描述
本文通过讲述PLC控制系统在塑料挤压造粒设备改造中的成功应用,概述了该设备的工艺运行特点,阐述在设备运行中对混炼机、喂料机、熔融泵及切粒机等主要部件的联锁控制及对相关回路的PID控制,介绍了控制系统总体方案,硬件构成设计及系统软件的组成和功能特点。
聚乙烯塑料生产中,挤压造粒设备的控制系统是保障设备正常运行和产品质量的关键。各生产线的设备中大多是采用纯硬件搭接的控制系统或配套DCS控制系统。依据挤压造粒设备的控制特点,在近期新建国产挤压造粒设备中,采用PLC控制系统代替了原来由继电器搭接的陈旧古老的控制系统。改造后的PLC控制系统具有功能强劲、性能稳定、易于维护等优点。
改造前,由于进料的不稳定性及产品牌号改变的经常性,手动操作很难使产品达到较理想的水平,且经常出现堵料、防爆膜由于压力过高损坏及其它机械故障等。采用PLC控制系统控制后,改善了设备运行的可靠性及连续稳定性,使产品质量达到较高水平。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
RAD ACE-3600 RNC-Site Gateway 4930020000
RAD FCD-E1A FCDE1/AC/U/V35 2010060000 100-240VAC
RAD LA-140 ATM INTEGRATED ACCESS DEVICE W/SHDSL
RAD LA-140 ATM INTEGRATED ACCESS DEVICE
RAD AIRMUX-200/ODU/F24F/230/EXT/POE WIRELESS ANTENNA
RAD MEGAPLEX 2104 W/5 MODULES MP2104
RAD MAXCESS MX-3000 W/10 MODULES MX3000
RAD COM MASTER-100WL PROTOCOL ANALYZER RC-100WL
RAD IMX-4E1/4/ET 8 Mbps Inverse Multiplexers 442119000
RAD FCD-155/AC/4U/4E1/BEZ Terminal Multiplexer 18016500
RAD AIRMUX-200/ODU/F58/FC/INT ANTENNA MULTIPLEXER
RAD AIRMUX-104/ODUELAB ANTENNA MULTIPLEXER
RAD AIRMUX-104/OD/E1 ANTENNA MULTIPLEXER
RAD AIRMUX-200/ODU-HE/F58F/FC/INT ANTENNA MULTIPLEXER
RAD AIRMUX-104/ODU/E1/EXT WIRELESS ANTENNA MULTIPLEXER
RAD AIRMUX-200/ODU/F54E-SL WIRELESS ANTENNA MULTIPLEXER
RAD AIRMUX-104/OD/T1 WIRELESS ANTENNA MULTIPLEXER
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RAD AIRMUX-104/ODU/E1 WIRELESS ANTENNA FOR MULTIPLEXER
RADWARE WEB SERVER DIRECTOR PRO 5GB 16FE 128MB VER 7.50
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RADWARE WEB SERVER DIRECTOR 2G+8FE 128MB Version 8.10
RADWARE WSD NP WEB SERVER DIRECTOR AS2 5G+16FE ver 7.53
RADWARE WEB SERVER DIRECTOR 2G+8FE 256MB Version 8.16
RADWARE AS2 WSD LINKPROOF CSD POWER SUPPLY VLT130-4110
RADWARE AppDirector 5GB 16FE 256MB WARRENTY
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RADWARE WEB SERVER DIRECTOR 8FE 256MB WSD PRO VER 8.24
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RADWARE WEB SERVER DIRECTOR 8FE 64MB WSD PRO VER 7.30
RADWARE WEB SERVER DIRECTOR 8FE 128MB WSD NP VER 7.56
RADWARE WEB SERVER DIRECTOR NP 5GB 16FE 128MB WSD NP
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HP PROLIANT ML350 E5320 QUAD 2×1.86GHz 440189-421 2GB
COMPAQ ALPHASERVER DS10 DA-PB10A-AC
IBM HS20 Blade Server 8843-PLS Dual Xeon 3.6GHz 2G RAM
IBM HS20 Blade Server 8843-PLV Dual Xeon 3.6GHz 2G RAM
IBM HS20 Blade Server 8843-PST Dual Xeon 3.6GHz 4G RAM
IBM HS20 Blade Server 8843-45G Dual Xeon 3.6GHz 2G RAM
IBM HS20 Blade Server 8843-CTO Dual Xeon 3.6GHz 2G RAM
CROSSBEAM C25 Dual Xeon 3.2GHz 2G RAM NO HDD
SIEMENS RACK FP1 HI7050 W/MFP1,FFP1,E1554 MODULES
SIEMENS RACK FP1 HI7050 W/MFP1,FFP1 MODULES
HP 433027-03 436151-001 1.86Ghz 1066mhz E5320 Quad Core
POWER ONE SPDSUNM-02 SUN P/N 300-2006-03 FROM T2000 DC
Sun SAS Hard Drive 540-6611 73GB MAY2073RC 540-6611-01
SUN 300-1852-04 POWER SUPPLY FROM V215 AC 300-1852
Sun 501-7500 SERVICE PROCESSOR ROHS 501-7500-05 T2000
LOT OF 5 FANS FROM V251 SERVER PULLED
SUN 371-1099-07 PCI TRAY BOARD 371-1099 PULLED T2000
SUN CPU 1.5GHZ PULLED FROM V251 SERVER&371-2609
HP E1697A 155 Mb/s OPTICAL LINE VXI HP 75000 SERIES C
HP E1610A LINE INTERFACE MODULE VXI HP 75000 SERIES C
LOT OF 2 HP E4209A CELL PROTOCOL PROCESSOR HP 75000 C
HP E4208C SCSI DISK MODULE HP 75000 SERIES C
HP E1616A LINE INTERFACE MODULE VXI HP 75000 SERIES C
HP E1697A 155 Mb/s OPTICAL LINE VXI HP 75000 SERIES C
HP E4208C SCSI DISK MODULE HP 75000 SERIES C
LOT OF 2 HP E4209A CELL PROTOCOL PROCESSOR HP 75000 C
HP E4208A SCSI DISK MODULE HP 75000 SERIES C
HP E1610A LINE INTERFACE MODULE VXI HP 75000 SERIES C
HP E1616A LINE INTERFACE MODULE VXI HP 75000 SERIES C
HITACHI 9200 F1F CONTROL UNIT+DFFM5 FIBRE I/F CARD