad control, Terminal control, Serial communication control
    Frequency setting mode Digital setting, analog setting, pulse frequency setting, serial communication setting, multi-step speed setting & simple PLC, PID setting, etc. These frequency settings can be combined & switched in various modes.
    Start frequency 0.40Hz~20.00Hz
    Speed adjustment range 1:50
    Carrier frequency 1.0-16.0kHz, automatically adjusted according to temperature and load characteristics
    Frequency accuracy Digital setting: 0.01Hz
    Analog setting: Maximum frequency * 0.05%
    Torque boost Automatically torque boost; manually torque boost: 0.1%~30.0%
    V/f curve Three types: linear, multiple point and square type (1.2 power, 1.4 power, 1.6 power, 1.8 power, square)
    Acceleration/deceleration mode Straight line/S curve; four kinds of acceleration/deceleration time, range: 0.1s~3600.0s
    Jog operation Jog operation frequency: 0.0Hz~maximum frequency
    Jog acceleration/deceleration time: 0.1s~3600.0s
    Simple PLC & multi-step speed operation It can realize a maximum of 16 segments speed running via the built-in PLC or control terminal.
    Built-in PID Built-in PID control to easily realize the close loop control of the process parameters (such as pressure, temperature, flow, etc.)
    Automatic voltage regulation Keep output voltage constant automatically when input voltage fluctuating
    Control Function Common DC bus Common DC bus for several VFDs, energy balanced automatically
    Torque control Torque control without PG
    Torque limit "Rooter" characteristics, limit the torque automatically and prevent frequent over-current tripping during the running process
    Wobble frequency control Multiple triangular-wave frequency control, special for textile
    Timing/length/counting control Timing/length/counting control function
    Over-voltage & over-current stall control Limit current & voltage automatically during the running process, prevent frequent over-current & over-voltage tripping
    Fault protection function Up to 30 fault protections including over-current, over-voltage, under-voltage, overheating, default phase, overload, shortcut, etc., can record the detailed running status during failure & has fault automatic reset function
    Input/output terminals Input terminals Programmable DI: 7 on-off inputs, 1 high-speed pulse input 2 programmable AI:
    AI1: 0~10V or 0/4~20mA
    A12: 0~10V or 0/4~20mA
    Output terminals 1 programmable open collector output: 1 analog output (open collector output or high-speed pulse output)
    2 relay output
    2 analog output: 0/4~20mA or 0~10V
    Communication terminals Offer RS485 communication interface, support MODBUS-RTU communication protocol
    Human machine interface LED display Display frequency setting, output frequency, output voltage, output current, etc.
    Multifunction key QUICK/JOG key, can be used as multifunction key
    Environment Ambient temperature -10℃~40℃, derated 4% when the temperature rise by every 1℃ (40℃~50℃).
    Humidity 90%RH or less (non-condensing)
    Altitude ≤1000M: Output rated power, >1000M: Output derated
    Storage temperature -20℃~60℃

    Note: The single phase motor should Not be adjusted to run based on a lower frequency than 80% of its rated frequency for along time, otherwise the motor may fail.


    4000W Single Phase VFD Details
    Tips: Six attentions of installing VFD in automatic control system

    1. For the frequency given signal should be used as far as possible 4-20mA international standard signal. Should make sure the signal line shield ground, to avoid the interference signal into the VFD. The production site has an interference signal, the interference signal will affect the stability of the control, so need to use input filter, and set its range to be 0.00-5.00s. If using VFD built-in PID function should use the feedback filter to increase the control stability of the built-in PID, the setting range is 0.0-60s. However, it should be noted that the filter time is set too long, the control is stable, but the system response is worse; the filter time is set too short, the system response is fast, but the control is unstable. So it should be based on the actual scene to make adjustments.
    2. To set the corresponding manual, automatic switching operating function. Optional manual, automatic, forced manual functions of manual operator. If necessary, could also consider the redundant operation function of the current and voltage setting, that is, the VFD frequency setting signal use current setting in normal, using voltage setting in abnormal manual operation. That is, add a potentiometer for setting g the VFD frequency, so the VFD frequency reference signal has two types, current signal and voltage signal. Because there are two types of frequency setting signals input in the VFD, increasing its redundancy degree.
    3. Must set the "overhaul switch", that is, set the "on-site overhaul switch" next to the operating equipment, when switch it to the "overhaul" position, equal to cut off the VFD running signal circuit. If someone misuse, the equipment can't run, to ensure that the safety of mechanical equipment maintainer.
    4. Make full use of the VFD input and output control terminals function, to carry out some alarm and interlock function, to reduce wiring and improve reliability.
    5. For single or simple control system, can take full advantage of the VFD built-in PID control function to reduce the control system equipments and reduce investment.
    6. Some VFD have input terminals R0, T0 of control power. So should connect control power to VFD R0, T0 side in front of the main power supply. So that the VFD still has a display function after the trip, in order to analyze the cause of the malfunction and take countermeasures.

    Running a single phase motor with VFD

    In this video, ATO will show you details about running a single phase motor on a VFD. It's important to note that there are two wiring methods for single phase motor connecting to ATO single phase VFD: wiring of removing motor capacitor & wiring of keeping motor capacitor. At first, you should choose the wiring method you needed, and then set basic parameters step by step.

    Existing reviews of 5 hp (4 kW) VFD, Single Phase Input & Output
    From: ELLIOT | Date: 25/06/2024
    Was this review helpful? Yes No (0/0)
    Question about GK3000-1S0037
    I have two of these drives and I'm trying to run a three phase motor. Will it work or this can only do single phase in and single phase out? Thank you much.
    From: Cosmin | Date: 21/02/2024
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, it can output 3 phases. If the process meets other problems you can contact our after-sales:
    Single phase VFD diagram
    We are currently using this wearing diagram. With u we are at 6.75 amps with v we are at 22 amps and with w we are at 35 amps, which is too many amps.
    From: blanche | Date: 07/06/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    We think that after you removed the cable of the single-phase motor and changed it to three wires, the internal winding structure of the motor was unbalanced and the current of phase C was too high.
    We suggest that you restore the internal wiring and capacitors of the single-phase motor to the original, and then you only need to connect the 2 wires of the single-phase motor to U,W of the VFD output terminal.
    Please reset the parameters according to the parameter setting instructions of the attached single-phase motor, and test again.
    Hope my explanation is able to assist you. Please feel free to let us know if you have any further questions.
    Do you have electrical plug wiring picture of VFD?
    I have one question. We received the pump and the VFD.
    I checked in the lab that we have the electrical plug NEMA 6-30, 208VAC, 30A single phase, with three wire.
    As per the instruction manual to wire the VFD on 220V single phase, the picture (page 30) showed connection for only two wires.
    Do you have the wire schematic to wire on the electrical plug NEMA 6-30, 208VAC, 30A single phase? I appreciate if you can help.
    In advance, thank you for your time and help.
    From: ronnie | Date: 06/06/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The VFD models you purchased are GK3000-1S0022 and GK3000-1S0037. The power supply is connected to the two terminals of the reserved screws in the input terminals R, S, T.
    The terminal with the screw removed is not used, and the terminal marked E is the ground wire.
    Any two terminals of output terminals U, V, W can be connected to a single-phase 220V motor.
    You can refer to this demo video:
    Hope my explanation is able to assist you. Please feel free to let us know if you have any further questions.
    Questions about 5HP VFD
    Is the internal fan on the 5HP VFD supposed to run all the time the pump motor is running? Thank you.
    From: Jaeden | Date: 03/03/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    As long as the 5HP VFD is running, the fan will automatically run; when the VFD is stopped, the fan will also stop. So if the VFD is running, but the fan is not, then there is something wrong with the fan.
    Just want to be absolutely clear before wiring everything up.
    Keep the R, S, and T terminals wired how it originally came, got it. And to confirm, the green wire going internally into the VFD IS grounded? So no need to attach anything to the E ground terminal? For the green and red wires, am I correct in saying you've attached the green wire to the white wire coming from the power supply cable, and the red wire to a black wire? Then these 2 wires have a 2 prong plug attached that goes into a wall outlet? And what's the green wire resting on the side of the VFD do?
    From: Randolph | Date: 27/07/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, please keep the R, S and T terminals wired the way they are. The green wire is N and the red L, you can see the number on the cable. The green and red wires (L, N) are directly connected to your 120V input power supply, and AC power does not need to distinguish between the live and neutral wires. The E on the terminal can be connected to the input power ground wire G.
    Questions about 1-phase VFD
    Do I unhook the start/run capacitors when connecting your 1-phase VFD to my 1-phase motor?
    From: Patty | Date: 09/01/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No, you can keep the capacitors.
    I am interested in your single phase VFD
    I am interested in the single phase output drives. Can I operate more than one fan motor on one drive?
    From: Palli | Date: 04/01/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, you can. But run all at the same instant from the drive.
    My question about single VFD
    What communications can your 1-phase drive handle? Analog input? Can it be directly communicated with by most PLCs?
    From: Rizzo | Date: 31/10/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    You can use the analog signal of the PLC.
    Good single phase VFD
    Do you offer external potentiometer for external speed controls for your single phase drive?
    From: Agrawal | Date: 03/06/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Our single VFD has a potentiometer beside its operation panel, and also you can install external one if needed.
    Good 5hp single phase VFD
    For your 5hp single phase frequncy drive, does this keep the motor in it’s torque capability at low speed?
    From: Irene | Date: 20/04/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    There are constant torque VFDs, but for the 5hp single phase VFD, it's not, the torque will reduce along with the speed.
    Dominican Republic representative
    Do you have a representative in the Dominican Republic where I can purchase this 5hp VFD for single-phase motor use?
    From: Oscar | Date: 27/04/2018
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No, but you can purchase the VFD from us directly, ATO can ship it internationally, free of charge.
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