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PLC的日常維護(hù)和保養(yǎng)比較簡(jiǎn)單，主要是更換保險(xiǎn)絲和鋰電池,
基本沒(méi)有其它易損元器件。由于存放用戶程序的隨機(jī)存儲(chǔ)器（RAM）
、計(jì)數(shù)器和具有保持功能的輔助繼電器等均用鋰電池保護(hù)，鋰電池
的壽命大約為5年，當(dāng)鋰電池的電壓逐漸降低到一定程度時(shí)，PLC基
本單元上電池電壓跌落到指示燈亮，提示用戶注意有鋰電池所支持
的程序還可保留一周左右，必須更換電池，這是日常維護(hù)的主要內(nèi)
容。
調(diào)換鋰電池的步驟為：
■在拆裝前，應(yīng)先讓PLC通電15秒以上（這樣可使作為存儲(chǔ)器備
用電源的電容器充電，在鋰電池?cái)嚅_(kāi)后，該電容可對(duì)PLC做短暫供電
，以保護(hù)RAM 中的信息不丟失）；
■斷開(kāi)PLC的交流電源；
■打開(kāi)基本單元的電池蓋板；
■取下舊電池，裝上新電池；
■蓋上電池蓋板。
注意更換電池時(shí)間要盡量短，一般不允許超過(guò)3分鐘。如果時(shí)間
過(guò)長(zhǎng)，RAM中的程序?qū)⑾А?/div>
此外,應(yīng)注意更換保險(xiǎn)絲時(shí)要采用指定型號(hào)的產(chǎn)品。
I/O模塊的更換
若需替換一個(gè)模塊，用戶應(yīng)確認(rèn)被安裝的模塊是同類(lèi)型。有些
I/O系統(tǒng)允許帶電更換模塊，而有些則需切斷電源。若替換后可解決
問(wèn)題，但在一相對(duì)較短時(shí)間后又發(fā)生故障，那么用戶應(yīng)檢查能產(chǎn)生
電壓的感性負(fù)載，也許需要從外部抑制其電流尖峰。如果保險(xiǎn)絲在
更換后易被燒斷，則有可能是模塊的輸出電流超限，或輸出設(shè)備被
短路。
PLC的故障診斷是一個(gè)十分重要的問(wèn)題，是保證PLC控制系統(tǒng)正
常、可靠運(yùn)行的關(guān)鍵。本文對(duì)常用的故障診斷方法進(jìn)行了探討。在
實(shí)際工作過(guò)程中，應(yīng)充分考慮到對(duì)PLC的各種不利因素，定期進(jìn)行檢
查和日常維護(hù)，以保證PLC控制系統(tǒng)安全、可靠地運(yùn)行。
FANUC MEMORY BOARD PCB A16B-1211-0860/?02A
FANUC ROBOTICS 8-POINT AC/DC RELAY OUTPUT MODULE AOR08G A03B-0807-C160
FANUC ROBOTICS POWER INPUT UNIT A14B-0076-B320
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FANUC PCB DAUGHTER BOARD A20B-2900-0481/?02A
NIEC FANUC RECTIFIER BRIDGE MODULE PT1028CF
FANUC 8 POINT AC/DC RELAY OUTPUT MODULE AOR08G A03B-0807-C160 *MISSING DOOR*
FANUC EE-3186-368-001 INTRINSICALLY SAFE SENSOR
FUJITSU FANUC ROBOTICS OPERATOR INTERFACE KEYBOARD N 860-1604-T052
FANUC COVER A290-7313-X542 *LOT OF 2 NEW*
FANUC A660-8004-T930 FAN CABLE NEW
FANUC EE-3287-331-001 INTRINSICALLY SAFE SOL CABLE
FANUC ROBOTICS MAIN CPU BOARD A16B-2200-0841/?05D *PAINT*
FANUC ROBOTICS OPERATORS MANUAL (VOLUME 2 OF 2) B-63534EN/02
FANUC OUTPUT MODULE A0A12F A03B-0807-C159
FANUC PCB DAUGHTER BOARD A20B-2900-03B0/?04B
FANUC ROBOTICS MEMORY DAUGHTER BOARD PCB A20B-2902-0530/?01A
FANUC ROBOTICS MAIN CPU PCB BOARD A16B-2200-0841/?07E
FANUC ROBOTICS ANALOG OUTPUT MODULE ADA02A A03B-0807-C052 *MISSING DOOR*
FUJI ELECTRIC FANUC 100A POWER DIODE MODULE 6RI100E-080
FUJI ELECTRIC 800V 30A TRANSISTOR MODULE A60L-2001-0232 / 6RI30F-080
FANUC ROBOTICS DCR/DBR UNIT A05B-2302-C080
CONTEMPOARY CONTROLS FANUC ARCNET NETWORK INTERFACE CARD PCA66-TPB
FANUC ROBOTICS ISA EXTENSION UNIT A02B-0236-C255
FANUC EE 4787 193 021 RJ3iB POWER FLEX CABLE, 21 M, 36 PIN MALE/FEMALE, NEW
FANUC ROBOTICS SERVO AMPLIFIER A06B-6058-H003
FANUC ROBOTICS 0.55m CABLE ASSEMBLY A660-4003-T429 *NEW*
FANUC ROBOTICS CABLE ASSEMBLY A660-4003-T447
FANUC PROCESSOR MAIN CPU PCB A16B-3200-0040/?06D W/ DAUGHTER BOARDS *DAMAGE #1*
FANUC PCB DAUGHTER BOARD A20B-2900-0380/?08C
FANUC ROBOTICS OPT2 OPTION BOARD A16B-2201-0850/?02A
FANUC B-65150E/03 PARAMETER MANUAL
FANUC ROBOTICS 10-SLOT PLC BACKPLANE ABU10A / A03B-0807-C001 *LOT OF 5*
FANUC ROBOTICS CABLE 44C74214-001R01
FANUC A20B-2902-0371/?02A DAUGHTER BOARD MEMORY MODULE, NEW
FANUC ROBOTICS CABLE 44C74214-004R01
GE FANUC 2A 16 POINT OUTPUT RELAY IC693MDL940H
FANUC POWER MATE SERVO AMPLIFIER A02B-0118-B003 W/ A16B-2300-0021/?02B *PLASTIC*
FANUC ROBOTICS OPERATOR PANEL CONNECTOR BOARD A20B-1003-0041/?02B
KOWA DENSO FANUC 0.2KVA TRANSFORMER A80L-0001-0342-?03
FANUC ROBOTICS E-STOP CONTROL BOARD A20B-1006-0300/?04B
FANUC PURGE ASSEMBLY MODULE A05B-2308-C040
FANUC ROBOTICS 125A 3-PHASE REACTOR A81L-0001-0078
FANUC ROBOTICS TRANSIT UNIT PCB A05B-2308-C030
FANUC CABLE ASSEMBLY A05B-1031-D005 *NEW*
FANUC ROBOTICS CONNECTION CABLE 44C741048-002R0?0 *NEW*
FANUC ROBOTICS CIRCUIT BOARD A16B-2200-0840/?08F
FANUC ROBOTICS GRAPHIC CPU BOARD A16B-2200-0160/?08B
FANUC BALLUFF ELEMO000000024O STD AXIS-2 ZONE SWITCH
FANUC ROBOTICS ISA EXTENSION UNIT A02B-0236-C269
FANUC ROBOTICS CABLE ASSEMBLY EE-3505-599-001 *NEW, LOT OF 2*
FANUC PCB DAUGHTER BOARD A20B-2902-0380/?02A
FANUC A SERIES AC SERVO MOTOR PARAMETER MANUAL GFZ-65150E/02
FANUC ROBOTICS I/O POWER SUPPLY CONNECTOR PANEL A05B-2351-H341-?K1 *NEW*
FANUC ROBOTICS 2.1kW 3-PHASE ALPHA SERIES AC SERVO MOTOR a12/2000 A06B-0142-B175
FUJI ELECTRIC FANUC 100A POWER DIODE MODULE 6RI100E-080
FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2900-0630/?050
FANUC ROBOTICS OPERATOR INTERFACE PANEL A05B-2440-C120
FANUC ROBOTICS INPUT MODULE AID16D A03B-0807-C104 *BROKEN PLASTIC*
FANCU ROBOTICS CIRCUIT BOARD PCB A16B-1211-0042/?06A
FANUC ROBOTICS DCR/DBR UNIT A05B-2302-C080 *NEW IN BOX*
FANUC ROBOTICS TOKUDEN SANGYOU 1.1KVA TRANSFORMER A80L-0001-0176-?04 *NEW*
FANUC ROBOTICS INTERFACE MODULE A02B-0259-C220
GE FANUC POWER CONNECTION BOARD 531X121PCRAAG1
FANUC ROBOTICS 800W DISCHARGE RESISTOR A06B-6089-H711
GE FANUC SERIES 90-30 PLC GENIUS ENHANCED COMMUNICATION MODULE IC693CMM302L
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FANUC A03B-0801-C425 / IA16E INPUT MODULE, REPAIRED
FANUC ROBOTICS OUTPUT MODULE AOA12F A03B-0807-C159
GE FANUC ROBOTICS VersaMax PROFIBUS-DP NIU MODULE IC200PBI001-BB
FANUC ROBOTICS 115VAC 5A DUAL OUTLET A05B-2051-C021
FANUC CIRCUIT BOARD PCB A16B-1200-0310/?02A
FANUC ROBOTICS aA64 PULSECODER A860-0360-V501 *THIN STYLE*
FANUC A97L-0218-0417 # 082525 SEAL BOLT, LOT OF 7, NNB
FANUC ROBOTICS SERIAL PORT BOARD A16B-2200-0210/?03A *PLASTIC*
ANALOGIC MEASUROMETER II 110VAC DIGITAL PANEL METER AN25M00-E-P-1-X?X-10-X
FANUC ROBOTICS INPUT UNIT A14B-0076-B001 *LOT OF 3*
FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2901-0320/?02B
FANUC SERIES 15B MAINTENANCE TRAINING MANUAL GFS-050D
FANUC ROBOTICS DAUGHTER BOARD PCB A20B-2900-0500/?04B
FANUC ROBOTICS SERVO AMPLIFIER UNIT A06B-6066-H012
FANUC OPERATOR INTERFACE CONNECTION BOARD PCB A16B-2200-0660/?04A *REPAIRED*
FANUC CIRCUIT BOARD PCB A16B-2200-0431/?03A
FANUC LTD I/O BASE UNIT A03B-0801-C012 *LOT OF 5*
FANUC ROBOTICS CABLE ASSEMBLY 44C741918-002R0?1
FANUC ROBOTICS CABLE ASSEMBLY 44C741873-001R0?1
FANUC PCB DAUGHTER BOARD A20B-2900-0530/?02A
FANUC ROBOTICS OUTPUT MODULE A0A08E A03B-0807-C158
FANUC 24VDC INPUT MODULE ID16C A03B-0801-C121
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FANUC ROBOTICS CIRCUIT BOARD A16B-2200-0840/?08F
FANUC CONTROL MOTOR AMPLIFIER A SERIES DEscripIONS MANUAL GFK-1363
FANUC DETECTOR ADAPTER CIRCUIT BOARD PCB A16B-1212-0030/?02B
FANUC ROBOTICS BACKPLANE BOARD A20B-9001-0040/?01A
FANUC CIRCUIT BOARD PCB A16B-1211-0062/?09B
FANUC ROBOTICS INPUT MODULE AAD04A A03B-0807-C051?
FANUC ROBOTICS 8 POINT I/O MODULE AOA08E A03B-0807-C158 *MISSING WIRING TERMINAL
FANUC ROBOTICS POWER SUPPLY BOARD PCB A20B-1000-0472/?03A
FANUC A06B-0533-B551 3-OS AC SERVO MOTOR
FANUC CRT OPERATOR INTERFACE UNIT A02B-0098-C045/?TBR
FANUC PCB DAUGHTER BOARD A20B-2902-0372/?02A
FANUC A230-0365-T002 POWER SUPPLY EXTENSION
FANUC SERIES 16 & 18 CONNECTION MANUAL GFZ-61803/04
FANUC ROBOTICS PSU BI POWER SUPPLY BOARD A16B-1212-0871/?18C *NEW*
FANUC ROBOTICS SPINDLE MOTOR FAN ASSEMBLY A90L-0001-0316/?R / A290-0754-T500
FANUC PCB DAUGHTER BOARD A20B-2900-0430/?03B
FANUC ROBOTICS PLASTIC SERVO MOTOR CAP A290-0511-X053 / A290-0511-X054
FANUC ROBOTICS SERVO AMPLIFIER A06B-6058-H011
FANUC ROBOTICS MAIN CPU CIRCUIT BOARD PCB A16B-1000-0200/?07D
GE FANUC OPERATOR INTERFACE PANEL 44C741055-G01
FUJI ELECTRIC TRANSISTOR A50L-0001-0179/?30A / 1DI30A-060
FANUC AC SERVO MOTOR 1O-S A06B-0312-B251
TOYO FANUC 100VAC COOLING FAN TE420A-8 A90L-0001-0100#?A
FANUC ROBOTICS 4-1/2IN x3INx2IN BATTERY BOX
FANUC ROBOTICS 10 SLOT BASE UNIT ABU10A A03B-0819-C001
FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2900-0380/?03B
FANUC PC ROM BOARD A16B-1200-0450/?02A
FANUC CABLE A660-8013-T613
FANUC 29" CABLE GROUND XGMF-14243 *NEW*
FANUC ROBOTICS PSU BI POWER SUPPLY BOARD A16B-1212-0531/?01A *NO COVERS*
FANUC ROBOTICS I/O MODULE BMD88A1 A03B-0808-C010
FANUC HORNER OPERATOR INTERFACE HE693OIU190F
FANUC ROBOTICS OPERATORS PANEL A05B-2051-C122
FANUC ROBOTICS ALPHA SERIES AC SERVO MOTOR 20S A06B-0502-B754 *NEW*
GE FANUC OS AC SERVO MOTOR A06B-0313-B574#?7008
FUJI ELECTRIC FANUC 800V 75A POWER DIODE MODULE 6RI75A-080
FANUC ROBOTICS ROM MEMORY CIRCUIT BOARD PCB A20B-0008-0480/?02A
GE FANUC 10- SLOT BASE IC693CHS391H
FANUC ROBOTICS PULSECODER CONNECTION CABLE EE-0989-318-001
FANUC PCB DAUGHTER BOARD A20B-2900-0380/?04B
FANUC PCB OPERATOR PANEL A16B-1213-0030/?03A
FANUC PCB DAUGHTER BOARD A20B-2901-0500/?02A
FANUC AXIS CONTROL CIRCUIT BOARD PCB A16B-1210-0970/?04B
FANUC ROBOTICS PSU POWER SUPPLY PCB A16B-1212-0871/?17C WITH A20B-2000-0600/?03A
FANUC PCB DAUGHTER BOARD A20B-2900-0480/?02A
HITACHI FANUC 100-110VAC COIL 50A MAGNETIC CONTACTOR A58L-0001-0294
FANUC PCB A16B-2200-013
FANUC ROBOTICS I/O EXPANSION MODULE A03B-0808-C230
FANUC PERTRONICS 30VA TRANSFORMER A80L-0001-0173#?A
FANUC A97L-0118-0390#?60A-66 RV GEAR REDUCER, NIB
FANUC SERIES 16i/18i/160i/18?0i/160is/180is-?TA OPERATORS MANUAL B-63004EN/02
GE FANUC 16 POINT RELAY OUTPUT MODULE IC693MDL940G *MISSING WIRING TERMINAL*
FANUC ROBOTICS COOLING FANS CABLE ASSEMBLY 4042-T009 *LOT OF 40*
FANUC ROBOTICS ALPHA SERIES a3 5.5KW AC SPINDLE MOTOR A06B-0853-B301
FANUC ROBOTICS CONTROL BOARD A20B-1003-0160/?01A
FANUC SERIES 16i/160i/160is/?18i/180i/180is/?... MAINTENANCE MANUAL B-63525EN/02
FANUC A05B-2051-C102 CRT / KB TERMINAL REPAIRED, Broken plastic
FANUC ROBOTICS ROBOT SWITCH NO-1800-670-001?A
FANUC 11 SLOT BACKPLANE BASE A03B-0819-C001
FANUC ROBOTICS TAPE READER UNIT A13B-0070-B001
FANUC ROBOTICS CONNECTION BOARD PCB A20B-1003-0044/?02B
FANUC ROBOTICS MAIN CPU PCB BOARD A16B-2200-0841/?06E W/ DAUGHTER BOARDS
FANUC R-J SOFTWARE REFERENCE MANUAL SUPPLEMENT SUPSMJALL01303E
FANUC ROBOT WRIST ASSEMBLY A05B-1313-J567 WITH A06B-0142-B675 SERVO MOTOR
FANUC PCB DAUGHTER BOARD A20B-2900-0500/?03B
FANUC PCB DAUGHTER BOARD A20B-2901-0080/?03C
FANUC ROBOTICS AC SERVO MOTOR a12/3000 A06B-0143-B175 #0008
FANUC MACHINE CONTROL STATIONS (OPERATORS PANELS) MANUAL GFK-0720
FANUC ROBOTICS 2.6M OPERATOR PANEL CONNECTION CABLE A660-2042-T017
FANUC ROBOTICS 230VAC COOLING FAN ASSEMBLY A06B-6078-K001
FANUC ROBOTICS FUJITSU DC VELOCITY CONTROL UNIT A06B-6047-H003 *DAMAGED #2*
FANUC ROBOTICS 115VAC INPUT MODULE AIA16G A03B-0807-C107
FANUC ROBOTICS INPUT BOARD A16B-1310-0660/?02A
FANUC A068-0128-8675 0008 SERVO MOTOR
FANUC ROBOTICS MASTER CONTROL BOARD A20B-2000-0180/?04B
FANUC SERIES 15 &150 APPENDIXES OPERATORS MANUAL GFZ-61220E/06
FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2901-0010/?04C
FANUC ROBOTICS I/O BOARD A20B-0008-0540/?01A
FUJI ELECTRIC 800V 20A TRANSISTOR MODULE A50L-2001-0232 / 6RI30FE-080
FANUC ROBOTICS MDI UNIT OPERATOR INTERFACE A02B-0303-C328
FANUC A06B-0128-B175-?R AC SERVO MOTOR
FANUC KAREL INSIGHT OPERATIONS MANUAL MAROKIVOH0883EG VERSION 2.20P
FANUC ROBOTICS OUTPUT MODULE AOA12F A03B-0807-C159 *MISSING WIRING TERMINAL*
FANUC ROBOTICS CABLE ASSEMBLY A660-8009-T070#?L15R53
FANUC ROBOTICS CONTROL BOARD A16B-1600-0320/?03A
FANUC A SERIES AC SERVO MOTOR PARAMETER MANUAL GFZ-65150E/02
FANUC SERIES 15-MODEL B PARAMETER MANUAL GFZ-62560E/01
FANUC ROBOTICS OPERATOR PANEL CONNECTOR BOARD A20B-1003-0041/?01A
FANUC CABLE A660-8013-T606
FANUC ROBOTICS SDU1 DETECTOR INTERFACE MODULE A02B-0236-C203
FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2900-0430/?04C
FANUC ROBOTICS MAIN-B CONTROL BOARD A16B-2201-0320/?05B
FANUC AXIS CONTROL CIRCUIT BOARD PCB A16B-2200-0250/?05C
FANUC SERIES 0,00,0-MATE FOR LATHE OPERATORS MANUAL GFZ-61394E/06
FANUC RIBBON CABLE A660-2040-T189
FANUC SERVO MOTOR a i SERIES MAINTENANCE MANUAL GFZ-65285EN/01
FANUC OPERATOR PANELS FOR I SERIES CONTROLS USERS MANUAL GFK-1478E
FANUC 11" OD, OIL SEAL A98L-0040-0047 UE 250 280 15 *LOT OF 2, NEW sealed*
FANUC PCB DAUGHTER BOARD A20B-2900-0390/?04A
FANUC ROBOTICS PCB DAUGHTER BOARD A20B-2900-0490/?01A
FANUC AD04A A03B-0801-C052 ANALOG INPUT MODULE, NNB
FANUC ROBOTICS BASE 2 CIRCUIT BOARD A16B-2200-0021/?06C
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