51402797-200

51402797-200

51402797-200

51402797-200

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苏州园林------苏妙玲

hotline------13394057292（微信同号）/0592-5856292

QAQ-----2851195480

www.zxdsolutions.com

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·软件措施：

    有的自检及保护功能。

①故障检测——软件定期地检测外界环境，如掉电、欠电压、锂电池电压过低及强干扰信号等。以便及时进行处理。

②信息保护与恢复——当偶发性故障条件出现时，不破坏PLC内部的信息。一旦故障条件消失，就可恢复正常，继续原来的程序工作。所以，PLC在检测到故障条件时，立即把现状态存入存储器，软件配合对存储器进行封闭，禁止对存储器的任何操作，以防存储信息被冲掉。

③设置警戒时钟WDT（看门狗）——如果程序每循环执行时间超过了WDT规定的时间，预示了程序进入循环，立即报警。

④加强对程序的检查和校验——一旦程序有错，立即报警，并停止执行。

⑤对程序及动态数据进行电池后备——停电后，利用后备电池供电，有关状态及信息就不会丢失。

    PLC的出厂试验项目中，有一项就是抗干扰试验。它要求能承受幅值为1000V，上升时间1nS，脉冲宽度为1μS的干扰脉冲。一般，平均故障间隔时间可达几十万～上千万小时；制成系统亦可达4～5万小时甚至更长时间。

Swagelok male tube adapter 1/4 T x 1/8 iso with NUT, SS-4-TA-1-2RS 1375D2

Deltronic Half-thou-Set Tenth Plug Gauge .7220 To .7335

Versa Solenoid Valve Four Way, KSG-4312-K30-6K-HC-3-D048, 1175K

Chaska 20217901, 202-179-01, With Fittings Shipsameday W/2-3daysshipping 1548A4

FUJI earth leakage circuit breaker 2P, 20A, EG52AC, EB2BEAC-020C 1538L

Swagelok Quick Connect Body 12mm, SS-QC8-B-12M0, SHIPSAMEDAY 118T8

Enidine  PM1525MF1, Ship Same With 2-3 Days Shipping 1653J

SWAGELOK 3-Way Ball Valve 1/4 FNPT, SS-44XF4, SHIPSAMEDAY131Q7

OMRON V600HS63, V600-HS63, NNB, Shipsameday 1209C

Pilz PNOV, PN0V, Safe Relay, 24V, PN0ZV30/24V, Shipsameday 129B2

GE Mark Century 1050, K-20143A, Shipsameday M6

WIKA Pressure Transmitter 25PSIG, 1/4 NPT, 50426788, SHIPSAMEDAY 124P2

Idec Power Supply Micro-1 Expansion FC1A-E2A4E, Shipsameday1627B14

SMC D-J79WAPC, D-J79W, Shipsameday, 1620A6

Schrader Bellows 697318009, 69731-8009, Ship Same Day W/2-3 Days Shipping 1639Z

BARDEN PRECISION BEARINGS Ceramic Hybrid CZSB101JX4, 0-11

BARDEN PRECISION BEARINGS Ceramic Hybrid CM204HJX335, 0-11

Moore Combustion Engineering 500U1166

Action Pak MDL4570-251,  ShipSameDay BOX B 1614B25

MDC VACUUM ANSI FLANGE BLANK CAP BOLT STYLE, NW200, 852003, SHIPSAMEDAY

SSAC Voltage Monitor Three Phase, WVM911AN, 400-480VAC, Shipsameday 1473A7

Burkert Solenoid SYST-5281, AFFNM86-12VDC, 2512-138792W, 230PSI 1222C

Sick WTB4-3P3161, WTB43P3161, ShipSameDay W2/3 DaysShipping 1630M

COLE-PARMER INSTRUMENT COMPANY 2630 Controller 12VDC 7A, 2ASB, 106D

Carling Circuit Breaker EA4-X0-09-597-12A-GB, SHIPSAMEDAY 1618Z

SWAGELOK Poppet Check Valve 1/4 VCR , SS-4C-VCR-TS-1, SHIPSAMEDAYH10

Eaton Inductive Sensor Tubular Housing E57LAL18A2SP, Shipsameday 1179Z1

ABB Manual Motor Starter MS116, 1SAM250000R1009 (2x) HKF1-11 (1X) 1643P3

Schmersal Monitoring Of BNS Range Magnetic, AES1235D, 24V, Shipsameday114A4

VEXTA Stepping Motor PH569-A-Q5, PH569AQ5, SHIPSAMEDAY 1535C7

SMC SOLENOID VALVE 24V, VQ1300-5, (VQ1H62) SHIPSAMEDAY 1624P

Pepperl+Fuchs RJ15-N, 106556, ShipSameDay With 2-3 Days Shipping 1612N

SWAGELOK Male O-Seal Connector 5/16Tx1/2-20 Male, SS-500-1-OR, 1631A4

Allen Bradley SLC500, Output Module 1746-0B32, 17460B32, Shipsameday 1226J

SICK OPTIC ELECTRONIC L40E21KA1A6027338, L40E-21KA1A SHIPSAMEDAY W/2-3DAYS1545N

Reliance Electric 527114,  Shipsameday 1226K

OMRON CONTROL OUTPUT PC BOARD, E53-Q4R4, SHIPSAMEDAY1474P7

OMRON CONTROLLER DIGITAL PROCESS, E53-CK03, SHIPSAMEDAY1474Q1

OMRON RELAY OUTPUT UNIT FOR E5CK, E53-R4R4, SHIPSAMEDAY1474Q2

HOFFMAN Connecting Terminal Plate Term 3P, 2-250MCM, HB01243

Rexroth P-052935-00002, P05293500002, (7877)-06 W 20 1559A13 

Swagelok Quick Connect Body 1/4 Low Profile, SS-QC4-B-400

TYC 15426182

FESTO EVALUATION UNIT SMH-AE1-PS3-M12, 175708, Shipsameday1558AC

IDT 557G-08LF, IC MUX 2:1 PCI-EXPRESS 16-TSSOP, 800-1065-5-ND V143

VALCOR SCIENTIFIC SOLENOID VALVE 24V, 1/2 FNPT, S218-9, SK2217, 1540K

Hoffman Wohner EASY Connectors Busbar, 32485, HB32485, EMC6000-L