描述
延時(shí)控制通常應(yīng)用在開關(guān)量控制的場合,當(dāng)一個(gè)開關(guān)狀態(tài)變化時(shí)(比如由開變關(guān)時(shí)),控制器的輸出動(dòng)作要延時(shí)一段時(shí)間才會(huì)給出。比如,在生產(chǎn)線常用的接近開關(guān),當(dāng)工件就位時(shí),接近開關(guān)給出信號(hào),下一個(gè)滾筒由于和接近開關(guān)安裝的位置有一段距離,所以通常要延遲幾秒才開始滾動(dòng)。連鎖控制也是常用于開關(guān)控制的場合,比如有三個(gè)開關(guān),A、B和C,C開關(guān)必須在A和B同時(shí)打開的時(shí)候,才能夠打開;或者當(dāng)A打開時(shí),C必須打開;這種關(guān)系就是連鎖控制。在工業(yè)現(xiàn)場中,尤其是在涉及安全控制的場合,連鎖控制方式是很常見的。比如反應(yīng)釜中的放散閥,當(dāng)壓力達(dá)到一定值時(shí),壓力開關(guān)的信號(hào)發(fā)生變化,則放散閥門必須立刻打開。電動(dòng)控制指控制系統(tǒng)的輸出是通過電氣量或電子信號(hào)來進(jìn)行的,所控制的對(duì)象是電動(dòng)執(zhí)行元件,比如繼電器、步進(jìn)開關(guān)、電磁閥、伺服驅(qū)動(dòng)器和變頻器等等,絕大部分的自動(dòng)控制多多少少都會(huì)有電動(dòng)控制元件。液壓控制在機(jī)器與設(shè)備的操作中,許多控制是用液壓控制機(jī)構(gòu)來進(jìn)行的。在連續(xù)速度控制的場合,液壓控制通常比較方便和便宜,當(dāng)能量轉(zhuǎn)換效率較高的時(shí)候,液壓控制往往和電動(dòng)控制中的伺服控制同時(shí)使用。這時(shí),就形成了效率和精度較高的電液執(zhí)行機(jī)構(gòu)。氣動(dòng)控制有三種情形用到氣動(dòng)執(zhí)行機(jī)構(gòu):運(yùn)動(dòng)的線路上有標(biāo)準(zhǔn)的單向氣動(dòng)閥門組合來完成控制邏輯功能;在氣體管道中采用一些沒有移動(dòng)部件的元件,這些元件是依靠流過的氣體的特性而進(jìn)行開關(guān)動(dòng)作的;運(yùn)動(dòng)的邏輯控制系統(tǒng),采用模塊化的內(nèi)置隔膜、繞線或套筒式。這三種氣動(dòng)元件都是采用壓縮空氣作為傳輸信號(hào)或執(zhí)行機(jī)制的動(dòng)力。在工廠中,由于壓縮空氣容易獲得,干凈、無污染,又安全,控制的功能和設(shè)計(jì)都十分簡單,因此,現(xiàn)在許多生產(chǎn)線上采用氣動(dòng)工具。
產(chǎn)品承諾:
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢(shì)價(jià)格,大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌:ABB???,AB??,GE,FOXBORO,本特利,英維思,伍德沃德,西屋,瑞恩,施耐德,西門子,摩托羅拉,安川。力士樂。ACSO,橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
WESTINGHOUSE JB3200W 200A BREAKER NEW JB3200W
MAGNETEK F-29U TRANSFORMER NEW F29U
HONEYWELL 1LN1-5-LH SWITCH NEW 1LN15LH
BRADY PTL-30-427 THERMAL LABELS NEW PTL30427
AMETEK 4M949 VACUUM MOTOR NEW 120V 4M949
NAMCO EB700-60501 SOLENOID NEW EB70060501
DIVERSIFIELD ELECTRONICS PRT-100 TESTER PRT100
TELEMECANIQUE LC2D12G7 120V CONTACTOR NEW LC2D12G7
HUBBELL HBL430C5W 30A CONNECTOR NEW HBL430C5W
HONEYWELL PRESSURE CONTROL L91A1078 NEW L911A 1078
E & E ENGR CLEVIS E-1576 NEW E1576
E & E ENGR CLEVIS E-1575 NEW E1575
E & E ENGR CLEVIS E-1394NEW E1394
SCHMERSAL ELAN TESZ 1110/45 NEW TESZ-1110/45
PACIFIC SCIENTIFIC E31NLHB-LNN-NS-?00 1.8 STEP MOTOR NEW
STATIC O RING 6NN-CA2-N4-CIA REMAN 6NNCA2N4CIA
CONTROL TECHNOLOGY TCAM-5230 ACCESS MODULE TCAM5230
ILSCO IK-750 SPLIT BOLT NEW IK750
HONEYWELL V703 7D-1007-1 SERVO VALVE V7037D10071
GE CL45D310MD NEW CONTACTOR
MAGNETEK SPB2-6-WA PUSH BUTTON PENDANT NEW SPB26WA
RED LION CONTROLS PRSI-001 NEW SPEED SWITCH PRSI001
BIMBA PT-017145-A1C1R ACTUATOR NEW PT017145A1C1R
GENERAL ELECTRIC CR7RB31EL NEW CONTROL RELAY
GENERAL ELECTRIC CLXA01 NEW SIDE MOUNT AMPLIFIER
SMC AMC-EL5 NEW FILTER AMCEL5
RUSSELLSTOLL F30040 RECEPTACLE NEW F30040
FUJI ELECTRIC SC-N2 3NC1Q0E22 NEW CONTACTOR
ENERPAC MB-1 STATION MANIFOLD NEW MB1
ROBERTSHAW 5210-401 THERMOSTAT NEW 5210401
CROUSE HINDS CHICO A4 SEALING COMPOUND NEW A4
AO SMITH JA1N625N ELECTRIC MOTOR NEW JA1N625N 115V
WESTERN CULLEN HAYES 38-0050-600 RELAY NEW 380050600
BALLUFF BIS C-306-05 NEW BISC30605
ANCHOR SCIENTIFIC SOLO FLOAT D30NO-115 NEW D30NO115
SIMPSON MODEL 2154 05D700 NEW
STI MICRO SAFE SAFETY LIGHT CURTAINS 36″
BANNER SM31ELQD NEW MINI-BEAM
SIMPSON MODEL 1257 02580 METER NEW
DAZIC 8121 S SPEED SWITCH NEW 8121S
BANNER 16277 NEW LENS FOR FIBER OPTIC 16277
ALLEN BRADLEY 700-R220A1 RELAY USED 700R220A1
VACTRAP VT-1A NEW VT1A
ALLEN BRADLEY RELAY 700-N400A1 SER C W/ 700-NA40 SER B
ALLEN BRADLEY RELAY 700-N400A1 SER B USED 700N400A1
CROUSE HINDS NPJ3484 30A PLUG NPJ3484
SQUARE D FAL34100 CIRCUIT BREAKER USED
CROUSE HINDS APJ3475 30A PLUG NEW APJ3475
CONTROL SYSTEMS INTERNATIONAL CSI 330125-02B BOARD NEW
CROUSE HINDS AR1031 100A PLUG AR1031
CROUSE HINDS APJ10377 100A PLUG APJ10377
ALLEN BRADLEY 1791-D16B0X NEW 1791D16B0X SERIES D
CROUSE HINDS APJ6483 60A PLUG APJ6483
FESTO TYPE QH-1/2 SERIES U 9543 0-30 NEW BALL VALVE
TYCO ELECTRONICS 4000Y01V18BC227 TRANSFORMER NEW
ALLEN BRADLEY 700-RTC01100U24 NEW 700TRC01100U24
MARPOSS E48 8304830010 NEW
BALLUFF BISC650 NEW BIS C-650
FEDERAL SIGNALS FB2PST-120G FIREBALL NEW 120VAC
DYNEX RIVET INC. 9431D NEW 9431D
ABB AL26-30-10 NEW AL263010
FESTO ELECTRIC LFR12D5MMIDIA NEW LFR-1/2-D-5M-MI?DI-A
HONEYWELL 914CE2-12 MICRO SWITCH NEW 914CE212
REXROTH INDRAMAT DKC02.3-040-7-F?W NEW DKC0230407FW
BIMBA DWC-175-2 CYLINDER NEW DWC1752
FANUC A06B-6088-H230#?H500 REMAN. A06B6088H230H50?0
ALLEN BRADLEY 700-HN101 SOCKETS NEW 700HN101 QTY. 4
FANUC A20B-2902-0060 USED A20B29020060
FANUC A20B-2901-0941 USED A20B29010941
FANUC A20B-2901-0981 USED A20B29010981
ALLEN BRADLEY 700-HA32A1-4 SER. C NIB 700HA32A14
ALLEN BRADLEY 700-HA32A24 SER. D NIB 700HA32A24
RELIANCE ELECTRIC 2SR41800 USED SNUBBER RESISTOR
SIERRA INSTRUMENTS 730-N1-1-E7-PV2?-V4-0 NEW
SIERRA INSTRUMENTS 730-N3-1-E7-PV2?-V4-0 NEW
BODINE GEARMOTOR 42R5BFCI-E3 115V 1/6 HP
LEBOW 3173-3K USED LOAD CELL 31733K
BALLUFF BLFBKSS32M30 TRANSDUCER CABLE NEW
MOSIER AIRSERV A0377A1 2X4 AIR CYLINDER NEW
MORSE B210A NEW CAM CLUTCH B210A
CUTLER- HAMMER T602LD NEW TERMINAL LUG T602LD
TYCO 4000Y01V18BC227 NEW TRANSFORMER 4000Y01V18BC227
UNISTRUT P1006-1024EG NEW BOX OF 100PCS. P10061024EG
HARRIS MODEL 9200 COMPRESSED GAS REGULATOR NIB OXYGEN
ORTMAN PNEUMATIC CYLINDER 3TH J 2.000 X 24.OO NIB
ACME TRANSFORMER TB-81216 NEW TRANSFORMER TB81216
SOR PRESSURE SWITCH 6NN-CA2-N4-C1A NEW 6NNCA2N4C1A
GARDNER DENVER 1K1A 926869 USED 1K1A926869
BOSCH 9 810 161 174 NEW 9810161174
DE-STA-CO PLUNGER CLAMP MODEL 608 NEW DESTACO 608
YOKOGAWA UT420 CONTROLLER NEW
CAMCO 92A61633010000 USED DRIVE 92A61633010000
Texas Instruments 500-5011 110 VAC Output TI 5005011
ADVANCED MICRO CONTROLS INC. 1331 USED ENCODER 1331
TEXAS INSTRUMENTS 500-5055 USED 5005055
FANUC IC693MDL940H USED OUTPUT MODULE IC693MDL940H
FANUC IC693PWR321T USED MODULE IC693PWR321T
TEXAS INSTRUMENTS 500-5047-A USED 5005047A
MICROTEK STEP500-T USED STEP500T
TEXAS INSTRUMENTS 500-5023 USED 5005023
TELEMECANIQUE ATV31HU40N4A USED SPEED DRIVE
TEXAS INSTRUMENTS 500-5035 USED 5005035
LOAD CONTROLS INC PCR-1800-R1 REFURBISHED PCR1800R1
MAC VALVES PME-111DABE NEW PILOT VALVE PME111DABE
ACOPIAN VB24G350 USED POWER SUPPLY VB24G350
OHMITE RHS1K5 NEW RHEOSTAT RHS1K5
MILLER 051-KR015-100 NEW KIT 051KR015100
PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家