描述
在接地电阻方面,对PLC也许要求不高,但对DCS一定要在几欧姆以下(通常在4欧姆以下)。模拟量隔离也是非常重要的。在有爆炸危险的地方,应配置本质安全栅。
相同I/O点数的系统,用PLC比用DCS,其成本要低一些(大约能省40%左右)。PLC没有专用操作站,它用的软件和硬件都是通用的,所以维护成本比DCS要低很多。一个PLC的控制器,可以接收几千个I/O点(最多可达8000多个I/O)。DCS的控制器,只能几百个I/O点(不超过500个I/O)。如果被控对象主要是设备连锁、回路很少,采用PLC较为合适。如果主要是模拟量控制、并且函数运算很多,最好采用DCS。DCS在控制器、I/O板、通讯网络等的冗余方面,一些高级运算、行业的特殊要求方面都要比PLC好的多。PLC由于采用通用监控软件,在设计企业的管理信息系统方面,要容易一些。
特别要指出的是,DCS的专用操作站,不是天经地义的。它是由历史原因形成的。DCS厂家如再不开放操作站,与工厂的管理信息系统连网,个别DCS就有从市场中消失的危险。
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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。
GN3-40/2MI v2.2c controller made by ORMEC used
6SM100 K-3000-G-J servomotor Kollmorgen Seidel 6SM 100
GN3-20/1C v2.1b ORMEC Controller
Digifas 7116-L2-DP servo drive with Profibus SEIDEL
GN3-20/2CI v2.2a controller made by ORMEC
SM100 K-2000 brushless servo motor Kollmorgen-Seidel
60WKS-CE240/12-PB analogue,high performance amplifier
Digifas 7206 digital,high-performance servo amplifier
Digifas 7108-L2-DP servo amplifier for Profibus SEIDEL
60WKS-M240/22-PB analogue,high performance amplifier
60WKS-CE240/06-PB analogue,high performance amplifier
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Digifas 7108 digital,high-performance servo amplifier
4KS-M150/25 high performance DC Servodrive SEIDEL
Digifas 7204-LINK servo drive Kollmorgen-Seidel
Digifas 7201 digital servo amplifier Kollmorgen Seidel
6SM71-K-3000-G-J servomotor Danaher Seidel 6SM 71
Digifas 7204(ABB DKL04201)servodrive Seidel USED
SBL6-2200 brushless servo motor,22Nm,560V SEIDEL SMB
Servostar 606-AS//AX2006-AS 6A drive Beckhoff version
Gel 4431 controller made by Lenord+Bauer
Servostar 614-AS digital servo amplifier Kollmorgen
ARS 560-12K METRONIX/COOPER TOOLS Servodrive
MU6V300/15V01 analogue servo amplifier made by MATTKE
Gel 7551.0000.286 controller Lenord+Bauer
Gel 7821.7780 controller Lenord+Bauer
ARS 2105 METRONIX/COOPER TOOLS Servodrive 1ph 5A used
MC2 Motion Coordinator series 2 made by Trio USED
637/K-D6R06-7 stand-alone EUROTHERM Drive module
ISD 300 R15 digital servo amplifier PRIMA ELECTRONICS
Gel 8310BBB0000000 3 axis controller Lenord+Bauer
ISD 300 R10 digital servo amplifier PRIMA ELECTRONICS
DBL5-N-02200-BR2-000-S40 servomotor 22Nm 3000rpm 560V
SBL5-1350 brushless servomotor,13.5Nm,560V SMB
Quin Systems 4 Axis rack assy with 2 axes populated NEW
Gel 88190G0 Operating Terminal Lenord+Bauer NEW
6SM56-L-3000-G brushless servomotor 10Nm,600V SEIDEL
Gel 8140 AABB000 Eco controller Lenord+Bauer Gel8140
Gel8140 AAB0000 Eco controller Lenord+Bauer Gel 8140
ISD 300 T10 digital servo amplifier PRIMA ELECTRONICS
SKA.DDR.PP.090 direct drive motor NEW Motor Power Co.
6SM71-M-3000-G brushless servomotor 22Nm,600V SEIDEL
BHW 12/30/150DC Prima servo amplifier
DBL4-H-00950-BR2-000-S40 servomotor 9.5Nm 6000rpm 560V
Gel 88100D1 Operating Terminal Lenord+Bauer
MS-200-8/16-ENC DC Minispeed drive 8/16A 140V Axor NEW
6SM45-M-3000-G brushless servomotor 1.7Nm,600V SEIDEL
SBL4-0530-30-3-560/BPVS-B Servomotor made by SMB SBL 4
DBK6N00700-BR2-000-S40 servomotor 7Nm 3,000rpm 400V
ACR 8020/PS/E4/D4/S4/A8/1/0 Acroloop motion controller
Gel 8110AAB0300 Eco Controller Lenord+Bauer USED
SM56 M-2000-J brushless servomotor Kollmorgen Seidel
Servostar 343 digital servo amplifier Danaher S34300
Gel 8110A000010 Eco controller Lenord+Bauer
6SM27M-4000 brushless servomotor 0.3Nm,600V SEIDEL
6SM45-M-3000 brushless servomotor 1.7Nm,600V SEIDEL
DBK7N00650-0R2-000-L40 servomotor 6.5Nm 3,000rpm 400V
Servostar 601 digital servo amplifier Kollmorgen-Seidel
PC 10-39 controller made by Robosoft in Belgium
SBL5-1200-30-3-560/VS-B brushless servo motor
Gel 8180A0S0002 Eco Controller Lenord+Bauer USED
Gel 8110A0S0010 Eco Controller Lenord+Bauer USED
Digifas 7003 digital servo amplifier made by SEIDEL