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1326AB-A2E-11-0328A
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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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ASCO 836G66 20VAC 3-WAY N.O. SOLENOID VALVE /2" NPT
ASCO 837G23 20/60 SOLENOID VALVE /4" 3-WAY N.C. 5-50 PSI AIR-ONLY
ASCO 837G23 20/60 SOLENOID VALVE /4" 3-WAY N.C. 5-50 PSI AIR-ONLY
ASCO 90-266- FACTORY SOLENOID COIL 5/60 NOS CONDITION IN
ASCO 96-69--D SOLENOID VALVE REPLACEMENT COIL 20/60 0/50
ASCO 96-69--D SOLENOID VALVE REPLACEMENT COIL 20/60 0/50
ASCO 9780544 ROD BEARING SEAL KIT CONDITION IN PKG
ASCO 9780554/2M2 PISTON CUSHION SEAL SERVICE KIT CONDITION IN PKG
ASCO 98-824-7D FACTORY REPLACEMENT SOLENOID VALVE COIL 20V NOS CONDITION
ASCO 99-26-D FACTORY SOLENOID COIL 0/20V
ASCO EF825C063 20V FUEL GAS SHUT-OFF VALVE -/4" NPT 25 PSI 2W NO
ASCO EF8300G058U SOLENOID VALVE 3-WAY /4" 20V 50 PSI CONDITION
ASCO EF8342G20 N.C. 4-WAY SOLENOID VALVE /4" NPT 20VAC
ASCO EF8344G050 N.C. 4-WAY SOLENOID VALVE 3/8" NPT 20VAC
ASCO EF836G066 20VAC 3-WAY SOLENOID VALVE /2" NPT
ASCO EF840B204M 24VDC 3-WAY SOLENOID VALVE /4" NPT
ASCO EF840B204M 24VDC 3-WAY SOLENOID VALVE /4" NPT
ASCO EFX836G024PMO395 20VAC 3-WAY N.C. SOLENOID VALVE /2" NPT
ASCO EFX836G024PMO395 20VAC 3-WAY N.C. SOLENOID VALVE /2" NPT
ASCO JB82463 NORMALLY-OPEN 20V GAS SHUT-OFF VALVE -/4" NPT 5 PSI
ASCO JB8320B3 SOLENOID VALVE 3-WAY /8"NPT 20V
ASCO JKF820G002 20V 2-WAY N/C SOLENOID VALVE /2" NPT
ASCO JOUCOMATIC JOU8300CB3 PNEUMATIC CYLINDER 4" STROKE CONDITION /
ASCO JOUCOMATIC JOU8300CB3 PNEUMATIC CYLINDER 4" STROKE CONDITION /
ASCO MODEL 064982-004D 20V 60 HZ COIL
ASCO MODEL 09926-00-D COIL 20 VAC NIB!!!
ASCO MODEL 30266 REBUILD KIT 836
ASCO MODEL 825A53 GAS VALVE " NPT 0-25PSI 20/60 NNB!
ASCO MODEL 825A53 GAS VALVE " NPT 0-25PSI 20/60 NNB!
ASCO MODEL 8345B5 /4" VALVE 20V 60HZ 0-50PSI NNB
ASCO PA0A TRI-POINT GP PRESSURE SWITCH 0-00 PSI OPERATING RANGE
ASCO RED HAT 236034 SOLENOID VALVE REPAIR KIT
ASCO SC820G95VM VACUUM SOLENOID VALVE 0-3 TORR VACUUM 24V 3/4" NPT
ASCO SCE374A06 SOLENOID VALVE GENERAL PURPOSE /4" NPT 24VDC
ASCO SCE374A06 SOLENOID VALVE GENERAL PURPOSE /4" NPT 24VDC
ASCO SERIES 28 AIR/OIL EXCHANGER FOR TYPE AD VALVE 2800007
ASCO TV34A32 PRESSURE TRANSDUCER SWITCH ASSEMBLY CAT# SB30DF CONDITION
ASCO TV34A32 PRESSURE TRANSDUCER SWITCH ASSEMBLY CAT# SB30DF CONDITION
ASCO U8225B3V MINI SOLENOID VALVE /8" NPT 0/20V 75 PSI CONDITION
ASCO VALVE 306680-R-F SOLENOID VALVE SERVICE / REPAIR KIT NOS CONDITION IN
ASCO VALVE MODEL 302285 VALVE REBUILD KIT !!!
ASCO VALVE MODEL 302289-V VALVE REBUILD KIT
ASCO VALVE MODEL 3089-MS VALVE REBUILD KIT NIB!!!
ASCO VALVES 96-87--D REPLACEMENT SOLENOID VALVE COIL 0/20V NOS CONDITION
ASCO VALVES 99-26-5-D REPLACEMENT SOLENOID VALVE COIL 0/20V CONDITION
ASCO VALVES NF B344A70 4-WAY SOLENOID VALVE /4"NPT / 3/8"EXHAUST 0V NNB
ASCO WPFT836 64 SOLENOID VALVE 20VAC NNB
ASCO WTX840B2028879 SOLENOID METERING VALVE 00/20V USED CONDITION
ASHCROFT 009 AW02B DURALIFE GAUGE 0-400 PSI
ASHCROFT B420B 5A 00PSI VALVE CONTROL UNIT USED
ASHCROFT B420B 5A 00PSI VALVE CONTROL UNIT USED
ASHCROFT B420B SNAP ACTION SWITCH 5A, 25/250V 60 PSI CONDITION
ASHCROFT B420B-XFSPK 5A 500PSI VALVE CONTROL UNIT NNB!
ASHCROFT B424T-XFS 5A 9.25PSI VALVE CONTROL UNIT CONDITION /
ASHCROFT B722V XC8NHFS07 PRESSURE SWITCH 20 PSI CONDITION /
ASHCROFT B722V XC8NHFS07 PRESSURE SWITCH 20 PSI CONDITION /
ASHCROFT NA9235-066 PRESSURE GAUGE 63mm 0-5KPSI NIB!
ASM TECH A-69-5 MULTIFUNCTION FLUID CHARGING UPPER BODY ASSEMBLY NOS CONDITION
ASM TECH A-69-5 MULTIFUNCTION FLUID CHARGING UPPER BODY ASSEMBLY NOS CONDITION
ASTEC 73-385-09 POWER SUPPLY 2VDC OUTPUT NIB!!!
ATC 039B-006-Q--X SOLID STATE TIME DELAY RELAY 0-30 SECONDS
ATI INDUSTRIAL AUTOMATION QC0MX ROBOTIC TOOL CHANGER
ATI INDUSTRIAL AUTOMATION SB2M ISRA VISION MASTER MODULE CONDITION
ATI SYSTEMS 0676 CONNECTOR NOS CONDITION /
ATI SYSTEMS 769 CONNECTOR NOS CONDITION /
ATLANTA 58 44 309 GEAR REDUCER GEAR
ATLAS COPCO 420-25-90 PLANETARY GEAR HEAD IN PKG
ATLAS COPCO 420-3067-90 FACTORY BACK HEAD ASSEMBLY COMPLETE IN PACKAGE
ATLAS COPCO 4240-5000-0 SPINDLE CONTROLLER MODULE
ATLAS COPCO LME56 AV2 AIR MOTOR 20 RPM USED CONDITION
ATM VL 5/6 TAPERED REAMER HHS MORSE TAPER SHANK CONDITION
ATMEL AT27C52R 2JC EPROM CHIP 32-PIN (SET OF 2) !!
AUGAT / RDI 202BS 2PDT MINIATURE SOCKET ASSEMBLY 5A/50V USED CONDITION
AUGAT PYLON S2757-2ED POGO SOCKET 0PCS. IN PACKAGE
AUGAT PYLON S2757-2ED POGO SOCKET 0PCS. IN PACKAGE
AURORA BEARING XAB-8Z ROD END /2" BORE LEFT HAND THRD. IN PACKAGE
AUTOCALL 8625-397 ALARM SWITCH CONTROL BOARD 8625397 CONDITION
AUTOMATIC VALVE 200A-0 FLOW CONTROL VALVE " NPT CONDITION
AUTOMATIC VALVE 308B22Y39A-AA SOLENOID VALVE 20V CONDITION /
AUTOMATIC VALVE 308B22Y39A-AA SOLENOID VALVE 20V CONDITION /
AUTOMATIC VALVE 338D32C3-AAK4 PNEUMATIC SOLENOID EXHAUST VALVE 50PSI NNB
AUTOMATIC VALVE 338D35B3-AA SOLENOID VALVE
AUTOMATIC VALVE 338D35B-AA SOLENOID VALVE 0/20V
AUTOMATIC VALVE 407B43S39A-AA5 PNEUMATIC SOLENOID VALVE 20V
AUTOMATIC VALVE 407B43S3S3-DB7 PNEUMATIC SOLENOID VALVE 24V
AUTOMATIC VALVE 407B67S39A-AA5 PNEUMATIC SOLENOID VALVE
AUTOMATIC VALVE 407B67S3C-AA4 PNEUMATIC SOLENOID VALVE 20V
AUTOMATIC VALVE 407B67-S3S3-5 PNEUMATIC SOLENOID VALVE 20V
AUTOMATIC VALVE 407B87S3S3-AA4 PNEUMATIC SOLENOID VALVE 20V 50PSI
AUTOMATIC VALVE 407D87S39DS3AA4 PNEUMATIC SOLENOID VALVE 20V 50PSI
AUTOMATIC VALVE 408B22-3B-D /4" NPT 4-WAY PNEUMATIC MANUAL VALVE
ASCO 836G66 20VAC 3-WAY N.O. SOLENOID VALVE /2" NPT
ASCO 837G23 20/60 SOLENOID VALVE /4" 3-WAY N.C. 5-50 PSI AIR-ONLY
ASCO 837G23 20/60 SOLENOID VALVE /4" 3-WAY N.C. 5-50 PSI AIR-ONLY
ASCO 90-266- FACTORY SOLENOID COIL 5/60 NOS CONDITION IN
ASCO 96-69--D SOLENOID VALVE REPLACEMENT COIL 20/60 0/50
ASCO 96-69--D SOLENOID VALVE REPLACEMENT COIL 20/60 0/50
ASCO 9780544 ROD BEARING SEAL KIT CONDITION IN PKG
ASCO 9780554/2M2 PISTON CUSHION SEAL SERVICE KIT CONDITION IN PKG
ASCO 98-824-7D FACTORY REPLACEMENT SOLENOID VALVE COIL 20V NOS CONDITION
ASCO 99-26-D FACTORY SOLENOID COIL 0/20V
ASCO EF825C063 20V FUEL GAS SHUT-OFF VALVE -/4" NPT 25 PSI 2W NO
ASCO EF8300G058U SOLENOID VALVE 3-WAY /4" 20V 50 PSI CONDITION
ASCO EF8342G20 N.C. 4-WAY SOLENOID VALVE /4" NPT 20VAC
ASCO EF8344G050 N.C. 4-WAY SOLENOID VALVE 3/8" NPT 20VAC
ASCO EF836G066 20VAC 3-WAY SOLENOID VALVE /2" NPT
ASCO EF840B204M 24VDC 3-WAY SOLENOID VALVE /4" NPT
ASCO EF840B204M 24VDC 3-WAY SOLENOID VALVE /4" NPT
ASCO EFX836G024PMO395 20VAC 3-WAY N.C. SOLENOID VALVE /2" NPT
ASCO EFX836G024PMO395 20VAC 3-WAY N.C. SOLENOID VALVE /2" NPT
ASCO JB82463 NORMALLY-OPEN 20V GAS SHUT-OFF VALVE -/4" NPT 5 PSI
ASCO JB8320B3 SOLENOID VALVE 3-WAY /8"NPT 20V
ASCO JKF820G002 20V 2-WAY N/C SOLENOID VALVE /2" NPT
ASCO JOUCOMATIC JOU8300CB3 PNEUMATIC CYLINDER 4" STROKE CONDITION /
ASCO JOUCOMATIC JOU8300CB3 PNEUMATIC CYLINDER 4" STROKE CONDITION /
ASCO MODEL 064982-004D 20V 60 HZ COIL
ASCO MODEL 09926-00-D COIL 20 VAC NIB!!!
ASCO MODEL 30266 REBUILD KIT 836
ASCO MODEL 825A53 GAS VALVE " NPT 0-25PSI 20/60 NNB!
ASCO MODEL 825A53 GAS VALVE " NPT 0-25PSI 20/60 NNB!
ASCO MODEL 8345B5 /4" VALVE 20V 60HZ 0-50PSI NNB
ASCO PA0A TRI-POINT GP PRESSURE SWITCH 0-00 PSI OPERATING RANGE
ASCO RED HAT 236034 SOLENOID VALVE REPAIR KIT
ASCO SC820G95VM VACUUM SOLENOID VALVE 0-3 TORR VACUUM 24V 3/4" NPT
ASCO SCE374A06 SOLENOID VALVE GENERAL PURPOSE /4" NPT 24VDC
ASCO SCE374A06 SOLENOID VALVE GENERAL PURPOSE /4" NPT 24VDC
ASCO SERIES 28 AIR/OIL EXCHANGER FOR TYPE AD VALVE 2800007
ASCO TV34A32 PRESSURE TRANSDUCER SWITCH ASSEMBLY CAT# SB30DF CONDITION
ASCO TV34A32 PRESSURE TRANSDUCER SWITCH ASSEMBLY CAT# SB30DF CONDITION
ASCO U8225B3V MINI SOLENOID VALVE /8" NPT 0/20V 75 PSI CONDITION
ASCO VALVE 306680-R-F SOLENOID VALVE SERVICE / REPAIR KIT NOS CONDITION IN
ASCO VALVE MODEL 302285 VALVE REBUILD KIT !!!
ASCO VALVE MODEL 302289-V VALVE REBUILD KIT
ASCO VALVE MODEL 3089-MS VALVE REBUILD KIT NIB!!!
ASCO VALVES 96-87--D REPLACEMENT SOLENOID VALVE COIL 0/20V NOS CONDITION
ASCO VALVES 99-26-5-D REPLACEMENT SOLENOID VALVE COIL 0/20V CONDITION
ASCO VALVES NF B344A70 4-WAY SOLENOID VALVE /4"NPT / 3/8"EXHAUST 0V NNB
ASCO WPFT836 64 SOLENOID VALVE 20VAC NNB
ASCO WTX840B2028879 SOLENOID METERING VALVE 00/20V USED CONDITION
ASHCROFT 009 AW02B DURALIFE GAUGE 0-400 PSI
ASHCROFT B420B 5A 00PSI VALVE CONTROL UNIT USED
ASHCROFT B420B 5A 00PSI VALVE CONTROL UNIT USED
ASHCROFT B420B SNAP ACTION SWITCH 5A, 25/250V 60 PSI CONDITION
ASHCROFT B420B-XFSPK 5A 500PSI VALVE CONTROL UNIT NNB!
ASHCROFT B424T-XFS 5A 9.25PSI VALVE CONTROL UNIT CONDITION /
ASHCROFT B722V XC8NHFS07 PRESSURE SWITCH 20 PSI CONDITION /
ASHCROFT B722V XC8NHFS07 PRESSURE SWITCH 20 PSI CONDITION /
ASHCROFT NA9235-066 PRESSURE GAUGE 63mm 0-5KPSI NIB!
ASM TECH A-69-5 MULTIFUNCTION FLUID CHARGING UPPER BODY ASSEMBLY NOS CONDITION
ASM TECH A-69-5 MULTIFUNCTION FLUID CHARGING UPPER BODY ASSEMBLY NOS CONDITION
ASTEC 73-385-09 POWER SUPPLY 2VDC OUTPUT NIB!!!
ATC 039B-006-Q--X SOLID STATE TIME DELAY RELAY 0-30 SECONDS
ATI INDUSTRIAL AUTOMATION QC0MX ROBOTIC TOOL CHANGER
ATI INDUSTRIAL AUTOMATION SB2M ISRA VISION MASTER MODULE CONDITION
ATI SYSTEMS 0676 CONNECTOR NOS CONDITION /
ATI SYSTEMS 769 CONNECTOR NOS CONDITION /
ATLANTA 58 44 309 GEAR REDUCER GEAR
ATLAS COPCO 420-25-90 PLANETARY GEAR HEAD IN PKG
ATLAS COPCO 420-3067-90 FACTORY BACK HEAD ASSEMBLY COMPLETE IN PACKAGE
ATLAS COPCO 4240-5000-0 SPINDLE CONTROLLER MODULE
ATLAS COPCO LME56 AV2 AIR MOTOR 20 RPM USED CONDITION
ATM VL 5/6 TAPERED REAMER HHS MORSE TAPER SHANK CONDITION
ATMEL AT27C52R 2JC EPROM CHIP 32-PIN (SET OF 2) !!
AUGAT / RDI 202BS 2PDT MINIATURE SOCKET ASSEMBLY 5A/50V USED CONDITION
AUGAT PYLON S2757-2ED POGO SOCKET 0PCS. IN PACKAGE
AUGAT PYLON S2757-2ED POGO SOCKET 0PCS. IN PACKAGE
AURORA BEARING XAB-8Z ROD END /2" BORE LEFT HAND THRD. IN PACKAGE
AUTOCALL 8625-397 ALARM SWITCH CONTROL BOARD 8625397 CONDITION
AUTOMATIC VALVE 200A-0 FLOW CONTROL VALVE " NPT CONDITION
AUTOMATIC VALVE 308B22Y39A-AA SOLENOID VALVE 20V CONDITION /
AUTOMATIC VALVE 308B22Y39A-AA SOLENOID VALVE 20V CONDITION /
AUTOMATIC VALVE 338D32C3-AAK4 PNEUMATIC SOLENOID EXHAUST VALVE 50PSI NNB
AUTOMATIC VALVE 338D35B3-AA SOLENOID VALVE
AUTOMATIC VALVE 338D35B-AA SOLENOID VALVE 0/20V
AUTOMATIC VALVE 407B43S39A-AA5 PNEUMATIC SOLENOID VALVE 20V
AUTOMATIC VALVE 407B43S3S3-DB7 PNEUMATIC SOLENOID VALVE 24V
AUTOMATIC VALVE 407B67S39A-AA5 PNEUMATIC SOLENOID VALVE
AUTOMATIC VALVE 407B67S3C-AA4 PNEUMATIC SOLENOID VALVE 20V
AUTOMATIC VALVE 407B67-S3S3-5 PNEUMATIC SOLENOID VALVE 20V
AUTOMATIC VALVE 407B87S3S3-AA4 PNEUMATIC SOLENOID VALVE 20V 50PSI
AUTOMATIC VALVE 407D87S39DS3AA4 PNEUMATIC SOLENOID VALVE 20V 50PSI
AUTOMATIC VALVE 408B22-3B-D /4" NPT 4-WAY PNEUMATIC MANUAL VALVE
