KE300X Series Mini Frequency Inverter

KE300X small variable frequency drive are designed for common applications of small power OEM market, with various functions of PID, multistage speed, DC braking, Modbus communication and others. Its smaller size can further reduce the installation space (the size is about 15% smaller than similar products).

Features of KE300X Series Mini Frequency Inverter

Sensorless vector control and V/F control

Compact design, less installation space

Standard potentiometer and external LED keypad

Product follows IEC international standards and meets CE certification testing demands.

Set a variety of common functions to meet application needs:

Standard Modbus communication;

Built-in PID;

16 speed control;

Multi-point V/F curve setting can be performed;

Has a multi-function input and output ports, and the switch amount can set the delay time;

It has protection functions such as overcurrent, overvoltage, undervoltage, overtemperature, overload, etc., and can save fault information;

With DC braking, flux braking, and resistance energy braking;

Over-speed, over-voltage stall, and load adaptability.

Applications of KE300X Series Mini Frequency Inverter:

Packing, Food, Textile, Centrifugal Machinery, Carving Machinery, And Wire Cutting

Technical Specifications of KE300X Series Mini Frequency Inverter

Input Input voltage 1AC/3AC 220V±15%, 3AC 380V±15%
Input frequency 47~63Hz
Output Output voltage 0～rated input voltage
Output frequency KE300X: V/f control: 0~3000Hz
Sensorless vector control: 0~300Hz
KE300B: 0~400Hz
Control Features Control mode V/f control(KE300X & KE300B-S2)
Sensorless vector control (KE300X & KE300B-T4)
Torque control (KE300X)
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.
Overload capacity 150% 60s, 180% 10s, 200% 3s
Starting torque 0.5Hz/150% (SVC); 1Hz/150% (V/f)
Speed adjustment range 1:100 (SVC), 1:50 (V/f)
Speed control precision ±0.5% (SVC)
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 inverters, 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 protection 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: 5 on-off inputs (KE300B: 4), 1 high-speed pulse input
1 programmable AI1: 0~10V or 0/4~20mA
Output terminals 1 programmable open collector output: 1 analog output (KE300X: open collector output or high-speed pulse output)
1 relay output
1 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℃

Selection Table of KE300X Series Mini Frequency Inverter

Inverter Model Motor Rated Input Current (A) Rated Output Current (A)
kW HP
KE300X 1AC 220~240V ±15%
KE300X-0R4G-S2 0.4 0.5 5.4 2.3
KE300X-0R7G-S2 0.75 1 8.2 4
KE300X-1R5G-S2 1.5 2 14 7
KE300X 3AC 220~240V ±15%
KE300X-0R4G-T2 0.4 0.5 3.4 2.3
KE300X-0R7G-T2 0.75 1 5 4
KE300X-1R5G-T2 1.5 2 7.7 7

Solution of MICNO KE600 on Belt Conveyor2019-11-19
Solution of MICNO KE300 on CNC Machine2019-11-19
Solution of MICNO KE300 on Oil Driller2019-11-08
Solution of MICNO KE300 on Veneer Peeling2019-11-08
Solution of MICNO KE300A on Air Compressor2019-11-08

Shenzhen MICNO Electric Co., Ltd.provides mini vfd, intelligent hybrid inverter, small ac motor speed control, etc. Contact us to know more.

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