KE300A Series Open Loop Vector Control Inverter

KE300A Series High Performance Open Loop Vector Control Inverter widely 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 reliability to meet the requirements of environment adaptability, customized and industrialized design with more optimized functions, more flexible applications and more stable performance.

Features
Specifications
Selection table
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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	Input frequency	47~63Hz
Output	Output voltage	O~rated input voltage
	Output frequency	V/f control: 0~3000Hn
	Output frequency	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% 3s P model: 120% 60s, 150% 10s, 180% 3s
	Starting torque	0.5HZ/150% (SVC); IHz/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: 0.01 Hz 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 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 stopping DC braking frequency: 0.0Hz—maximum frequency, braking time: 0.0s—100.0s
	Jog operation	Jog operation frequency: O.OHz—maximum frequency Jog 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