Siemens 6FC3984-3RA

Siemens 6FC3984-3RA 

    输入模块一般由光电耦合电路组成；输出模块根据型号不同有继电输出、晶体管输出、光电输出等。每一点输入输出都有相应的发光二极管指示。有输入信号但该点不亮或确定有输出但输出灯不亮时就应该怀疑I/O模块有故障。输入和输出模块有6到24个点，如果只是因为一个点的损坏就更换整个模块在经济上不合算。通常的做法是找备用点替代，然后在程序中更改相应的地址。但要注意，程序较大是查找具体地址有困难。特别强调的是，无论是更换输入模块还是更换输出模块，都要在PLC断电的情况下进行，S5带电插拔模块是**不允许的。

　CPU模块故障

　　通用型S5PLC的CPU模块上往往包括有通信接口、EPROM插槽、运行开关等，故障的隐蔽性更大，因为更换CPU模块的费用很大，所以对它的故障分析、判断要尤为仔细。

　　检修实例：一台PLC合上电源时无法将开关拨到RUN状态，错误指示灯先闪烁后常亮，断电复位后故障依旧，更换CPU模块后运行正常。在进行芯片级维修时更换了CPU但故障灯仍然不停闪烁，至到更换了通信借口板后功能才恢复正常。



Newly listedNEW Schneider Automation TSX Momentum Communication Adapter 170 ENT 110 00


Newly listed19 New Densei-Lambda DC-DC Power Modules PAH75D 48-5033/V


Newly listedNew Tyco Electronics RAYVOSS-120-2S-M3-3-06-A Transient Voltage Surge Suppressor


Newly listedSorensen DCR 150-12B 0-150V/0-12A Variable Power Supply


Newly listedNew Lucent D2526T885 Laser Module, 10 mW @ 1550 nm


Newly listedNIB Schneider Automation TSX Momentum 170-ADO-540-50, 16 PT Output Module


Newly listedNew Schneider Automation TSX Premium TSX MBP100 Modbus+ PCMCIA Card


Newly listedNIB Automation Direct EZTouch EZ-S6M-F Monochrome Touch Panel Display


Newly listedESI AIS-640H Vision Processor


Newly listedAE Advanced Energy RFG AZX Control 3155050-001 C

SCHLEGEL AT 250V EN 61058 T70 5E4 IEC 60947-5-1 AC 15 A...


ABB SWITCH DISCONNECT 1SCA022379R8010 OTPS125EP FOURTH ...

SCHLEGEL AFL2 250V 5A CONTACT BLOCK MOMENTARY 1.2W 10 P...

MAGNUM ES42 PREMIUM 4 PORT SWITCH - FIBER ETHERNET CONV...


OMRON PROXIMITY SWITCH 45 ~ 260 VAC TL-X2Y2 / TLX2...


GE PUSH TO TEST INDICATING LIGHT *RED* CR104PLT34R...


PARAGON SPRING OPERATED ELECTRIC SWITCH 60 MIN CYC...


C&K TINY SEALED PUSHBUTTON SWITCH EP12SD1AQE / EP...


SIEMENS SIRIUS SAFETY POSITION SWITCH 3SE5 322-1SG...
WESTINGHOUSE WDPF PC PLC OUTPUT BOARD 2840A79G01 3QB0 /...

Yaskawa Electric SGMP-01U314M AC Servo Motor 100W 200V 0.89A


YASKAWA CPCR MR021KBT45 SERVOPACK FOR PARTS ONLY ELECTRIC INDUSTRIAL TOOLMAKER


NEW YASKAWA CACR SR44S Z1SD 4128 SERVOPACK MADE IN JAPAN ELECTRIC INDUSTRIAL


YASKAWA ELECTRIC CACR-PR30BC3CSY112 NEW WITH 30 DAY WARRANTY


YASKAWA CPCR MR052KATY8 SERVOPACK ELECTRIC INDUSTRIAL CONTROL MADE IN JAPAN


YASKAWA ELECTRIC SERVOPACK AMPLIFIER CACR SR S870791313


YASKAWA ELECTRIC SERVOPACK AMPLIFIER CACR SR 20SB1AF


YASKAWA ELECTRIC SERVOPACK CONTROLLER CACR SR 208SB1AF

YASKAWA ELECTRIC CPCR-FR01B97R2M FR01B97 R2M


Yaskawa Electric YFBM-14F6473 4 Pole 3 Phase 200-240V Blower 489586A


YASKAWA ELECTRIC SGDB-60ADG SGDB60ADG qty


Yaskawa Electric UZBA-B 400/440V 50/60Hz Reactor - New, No Box

AC SERVO MOTOR USASEM-15FJ21 YASKAWA ELECTRIC CORP


AC SERVO MOTOR USASEM-08FJ12 YASKAWA ELECTRIC CORP


YASKAWA USAMED 06M S2TD AC SERVO MOTOR ELECTRIC ELECTRICAL INDUSTRIAL MOTORS


YASKAWA USAMED 06M S2S AC SERVO MOTOR ELECTRIC ELECTRICAL INDUSTRIAL MOTORS


YASKAWA SGMG 1AAWABF AC SERVO MOTOR ELECTRIC ELECTRICAL INDUSTRIAL MOTORS


Siemens 6FC3984-3RA