福建中立恒自动化设备有限公司
目前,世界上有200多个厂家生产可编程序控制器产品,厂家有德国的西门子,美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙,法国的施耐德等。
可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面:
(1)向小型化、专用化、低成本方向发展
20世纪80年代初,小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展,新型器件大幅度的提高功能和降低价格,使PLC结构更为紧凑,功能不断增加,将原来大、中型PLC才有的功能移植到小型PLC上,如模拟量处理、数据通讯和复杂的功能指令等,但价格不断下降,真正成为继电器控制系统的替代产品。
(2)向大容量,高速度方向发展
大型PLC采用多微处理器系统,有的采用32位微处理器,可同时进行多任务操作,处理速度提高,特别是增强了过程控制和数据处理的功能。另外,存储容量大大增加。
(3)与计算机联系密切
从功能上看,PLC不仅能完成逻辑运算,且计算机的复杂运算功能在PLC中也进一步得到利用,从结构上看,计算机的硬件和技术越来越多地应用到PLC;从语言上看,PLC己不再是单纯用梯形图语言,而且可用多种语言编程,如类似计算机汇编语言的语句表,甚至可直接由计算机语言编程;在通讯方面,PLC与计算机可直接相连并进行信息传递。
(4)发展多样化
可编程序控制器发展的多样化体现在3个方面:产品类型、编程语言和应用领域。
(5)模块化
PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态,这使得PLC的系统功能进一步增强,控制系统设计进一步简化。
(6)网络与通讯能力增强
计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强,使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性,致使网络的应用有普遍化的趋势。
(7)多样化与标准化
生产PLC产品的各厂家都在大力度地开发自己的新产品,以求占据市场的更大份额。因此产品向多样化方向发展,出现了欧、美、日多种流派。与此同时,为了推动技术标准化的进程。一些国际性组织,如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准,如对各种类型的产品作一定的归纳或定义,或对PLC未来的发展制定一种方向或框架。
(8)工业软件发展迅速
与可编程序控制器硬件技术的发展相适应,工业软件的发展非常迅速,它使系统应用更加简单易行,大大方便了PLC系统的开发人员和操作使用人员。
可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分:一是与被控设备相连接的接口电路,另一部分是输出的映像寄存器。
PLC运行时CPU从输入映像寄存器读取输入信息并进行处理,将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成,输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出,以驱动电磁阀、接触器、指示灯等被控设备的执行元件。
以下链接皆有货
SIEMENS 39SDM024DCCBN DISCRETE MODULE 0.23AMP 24VDC 9.96MA INPUT 19-30VDC RANGE
Siemens 3LD2022-0TK11
Siemens 3LD9287-3C
Siemens 3LF0 122 1AA083 / 3LF0 122-1AA8-3 / package switch / cam switch
Siemens 3LF0 122 1AA083 / 3LF0 122-1AA8-3 / Switch Package / Camswitch
Siemens 3LF0 122 2PC00 / 3LF0 122-2PC00 / package switch / cam switch
Siemens 3lf0 122 2pc00 / 3lf0 122-2pc00 / Switch Package / Camswitch
Siemens 3LF0 122 2PF00 / 3LF0 122-2PF00 / package switch / cam switch
Siemens 3LF0 122 2PF00 / 3LF0 122-2PF00 / Switch Package / Camswitch
Siemens 3LF0 122 4AD00 1/ 3LF0 122-4AD00-1 / package switch / cam switch
Siemens 3lf0 122 4ad00 1/ Paket Switch Camswitch
Siemens 3LF0 122 4EB00 / 3LF0 122-4EB00 / package switch / cam switch
Siemens 3lf0 122 4eb00 / 3lf0 122-4eb00 / Switch Package / Camswitch
Siemens 3LF0 122 6HB00 / 3LF0 122-6HB00 / package switch / cam switch
Siemens 3LF0 122 6HB00 / 3LF0 122-6HB00 / Switch Package / Camswitch
Siemens 3NA3480
Siemens 3NC1491 SITOR fuse switch 14x 51, up to 50 A, 690 VAC
SIEMENS 3NC3 341-1 SEMICONDUCTOR FUSE - LOT OF 3
Siemens 3RA1911-1A
Siemens 3RA6250-1EP32 SIRIUS Compact Load Feeder, Reversing Starter, 8...32 A
SIEMENS 3RA9 006-0FC PCB CARD
SIEMENS 3RA9 100–OBB PCB CARD N4965-011.02
SIEMENS 3RA9 126-OAA PCB CARD N4965-031.01
Siemens 3RF24051BB04 (We have more in stock need more contact us)
SIEMENS 3RG4603-2AB00 PROXIMITY SWITCH
SIEMENS 3RG7056-3CD00 LASER PROXIMITY SWITCH 10-30V
Siemens 3RG7826-1CB1 SEGUARD Safety Relay - FAULTY
Siemens 3RG7826-1CB1 Siguard Safety Relay - Defective
SIEMENS 3RH1140-2BB40
SIEMENS 3RH1244-1AP00 CONTACTOR RELAY 230V 50/60Hz AC-15 6A 230V 44E 4NO+4NC
Siemens 3RH1921-1DA11
Siemens 3RH1921-1DA11 Auxiliary Switch Block
Siemens 3RH1921-1EA11 Auxiliary Switch Block
SIEMENS 3RH1921-1EA20
Siemens 3RH1921-1HA22
Siemens 3RH1921-1MA11
Siemens 3RH2140-1AF00 contactor relay, 4 NO, 110 V AC, 50/60 Hz, screw terminal
Siemens 3RH2140-2BB40 Auxiliary Contact / Contactor
Siemens 3RH2140-2BB40 auxiliary protection / contactor
Siemens 3RH2911-2HA31
SIEMENS 3RK1200-0CE00-0AA2 AS-INTERFACE MODULE, SLIMLINE S22.5, DIGITAL
SIEMENS 3RK1301-0HB00-1AA2 RS1-X MOTOR STARTER MODULE
Siemens 3RK1315-6KS41-0AA0
SIEMENS 3RK1400-1BQ00-0AA3 AS-INTERFACE COMPACT MODULE 2I/2O 2 x M12
Siemens 3RK1402-3CE00-0AA2
Siemens 3RK1904-1AC00 AS-Interface Addressing Device
Siemens 3RP1525-1BW30 Electronic timing relay, 2 change-over contacts
Siemens 3RT1015-1BB41
Siemens 3RT1016-1JB41
SIEMENS 3RT1017-1AP01 Contactor - 5.5 kW
Siemens 3RT1017-1AP01 Contactor/Contactor - 5.5 kW *E:05
Siemens 3RT1017-2BB42 SIRIUS Power contactor, AC-3 12A, 5.5kW / 400V, 1NC, 24VDC
SIEMENS 3RT1033-3AK60
Siemens 3RT1034-1AF00 SIRIUS 3-pole contactor, 32A, 15kW / 400V, 110V AC coil
SIEMENS 3RT1034-1AF04 SIRIUS CONTACTOR 110V 50HZ AC-3 15KW 400V 2NO+2NC
SIEMENS 3RT1035-1AP00 Contactor - 18.5 kW *E:04
Siemens 3RT1035-1AP00 Contactor/Contactor - 18.5 kW *E:04
SIEMENS 3RT1036-1AF04
Siemens 3RT1046-1B
SIEMENS 3RT1054-1AP36 3-POLE POWER CONTACTOR WITH AUXILIARY SWITCH 3RH1921-1DA11
SIEMENS 3RT1054-6AF36 SIRIUS 3-POLE POWER CONTACTOR WITH SWITCH 3RH1921-1DA11
SIEMENS 3RT1054-6LA06 SIRIUS 3-POLE POWER CONTACTOR
SIEMENS 3RT1055-6AR36 SIRIUS POWER CONTACTOR
SIEMENS 3RT1065-6AP36 SIRIUS 3-POLE POWER CONTACTOR
SIEMENS 3RT1066-6NP36 SIRIUS POWER CONTACTOR WITH AUXILIARY SWITCH 3RH1921-1DA11
Siemens 3RT1317-1AF00
Siemens 3RT1446-6AV66
Siemens 3RT1446-6BB46
SIEMENS 3RT1916-1DG00
Siemens 3RT1916-1JJ00
Siemens 3RT1916-2CG21 Time Relay Attachment
Siemens 3RT1916-2GJ51 Time Relay Attachment
SIEMENS 3RT1926-1B00
SIEMENS 3RT1926-1BC00
SIEMENS 3RT1955-5AF31 WITHDRAWABLE DRIVE COIL FOR CONTACTOR
Siemens 3RT2015-2FB42
Siemens 3RT2017-1KB42 contactor / 5.5 kW
Siemens 3RT2017-1KB42 Contactor 5.5 kW
Siemens 3RT2018-1AP01 power contactor, 16A, 7.5kW / 400V, 1 NO, 230V AC, 3-pole
Siemens 3RT2023-1FB40
Siemens 3RT2026-1BM40 Contactor, AC-3 25A, 11kW / 400V, 3-pole, 220V DC coil
Siemens 3RT2028-1FB40 contactor / contactor 18.5 kW
Siemens 3RT2028-1FB40 Contactor 18.5 kW
SIEMENS 3RT2036-1AL24 3-POLE POWER CONTACTOR 3RH2911-1HA11
SIEMENS 3RT6025-1AC20
SIEMENS 3RU1146-4LB1 OVERLOAD RELAY 70/90A
Siemens 3RU1926-3AA01
Siemens 3RU2116-1AB1 Overload relay 1.1... 1.6A, thermal for motor protection
Siemens 3RV1011-0EA10
Siemens 3RV1011-0JA10
Siemens 3RV1011-0KA10
Siemens 3RV1011-1BA10
Siemens 3RV1011-1DA10
SIEMENS 3RV1011-1DA10 SIRIUS INNOVATION 690V MOTOR PROTECTION CIRCUIT BREAKER
SIEMENS 3RV1011-1EA10
Siemens 3RV1021-1DA10 / *E: 05 Circuit Breaker 3ZX1012-0RV02-1AA1
Siemens 3RV1021-1DA10 / *E:05 Circuit Breaker 3ZX1012-0RV02-1AA1
SIEMENS 3RV1021-1FA10
Siemens 3RV1021-1KA10 / *E: 05 Circuit Breaker 3ZX1012-0RV02-1AA1
Siemens 3RV1021-1KA10 / *E:05 Circuit Breaker 3ZX1012-0RV02-1AA1
SIEMENS 3RV1021-1KA10/E : 05 Interrupt
Siemens 3RV1021-4AA10
Siemens 3RV1021-4BA10 / *E: 05 Circuit Breaker 3ZX1012-0RV02-1AA1
Siemens 3RV1021-4BA10 / *E:05 Circuit Breaker 3ZX1012-0RV02-1AA1
Siemens 3RV1021-4DA10
Siemens 3RV1031-4DA10 Circuit Breaker
SIEMENS 3RV1041-4LA10 SIRIUS CIRCUIT BREAKER
SIEMENS 3RV1142-4LA10 SIRIUS CIRCUIT BREAKER
SIEMENS 3RV1421-0HA10
Siemens 3RV1611-1DG14 SIRIUS Voltage transformer circuit breaker, 20A
SIEMENS 3RV1901-2A
SIEMENS 3RV2011-1DA10 3RA21101DA151BB4 3RT2015-1BB41 3RV2928-1H 3RH2911-1BA01
Siemens 3RV2011-1EA10 SIRIUS Circuit breaker for motor protection
Siemens 3RV2011-1FA10 SIRIUS Circuit breaker size S00 for motor protection
Siemens 3RV2011-1KA10 SIRIUS Circuit breaker for motor protection
Siemens 3RV2011-4AA10 SIRIUS Circuit breaker size S00 for motor protection
SIEMENS 3RV2021-4EA15 SIRIUS CIRCUIT BREAKER FOR MOTOR PROTECTION
SIEMENS 3RV2021-4FA10
SIEMENS 3RV2031-4UA10 SIRIUS CIRCUIT BREAKER
Siemens 3RV2041-4JA10 Motor Protection Circuit Breaker (MPCB), A-release 45-63A
Siemens 3rw2234-oab15 incl. control part SIKOSTART 3RW2920-1BB05
Siemens 3RW2234-OAB15 incl. Control Unit SIKOSTART 3RW2920-1BB05
Siemens 3RW4037-1BB14 Soft starter, 63A, 30kW (400V), 110-230V AC/DC operated
SIEMENS 3RW4444-6BC34 SIRIUS AC SEMICONDUCTOR MOTOR STARTER
SIEMENS 3RW5513-1HA14 / *E: 08 AC Semiconductor Motor Starter
SIEMENS 3RW5513-1HA14 / *E:08 AC Semiconductor Motor Starter
Siemens 3RX9501-1BA00 AS-i Power 3 A 24 V DC AS-Interface power supply unit
Siemens 3SB1400-0A
Siemens 3SB3400-0B
Siemens 3SE5112-1QV10 SIRIUS Safety position switch with separate actuator
Siemens 3se6604-2ba / *E: 01 Magnetic switch