KE300X Series Mini Frequency Inverter

KE300X mini Frequency inverters 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
Specifications
Selection table
Classic Case
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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	Input frequency	47~63Hz
Output	Output voltage	0～rated input voltage
Output	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.
Human machine interface	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

KE300X Series Mini Frequency Inverter model selection

Inverter Model	Motor		Rated Input Current (A)	Rated Output Current (A)
Inverter Model	kW	HP	Rated Input Current (A)	Rated Output Current (A)
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