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為適應(yīng)工業(yè)環(huán)境使用,與一般控制裝置相比較,PLC機有以下特點:
1. 可靠性高,抗干擾能力強
工業(yè)生產(chǎn)對控制設(shè)備的可靠性要求:
①平均故障間隔時間長
②故障修復(fù)時間(平均修復(fù)時間)短
任何電子設(shè)備產(chǎn)生的故障,通常為兩種:
①偶發(fā)性故障。由于外界惡劣環(huán)境如電磁干擾、超高溫、超低溫、過電壓、欠電壓、振動等引起的故障。這類故障,只要不引起系統(tǒng)部件的損壞,一旦環(huán)境條件恢復(fù)正常,系統(tǒng)也隨之恢復(fù)正常。但對PLC而言,受外界影響后,內(nèi)部存儲的信息可能被破壞。
②永久性故障。由于元器件不可恢復(fù)的破壞而引起的故障。
如果能限制偶發(fā)性故障的發(fā)生條件,如果能使PLC在惡劣環(huán)境中不受影響或能把影響的后果限制在最小范圍,使PLC在惡劣條件消失后自動恢復(fù)正常,這樣就能提高平均故障間隔時間;如果能在PLC上增加一些診斷措施和適當(dāng)?shù)谋Wo手段,在永久性故障出現(xiàn)時,能很快查出故障發(fā)生點,并將故障限制在局部,就能降低PLC的平均修復(fù)時間。為此,各PLC的生產(chǎn)廠商在硬件和軟件方面采取了多種措施,使PLC除了本身具有較強的自診斷能力,能及時給出出錯信息,停止運行等待修復(fù)外,還使PLC具有了很強的抗干擾能力。
LAUER PCS 090 topline mini
LAUER LCA 143 TEXTANZEIGE - 14 x 18117-C7
LAUER LCA 143 TEXTANZEIGE - 18278-C8
LAUER PCS 090 topline mini / 090.207.D
LAUER LCA terminal 640.1
LAUER PCS 090 topline mini / 090.208.D
LAUER PCS 090 topline mini BEDIENKo
nSOLE / 090.206.D
LAUER PCS 090 topline mini OPERATOR PANEL
LAUER PCS 090 topline mini BEDIENKo
nSOLE / 090.208.E
LAUER PCS 090 BEDIENKo
nSOLE / 090.208.D
LAUER PCS 090 BEDIENKo
nSOLE / Version 00087.C5 / 090
Lauer Systeme Type: AVTCE212
Lauer Type: EPC1200tc
LAUER Automux PCS 809
LAUER PCS 801 - EEPROM
LAUER PCS 802 - EEPROM
LAUER PCS 801 - EEPROM
LAUER Systeme LCA 020
LAUER Kommunikatio
nskabel - zw. LCA 020 - 030
LAUER Kommunikatio
nskabel - PCS 110 - PCS - L1
LAUER Kommunikatio
nskabel - 090 - 095
LAUER Kommunikatio
nskabel - LCA 320
Lenze Frequenzumrichter 33.4904_ E.
Lenze Frequenzumrichter EVF9329-EV / 33.9329VE.6C.63
Lenze Single Drive L-force Type:E94ASHE0474
Lenze Frequenzumrichter EMB9343-E
Lenze 4900 Stromrichter Type: EVD4905-E / 33.4905-E.4
Lenze Servo Drives 9400 Type: E94AMHE0324A33NNPM
Lenze 8400 HighLine C Typ: E84AVHCE3034VB0
LENZE Frequenzumrichter 9220, Type: 9224_ E.2B.20
Lenze 4900 Stromrichter Type: EVD4903-E
Lenze 4900 Stromrichter Type: EVD4902-E / 33.4902-E.4
Lenze Multi Drive StatelLine Type:E94AMSE0244
Lenze Frequenzumrichter EVF9321-EV / 33.9321VE.7B.73
Lenze Frequenzumrichter E82EV153K4B201 15KW
Lenze Servo Drives 9400 Type: E94AMHE0074A33NNPM
Lenze Servo Drives 9400 Type: E94ARNE0244A22NNNN
Lenze INVERTER DRIVES 8400 Type: E84AVSCE7524SXO
Lenze Frequenzumrichter EVF8245-E
LENZE Inverter 8200 motec Type: E82MV752_4B001
LENZE Frequenzumrichter 9220, Type: EVS9222- E-V003
LENZE EIN/RüCKSPEISEMODUL Type: EMB9342-E
LENZE Inverter 8200 motec Type: E82MV152_4B001
Lenze 8200 motec Type: E82MV152_4B001
Lenze Frequenzumrichter EVF8217-C -V003
LENZE AC 760 Frequenzumrichter 761_E 3b
Nordac Nord Drivesystems Type:SK 225E-221-340-A
LENZE Frequenzumrichter 8600 Type:33.8606-E
Lenze Inverter Drives 8400 StateLine C E84AVSCE1524SX
Lenze Inverter Drives 8400 StateLine C E84AVSCE1522SB0
LENZE Frequenzumrichter 8300 Type:33.8308_E
Lenze Power Supply 9210 Type:33.9215_E / 33.9215.E.2
Lenze INVERTER DRIVES 8400 Type: E84AVSCE1524SXO
Lenze INVERTER DRIVES 8400 Type: E84AVSCE3024SXO
Lenze Type:E82EV552K4C
Lenze Type:E82EV552K4C929
Lenze Frequenzumrichter Typ: 8605-E.2C.20 TOP
Lenze Frequenzumrichter Type: E82EV752K4B000
Lenze Frequenzumrichter Type: EVF8214 - E
Lenze Frequenzumrichter Type: E82EV223_4B241
Lenze Frequenzumrichter EVF8215-E
Lenze Frequenzumrichter Typ: 638 E.3F / 1.7122.0424
Lenze Frequenzumrichter Typ: 638 E.3H / 1.7122.1865
Lenze Frequenzumrichter EVF8204-E
LENZE 8400 StarteLine C Type: E84AVSCE5524SXO
Lenze 8200 motec 3-400 V Type: E82MV751_4B001
Lenze Frequenzumrichter Type:E82EV402K4C
LENZE i700 Single Inverter Type: E70ACMSE0324SA1ETR
Lenze Frequenzumrichter Type: EVF8214
Lenze Type:E82EV402K2C - 4,0 kW - Inkl. E82ZBC
Lenze Frequenzumrichter Type: 33.8217-E
Lenze Frequenzumrichter E82EV552K4C Inkl. E82ZBC
Lenze Frequenzumrichter EVF8211-E
Lenze Type:E82EV552K2C200 / E82EV552_2C200
Lenze PP54 Servoverstrker Type:EMZ2215-E-V009
Lenze Type: E82EV222K4C
Lenze Frequenzumrichter Type:E82EV152K4B
Lenze Type:E82EV402K2C200
Lenze Type:E82EV302K4C - 3,0 kW Inkl. E82ZBC
Lenze Type:E82EV552K2C200 / E82EV552K2C200 + E82ZBC
Lenze Type:E82EV302K4C200
Lenze Frequenzumrichter Type: 33.8214
Lenze AC Tech 400/480 V Type: ESV222N04TXC000XX1D41
Lenze Frequenzumrichter EVF8243-E
LENZE Frequenzumrichter Type:E82CV751K4C
Lenze Frequenzumrichter E82EV552K4C200
Lenze Type: E82EV222K4C000