A4H254-8F8T
A4H254-8F8T
A4H254-8F8T
适用于 ACS880 多传动系统中的 ACS880-207 IGBT 柜体安装式供电装置。
IGBT 供电装置将传动的中间直流回路中的三相交流电整流为直流电。中间直流回路提供用于运行电机的逆变器。可将一个逆变器单元（单传动）或多个逆变器单元（多传动）连接到中间电路。
LCL 滤波器是 IGBT 供电装置的重要组成部分，用于抑制交流电压畸变和电流谐波。高交流电感可缓和因频繁开关变频器导致的线电压波形畸变。滤波器的电容部件有效过滤了高频（大于 1 kHz）谐波。
telephone network (dial-up mode) or satellite to achieve ultra-long-distance communication.
Subsystems such as PLC communicate with the Industrial” system through the ModBus protocol interface. The system also supports IEC870-5 over-control protocol.
discussion.
The Flash EPROM inside the PS provides more than 220 functional modules (control algorithm subroutines), in addition to the basic ones specified in the IEC 61131 3 standard
In addition to this content, many powerful and rigorously tested function blocks from actual engineering applications have been expanded. any complex control
The scheme can be realized by the combination of these function blocks.
The function blocks provided by the system mainly include the following categories:
o
Analog processing
o
digital processing
loop regulation
Logical sequence control
c
logic operation
Monitoring function
Collection function.
c
arithmetic operations
c
TCP/IP protocol communication interface
Modbus protocol communication interface
1EC870-5 protocol communication interface (Telecontrol)
4.2 Field Controller PS
Industrial” field controller PS is a special process control station, which is embedded with field bus communication interface for users to use
Fieldbus technology offers very flexible options. Each PS allows to insert 4 fieldbus interface cards (the card type can be different),
Each card is connected to 1 field bus to collect process data and diagnostic information from the bus, the interface card is easy to replace and plug and play
(Plug & Play), and can be plugged and unplugged.
The field controller PS has 
