Frequency inverters are commonly controlled through basic methods such as:
- Control via the panel on the inverter
- Control via PLC or external ON/OFF circuits
- Control via HMI or industrial communication networks"
1. Frequency operation, control via the keyboard.
Settings:
00-20 = 0 (frequency change by the keyboard)
00-21 = 0 (operation change by the keyboard)
00-22 = 0 (stop)
01-12 = 10 (acceleration time 10s)
01-13 = 10 (deceleration time 10s)
Note: The acceleration and deceleration time settings depend on the load characteristics.
2. Operation of external push button, frequency change on the external potentiometer.
Settings:
00-20 = 2 (frequency change by analog input)
00-21 = 1 (operation by external signal)
03-00 = 1 (select AVI as the frequency command)
00-22 = 1 (free stop)
01-12 = 6 (acceleration time 6s)
Note: The acceleration and deceleration time settings depend on the load characteristics.
3. External control operation, multiple speed levels
Settings:
00-20 = 0 (adjust Master frequency by the keyboard)
00-21 = 1 (operation by external signal)
02-01 = 1 (frequency command 1)
02-02 = 1 (frequency command 2)
02-03 = 1 (frequency command 3)
02-04 = 1 (frequency command 4)
4. Operation via RS485 communication port.
Settings:
00-20 = 1 (frequency change by RS485 communication)
00-21 = 2 (operation by RS485 communication)
09-00 = 1 (device address = 1)
09-01 = 9.6 (communication speed 9600bps)
09-04 = 2 (protocol ASCII, 7, E, 1)
Related registers: (refer to Chapter 12 – VFD2000 User Manual)
Note:
- When controlling communication with a computer, an IFD6530 or IFD6500 converter is required.
- The same communication protocol must be declared between the Master and Slave devices (09-01, 09-04).
An inverter, also known as an AC motor controller, is a device used to control the speed and torque of both asynchronous and synchronous motors.
Frequency inverter parameters are typically organized by functional groups. They are displayed in two formats: - Quick Setup - Full Setup Các thông số có thể được cài đặt theo 2 cách: - Thao tác trên bàn phím của biến tần - Thông qua cổng truyền thông RS485
During operation, there are many factors that can cause errors affecting the inverter, such as temperature, installation environment, operating load, and operation, etc. Therefore, many errors occur in the inverter. The following are common inverter errors that are described below:
Inverters with integrated PLC functions are very useful in simple control systems. They help save investment costs, reduce connection labor, and simplify the control system.
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