一般而言，PLC的基本電源一般有使用ACIOOV/240V與DC24V兩種類型。
當PLC采川ACIOOV/240V供電時，通常允許輸入電源電壓的波動范圍為-15%～+10%。如：選擇額定輸入電壓為AC100V時，通常允許輸入電壓的變化范圍為AC85～110V;選擇額定輸入電壓為AC240V時，允許的變化范圍為AC200—AC264V。PLC對外部交流電源的頻率要求較低，允許的頻率變化范圍通常為±3Hz，即選擇額定輸入頻率為50Hz時，允許輸入頻率的變化范圍為47～53Hz;選擇額定輸入頻率為60Hz時，允許變化范圍為57～63Hz。
備貨，備貨，降降降，火火火，火火火……
備貨，備貨，降降降，火火火，火火火……
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FANUC A06B-6058-H005 SERVO AMPLIFIER
ALLEN BRADLEY 1336-155789
ALLEN BRADLEY 140578 TRANSISTORS
ALLEN BRADLEY 1336-140558
ALLEN BRADLEY VOLT SHARING 1336-155977
ALLEN BRADLEY 1336-140554
TEXAS INSTRUMENTS 530-1108 NO KEY AVAILABLE
ALLEN BRADLEY 2711-K10G8 SERIES A
GENERAL ELECTRIC DS380CDGRA1E1C BOARD
GENERAL ELECTRIC CR341D044BBB1FA PUMP CONTROL PANEL (AS PICTURED)
DIAGRAPH INK JET SYSTEM 8701992
MODICON AS-2802-000
GETTYS M235-H6K0-3G0S-AA
CUTLER-HAMMER JDB3150W CIRCUIT BREAKER
HONEYWELL 51305072-400 REV.G PC BOARD
ALLEN BRADLEY 1336S-BRF30-AN-EN SERIES D AC DRIVE
ACE TRONICS GPD515C-B034
FANUC A20B-8100-0470/06D
SIEMENS 6SN1118-0NJ00-0AA2 CONTROLLER
ALLEN BRADLEY 505-COD SERIES C STARTER
LOT OF 3 SQUARE D NETWORK INTERFACE MODULE 8030 PS25 SER.A1
LOT OF 10 ALLEN BRADLEY 1734-IB8 SER D INPUT MODULE DATE CODE 03/17/12
YASKAWA SG-DB-15ADG SERVO PACK IN THE BOX*
ALLEN BRADLEY 440L-P4J0480YD SERIES A SAFETY LIGHT CURTAIN
FANUC A20B-1003-0240/09B BOARD
FANUC A20B-1003-0240/07B BOARD
CUTLER HAMMER GA210TC30-A RESPONDER DRIVE
ALLEN BRADLEY 1336VT-B005-EAN-FA2-L1 ( UNIT)
CROUSE HINDS AP40468
ABB EH450C
GENERAL ELECTRIC DS3800NHVJ1A1A HIGH VOLT POWER PC BOARD
ABB 57298791 BOARD
CINCINNATI MILACRON IFT5072-0AC71-1-Z0
MODICON SERVO MOTOR S33F-A00-F0V0
EMECANIQUE ATV6HD15N4
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RELIANCE 5V4160 DRIVE
FOXBORO 800HA-WCR-PJGFGZ-A (AS PICTURED)
FUJI ELECTRIC 6KG1143015X1B1
GE FANUC A06B-00143-B075#7076 SERVO MOTOR
YASAKAWA BOARD ETC670553-S1421
ALLEN BRADLEY 8500-E153 SERIES A DIGITAL I/O
BAILEY IMLM01
ALLEN BRADLEY MPL-B4530K-MJ74AA SERIES A
GE FANUC IC697BEM731M
GE FANUC IC697BEM731R
SEALED SQUARE D KHL36150 CIRCUIT BREAKER
GE FANUC IC600RM715K DATA STORAGE
ABB CONTROL BOARD 2.408.140.21
ABB CONTACTOR EH175C-4 IN THE BOX*
WEG CACFW090007T5060ESZ
INDRAMAT DIGITAL AC SERVO CONTROLLER DDS02.1-A150-D
SBS 82002058 PC BOARD
GE FANUC IC660BBS103M
ALLEN BRADLEY 2094-AL15S SERIES B
SIEMENS 6ES7 132-0HF00-0XB0
SIEMENS 6ES7 131-0HF00-0XB0
FOXBORO 2AX+SUM MODULE PLUG-IN
G & L MOTION CONTROL MSM215-319-304-S-OKA
ALLEN BRADLEY 9101-1458
SCHNEIDER ELECTRIC TSXETY5103
CONTROL TECHNIQUES PCM-11
SICK S30A-4011B4 (AS PICTURED)
GE FANUC IC697MDL940D OUTPUT MODULE 16PT SIGNAL RELAY
GE FANUC IC697CPU731X CENTRAL PROCESSOR
ROSEMOUNT PNT10S007HADS0S00002A1A TRANSMITTER
LOT OF 2 MINISTER 490-0253
SCHNEIDER AUTOMATIC INC. M0T202/AS-BM0T-202
SEALED DATE 12/94 ALLEN BRADLEY 1771-IFE SERIES A
WESTINGHOUSE 2D81400G10 CONTROLLER
SQUARE D LAL26200 THERMAL-MAGNETIC CIRCUIT BREAKER
DAYTRONIC 3530 (NO POWER CORD)
CONTRAVES AA35EW16M047 AC SERVO
SEALED GE FANUC IC660-EBA025K
CUTLER HAMMER GA210TC30-A RESPONDER DRIVE
NORTHSTAR R81024LE081LC
DODGE HB381CN140TC GEAR MOTOR
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BBC 05-MA-22 SPEED REGULAT
ALLEN BRADLEY 512-BJB-1-6P-24 SERIES 1 COMBINATION STARTER
CUTLER-HAMMER Fi3225L CIRCUIT BREAKER
ALLEN BRADLEY 20AE017A0AYNNNC0 SERIES A
GE FANUC BLOCK IC660BBD025V
LENZE EVS9321-ES SERVO CONTROLLER
ALLEN BRADLEY 1336F-BRF100-AA-EN-HAS2-L6 SERIES A
MODICON AS-984A-816 MOUNTING RACK
REMANUFACTURED ALLEN BRADLEY 1336SNSP21A
LINCOLN 81740 4 WAY HYDRAULIC VALVE
DAYTRONIC FREQUENCY CONDITIONER CONTROLLER 3340A
NORDSON 230260S CONTROL PANEL
HUBBELL HBL460MIF5W
CROUSE HINDS WSRDW6352 SAFETY DISCONNECT SWITCH
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RELIANCE 6SP501-9P0CTNN
SMC PROY-Q1JJ2427
WARNER ELECTRIC SS2000D3I STEPPER DRIVE AND CONTROL
SQUARE D SY/MAX 8030-CRM275
當PLC使用DC24V電源時，一般允許輸入電壓的變化范圍為一l5%～+20%(即DC20.4～28.8V，如SIEMENS PLC)，部分PLC可以達到-35%—+30%（即DC15.6～31.2V，如三菱Q系列PLC）。與其他計算機控制系統(tǒng)相比，它對輸入電源的要求相對較低，通常容易滿足要求。
但為了保證PLC的正常工作，抑制線路干擾，對于交流AC100V/240V供電的PLC，原則上應在電源輸入回路加入隔離變壓器、浪涌吸收器或者采取穩(wěn)壓措施。PLC輸入電源要與設備動力電源、交流控制回路電源、交流輸出電源分離配線，并具有獨立的保護回路與獨立的隔離變壓器。
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