PLC是为工业自动化设计的通用控制器,不同档次PLC的响应速度一般都能满足其应用范围内的需要。如果要跨范围使用PLC,或者某些功能或信号有特殊的速度要求时,则应该慎重考虑PLC的响应速度,可选用具有高速I/O处理功能的PLC,或选用具有快速响应模块和中断输入模块的PLC等。
系统可靠性的要求
对于一般系统PLC的可靠性均能满足。对可靠性要求很高的系统,应考虑是否采用冗余系统或热备用系统。
(六)机型尽量统一
一个企业,应尽量做到PLC的机型统一。主要考虑到以下三方面问题:
机型统一,其模块可互为备用,便于备品备件的采购和管理。
机型统一,其功能和使用方法类似,有利于技术力量的培训和技术水平的提高。
机型统一,其外部设备通用,资源可共享,易于联网通信,配上位计算机后易于形成一个多级分布式控制系统。
GIDDINGS & LEWIS 502-03813-02R1 USPP 5020381302R1
GIDDINGS & LEWIS 502-03782-02R3 USPP 5020378202R3
GIDDINGS & LEWIS 502-03518-02R1 USPP 5020351802R1
GIDDINGS & LEWIS 502-03786-00R1 USPP 5020378600R1
GIDDINGS & LEWIS 502-03786-02R4 USPP 5020378602R4
GIDDINGS & LEWIS 502-02428-00 USPP 5020242800
GIDDINGS & LEWIS 502-02777-50 USPP 5020277750
GIDDINGS & LEWIS MMC 2-AXIS ANALOG UNIT W/ MMC ETHERNET
Expedited shipping available
Giddings and Lewis 572-02722-50 Address Generator Board
Giddings and Lewis 502-02722-50 Address Generator Board
Giddings and Lewis 572-02721-50 ALU Board
GIDDINGS & LEWIS M.1016.8897 PIC900 ANALOG OUTPUT MOD.
Giddings & Lewis M.1016.8892 RO Analog Output Module
One-day shipping available
GIDDINGS & LEWIS 502-02724-52 PCB /1 YEAR WARRANTY
GIDDINGS & LEWIS 502-02724-51 PCB /1 YEAR WARRANTY
GIDDINGS & LEWIS 502-03846-00R3 USPP 5020384600R3
GIDDINGS & LEWIS 401-54187-10 NSFP 4015418710
GIDDINGS & LEWIS 502-03017-21 NSFP 5020301721
NEW Giddings & Lewis M-1016-9070 502-03640-02R1 PIC900
GIDDINGS & LEWIS 502-02554-00 USPP 5020255400
Giddings & Lewis Faber AC Servo Motor 4000 RPM FSM460
One-day shipping available
GIDDINGS & LEWIS 810-21292-00 USPP 8102129200
GIDDINGS & LEWIS 502-02778-50 USPP 5020277850
Giddings & Lewis 502-02723-83 CPU Control Board – Used
GIDDINGS & LEWIS 502-04050-00R2 USPP 5020405000R2
Giddings and Lewis 502-03093-00 CMOS Dual Bus Memory
G&L Giddings & Lewis 800 572-02777-50 Digitizing Int.
GIDDINGS & LEWIS YSM 323 230V SERVO MOTOR
Electro-Craft, Reliance Electric, Allen Bradley
GIDDINGS & LEWIS Micro DSM007P SERVO DRIVE
Electro-Craft, Reliance Electric, Allen Bradley DDM-005
GIDDINGS & LEWIS MMC 2-AXIS ANALOG UNIT
GIDDINGS & LEWIS MMC SERCOS UNIT
Giddings & Lewis 503-14814-00 3-Ph Drive Gettys N350
GIDDINGS & LEWIS P/N: 871-21977-01 CONTROL MODULE WITH
Giddings & Lewis 502-02731-50 Logic I/O Board – Used
GIDDINGS & LEWIS 502-03657-03 NSFP 5020365703
GIDDINGS & LEWIS 572-03657-03 NSFP 5720365703
GIDDINGS & LEWIS M.1017.3140 USPP M10173140
GIDDINGS & LEWIS 502-03840-23R0 USPP 5020384023R0
GIDDINGS & LEWIS 502-03840-23R1 USPP 5020384023R1