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KE300 is launched based on the perfect combination of years of experience and advanced drive technology.
According to the perfect understanding to customers’ requirements, KE300 integrates with sensorless vector control, V/f control, torque control and soft start
functions, widely applied in pump & fan, and the applications which require high speed control accuracy, rapid torque response and high performance at low frequency.

Specifications of KE300 are as follows.


Input voltage
1AC 220V±15%,3AC 220V±15%,3AC 380V±15%,3AC 660V±15%
Input frequency

Output voltage
0~Rated voltage
Output frequency
V/f contol:0~3000Hz   SVC:0~300Hz

Control mode
V/f , SVC, Torque 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 combinated & switched in various modes.
Overload capacity
G model: 150% 60s, 180% 10s, 200% 3s
P model: 120% 60s, 150% 10s, 180% 3s 
Starting torque
0.5Hz/150% (SVC),1Hz/150% (V/f)
Speed adjustment range
1:100 (SVC),1:50(V/f)
Speed control precision
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: straight line, multiple point and square type(1.2 power, 1.4 power, 1.6 power, 1.8 power, square)
ACC/DEC mode
Linear/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
Max. 16 steps speed running via built-in PLC or control terminal
Built-in dual 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
Common DC bus
Common DC bus for several inverters, energy balanced automatically 
Torque control
Torque control without PG
Torque limit
“Rooter” feature: limit torque automatically and prevent frequent over-current tripping when running
Wobble frequency control
Multiple triangular-wave frequency control, special for spinning
counting control 
Timing/length/counting control function
Over-voltage & over
currentstall control
Limit current & voltage automatically when running, 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 and has fault automatic reset function 
Input terminals
Programmable DI: 7 on-off inputs, 
1 high-speed pulse input 
2 programmable AI: 
    AI1: voltage -10~10V
    A12: voltage 0~10V or current 0/4~20mA
Output terminals
1 programmable open collector output: 1 analog output (open collector output or high-speed pulse output)
2 relay outputs
2 analog output: 0/4~20mA or 0~10V
Communication terminal
Offer RS485 communication interface, support MODBUS-RTU communication protocol 



LED display

Display frequency setting, output frequency, output voltage, output current, etc. 

Multifunction key

QUICK/JOG key, can be used as multifunction key 

Powerful host software

Support upload, download and real time display between inverter and PC



Ambient temperature

-10℃~40℃, derated 4% when the temperature rise by each1℃ (40℃~50 ℃). 


90%RH or less (non-condensing)


≤1000M: output rated power, >1000M: output derated

Storage temperature


Storage atmosphere

Indoor, without direct sunlight, dust, corrosive gas, combustible gas, oil smoke, vapor, drip, salt, vibration, etc.