工作環境對可靠性有很大的影響。塵埃不但會引起電接觸故障，而且可以降低絕緣性能、增加交流磁系統極面粘住的危險，因此必須采用必要的防塵措施。對于對可靠性要求較高的系統，控制元件應裝入塵埃不能侵人的罩殼或電柜內。機床上的控制元件常工作在有潤滑油或切削油的地方，這時必須選用防油型電器或采取防油措施。

1968年美國最大的汽車制造商―通用汽車（GM）公司，為適應汽車型號不斷更新，提出把計算機的完備功能以及靈活性、通用性好等優點和繼電器一接觸器控制系統的簡單易懂、操作方便、價格便宜等優點結合起來，做成一種能適應工業環境的通用控制裝置，并把編程方法和程序輸入方式加以簡化，使不熟悉計算機的人員也能很快掌握它的使用技術。根據這一設想，美國數字設備公司（DEC）于1969年率先研制出第一臺可編程序控制器（簡稱PLC），在通用汽車公司的自動裝配線上試用獲得成功。從此以后，許多國家的著名廠商競相研制，各自形成系列，而且品種更新很快，功能不斷增強，從最初的邏輯控制為主發展到能進行模擬量控制，具有數據運算、數據處理和通信聯網等多種功能。PLC另一個突出優點是可靠性很高，平均無故障運行時間可達10萬小時以上，可以大大減少設備維修費用和停產造成的經濟損失。當前PLC已經成為電氣自動控制系統中應用最為廣泛的核心裝置。

COMPTROL TENSIONCELL SINGLE RANGE M360-2-1 (115V)

ACCURAY 69242-002 LEM PC BOARD EXCELLENT CONDITION

ACCURAY 67461-003 PC BOARD EXCELLENT CONDITION

ACCURAY 64844-002 PRI PC BOARD EXCELLENT CONDITION

ACCURAY 2-067441-002 PCB BOARD EXCELLENT CONDITION

ALLEN BRADLEY 1794-IB10X0B6 NEW FACTORY SEALED

ALLEN BRADLEY 1336S LANGUAGE MODULE 42336-602-41 NEW

SPECTRUM CONTROLS SY/MAX 8000 RDO-716 RELAY OUTPUT MODU...

BOSCH 27568-405401 ABS RESOLVER DIGITIZER BOARD

TB WOODS PC62 REV E/A CONTROL BOARD BRAND NEW

WANDFLUH ED1 202D20 PROPORTIONAL VALVE CONTROLLER

LEUZE ELECTRONIC DDLS 170/120.2-4110 REFURBISHED

FANUC A860-0320-T111 PULSE CODER GOOD TAKE OFF

FAIRWAY 1006 FILIFORM LINE PROJECTOR NEW IN BOX

NORTH AMERICAN SHAFT ENCODER H3107 (NEW!)

HARDMEIER CONTROL DV 1Q DRIVE CH-8307 NEW IN BOX

YASKAWA JANCD- MM14C DF8203076/A0 *XLNT* CONDITION

YASKAWA JANCD-MM13 DF8203076/A0 MOTOMAN MEMORY BOARD

YASKAWA JANCD-HA03 REV.B MOTOMAN CARD *XLNT*

ALLEN BRADLEY 1398-DDM -009 SERVO DRIVE GOOD TAKEOUT

ALLEN BRADLEY 5431 8600 SERIES OASI BOARD

SIEMENS 500-5013 E-STAND BRAND NEW FACTORY SEALED
ALLEN BRADLEY 8600 1873L OSAI CNC BOARD

ALLEN BRADLEY 8600-882F OSAI CNC MODULE

GIDDINGS & LEWIS M.1011.2818 SPINDLE PROBE RECEIVER NEW

REXROTH 4WE6Y52/6AW120-60N9DALV HYDRAULIC VALVE (NEW)

LEUZE ELECTRONIC PRK 96K/P-1361-47 W/ BK7 KB-450-50004A

OKUMA E4809-770-033-1 RELAY CARD 1-1 XLNT CONDITION

HONEYWELL MICRO SWITCH FE MLS 1A PHOTOELECTRIC CONTROL

BARKSDALE L2H-H352S-WS TEMPERATURE SWITCH NIB

YASKAWA JANCD-MM14 MEMORY CARD

YASKAWA JANCD-HA03 REV.C MOTOMAN CARD *XLNT*

MAXITROL A200 SIGNAL CONDITIONAL ~ NIB

Hokuyo FC-5C-03 U Shaped Photo Sensor ~~~NIB

MITSUBISHI FCA MEMORY CARD (MC415B) BN624A992G51

ALLEN BRADLEY 1747-DCM DIRECT COMMUNCATION MODULE NIB

FANUC IC660EBD101F (RTD INPUT, 6 CHANNELS) GOOD TAKEOUT

FANUC A290-0601-T805 MULTI POLE RESOLVER GOOD TAKEOUT

ALLEN BRADLEY 1791-N4C2 ANALOG MODULE (NEW)
CINCINNATI MILARCON 3-533-0157G CONTROL BOARD GOOD TAKE...

CINCINNATI MILARCON 3-533-0158G CONTROL BOARD GOOD TAKE...

CINCINNATI MILACRON 3 531 3674A CONTROL BOARD GOOD TAKE...

FANUC A16B-1210-0820 /03A ADD I/O A1 GOOD TAKEOUT

BOSCH 0 811 405 079 AMPLIFIER CARD NEW IN BOX!!

PRECISION DEVICES INC. PGA-220-C0 AMPLIFIER

SIEMENS 6ES5312-3AB11 INTERFACE MODULE NEW IN BOX

FANUC A86L-0001-0149 KEYBOARD GOOD TAKEOUT

RICE LAKE WEIGHING SYSTEMS RL35023S-N5-2K LOAD CELL NEW

KITAMURA 3-E98652A CNC PCB CIRCUIT BOARD (NEW)

MITSUBISHI A2SCPU-S1 MELSEC CPU UNIT MAX 14K STEP GOOD ...

FANUC A16B-1210-0800 /09B GRAPHIC / MPG GOOD TAKEOUT

SUPERIOR SLO-SYN SS241TG9 SYNCHRONOUS MOTOR 1 PH. NIB

MITSUBISHI BN624A263H03 (FX62B) GOOD TAKEOUT

SQUARE D SL400 I-LINE PLUG-ON LUGS SUB-FEED 400 AMP GOO...

SIEMENS 6ES7 153-2AB01-0XB0 (E STAND) XLNT CONDITION

RELIANCE ELECTRIC 57C407-47 DCS 5000 PROCESSOR GOOD TAK...

MODICON AS-5378-002 BATTERY BACK UP GOOD TAKEOUT

SICK WSU 26/2-220 PHOTOELECTRIC SENDER TYPE-4 (115 VAC)...

ALLEN BRADLEY 634486 MEMORY MODULE 7300UPG5

SIEMENS 6ES7 222-1BH30-0XB0 CONTROL MODULE NEW IN BOX

MODICON B885-001 BASIC MODULE (12 VAC) GOOD TAKEOUT

CCI POWER SUPPLY WI25-371-99/XP (NEW)

ABB (ASEA DSQC 140) POWER SUPPLY GOOD TAKEOUT!

Enlarge
SPECTRUM CONTROLS 8000 RDI-132 DIGITAL INPUT MODULE

FANUC A16B-1200-0450/02A (ROM) GOOD TAKEOUT

ALLEN BRADLEY UPJ2 MICRO CONTROL 634489

ALLEN BRADLEY 7300-UCJ1 DNC INTERFACE 634385 (REMAN)

ALLEN BRADLEY 7300-UCQ2 TAPE READER 634951 (REMAN)

FUJI UMI5A-D 14 (I/O CARD) GOOD TAKEOUT

FUJI UMI5A-C (F 7705910 (2) A) TR-O CARD GOOD TAKEOUT

OKUMA OSP3000 E/C I/O ISOLATION (E4809-045-0110-C)
FISHER ROSEMOUNT CL7001X1-A9 CONFIG CONTROLLER

PHOENIX CONTACT QUINT-PS-100-240VAC/24DC/2,5 POWER SUPP...

DOMINO 23163 FAULT MONITOR BOARD GOOD TAKEOUT

SIEMENS MC S85 OPERATOR PANEL (853 362) GOOD TAKEOUT

DOMINO 21418 POWER SUPPLY GOOD TAKEOUT

DIGITAL LOGIC 02-777811 CONTROL CARD GOOD TAKEOUT

I.T.E. CIRCUIT BREAKER CAT# FJ63B200 GOOD TAKEOUT

MITSUBISHI MELSEC NET/MINI AJ35TP-BU CONTROLLER

DAYTRONIC DS6000A TRANSDUCER LINEAR SENSOR (REPAIRED)

FES 726-00201C PROCESSOR BOARD USED GOOD TAKEOUT

RELIANCE ELECTRIC 0-58772-310 CONTROL BOARD (NEW)

FORCE CONTROL BOARD SYS68K ISI0-2/C2 (P/N 220062)

SICK PS95W-24V-ENC (4 AMP POWER SUPPLY) 100-120/200-240...

MODICON AS-B350-001 OUTPUT MODULE NEW IN BOX

SIEMENS 6ES7 307-1KA01-0AA0 POWER SUPPLY GOOD TAKEOUT

SIEMENS 6ES7811-0CA01-0YX2 (SIMATIC S7 , S7 GRAPH) FACT...
RELIANCE 0-57170-2E DRIVER BOARD GOOD TAKEOUT

CLEAVER BROOKS 833-2419 KEYBOARD/DISPLAY MODULE GOOD TA...

VERO PK 100 MONOVOLT 116-17509 POWER SUPPLY GOOD TAKEOU...

METTLER TOLEDO D15345400A 15VDC ANALOG A/D GOOD TAKEOU...

TOL-O-MATIC PRECISION AIRE 36049607 ,1.5" W/O KYPD/DSPL

CINCINNATI MILACRON 3-531-3282A PC BOARD ASSEMBLY

ALLEN BRADLEY 135254 ,SPARE PARTS (140067) SURPLUS NEW

NACHI UM795D (11-89100037) MEC-40V-0 GOOD TAKEOUT

MOELLER EM4-101-AA2 ANALOG MODULE GOOD TAKEOUT

TRI-ONICS 426C02006-003 ENCODER GOOD TAKEOUT

ISSC 621-9935 INTERFACE MODULE SERIAL I/O GOOD TAKEOUT

FANUC A05B-2400-C060 (2 SLOT) BACKPLANE GOOD TAKEOUT

MODICON AM-C916-100 CPU RECONDITIONED

INDRAMAT RECO G.06/01-FW (8 SLOT I/O RACK) GOOD TAKEOUT

REXROTH/INDRAMAT RECO-E.00/01 EXPANSION RACK (USED)

CUTLER HAMMER D120PM8 CONTROL MODULE GOOD TAKEOUT

OMRON C500-RM001-PEV1 REMOTE I/O UNIT GOOD TAKEOUT