IC693MDL748--+-+-IC693MDL748

IC693MDL748--+-+-IC693MDL748

工业环境空间中的*电磁场和高电压、大电流的通断将会对PLC产生强烈的干扰，由于现场条件的限制，有时几百米长的强电电缆和PLC的低压控制电缆只能敷设在同一电缆沟内，强电干扰在输入线上产生的感应电压和电流相当大，足以使PLC输入端的光电耦合器中的发光二极管发光，光电耦合器的隔离作用失效，使PLC产生误动作。在这种情况下，对于用长线引入PLC的开关量信号，可以用小型继电器来隔离，光电耦合器中发光二极管的zui小工作电流仅为3mA左右，而小型继电器的线圈吸和电流为几十毫安，强电干扰信号通过电磁感应产生的能量不可能使隔离用的继电器吸合。有的系统需要使用外部信号的多对触点，例如一对触点用于指示灯，并使用继电器转接输入信号，这样既能提供多对触点，又实现了对强电干扰信号的隔离。

：张亮（工程师）    专线：
24小时移动专线：         【】

EUROTHERM DRIVES 5526-565-26-00 USPP 55265652600

EUROTHERM CONTROLS 808/T1/T1/N0/QS USPP 808T1T1N0QS

EUROTHERM CONTROLS INC.849/VPR/R1/0/0/0/(@AE165)/CE/@AF137/ 

EUROTHERM CONTROLS AS1/20A240V/4-20MA/PLF USPP AS120A240V420MAP

EUROTHERM 849/VPR/R1/0/0/0/(AXXX4)/C4/20/MA/=/0/80/%J/ 

Eurotherm 808/T1/T1/R1/C4 Digital Temperature Controller

EUROTHERM CONTROLS EUR808BT FNFP EUR808BT

EUROTHERM CONTROLS 810/0-5V/00/J/250.0-350.0C/120V/S/RLS/NS1C1388 USPP 81005V00J

EUROTHERM CONTROLS 810/0-5V/00/J/250.0-350.0C/120V/S/RLS-0-10V/NS1C1388 USPP 810

EUROTHERM CONTROLS 842/0/1/1/0/0/0/AXX000/4 NSPP 842011000AXX0004

EUROTHERM DRIVES 5526-565-12-00 USPP 55265651200

EUROTHERM DRIVES 5526-565-13-00 USPP 55265651300

EUROTHERM CONTROLS 808/T1/NO/NO/QS/AJJF100/SS1F129 USPP 808T1NONOQSAJJF2

EUROTHERM CONTROLS 808/D1/0/0/0/0/QLS/AJGF400 USPP 808D10000QLSAJGF

EUROTHERM CONTROLS 808/T1/NO/NO/NO/AJGF100/SS1F129 USPP 808T1NONONOAJGF1

EUROTHERM CONTROLS 932/250A480V/1M1X11 USPP 932250A480V1M1X1

EUROTHERM CONTROLS 818P4/TC/R4MA20/NONE/FHE/NONE/NONE/NONE/SN/24/0/2500C/NO/NO/E

EUROTHERM CONTROLS 810/4-20MA/00/J/0-400C/120V/S/RLS-0-10V/NS1C1473 USPP 810420M

EUROTHERM CONTROLS 810/4-20MA/00/J/0-400C/120V/S/RLS-0-5V/NS1C1612 USPP 810420MA

EUROTHERM CONTROLS 810/0-5V/00/J/0-1200F/120V/S/RLS USPP 81005V00J01200F1

EUROTHERM CONTROLS 451-081-29-37-76-00 USPP 45108129377600

EUROTHERM CONTROLS 810/4-20MA/00/J/0-400C/120V/S/RLS//NS1C1473 USPP 810420MA00J0

EUROTHERM CONTROLS AS1/30A240V/4-20MA/PLF//

EUROTHERM CONTROLS AE131254C USPP AE131254C

EUROTHERM CONTROLS AE131254D USPP AE131254D

EUROTHERM CONTROLS 425A-63A/240V/110V120/4MA20-PA/ENG/CL/-/NOFUSE/-//00 USPP 425

EUROTHERM CONTROLS EM1/ALM/NS2L18L21 USPP EM1ALMNS2L18L21

LINK 2 Profibus Eurotherm Drives L5353

EUROTHERM CONTROL MASTER - MODEL ECMA2/FA103

EUROTHERM CONTROL MASTER - MODEL ECMA2/FA101

EUROTHERM CONTROLS 2204E/CC/VH/H7/XX/XX/XX/XX/2DN/ENG NIB 597438

EUROTHERM CONTROLS 2204E/NS/VH/XX/XX/RF/RF/XX/2XX/ENG/XXXXX/EU0253 2204FM NIB

Eurotherm AE131249E Rev 002 Circuit Board PCB

EUROTHERM 7100A 80Amp Thyristor 80A/480V/SELF