6ES7421-1BL01-0AA0 限位开关

6ES7421-1BL01-0AA0 限位开关

原理

HPMV的控制核心是微处理器CPU。这个微处理控制系统可以对电机进行起动和保护。CPU对SCR进行相角触发控制以降低加在电机上的电压，然后通过慢慢的控制加在电机上的电压和电流平滑的增加电机转矩，直到电机加速到全速运行。这种起动方式可以降低电机的起动冲击电流，减少对电网和电机自身的冲击。同时也减少了对联在电机上机械负载装置的机械冲击，以延长设备的使用寿命，减少故障和停机检修时间。

A、加速模式：HPMV提供了几种加速模式，你可以根据感应电机的负载情况选择合适的起动曲线。

出厂设置为具有限流功能的电压斜坡，也是可靠的起动模式，可以满足大多数应用场合。初始转矩设定为电机刚好能带动负载转动时的值，然后电压逐渐的平滑上升，在限定的斜坡时间和电机起动电流范围内，使电机平滑到全速运转。下面三种起动状态的分析：

a、 如果电机在软起斜坡结束前达到全速运行，自动反震荡电路将会自动的把全压加到电机上而使斜坡时间不再起作用。可以防止任何的浪涌电流或电机转矩的脉动。这种情况通常可能会发生在负载没有加在电机上而电机工作在减压和低转矩的电机起动过程中。

b、 如果电机在斜坡时间结束前，没有达到全速运行，电流限流设定将会按比率的控制大输出转矩，

HPMV的反馈传感器会自动的防止电机过载失速或超过加速设定时间的故障发生。

c、 限流功能对于电机从电网或发电机中吸取数量的电流提供了有效的手段和控制方式，当电机起动转矩达到限定的起动电流值所对应的转矩后，就会自动的保持这个转矩和电流运行，电流限流值不受设定斜坡时间的影响，直到电机达到全速运行为止。当电机达到全速运行后，电机电流降到正常全速运行的电流值，HPMVK中、高压软起动器有一个全速运行状态输出继电器，从而使旁路高压真空接触器闭合，使电机电流经旁路接触器，从而防止SCR导通所产生的压降引起的热损耗，了工作效率及可靠性。MPMV是工作在全压状态下，正如其它起动器一样，在电机软起动后，电网电压直接加到电机上，但是优于其它起动方式之处在于HPMV具有全电子保护功能，它的灵敏度和对故障保护反映速度是用毫秒来计算，这是常规的电机起动和保护器无法比拟的。

Yokogawa 249151-25-5-AHD-0 digital switchboard meter 249151255AHD0

YOKOGAWA 249154-15-5-AAA-0   249154155AAA0

YOKOGAWA 249217-1-AAA-0-1 DIGITAL SWITCHBOARD METER

YOKOGAWA 249217-1-AHD-0-1 Digital Switchboard Meter T12977

Yokogawa 249304-1-AHD-0-1 3 in 1 AC Volt Digital Switchboard Meter      

YOKOGAWA 24U311AAAB     24U311AAAB

YOKOGAWA 24U312AAAB   24U312AAAB

YOKOGAWA 24VDC 0.4A POWER SUPPLY MODULE PU40-1N      

Yokogawa 250 2 1/2" Panel Meter

Yokogawa 250 Panel Meter 0-600 Amperes DCV 96J202      

YOKOGAWA 250-0-250 PERCENT PANEL METER 68A7614C22YEAAA

YOKOGAWA 250-100-HEXS     250100HEXS

YOKOGAWA 250100LSLS 0-5 D-C AMPERES PANEL METER *      IN A BOX*

YOKOGAWA 250101FAFA PANEL METER *      IN A BOX*

Yokogawa 250-1-0-200 DC Panel Meter 0-200DCMA Range      

YOKOGAWA 250-10DCV/0-10DCA-W/DAMP    25010DCV010DCAWD

YOKOGAWA 250120LSLSW0001 0-5 A-C AMPERES PANEL METER *      IN A BOX*

YOKOGAWA 250120MTLSW0001    250120MTLSW0001

YOKOGAWA 250120PKXX     250120PKXX

YOKOGAWA 250130MTMTW0001 PANEL METER 0-10 *      IN A BOX*

YOKOGAWA 250130NJNJ PANEL METER 0-25VAC *      IN A BOX*

Yokogawa 250-1-50-0-50 DC Panel Meter 50-0-50DCMA Range      

YOKOGAWA 250-2 *      IN BOX*

Yokogawa 250-200-CFCF Meter Scale: 0-20 DC Microamperes

YOKOGAWA 250200FAFA8JNF     250200FAFA8JNF

YOKOGAWA 250200KWKW 0-800 MILLIAMPS D.C.       IN BOX

YOKOGAWA 250200LCLC    250200LCLC

YOKOGAWA 250200LCLC   250200LCLC

YOKOGAWA 250-200-LSLS     250200LSLS

YOKOGAWA 250200MTMT    250200MTMT

YOKOGAWA 250200NJNJ   250200NJNJ

YOKOGAWA 250-201-FAFA PANEL METER *      IN A BOX*

YOKOGAWA 250-201-HYHY   250201HYHY

YOKOGAWA 250209EMZZ8    250209EMZZ8

Yokogawa 250209EMZZ8 Panel Meter-Rack 10 BTM*

YOKOGAWA 250209FAZZ8     250209FAZZ8

Yokogawa 250-2-200-0-200 DC Panel Meter 200-0-200DCMA Range      

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YOKOGAWA 250-220-MTMT   250220MTMT

YOKOGAWA 250220MTXX/M     250220MTXXM

YOKOGAWA 250-220-PKPK     250220PKPK

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Yokogawa 250-221-LSLS Analog Panel Meter -160 to 160 % U-Axis       

Yokogawa 250-221-LSXS Panel Meter 5VDC      

Yokogawa 250-221-LSXS Panel Meter 5VDC       

YOKOGAWA 250-221-MTPZ     250221MTPZ

YOKOGAWA 250221NDND     250221NDND

Yokogawa 250-224-ECNT Panel Meter 0-50DCA NOP

YOKOGAWA 250-224-GBSC *      IN A BOX*

Yokogawa 250225GBPZ Model 250 Panel Meter -      

YOKOGAWA 250225GBRX PANEL METER 300-300 *      IN A BOX*

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YOKOGAWA 250229ECZZ    250229ECZZ

YOKOGAWA 250229ECZZ8 NSFB

YOKOGAWA 250229ECZZ8    250229ECZZ8

YOKOGAWA 25022GBRX D-C AMPERES 300-0-300 *      IN A BOX*

YOKOGAWA 250239LSZZ *      OUT OF A BOX*

Yokogawa 250239LSZZ AC Ammeter 0-5 A 40/70 H 0-30 AC Amperes Panel Meter

YOKOGAWA 250239LSZZ    250239LSZZ

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YOKOGAWA 250239LSZZ   250239LSZZ

YOKOGAWA 250240LSND     250240LSND

YOKOGAWA 250240LSND7     250240LSND7

YOKOGAWA 250240LSNG7     250240LSNG7

YOKOGAWA 250240LSNL    250240LSNL

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YOKOGAWA 250240LSNL   250240LSNL

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YOKOGAWA 250240LSNL7     250240LSNL7

YOKOGAWA 250240LSNW7     250240LSNW7

YOKOGAWA 250-240-LSP21AAA     250240LSP21AAA

YOKOGAWA 250240LSPK CURRENT TRANSFORMER METER 0410-0080 04100080

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YOKOGAWA 250-240-LSPK   250240LSPK

YOKOGAWA 250-240-LSPZ     250240LSPZ

YOKOGAWA 250-240-LSPZ   250240LSPZ

YOKOGAWA 250240LSPZ2AAB   250240LSPZ2AAB

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YOKOGAWA 250-240-LSRX 0-300 AC AMP PANEL METER *      IN BOX*

YOKOGAWA 250240LSRX    250240LSRX

YOKOGAWA 250240LSSJ    250240LSSJ

YOKOGAWA 250-2-40-LS-TM   250240LSTM

YOKOGAWA 250-240LSVA     250240LSVA

YOKOGAWA 250-240LSVA   250240LSVA

YOKOGAWA 250-240-LSVC     250240LSVC

YOKOGAWA 250-240-LSVC    250240LSVC

YOKOGAWA 250-240LSVC7     250240LSVC7

Yokogawa 250-240-MTMT Panel Meter 0-10AC Amps

YOKOGAWA 250240MTMT   250240MTMT

YOKOGAWA 250-2-40MTMT7     250240MTMT7

YOKOGAWA 250-2-40MTMT7   250240MTMT7

YOKOGAWA 250-240-NDND 0-15 AC AMPERES PANEL METER *      IN BOX*

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Yokogawa 250-240-NDND Panel Meter 0-15 AC Amperes 250240NDND

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Yokogawa 250240NDND7 AC AMP I/V RTG 0-15A 40/70H       

YOKOGAWA 250240NLNL7 PANEL METER *      IN BOX*

YOKOGAWA 250240NTNT     250240NTNT

YOKOGAWA 250244NDND    250244NDND

YOKOGAWA 250244NDND VOLTAGE METER *      IN BOX*

YOKOGAWA 250244PZPZ     250244PZPZ

Yokogawa 250244PZSJ Panel Meter

YOKOGAWA 250244PZSM   250244PZSM

Yokogawa 250-25-0-25 DC Panel Meter 25-0-25DCMA Range      

YOKOGAWA 250-2-NMG0552    2502NMG0552

YOKOGAWA 250-3 0-30, 0-300 AC VOLTS DUAL RANGE METER

YOKOGAWA 250-3 DO-91 OANEL METER      

YOKOGAWA 2503     2503

YOKOGAWA 250-3 PANEL METER *      IN A BOX*

YOKOGAWA 250-3 PANEL METER *      IN A BOX* RR2645. 10B

YOKOGAWA 250-3/10DCV/600DCV PANEL METER DC VOLTS RANGE: 0-600DC AMPS,      *

Yokogawa 250-300-CFCF Panel Meter 0-20DCM       

YOKOGAWA 250300CFCF8     250300CFCF8

YOKOGAWA 250300CY-CUST-1     250300CYCUST1

YOKOGAWA 250300CY-CUST-1    250300CYCUST1

Yokogawa 250300DRDR8 Panel Meter 0-200 lb

YOKOGAWA 250300DRXX     250300DRXX

YOKOGAWA 250300FARLYPM     250300FARLYPM

YOKOGAWA 250300FAXX    250300FAXX

YOKOGAWA 250300HF-HF8/UL/KMD   250300HFHF8ULKMD

YOKOGAWA 250300HFHF8KNJ     250300HFHF8KNJ

YOKOGAWA 250-300HFHF-IJKK PANEL METER *      IN A BOX*

YOKOGAWA 250300LSLS   250300LSLS

YOKOGAWA 250300MTMT     250300MTMT

YOKOGAWA 250300NDND PANEL METER 0-15 D-C AMPERES *      IN A BOX*

YOKOGAWA 250-300-NGNG   250300NGNG

YOKOGAWA 250-300-NLNL    250300NLNL

YOKOGAWA 250-3-0-100PERCENT     25030100PERCENT

YOKOGAWA 250301CYCUST1     250301CYCUST1

YOKOGAWA 250-301-FAXS     250301FAXS

YOKOGAWA 250301GZGZ D-C MILLIAMPERES 10-0-10 *      IN A BOX*

YOKOGAWA 250-301-KMKM     250301KMKM

YOKOGAWA 250-301-LALA     250301LALA

YOKOGAWA 250-301-LELE     250301LELE

YOKOGAWA 250-301-LSLS     250301LSLS

YOKOGAWA 250-3-01NDND   250301NDND

YOKOGAWA 250-301-NLNL   250301NLNL

Yokogawa 250309CFZZ8 DC AMMETER 7003B-4

YOKOGAWA 250-309FAZZ     250309FAZZ

YOKOGAWA 250309FAZZ8 25030 XXXX 0-2000 D-C MA MILLIAMPERES PANEL METER B474505

YOKOGAWA 250309FAZZ8   250309FAZZ8

YOKOGAWA 250-3-100-D-C    2503100DC

YOKOGAWA 250-3-100SPM     2503100SPM

YOKOGAWA 250-320-160VDC/0-200RPM     250320160VDC0200

YOKOGAWA 250320LS   250320LS

YOKOGAWA 250320LSLS8KDG PANEL METER 0-1000 *      IN A BOX*

YOKOGAWA 250-320-MJXS PANEL METER *      IN A BOX*

YOKOGAWA 250-320-MJXS PANEL METER 0-3500 FPM *      IN A BOX*

YOKOGAWA 250320MTMT     250320MTMT

YOKOGAWA 250320MTMT   250320MTMT

YOKOGAWA 250-320-MTSN PANEL METER, DC AMPERES, 0-10 VDC, 0-60 ADC,      

YOKOGAWA 250-320-MTXS    250320MTXS

YOKOGAWA 250-320-MTXS Panel Meter 0-200% LOAD      

YOKOGAWA 250-320-MTXS PANEL METER 0-2500 RPM *      IN A BOX*

YOKOGAWA 250320NGNG8KAH/CSA NIB PANEL METER 0A-20A YOKOGAWA 250320NGNG8KAH/CSA

Yokogawa 250-320-NJNJ Panel Meter DC Volts      

Yokogawa 250-320-NLNL Analog 0-30 DC Volt Panel Meter       in Box

Yokogawa 250320NTNT 0-50 DCV 250-320-NTNT Panel Meter VDC Volt

Yokogawa 250320NTNT8NT Panel Meter, 0-50

YOKOGAWA 250-320-PKPK   250320PKPK

YOKOGAWA 250320PZPZ PANEL METER 0-150 D-C VOLTS *      IN A BOX*

YOKOGAWA 250-320-PZXS PANEL METER 0-800 *      IN A BOX*

YOKOGAWA 250-320-RXRX NSFB - PANEL METER

YOKOGAWA 250320RXRX     250320RXRX

YOKOGAWA 250320RXRX    250320RXRX

YOKOGAWA 250320RXRX8     250320RXRX8

YOKOGAWA 250-320-SJSJ PANEL METER *      IN A BOX*

YOKOGAWA 250-320-XSXS   250320XSXS

YOKOGAWA 250320XXXX METER PANEL MOUNT 0-750 DC VOLTS *      IN A BOX*

YOKOGAWA 250320XXXX     250320XXXX

YOKOGAWA 250321MTMT8JEB     250321MTMT8JEB

YOKOGAWA 250-321-MTXS METER 20-0-20 DC *      IN A BOX*

YOKOGAWA 250-321-RXRX     250321RXRX

YOKOGAWA 250-321-SFSF     250321SFSF

Yokogawa 2503-23 Digital AC Power Meter

YOKOGAWA 250324 ECNT NSFB

YOKOGAWA 250324ECNT 0-50 D-C AMPERES *      IN A BOX*

YOKOGAWA 250324ECNT     250324ECNT

YOKOGAWA 250-324-ECPZ NSFB

YOKOGAWA 250-324-ECRX     250324ECRX

YOKOGAWA 250-324-ECRX   250324ECRX

YOKOGAWA 250324ECSF8, 0-500 DC AMPERES PANEL METER (      IN BOX)

YOKOGAWA 250-324-ECSN     250324ECSN

YOKOGAWA 250324GBPB     250324GBPB

YOKOGAWA 250-324-GBPK *      IN A BOX*

YOKOGAWA 250-324-GBPZ NSFB

YOKOGAWA 250324-GBRX   250324GBRX

YOKOGAWA 250324GBSF     250324GBSF

YOKOGAWA 250324GBVN8 NSFB

YOKOGAWA 250324GBVT8 NSFB

YOKOGAWA 250325ECNT8 NSFB

YOKOGAWA 250-325-ECPB     250325ECPB

YOKOGAWA 250-325-ECPK   250325ECPK

YOKOGAWA 250-325-ECSF     250325ECSF

YOKOGAWA 250325ECSJ8 NSFB

YOKOGAWA 250325ECSS8 NSFB

YOKOGAWA 250-325-ECXS METER 100-0-**** *      IN A BOX*

YOKOGAWA 250-325-GBSN     250325GBSN

YOKOGAWA 250-325-GBVA     250325GBVA

YOKOGAWA 250330PKPK   250330PKPK

YOKOGAWA 250330RLRL **NIB**

YOKOGAWA 250339LSPZ    250339LSPZ

YOKOGAWA 250339LSZZ A-C AMPERS METER 3 1/2" 100-600       $39

YOKOGAWA 250339LSZZ NSFB

YOKOGAWA 250339LSZZ-0-100AMP     250339LSZZ0100AM

YOKOGAWA 250339LSZZ-0-150/AMP     250339LSZZ0150AM

YOKOGAWA 250-339-LSZZ-0-150/ML     250339LSZZ0150ML

YOKOGAWA 250-339-LSZZ-0-150/ML    250339LSZZ0150ML

YOKOGAWA 250339LSZZ7-0-800AMP    250339LSZZ70800A

YOKOGAWA 250339ORZZ   250339ORZZ

YOKOGAWA 250340JRJR   250340JRJR

YOKOGAWA 250340LS RX7 0-300 AC AMPS Panel Meter 0-5 AAC 0-300

YOKOGAWA 250340LS** NSFB - GAUGE

YOKOGAWA 250-340-LSLS     250340LSLS

YOKOGAWA 250-340-LSLS    250340LSLS

YOKOGAWA 250-340-LSLS   250340LSLS

YOKOGAWA 250-340-LSMT     250340LSMT

Yokogawa 250-340-LSMT Panel Meter