描述
PLC控制系统的安全设计方法
尽管PLC的运行是安全、可靠的,作为一个系统来说,稳定可靠仍然是不可忽视的问题.系统安全设计要充分利用PLC的特点,使PLC的运行能真正达到安全、可靠。
(1)硬件保护。主要包括:联锁保护、限位保护和急停保护等。
(2)软件保护。主要包括:联锁保护、限位保护、限时保护和自检保护等。PLC是利用存储程序进行控制,用存储的程序进行安装保护,也可以使其只执行正确的操作,而拒绝错误的命令。软件保护主要利用自检信息及时发现隐患,清除故障;也可针对工程的特点,自编诊断程序而排除故障,以确保PLC可靠、稳定、安全运行。
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
Reliance 45C360 AutoMate Analog Output **XLNT**
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*NEW* Reliance Rectifier Stack 86466-58S
Reliance Electric Process Controller 0-56313-1 (2863)
1 NIB RELIANCE ELECTRIC 61C542 ANALOG INPUT 16 CHANNEL
RELIANCE ELECTRIC 0-56921-512-AAG NSPP 056921512AAG
RELIANCE 0-51847-004 VLDE
RELIANCE 0-52806-1 TLOB
Reliance 0-51831-7
Reliance 18C306
RELIANCE ELECTRIC 0-52853 NSPP 052853
RELIANCE ELECTRIC 0-5282-4 NSPP 052824
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Reliance 5V4150
RELIANCE ELECTRIC H-6100-Q-K00AA USPP H6100QK00AA
NIB RELIANCE ELECTRIC 0-54341 PC BOARD 1200A M RECT
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20 HP RELIANCE ELECTRIC VARIABLE FREQUENCY CONTROLLER
RELIANCE ELECTRIC MODEL TR SUPER RPM DC MOTOR 20 HP
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RELIANCE ELECTRIC 0-51446 NSFP 051446
REMANUFACTURED RELIANCE FIELD SUPPLY 0-51893-4 51893-4
1 NIB RELIANCE ELECTRIC 0-57407-4J 0574074J PROCESSOR
MODULE
25hp reliance motor
1 NIB RELIANCE ELECTRIC 0-57050 057050 PRINTED CIRCUIT
RELIANCE ELECTRIC 0-52808-2 NSPP 0528082
RELIANCE ELECTRIC 1AC2001U NSFP 1AC2001U
RELIANCE ELECTRIC 0-51902 USPP 051902
RELIANCE ELECTRIC 11C177S USPP 11C177S
RELIANCE ELECTRIC 0-51865-14 USPP 05186514
RELIANCE ELECTRIC 404745-D NSFP 404745D
RELIANCE LCU-4000 4000A 600VAC CURRENT LIMITING FUSE
RELIANCE 0-51831-6 CVTG
Electro-Craft Reliance M1030 1030-00-036 Servo Motor *J
RELIANCE ELECTRIC 0-51383-2 NSPP 0513832
RELIANCE ELECTRIC 809.5000HTP NSPP 8095000HTP
RELIANCE ELECTRIC 410403-38AW USPP 41040338AW
Reliance 1/3 HP, 3450 RPM, Model P48G1306N-EV, 3 Ph
RELIANCE ELECTRIC 0-51851-4 USPP 0518514
RELIANCE ELECTRIC 413327-W NSFP 413327W
RELIANCE ELECTRIC 18C-205 USPP 18C205
RELIANCE ELECTRIC 6MDDN-017102 NSPP 6MDDN017102
Reliance 0-52806-1
Reliance 0-49011
Reliance 0-49013-4
Reliance 0-49023
RELIANCE ELECTRIC 0-52860-2 NSPP 0528602
Reliance 0-51902-5 PC Board
1 NIB RELIANCE ELECTRIC 0-60044 060044 LINE SYNC BOARD
RELIANCE AC POLYPHASE MOTOR 30 HORSEPOWER
New RELIANCE 57C413B 57413-3E 64K MEMORY MODULE
Reliance 0-48673-1 104/105 Regulator Board
Reliance AutoMax 57C329C 57C329 LNC
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RELIANCE ELECTRIC 0-52821 USPP 052821
25 hp reliance electric motor
50 HP Reliance STD Efficient Motor 460 Volts Item #8221
25 HP RELIANCE VAN DORN 3 PHASE ELECTRIC MOTOR 324TSC
75 HP USED RELIANCE ELECTRIC XE MOTOR 365T FRAME
NIB RELIANCE ELECTRIC 0-51865-1 0518651 PRINTED CIRCUIT
1 NIB RELIANCE ELECTRIC 101165-145R 101165145R CIRCUIT
Reliance 0-49020-4
Reliance Control Servo Amplifier 3RA-29030 704323-21s
NIB RELIANCE ELECTRIC 86466-60S 8646660S RECTIFIER STAK
RELIANCE ELECTRIC 0-57419 USPP 057419