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。
Fanuc A20B-1003-034 0/50C Circuit Board
Fanuc A20B-2901-048 PM CRT Card
Fanuc A20B-2902-0020 / 01A Memory Module
Fanuc A20B-2902-0070 / 02B Daughter Board
Fanuc A20B-2902-0211 / 03A Daughter Board
Fanuc EE-3287-331-001 Cable
Fanuc IC660ELB905R Genius NET IF Board
Fanuc Robotics EO-4657-501-001 Solenoid Module
Farnell 16RB24024 Power Supply 100-240 VAC Input
Ferraz A025R300 300A 250V Protistor Fuse
Ferraz A025R400 400A 250V Protistor Fuse
Ferraz Shawmut E097294 PS lll 20.127 PRE  MC PS 125A 1500V Fuse Isolator
Festo VN-10-H-T3-PQ2-VQ2-RQ2 Gas Fitting
Fireye MEC120 120V Chassis with 61-5042 Base
Flowline LC40-1001 Sensor Control
Frontier Micro FMC 1201 Control Board
Fuji FVR0. 4C9S-2AM Inverter Drive 3 Phase 230V 2.5 Amp
Furnas 52PA6G2WJK Push to Test Red Lighted Push Button
Furnas 97AMM0207 Current Sensitive Relay
Gardner Denver TM12 Tightening Module
GE 115D3332G0003 Board 115D3331-B
GE 115D3332G3 Board 115D3331-B
GE 193X277AC G02 Signal Level Detector
GE 3S7505PS511E6 Photo Sensor
GE 55-501336G24 Coil for Contactor/Starter (24 Volt)
GE CR215GH47 Limit Switch Operating Head
GE CR324CXDS Solid State Overload Relay 0.8 to 1.7 Amp
GE CR7G4XE Overload Relay (32 to 41 Amp)
GE DS3800DGPA1A1B Control Board
GE DS3800HSCA1G1E Control Board
GE DS3800NDAC1E1F Control Board
GE DS3800NLBA1D1D Control Board
GE DS3800NOCA1B1B Control Board
GE DS3800NOCA1B1B With DS3800DOCA1A1A Control Board
GE Fanuc Genius IC660TSD100B 115 VAC I/O Module
GE Fanuc IC600BF949L ASCII I/O Module
GE Fanuc IC620MDR014B Micro Programmable Controller
GE FANUC IC660CBB902F BUS CONTROL BOARD
GE Fanuc IC660EBD101D 8 Pt I/O Module (IC660EBD101 with IC660TSD100)
GE Fanuc IC660EBD101E 8 Pt I/O Module (IC660EBD101 with IC660TSD100)
GE Fanuc IC693APU300F High Speed Counter Module
GE Fanuc IC693CPU331H Series 90-30 CPU Module
GE IC3645SR4W606N6 Traction Control Module
GE IC3645SR4W606N6 Traction Control Module - Remanufactured
GE IC600YB831B Input Module
GE RTN2A Overload Relay 11.5 to 15 Amp
GE RTN2C Overload Relay 18.5 to 25 Amp
GE THMR3161 30 Amp 600V 3 Pole Fusible Panel Disconnect
GEC 382C108G01 Linear Acceleration Control
Gems 30288 LS-2050 Level Switch
Gems 44714 Flow Switch
Gems 76142 LS-7 Level Switch Ryton
Gems Sensors Multi Stage Float Switch
GIC Thermodynamics RSL5.5S6188100PT11803AA M36113 Thermocouple
Gould A00-66C400D1 400 Amp Fuse
Gould A00-66C400D8 400 Amp Fuse
Gould A1-100C450TS 450 Amp, 1000 Volt Fuse
Gould A3-100C1000TS 1000 Amp, 1000 Volt Fuse
Gould A3-100C1100-4L 1100 Amp, 1000 Volt Fuse
Gould A60X700 Type 4 Semi Conductor Fuse 700 Amp, 600V
Gould CP6-7 500MCM Cable Protector 600 Vac
Gould FTS400R Falt Trap 400 Amp Class RK5 Fuse FTS400R
Gould Modicon PC-0085-103 Programmable Controller
Gould NH 2-gl-gL-gG 250 Amp 690 Volt Fuse
Gould Shawmut A4BT601 Current Limiting Time Delay Fuse 601 Amp, 600 Volt
Gould Shawmut A50P300 300 Amp 500V Fuse
Gould Shawmut A50P350-4 350 Amp 500V Fuse
Gould Shawmut A50P400-4 400 Amp 500V Fuse
Gould Shawmut A50P600 600 Amp 500V Fuse
Gould Shawmut A60X400 Fuse Type 4K
Gould Shawmut A70K400 Fuse Type W2
Gould Shawmut A70P200-4 Type 4 Fuse (200 Amp 700V Fuse)
Gould Shawmut A70P400 Type 4 Fuse (400 Amp 700V Fuse)
Gould Shawmut A70P400-4TA 400 Amp 700V Fuse
GracePort Interface P-P2-K1RF3-G Computer Interface
Graco 198579 Harness Cable with Connector SRZ
Graco 253380 A BOT SILK 15G863 Solenoid Control Board
Great Lakes Instruments 6028P0 Differential PH Electrode
GSE Inc. KDM 40-20-30777 Display Board with 40-20-30635 Soft Touch Pad
Habonim MK47C-15/20-C30-R Mounting Bracket Kit
福州卓凯电子科技有限公司联系人：小林      
 24小时咨询热线：17705012279
电话：0591-22983857
联系QQ：879520885
传真：0591-22989937
公司主营产品有：AB,ABB,GE,西门子,力士乐，施耐德,福克斯，等工业自动化控制配件及各种停产备件。诚信经营，质量可靠，请放心购买，我们将竭诚为您服务！