6FC5110-0BB04-0AA1
PLC的故障类型有哪些？
外部设备故障
外部设备就是与PLC实际过程直接联系的各种开关、传感器、执行机构、负载等。这些设备发生故障，会直接影响PLC系统的控制功能。因此，维修PLC，首先要分清是外部设备故障，还是PLC本身故障。
系统故障
1）系统故障是影响PLC系统运行的全局性故障。
2）PLC系统故障可以分为固定性故障、偶然性故障。
3）故障发生后，可以重新启动使系统恢复正常，则就是偶然性故障。如果重新启动不能恢复，而是需要更换硬件或软件，系统才能够恢复正常，则认为是固定性故障。
硬件故障
PLC硬件故障主要指PLC系统中的模板、电路损坏而造成的故障。
软件故障
PLC软件故障包含软件错误、操作错误等。PLC软件故障一般可以通过PLC本身的自诊断测试功能或者软件来查看、检查。

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ALLEN-BRADLEY RUN/FAULT CONTACT BOARD 1334-MOD-W3 1334MODW3 REV 03
ALLEN-BRADLEY SAFETY CONTACTOR 100S-C12DJ404C 100SC12DJ404C 24 VDC
ALLEN-BRADLEY SAFETY RELAY 440R-E21357 440RE21357
ALLEN-BRADLEY SECURITY PUSH BUTTON STATION 800H-NX64 800HNX64 KEY LOCK ONLY
ALLEN-BRADLEY SELECTOR SWITCH 800H-24JRG5KB7AX 800H24JRG5KB7AX
ALLEN-BRADLEY SINGLE-AXIS CABLE ASSEMBLY 1391-SAQB 1391SAQB SERIES A
ALLEN-BRADLEY SINGLE-AXIS CABLE ASSEMBLY 1391-SAQB 1391SAQB SERIES A
ALLEN-BRADLEY SLC 500 INPUT MODULE 1746-IV16 SERIES C 10-30 VDC INPUT VOLT
ALLEN-BRADLEY SMALL ROUND PILOT LIGHT 800MR-QL24AS 800MRQL24AS
ALLEN-BRADLEY SMALL SQUARE PILOT LIGHT 800MS-CQT24XK 800MSCQT24XK
ALLEN-BRADLEY SOLID STATE TIMING RELAY 852S-C 852SC SERIES G
ALLEN-BRADLEY TERMINAL BLOCK SET 40116-824-02 30 AMP 600 VOLT
ALLEN-BRADLEY TERMINATION PANEL 1771-HT 1771HT
ALLEN-BRADLEY TERMINATION PANEL 1771-HT3 1771HT3 91670601
ALLEN-BRADLEY TIME DELAY RELAY 700-HTF12600SU120 700HTF12600SU120 SERIES A
ALLEN-BRADLEY TIME DELAY RELAY 700-HTF12600SU120 700HTF12600SU120 SERIES A
ALLEN-BRADLEY TOUCH SCREEN ADAPTER KIT 2711-NR5T 2711NR5T FOR PV1200 SCREEN
ALLEN-BRADLEY TOWER LIGHT STACK ASSEMBLY 855TV-B24D5 SERIES C 24V
ALLEN-BRADLEY TOWER LIGHT STACK ASSEMBLY 855TV-B24D5 SERIES C 24V
ALLEN-BRADLEY TRIP CONTROL BOARD 50916
ALLEN-BRADLEY TRIP UNIT 140UE-JTF3-C80 3 POLE 80 AMP
ALLEN-BRADLEY TTL OUTPUT MODULE 1777-OG 1777OG
ALLEN-BRADLEY TTL OUTPUT MODULE 1777-OG 1777OG
ALLIED TELESIS CENTRECOM MX26F FIBER OPTIC TRANSCEIVER AT-MX26F ATMX26F
ALLIED-LOCKE PRECISION ROLLER CHAIN 35-1NP 351NP 10 FT 3/8" X 1/5"
ALLIED-LOCKE PRECISION ROLLER CHAIN 35-1NP 351NP 10 FT 3/8" X 1/5"
ALTECH FOOT SWITCH 51.253R FS2U1S/I1SU 10A 500 VAC
AMERICAN / CHALLENGER CIRCUIT BREAKER TRIP UNIT NM022600 NM022600R 600 AMP
AMERICAN AEROSPACE CONTROLS / AAC AC CURRENT SENSOR 1003AM1-30-B 1003AM130B
AMERICAN AIR FILTER TYPE T-M HOOD 1307198-16 592-198-016
AMERICAN METER SPEED REDUCER BF 30/P BF30/P R: 1/30
AMERICAN METER SPEED REDUCER BF 30/P BF30/P R: 1/30
AMERICAN METER SPEED REDUCER FRD 30/FP1 FRD30/FP1 R: 1/30
AMETEK / DREXELBROOK UPGRADE PACKAGE PXX1-X0ZZ-NN-CD PXX1X0ZZNNCD
AMETEK / US GAUGE PRESSURE GAUGE 171222A 2-1/2" 30 IN HG 1/4" NPT LM
AMETEK FAILSAFE ALARM PC BOARD ET-1234-H3-A12 ET1234H3A12
AMETEK FAILSAFE ALARM PC BOARD ET-1234-H3-A12 ET1234H3A12
AMETEK PRESSURE / TEMPERATURE GAUGE ANSI-B40.1 ANSIB401 69116 0-60 PSI
AMETRIC PULLEY 40T10/30 2 30 TEETH
AMI BALL BEARING MSER207-20 1-1/4"
AMI BALL BEARING MSER207-20 1-1/4"
AMI BEARINGS INC / ASAHI PILLOW BLOCK BEARING MUCTPL205-16W MUCTPL205
AMI BEARINGS INC. BEARING BLF1-8MZ2W BLF18MZ2W
AMI BEARINGS PILLOW BLOCK BEARING UCPH202
ANCHOR ROLLER CHAIN ANC40-1 ANC401 10 FEET / 3.05 METERS
ANDERSON ELECTRICAL BOX WITH GAUGE EF0820100514102
ANDERSON ELECTRICAL BOX WITH GAUGE EF0820100514102
ANDERSON INSTRUMENT CO. PRESSURE GAUGE EL029010321111A 30" VAC T0 30 PSI
ANDERSON INSTRUMENT CO. PRESSURE GAUGE EL029010321111A 30" VAC T0 30 PSI
APPLETON / ATEX / ATX 2 POS MAINTAINED SWITCH DH5P25 094012 EP25
APPLETON / ATEX / ATX 3 POSITION SWITCH HEAD OPERATOR 098334 98334
APPLETON / ATEX / ATX EMERGENCY STOP PUSHBUTTON 098303 98303
APPLETON / ATEX / ATX SELECTOR KNOB 098338 98338
APPLETON / ATEX / ATX SELECTOR KNOB 098338 98338
APPLETON / ATX SELECTOR SWITCH MODULE B21806
APPLETON CABLE CONNECTOR ECC506RH-C
APPLETON PILOT LIGHT SPLSCLB 125 VAC MAX 60 HZ
APPLETON PILOT LIGHT SPLSCLB 125 VAC MAX 60 HZ
ARLON FILTER PXX1A-10 PXX1A10
ARMSTRONG BUCKET MECHANISM AND SEAT B1672-8 B16728 7/32" ORIFICE PCA 314
ARNOLD MAGNETICS THIN-VERTER ADJUSTABLE AC TO DC POWER SUPPLY PHU-14/2.8G
ARROW HART / COOPER / CROUSE-HINDS WATERTIGHT RECEPTACLE AH360R6W 60A 250 V
ARROW HART 1 POLE CONTACT KIT 37640-301 37640301
ARROW HART AUTOGRIP CONNECTOR 6711N 50A 125V 2P 3W GRD .425"-1.320"
ARROW HART COIL 34320-503 440-480 VOLT 50/60 HZ
ARROW HART COIL 34320-521 200-230 VOLT 50/60 HZ
ARROW HART COIL 34530-502 208/220 208/240 VOLT 50/60 HZ
ARROW HART COIL 34530-503 440-480 VOLT 60 HZ
ARROW HART COIL 34530-530 277 VOLT 50/60 HZ
ARROW HART COIL 34530-543 24 VOLT 50/60 HZ
ARROW HART COIL 34530-543A 24 VOLT 50/60 HZ


资讯来源：福州卓凯