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KE300X Series Mini Frequency Inverter

KE300X small ac motor speed controlisdesigned 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

Speed adjustment range

1:100 (SVC), 1:50 (V/f)

Speed control precision

±0.5% (SVC)

Carrier frequency

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℃



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