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KE300A Series Open Loop Vector Control inverter

KE300A Series High Performance Open Loop vector control inverterwidely used for the asynchronousmotor driving where better speed control and low-frequency torque are required . KE300A is built on TI's powerful DSP-based motor control chip, with the adoption of the sensorless current vector control (SVC) and open-loop torque control(TC). KE300A enhances its 1 hp ac motor speed controlreliability to meet the requirements of environment adaptability, customized and industrialized design with more optimized functions, more flexible applications and more stable performance.

Features of KE300A Series Open Loop Vector Control inverter

Excellent design and superb manufacturing process

Powerful hardware speed tracking

With powerful hardware speed tracking, easily responding to the applications with large inertia requiring quick start.

Accurate parameter identification

With an optimized motor parameter autotuning model, providing more precise identification.

Enhanced oscillation suppression

Fast current limiting

With fast current limiting function, easily responding to the conditions with sudden load, greatly reducing the probability of inverter's frequent overcurrent fault.

Dual PID switching

With dual PID switching function, adapting to varied complicated conditions with flexibility

Original energy-saving mode

With an original energy-saving mode, when at a light load, reducing the output voltage automatically, making more efficient energy saving.

Optimized V/F separation

Flux-weakening control

frequency could be up to 3000Hz, easy for the applications requiring high speed.

Powerful PC monitoring software, offer RS485 communication interface, support MODBUS-RTU communication protocol.

Applications of KE300A Series Open Loop Vector Control inverter:

Motor, Mine, Machine Tools, Textile, Oil, Other Machineries

Technical Specifications of KE300A Series Open Loop Vector Control inverter

Item

Technical Index

Specification

Input

Input voltage

1AC/3AC 220V±15%, 3AC 380V±15%, 3AC 660V±15%

Input frequency

47~63Hz

Output

Output voltage

O~rated input voltage

Output frequency

V/f control: 0~3000Hn

Sensorless vector control: 0~300Hn

Control Features

Control mode

V/f control

Sensorless vector control

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, RID setting, etc. These frequency settings can be combined & switched in various modes.

Overload capacity

G model: 150% 60s, 180% 10s, 200% 3sP model: 120% 60s, 150% 10s, 180% 3s

Starting torque

Speed adjustment range

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

Speed control precision

±0.5% (SVC)

Carrier frequency

  1. —16.0kHz, automatically adjusted according to temperature and load characteristics

Frequency accuracy

Digital setting: 0.01 HzAnalog setting: maximum frequency * 0.05%

Torque boost

Automatically torque boost; manually torque boost: 0.1 30.0%

V/f CURVE

Three types: linear, multiple points 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 stoppingDC braking frequency: 0.0Hz—maximum frequency, braking time: 0.0s—100.0s

Jog operation

Jog operation frequency: O.OHz—maximum frequencyJog acceleration/deceleration time: 0.1 s—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 RID

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



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