AT20 series General Purpose Inverters-Nietz Electric Co.,Ltd

Features

● Excellent Control Performance
Below 2.2KW (including) can support either V/F control or vector control; Above 3.7KW (including) is vector control and can add PG card when customer tell they need.
● Optimized Structural Design
Size is reduced, saving the installation space for users;
Below 2.2KW (including) support side-by-side rail mounting.
● Various in Product Configuration and Interface, Powerful in Function
With standard built-in 485 communication interface and various input terminals and various output terminals;
Above 7.5KW (including) has external keyboard interface to better suit the applications;
30KW (including) ~ 160KW (including) inverter can optionally (just have when customer tell they need) be equipped with built-in DC reactor to improve its power factor; Below 37KW (including) with standard built-in brake unit; 45KW(including)~110KW(including), optional (just have
when customer tell they need) built-in brake unit.
● Various Installation Methods
Below 5.5KW (including) support rail mounting and wall mounting;
7.5KW (including) -160KW (including) support wall-mounting;
Above 185KW (including) support floor mounting and wall mounting.
● Easy to Use and Maintain
The fan can be disassembled and assembled independently for easy maintenance;
Optional normal LED external keyboard and LCD keyboard (above 7.5KW (including)) to meet different application needs.
● Integrate Various Product Features to Meet Diverse Application Needs
Simple PLC, multi-speed control, built-in PID, torque control, multi-point V/F curve,inverter not stop work when face instant power failure, etc.

Specifications

Item		Specifications
Basic function	Control Mode	V/F control Sensorless flux vector control (SVC)（Above 3.7K） Close-loop vector control (FVC)（Above 3.7KW）

	Maximum frequency	0～600Hz
	Carrier frequency	0.5kHz～8kHz The carrier frequency is automatically adjusted based on the load features.

	Input frequency resolution	Digital setting：0.01Hz Analog setting: Maximum frequency x 0.025%

	Start torque	G Type：0.5Hz/150%(SVC)； P Type：0.5Hz/100%

	Speed range	1:100(SVC)
	Speed stability accuracy	±0.5%(SVC)
	Overload capacity	GType:60s for 150% of the rated current,3s for 180% of the rated current. PType：60s for 120% of the rated current,3s for 150% of the rated current.


	Torque boost	Auto-boost; Customized boost: 0.1%~30.0%

	V/F Curve	Straight-line V/F curve Multi-point V/F curve N-power V/F curve (1.2-power, 1.4-power, 1.6-power, 1.8-power, square)


	V/F separation	2 types: complete separation; half separation
	Ramp Mode	Straight-line ramp. Four groups of acceleration/deceleration time with the range of 0.00`6500.0s

	DC braking	DC braking frequency：0.00Hz~Maximum frequency Braking time：0.0s~36.0s Braking action current value：0.0%~100.0%


	JOG control	JOG frequency range:0.00Hz~50.00Hz。 JOG acceleration/deceleration time: 0.0s~6500.0s。

	Simple PLC、Multiple preset speeds	It implements up to 16 speeds via the simple PLC function or combination of terminal states
	Onboard PID	It realizes process-controlled closed loop control system easily
	Auto voltage regulation（AVR）	It can keep constant output voltage automatically when the mains voltage changes
	Overvoltage/overcurrent stall control	The current and voltage are limited automatically during the running process so as to avoid frequent tripping due to over voltage/over current
	Rapid current limit	It helps to avoid frequent over current faults of the AC drive.
	Torque limit and control	It can limit the torque automatically and prevent frequent over current tripping during the running process. Torque control can be implemented in the FVC mode.
Individualized functions	High performance	Control of asynchronous motor are implemented through the high-performance current vector control technology
	Rapid dip ride through	The load feedback energy compensates the voltage reduction so that the AC drive can continue to run for a short time
	Rapid current limit	It helps to avoid frequent over current faults of the AC drive.
	Timing control	Timing range: 0.0Min～6500.0Min
	Communication methods	RS - 485
Running	Command source	Operation panel/Control terminals/Serial communication port You can perform switchover between these sources in various ways.

	Frequency source	There are ten frequency sources. Digital setting, analog voltage setting, analog current setting, pulse setting, serial port setting. You can perform switchover in various ways.


	Auxiliary frequency source	There are ten auxiliary frequency sources. It can implement fine tuning of auxiliary frequency and frequency synthesis.

	Input terminal	Standard：4 digital input terminals（Below 5.5KW）/6 digital input terminals（Above 7.5KW) 1 analog input terminal（Below 5.5KW）/2 analog input terminals（Above 7.5KW）; 1 voltage input (only support for 0~10V, above 7.5KW)，1 voltage input(0~10V) or current input (4～20mA)


	Output terminal	1 High-speed pulse output terminal (Open-collector)（Above 3.7KW） 1 replay output terminal （Below 5.5KW）/2 replay output terminals（Above 7.5KW） 1 analog output terminal（3.7KW~5.5KW）/2 analog output terminal（Above 7.5KW）， Support for 4~20mA current output or 0~10V voltage output


Display and operation panel	LED display	It displays the parameters
	Key locking and function selection	It can lock the keys partially or completely and define the function range of some keys so as to prevent mal-function.
	Protection mode	Motor short-circuit detection at power-on, input/output phase loss protection, over current protection, over voltage protection, under voltage protection, overheat protection and overload protection
Environment	Installation location	Indoor, free from direct sunlight, dust, corrosive gas, combustible gas, oil smoke, vapor, drip or salt.
	Altitude	Lower than 1000m
	Ambient temperature	－10℃~＋40℃（de-rated if the ambient temperature is between 40℃~50℃）
	Humidity	Less than 95%RH，without condensing
	Vibration	Less than 5.9m/s2（0.6g）
	Storage temperature	－20℃~＋60℃

Application

Vector control platform products, Powerful and excellent performance, Can be widely used in small and medium power applications, such as food machinery, plastic machinery, ceramic equipment, petroleum machinery, cable equipment, air compressors, CNC, woodworking machinery, textile machinery, printing and packaging equipment, chemical equipment, environmental protection equipment, Conveying equipment, etc.

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