900A01-0202
900A01-0202
【廈門莫格電氣自動(dòng)化有限公司】
【本公司擁有所有產(chǎn)品專業(yè)檢測(cè)平臺(tái),產(chǎn)品質(zhì)量嚴(yán)格把關(guān)】
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影響現(xiàn)場(chǎng)輸入給PLC信號(hào)出錯(cuò)的主要原因有:
1)造成傳輸信號(hào)線短路或斷路(由于機(jī)械拉扯,線路自身老化,特別是鼠害),當(dāng)傳輸信號(hào)線出故障時(shí),現(xiàn)場(chǎng)信號(hào)無(wú)法傳送給PLC,造成控制出錯(cuò);
2)機(jī)械觸點(diǎn)抖動(dòng),現(xiàn)場(chǎng)觸點(diǎn)雖然只閉合一次,PLC卻認(rèn)為閉合了多次,雖然硬件加了濾波電路,軟件增加微分指令,但由于PLC掃描周期太短,仍可能在計(jì)數(shù)、累加、移位等指令中出錯(cuò),出現(xiàn)錯(cuò)誤控制結(jié)果;
3)現(xiàn)場(chǎng)變送器,機(jī)械開(kāi)關(guān)自身出故障,如觸點(diǎn)接觸不良,變送器反映現(xiàn)場(chǎng)非電量偏差較大或不能正常工作等,這些故障同樣會(huì)使控制系統(tǒng)不能正常工作。
影響執(zhí)行機(jī)構(gòu)出錯(cuò)的主要原因有:
1)控制負(fù)載的接觸不能可靠動(dòng)作,PLC發(fā)出了動(dòng)作指令,但執(zhí)行機(jī)構(gòu)并沒(méi)按要求動(dòng)作;
2)控制變頻器起動(dòng),由于變頻器自身故障,變頻器所帶電機(jī)并沒(méi)按要求工作;
3)各種電動(dòng)閥、電磁閥該開(kāi)的沒(méi)能打開(kāi),該關(guān)的沒(méi)能關(guān)到位,由于執(zhí)行機(jī)構(gòu)沒(méi)能按PLC的控制要求動(dòng)作,使系統(tǒng)無(wú)法正常工作,降低了系統(tǒng)可靠性。要提高整個(gè)控制系統(tǒng)的可靠性,必須提高輸入信號(hào)的可靠性和執(zhí)行機(jī)構(gòu)動(dòng)作的準(zhǔn)確性,否則PLC應(yīng)能及時(shí)發(fā)現(xiàn)問(wèn)題,用聲光等報(bào)警辦法提示給操作人員,盡快排除故障,讓系統(tǒng)安全、可靠、正確地工作。
INDRAMAT AC SERVO MOTOR MAC112B-0-GD-3-?C/180-A-0/S011 *PINS*
INDRAMAT 3-PHASE INDUCTION SERVO MOTOR 2AD100D-B050R5-?AS03-A2N1, DAMAGED PLUGS
INDRAMAT AC MAINSPINDLE SERVO DRIVE RAC 3.5-150-460-A00?-W1-220 *PARTS/REPAIR*
INDRAMAT 3-PHASE INDUCTION SERVO MOTOR 2AD132D-B350A1-?AS13-A2N1 *PARTS/REPAIR*
INDRAMAT AC MAINSPINDLE DRIVE RAC 2.2-250-460-A00?-W1 *PARTS OR REPAIR*
INDRAMAT DIGITAL BRUSHLESS SERVO MOTOR MDD112D-N-030-N?2L-130PB0 *PLUG*
INDRAMAT AC SERVO MOTOR *MISSING LABEL*
INDRAMAT AC SERVO AMPLIFIER DSC 3.1-100-115V *PARTS/REPAIR*
INDRAMAT DIGITAL AC SERVO CONTROLLER DDS02.1-W100-D *PLUG*
BOSCH INDRAMAT SERVO DRIVE CONTROLLER VMA-021KR 001-D / D-64711 *PARTS/REPAIR*
INDRAMAT RECO INTERBUS 24VDC INPUT MODULE RME12.2-32-DC02?4
INDRAMAT RECO 24VDC OUTPUT MODULE RMA12.2-16-DC02?4-200
MOTION INDUSTRIES 1/2" SIZE BALLS FOR LINEAR BEARINGS 722B44314 *NEW LOT 14*
NSK 53" PRECISION BALL SCREW W4509-298DT-C5Z / 05M2-0001, NEW
23-1/2" OAL, 5" BALLNUT, 1" JOURNAL, BALL SCREW 79356 T81023 *NEW*
THK HR50105UU+1270L (2) LINEAR MOTION GUIDE RAILS (4) LINEAR MOTION BEARINGS NEW
36"OAL, 33" TRAVEL, 3TPI, 2.223", BALLSCREW W1896 *NEW*
THK 6-3/4 INCH OAL, LINEAR GUIDE RSR15ZM *NEW*
THREAD CRAFT, INC T-1425 COMMERCIAL BACKLASH BALLSCREW, OAL 62 DIA 2-1/8, NNB
MAGNETIC ELEKTROMOTOREN 24V 5A MAX30-A300515A2?510A-000 L03529178
THK HRW35CA2SSC1+28?0 LINEAR GUIDE RAIL NEW IN BAG
IKO 53&1/2" 17 HOLE LINEAR ROLLER WAY GUIDE RAIL, SET OF 2
THOMSON 4-HOLE LINEAR RAIL, 12-1/2" LONG 105524
NUMATICS 11/16" BORE 9" STROKE LINEAR SLIDE, SH-150-09-BB-1-?5-6-DS4 *NEW*