PTAI216 BACHMANNPTAI216 BACHMANN

*處理單元(CPU)是PLC的控制中樞。它按照PLC系統(tǒng)程序賦予的功能接收并存儲從編程器鍵入的用戶程序和數(shù)據(jù)；檢查電源、存儲器、I/O以及警戒定時器的狀態(tài)，并能診斷用戶程序中的語法錯誤。當PLC投入運行時，首先它以掃描的方式接收現(xiàn)場各輸入裝置的狀態(tài)和數(shù)據(jù)，并分別存入I/O映象區(qū)，然后從用戶程序存儲器中逐條讀取用戶程序，經(jīng)過命令解釋后按指令的規(guī)定執(zhí)行邏輯或算數(shù)運算的結(jié)果送入I/O映象區(qū)或數(shù)據(jù)寄存器內(nèi)。等所有的用戶程序執(zhí)行完畢之后，zui后將I/O映象區(qū)的各輸出狀態(tài)或輸出寄存器內(nèi)的數(shù)據(jù)傳送到相應(yīng)的輸出裝置，如此循環(huán)運行，直到停止運行。
為了進一步提高PLC的可*性，近年來對大型PLC還采用雙CPU構(gòu)成冗余系統(tǒng)，或采用三CPU的表決式系統(tǒng)。這樣，即使某個CPU出現(xiàn)故障，整個系統(tǒng)仍能正常運行。

鄭娟萍

廈門仲鑫航自動化設(shè)備有限公司  

PLC的工作原理
一. 掃描技術(shù)
當PLC投入運行后，其工作過程一般分為三個階段，即輸入采樣、用戶程序執(zhí)行和輸出刷新三個階段。完成上述三個階段稱作一個掃描周期。在整個運行期間，PLC的CPU以一定的掃描速度重復(fù)執(zhí)行上述三個階段。
(一) 輸入采樣階段
在輸入采樣階段，PLC以掃描方式依次地讀入所有輸入狀態(tài)和數(shù)據(jù)，并將它們存入I/O映象區(qū)中的相應(yīng)得單元內(nèi)。輸入采樣結(jié)束后，轉(zhuǎn)入用戶程序執(zhí)行和輸出刷新階段。在這兩個階段中，即使輸入狀態(tài)和數(shù)據(jù)發(fā)生變化，I/O映象區(qū)中的相應(yīng)單元的狀態(tài)和數(shù)據(jù)也不會改變。因此，如果輸入是脈沖信號，則該脈沖信號的寬度必須大于一個掃描周期，才能保證在任何情況下，該輸入均能被讀入。

DEMAG Dematic DC  LDBV 380Z045D00   LDBV 380 Z 045 D 00

INDRAMAT DSS02.2-W100-BE12-01-FW Frequenzumrichter

INDRAMAT DDS02.2-W100-BE76-01-FW Frequenzumrichter

INDRAMAT DDS02.2-W100-BE31-01-FW Frequenzumrichter

Indramat DDS02.2-W100-BE12-01-FW    

INDRAMAT TDM1.2-050-300-W1-000  TDM 1.2-050-300-W1-000 -used-

INDRAMAT NAM 1.2-15  NAM1.2-15  Netzanpassungsmodul

Indramat TDM 3.2-020-300-W0    TDM3.2-020-300-W0

INDRAMAT TVD 1.3-15-03  TVD1.3-15-03 Power Supply Versorgungsmodul

INDRAMAT TDM 1.2-050-300-W1-0  TDM1.2-050-300-W1-0 Frequenzumrichter

SEW EURODRIVE MOVITRAC 3007-403-4  SachNr. 8256519 - used -

SEW Eurodrive MDx60A0110-5A3-4-00 S-Nr. 08226857 + MDX61B0110-5A3-4-0T -used-

SEW MOVIDYN MP 5011 AD 00   MP5011AD00

Indramat HDS04.2-W200N-HS 34-01-FW   

SIEMENS SIMOVERT P 6SE1222-2AB02  6SE1 222-2AB02  D400/32 M6REFQ

SIEMENS SIMOVERT P 6SE2108-3AA21  6SE2 108-3AA21 

Siemens Simovert 6SE2133-3AA01   6SE2 133-3AA01

Siemens Simoreg 6RA2125-6DV62-0   6RA2 125-6DV62-0

SEW Movitrac 3007-403-4-00 -unused/OVP-

SEW MOVITRAC 1006-403-4-00

Danfoss MCD3000  Softstarter MCD3022-T7-B21-CV4  - used -

INDRAMAT HDS03.2-W100N-HS34-01-FW DSS02.1M DEA02.1M DLF01.1M CLC-D02.3M-FW HSM01

Siemens SED2.45/32B  6SE6436-2BD34-5EA0   6SE6 436-2BD34-5EA0

INDRAMAT HDS03.2-W100N-HS34-01-FW   DSS 2.1  DLF 1.1   DEA 4.2

SIEMENS MICROMASTER 420 6SE6420-2AD22-2BA1  6SE6 420-2AD22-2BA1  2.20 kW

Getriebebau NORD SK 700E-112-340-A  11kW  inkl. Bedienger?t SK TU1-PAR

DANFOSS Frequenzumrichter VLT2803 VLT 2803 0.9 kVA VTL2803PD2B20STR0DBF00A00C0

DANFOSS Frequenzumrichter VLT5006 VLT 5006 7.6 kVA VTL5006PT5B20STR3DLF00A00C0

Siemens Micromaster 440 6SE6440-2UD15-5AA1 & EMC-Filter Vers:A03/2.06 - used -

QUICK Antriebstechnik DV-505-750RP Frequenzumrichter

SCHAFFNER Spannungsversorgungsfilter FN351H-80-34  -3X 520VAC-

SEW EURODRIVE EMV-Modul EF 014-503 SachNr.: 8263841 -used-

SEW EURODRIVE  MC07A008-5A3-4-00   8272484

SEW EURODRIVE MOVITRAC MC07A055-5A3-4-00  08272549  Umrichter

SEW EURODRIVE MOVIDYN  MAS51A010-503-50  826256X  Umrichter

SEW EURODRIVE MOVIDRIVE 31C015-503-4-00  8263337 Umrichter ohne Bedienteildeckel

SEW EURODRIVE MOVIDRIVE 31C015-503-4-00  8263337  Umrichter

Getriebebau NORD NORDAC Vector SK 7500/3 CT 11.30 kVA

SEW EURODRIVE MOVIDRIVE MDV60A0075-5A3-4-00 8264872 MDX60A0075-5A3-4-00 8226849

St?ber Frequenzumrichter FCM 1028

reis 1410 Id.Nr.: 1729335 10A/20A  Rev.E2 Servodrive

SCHAFFNER Frequenzumrichter, Netzfilter FS5070-16-29

SCHAFFNER Frequenzumrichter, Netzfilter FS5787-16-29

MITSUBISHI FR-ABR-H0.75K Bremswiderstand

MITSUBISHI FR-E540-0.75K-EC FR-E5NF-H0,75K -used (obere Frontabdeckung fehlt)-

MITSUBISHI FR-E540-0.75K-EC FR-E5NF-H0,75K -used-

Siemens 6SE1290-2AF03-Z 6SE1200-6AB00 Frequenzumrichter

Siemens Micromaster Vector 6SE3221-0DC40 6SE3 221-0DC40 -used-

Siemens Micromaster 6SE3221-0DC40 6SE3 221-0DC40 -used/Halterungs?se gebrochen-

SEW BW 147-T Bremswiderstand -unused-_

Siemens 6SE6440-2UC21-5BA1 6SE6 440-2UC21-5BA1

MITSUBISHI MR-J2HBUS5M-A Servokabel

Siemens Simoreg 6RA8 222-1CA0-0  6RA8222-1CA0-0 Card

SEW MOVIDRIVE MCF40A0110-5A3-400 MDx60A0110-5A3-4-00 -used-

SEW Movitrac 31C005-503-4-00 inkl. EMV Modul EF 014-503 -wie neu-

PARKER SSD Drives 6053/PROF/00 + 2x 6511-RS232-00-G

BERGER LAHR D148.13 D 148.13

ESR Pollmeier MidiDrive BN6667.2380-N2-K5-Z1-P1

ESR Pollmeier MidiDrive A BN6682.3879-K5-Z1

ESR Pollmeier MidiDrive BN6617.1542.1285

EUROTHERM 7100A 7100 A Frequenzumrichter

NORDAC COMPACT SK 1500/3 NC   SK1500/3NC

MITSUBISHI MR-JCCBL2M-L Encoderkabel

MITSUBISHI MR-JCCBL5M-L Encoderkabel

ESR Pollmeier MidiDrive D BN6742.3310 B1-R1-A1-SK

SEW MOVITRAC 3004-403-1-00 SachNr. 8256357  6,6 kVA

KEB COMBIVERT 15.56.20A-3389 Frequenzumrichter 16 kVA

Siemens MIDIMASTER Vector 6SE3222-3CG40  6SE3 222-3CG40

HITACHI HFC-VWS 11 LF3 Frequenzumrichter 7,5 kW  

SEW MOVITRAC 3011-403-1-00 SachNr. 825639X  16 kVA

Siemens Motorsteuerger?t 3RW2235-0DB15 3RW2 235-0DB15

Lenze 765 E3 b Frequenzumrichter 

Danfoss VLT5004 VLT5004PT2B20STR3DLF00A00  4,4 kVA

emecanique ATV452075N Altivar 5 Serie 45 2

Siemens Simoreg  6RA2431-6GS22-0  6RA2 431-6GS22-0

Siemens Simoreg  6SE1210-2AB00 6SE1 210-2AB00 

Loher Dynavert 2T2A-03400-007 16 kVA Frequenzumrichter

Loher Dynavert 2T2A-03400-004 8,7 kVA Frequenzumrichter

SIEMENS Simoreg 6RA7025-6DV62-0-Z  6RA7 025-6DV62-0-Z

Control Techniques UNI2402 Frequenzumrichter  7,5 kW

COOPER Tools TM12 960900 Steuerung

DGD GARDNER DENVER Controller-C TFT T L2 F 960734-F

ABB Drives ACS60100093 Frequenzumrichter

emecanique Altivar 28 ATV28HU09M2  ATV2 8HU09M2

NORDAC COMPACT SK1100/2CV SK1100 Frequenzumrichter1100W

SM Sieb & Meyer Type M1 26.44.0007 Servo Logikkarte  

SM Sieb & Meyer Type M2 26.44.0007 Servo Logikkarte  

DANFOSS Frequenzumrichter VLT5011 VLT 5011 - used -

SIEMENS SIMODRIVE 6SC6130-0FE01  6SC6 130-0FE01

SEW MOVIDRIVE MDV60A030-5A3-4-0T Umrichter

ABB MS450 MS 450 1SA M45 0000 R1004 Motorschutzschalter

SIEMENS SIMODRIVE 6SC6100-0GA00  6SC6 100-0GA00

SIEMENS SIMODRIVE 6SC6100-0NA21   6SC 6100-0NA21 

BERGER LAHR Karte D191 D 191 RS.05

ifm IE5312   IEK3002BBPKG/US

SEW Eurodrive EMV-Modul EF030-503 -unused/OVP-

SEW Eurodrive EMV-Modul EF014-503 - used -

SEW EMV-Modul  EF075-503

ALSTOM Microverter D 1.8 /380-2   029 143704 

NORDAC COMPACT SK370/2CV SK370 Frequenzumrichter 370W

SIEMENS SIMOREG E150/15 6RA2113-6BK26-0 6RA2 113-6BK26-0 -unbenutzt/OVP-

INDRAMAT  CZ 1.2-01-7  CZ1.2-01-7  CZ1-2-01-7 CZ12017

INDRAMAT TVM 2.4-050-220/300-W1/115/220  TVM2.4-050-22

INDRAMAT Netz-Anpassungsmodul  NAM 1.2-15   NAM1.2-15

FANUC VELOCITY A06B-6050-H104 Control Unit A06B6050H104

DEMAG MANNESMANN DPU500V016B01 Frequenzumrichter

Netzger?t für AEG Frequenzumrichter NG 3-690 /EZO 95W

Powerboard AEG Frequenzumrichter T56030155045

ABB Drives ACS60100053 Frequenzumrichter

Siemens SIMOVERT P 6SE2117-3AA21 Frequenzumrichter

BLEMEO Frequenzumrichter 11DE6A200

Lenze 8303 Frequenzumrichter Typ 8303_E.1L.23  

Siemens SIMODRIVE 6RB 2101-4A-Z R 6RB2101-4A-Z R

INDRAMAT Servo Controller TDM 1.2-050-300-W1-000 /S100

Rexroth Indramat Servoregler DKC 03.1-040-7-FW -used-