3 hp (2.2 kW) Single Phase Output VFD

Low cost 3hp single phase output VFD, power your single phase motor with variable speeds, 1-phase 220-240v input, 1-phase 0-220v output.
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3hp (2.2kW) single phase variable frequency drive, 1-phase 220v, 230v, 240v 50Hz/60Hz input, single phase 0-220v output.

Remark: Single phase output VFDs work for L-N-G motors only, not work for split phase input (L1-L2, +N, G) motors.


Basics Model GK3000-1S0022
Capacity 3 hp (2.2 kW)
Shipping weight 4 kg
Dimension 173*135*240 mm
I/O Feature Rated current 15 A
Input voltage Single phase AC 220V, 230v, 240v ±15%
Input frequency 47~63Hz
Output voltage 0~rated input voltage
Output frequency V/f control: 0~3000Hz
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 GoHz VFD 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
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℃

GoHz 3 hp single phase VFD wiring instruction for single phase induction motor
Single phase induction motor has specific wiring requirements in connecting with GoHz 3 hp single phase variable frequency drive to enable your single phase motor running properly, please follow below instructions step by step:
GoHz VFD wiring for single phase induction motor

  1. Single phase motor has one or two capacitors, disassembly them. The VFD output can't have capacitor.
  2. VFD Common Terminal: Running GoHz 3 hp VFD at 50Hz without connecting loads, measuring the output voltages of U-V, U-W, and V-W, two of three voltage values are the same, their common port is VFD's common terminal. Usually the default common terminal is V phase. (The output voltage is a bit higher for the non-common terminal)
  3. Single phase motor has 3 windings and 6 taps. Base on the measuring results of the resistance by a multimeter, the biggest resistance is the secondary winding (Z1, Z2), the smaller resistance is the main winding (U1, U2), the smallest resistance (conducting) is centrifugal switch (V1, V2).
  4. The Coupling End of the single phase motor secondary winding (Z2) and main winding (U2) is connected to GoHz 3hp VFD's output common terminal (V phase).
  5. The Coupling End of the single phase motor main winding (U1) and centrifugal switch (V1) is connected to GoHz 3hp VFD's U phase. The Coupling End of the secondary winding (Z1) and capacitor is connected to the VFD's W phase. In case of the induction motor running in reverse, please exchange the VFD's U phase and W phase.

GoHz 3 hp VFD wiring instruction for single phase motor without disassembling capacitors
Connecting the single phase motor input lines (L, N) to GoHz 3hp VFD's V, U or W terminals. Generally V Phase should be connected, U or W is optional. Refer to below wiring picture:
GoHz VFD wiring for single phase motor without disassembling capacitors


Download GoHz single phase motor wiring instructions (pdf).

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