(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    7.5 hp (5.5 kW) VFD, Single Phase Input & Output

    5 out of 5 based on 6 reviews | Write a review
    Favorable price 7.5 hp VFD, 1 phase for single phase AC induction motor, high variable speed performance, 220V - 240V 32 amps, manufacturer direct sale.
    SKU: GK3000-1S0055
    Availability: In stock
    Free Shipping Worldwide
    Delivery date: 2-12 days

    7.5 hp variable frequency drive, 5.5 kW, 1 phase 220V - 240V for single phase AC motor, manufacturer direct sale.


    Basics Model GK3000-1S0055
    Capacity 7.5 hp (5.5 kW)
    Shipping weight 9 kg
    Dimension 330*200*200 mm
    I/O Feature Rated current 32 A
    Input voltage single phase AC 220V±15%
    Input frequency 47~63Hz
    Output voltage 0~rated input voltage
    Output frequency V/f control: 0~500Hz
    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 control
    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.
    Starting torque 1 Hz/150%
    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
    DC braking DC braking when starting and stopping
    DC braking frequency: 0.0Hz~maximum frequency, braking time: 0.0s~100.0s
    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.
    Tips: Variable frequency drive functions in air conditioning

    1. In air conditioning, VFD can make the compressor motor speed continuously adjustable, and the speed is based on indoor air conditioning load proportional change. When the room needs rapid cooling (or rapid warming), air conditioning load will increase, the compressor speed up, and the cooling (or heating) capacity will proportion increases. And then after reaches the set temperature, the system will operate in low-speed to maintain room temperature.
    2. VFD air conditioner uses electronic expansion valve to control the flow, and its outdoor micro processor controls the valve opening degree based on the expansion valve inlet and outlet, the compressor in the air pipe at the temperature sensor to collect information, which can change the flow of refrigerant at any time. The speed of the compressor corresponds to the opening degree of the expansion valve, so that the capacity of the evaporator can be maximized. At the same time, because of using electronic expansion valve as a throttle element, the device will not stop when defrost. It uses compressor exhaust heat to the indoor, and then sends the remaining heat to the outside to melt the frost on heat exchanger fin.
    3. VFD air conditioner will gradually replace the traditional fixed speed air conditioner, and becoming the main stream of air conditioning control technology. The frequency conversion technology has been changed from AC type to DC type, and the control technology has been developed from PWM (Pulse Width Modulation) to PAM (Pulse Amplitude Modulation). The speed of the compressor with PWM control is limited by the upper limit speed, generally not more than 7,000/min, and the compression speed of PAM control mode can be increased for about 1.5 times, which greatly improves the refrigeration capacity at refrigeration and low temperature.

    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 7.5 hp (5.5 kW) VFD, Single Phase Input & Output
    7.5hp (5.5kW) VFD connection problem
    When connecting a 1-phase VFD to a 1-phase motor, can I remove the start/run capacitor?
    From: Mahem | Date: 25/03/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No, you can keep the capacitor.
    7.5 hp single phase VFD drive
    I want to purchase your 7.5 hp 1 phase VFD, but my motor has 2 starting capacitor and 1 running capacitor? Does that work?
    From: Wilson | Date: 28/04/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, it does not matter, your can remove capacitors or keeping them, the drive will run the motor effciently.
    How to choose a VFD?
    I have a 3 hp 115 volt 30 amp motor that I need a VFD for. What are my options for this application?
    From: Sneaky | Date: 09/05/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    We provide 1 phase drive, but only for 1 phase, 220/230/240V motors. Don't provide for 115V motors.
    The use effect of VFD
    I've been in the electrical business for a long time and I'm very pleased to see your single phase output VFD. How can the starting torque be compared when using the drive VS the same motor starting with its original capacitors? Taking this to a bad case like starting a piston compressor, would it work?
    From: Randrsn | Date: 31/08/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    If you use our single phase output VFD, the starting torque of the single phase motor will be smaller than the original motor. Because the starting voltage and frequency will be smaller when the VFD just starts the motor. So for such a piston compressor to start, it would not work.
    We are looking for a VFD. Can you give us some advice?
    We are looking for single phase input and output VSD for single Phase fan 230VAC, 0.4kW. Could you please give me advice?
    From: Terepocki | Date: 24/01/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, recommended drive model: GK3000-1S0007, 1 hp (0.75 kW) power capacity.
    VFD problem.
    I have installed a GK3000 single phase VFD, a 3 phase motor is connected. The VFD boots up and there are no alarms. When I run the VFD the display shows the output frequency and output voltage but the motor does not turn and there is no voltage outputting to the motor.
    From: Danie | Date: 25/05/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    1. Please provide us with a video to show the problem you describe. The video should show that the VFD is running, but there is no output voltage.
    2. You can set the VFD parameters: P3.01=10 (restore the factory parameters), run the VFD with no load, and when the frequency runs to 50/60HZ, use a multimeter to measure whether the output terminals U-V and V-W of the VFD have output voltage.
    Write your review for 7.5 hp (5.5 kW) VFD, Single Phase Input & Output
    • Only registered users can write reviews
    • Bad
    • Excellent
    Customers who bought this item also bought

    Pressure Sensor for Air/Water/Oil, 4-20mA/0-5V/RS485 Output

    SKU: ATO-PRES-P300
    This series of pressure sensors use a high-performance silicon piezoresistive pressure core as core element. The internal ASICs convert the mV signal into a standard current (4-20mA/0-20mA), voltage (0-5V/1-5V/0-10V) or RS485 signal. Pressure sensor with stainless steel sealing structure has small size, light weight, high anti-vibration and anti-shock performance, measuring range -0.1~100MPa/ -1~1000bar/ -14~14503psi, medium temperature -40~+60℃ (-40~+140℉), for air/water/oil pressure measurement.

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

    SKU: GK3000-1S0037
    Low cost 5 hp VFD, 1 phase for single phase AC motor speed controls, 220V - 240V 23 amps, manufacturer direct sale.

    3 hp (2.2 kW) VFD, Single Phase Input & Output

    SKU: GK3000-1S0022
    Cheap 3 hp VFD, 1 phase for single phase AC induction motor, good variable speed performance, 220V - 240V 19.2 amps, manufacturer direct sale.