140CRA21120

140CRA21120

在PLC控制系統(tǒng)中，電源占有極重要的地位。電網(wǎng)干擾串入PLC控制系統(tǒng)主要通過PLC系統(tǒng)的供電電源（如CPU 電源、I/O電源等）、變送器供電電源和與PLC系統(tǒng)具有直接電氣連接的儀表供電電源等耦合進(jìn)入的?，F(xiàn)在，對(duì)于PLC系統(tǒng)供電的電源，一般都采用隔離性能較好電源，而對(duì)于變送器供電的電源和PLC系統(tǒng)有直接電氣連接的儀表的供電電源，并沒受到足夠的重視，雖然采取了一定的隔離措施，但普遍還不夠，主要是使用的隔離變壓器分布參數(shù)大，抑制*力差，經(jīng)電源耦合而串入共模干擾、差模干擾。所以，對(duì)于變送器和共用信號(hào)儀表供電應(yīng)選擇分布電容小、抑制帶大（如采用多次隔離和屏蔽及漏感技術(shù)）的配電器，以減少PLC系統(tǒng)的干擾。

此外，位保證電網(wǎng)饋點(diǎn)不中斷，可采用在線式不間斷供電電源（UPS）供電，提高供電的安全可靠性。并且UPS還具有較強(qiáng)的干擾隔離性能，是一種PLC控制系統(tǒng)的理想電源。

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YASKAWA TYPE MARK II AC SPINDLE MOTOR EEA-IKM PHASE 3 M

TOOL POD HOLDERS HOLDSTER CAT 40 CT40 LOT 24 SHIZUOKA 

CINCINNATI 3 542 1015A DUMP BOARD 35421015A CINCINNATI 

ASTRO GS18NF CNC SPINDLE ASTRO GS18NF CNC LATHE SPINDLE

GOULD GETTYS PERMANENT MAGNET SERVO MOTOR 16-5605-04

FINE SODICK NR-MOS-02A NRMOS02A POWER/CIRCUIT BOARD

SIEMENS C98043-A1086-L11 C98043A1086L11 CNC BOARD

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YASKAWA AC SPINDLE MOTOR EEA-IKM EEA-1KM 3 PHASE

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MITSUBISHI AC SPINDLE MOTOR SJ-5.5 A SJ5.5A OKK PCV-40 

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FANUC A06B-6058-H226 A16B-1200-0800 2 AXIS SERVO CONTRO

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20 MAZAK VTC-41 CNC VERTICAL MILL CAROUSEL TOOL POD POT

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TOOL POD HOLDERS CT40 CAT 40 LOT OF 20 MORI SEIKI MV45/
 

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1994 MITSUBISHI DWC 90SB BY998065H01 L10958/MU-C.SZ POW

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SEIKI 01-05-02 BOARD 010502 HITACHI SEIKI CNC VK45 VERT

MAKINO MC40 FANUC SERVO MOTOR CNC A06B-0651-B005

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POWER SUPPLY UNIT A20B-0007-0330/05B A20B-0007-0330 A35

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PC CIRCUIT BOARD FX14E BN624A489H03 BN624A489HO3 MITSUB

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MIYANO KNC-45 MOTOR 7' ROTORS SPINDLE
 

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GHIELMETTI 447.140.112 447140112 447130073002 BOARD CNC

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Fanuc 6T CONTROL MONITOR PENDANT COMPLT A02B-0050-C012

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