| Item |
AT20 |
| 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 |
G Type:60s for 150% of the rated current,
3s for 180% of the rated current.
P Type：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 |
R S - 4 8 5 |
| 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℃ |