文档介绍：2 2 2
1 1 2
1
1
2
2009年第 5期
总 217期■使用维修
文章编号: 1006 2971 (2009) 05 0017 05
基于 MODBUS通信的
空压站 PLC变频调速控制系统的设计
张还 1 ,刘茂升 2
(1 青岛农业大学机电学院,山东青岛 266109; 2 南车四方机车车辆股份有限公司动力分厂,山东青岛 266031)
摘要:介绍了南车四方机车车辆股份有限公司动力分厂空压站使用 PLC、变频调速技术改造原控制系
统的设计方案,包括控制系统的硬件设计、程序设计和触摸屏的组态设计等。三菱 FX系列小型 PLC通
过 MODBUS通信可以控制 ABB大功率变频器 ACS800的启停、给定参考速度,并可以读取变频器的主
要运行参数。通过现场传感器采集的测量信号可以进行模拟量闭环模糊 P ID调节,可实现空压机的恒
压供气和空压机机组温度的测量及控制。
关键词: PLC;空压站;MODBUS通信;变频器;模糊 P ID
中图分类号: TH45; TP273 文献标识码: A
PLC Con trol System D esign of A pressor Sta tion Ba sed on MOD m un ica tion
ZHANG Huan1 , L IU Mao sheng2
(1 College of M echanical and Electronic Engineering, Q ingdao 266109, China;
2 B ranch of S ifang otive vehicle Co. , L td. , Q ingdao 266031, China)
Abstract: By analyzing the technology transform demands and control p rincip le of the p ressor station, a
detailed design p lot of p ressor station control system based on FX serial PLC, inverter and MODBUS
communication is introduced, including hardware design, p rogram design, munication realization, etc.
Through munication the high power ABB ACS800 inverter can be controlled by the M itsubishi FX
series PLC. Meanwhile, the main running parameters of the inverter can be read back to PLC. The automatic ad
justs of the whole p rocess of air p ressure and temperature by loop s fuzzy P ID is met, and an automatic operati