6GK7243-1EX01-0XE0 亿佳购开心

电压控制起动

电压控制起动方式是在确保起动压降的条件下使电机取得大的起动转矩，大化的缩短起动时间，是好的轻载软起 动方式，如图7所示。

从以上实现软起动的各种方法来分析，软起动不仅能够将电机的起动特性由“硬”平稳地变为“软”之外,还克服传统降压起动 引起的二次冲击电流问题。但是，软起动时的电压是逐渐上升的，在起动开始阶段电机无法获得大转矩。

采用限流起动与斜坡电压起动两种控制方式相结合的方法,这样既不损失起动转矩又避免了起动电流的冲击。

如概述图所示,软起动器的主回路是三对反向并联的晶闸管组成。控制晶闸管触发角的大小，调整其导通时间，使电动机的输出 电压的得到控制，让其按照预先设定好的曲线和时间逐渐上升达到额定电压。据此，电机的起动电压和起动电流随意可调，防止 了起动电流过大,保护了电网的安全，实际上软起动的控制原理也属于降压起动,无机械触点是与传统降压起动的不同之处，解决 了有触点时对电网和电机的危害的问题。 [3]

晶闸管交流调压电路的控制方式有两种:(1)相位控制方式,：在电路的电源电压上下半波周期内其中的一时刻分别是晶闸管 导通，改变其控制角就可以控制电路的接通的时间，达到了到调压的效果。(2)开关控制方式晶闸管代替开关使用的，通过调整 电路的接通时间和断开时间之比来调节电压。相位控制用的比较普遍。

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PNU SN:70724             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PNU SN:70806             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PNU SN:70873             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PNU SN:72683             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PNU SN:73944             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PNU SN:9718             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PRU SN:35134             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT97121PRU SN:4047             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT9721PNU SN:40116             

MICRO MOTION REMOTE FLOW TRANSMITTER MOD:RFT9739E1SUJ SN:1531573 PARTS ONLY

Micro Motion Remote Flow Transmitter Model RFT9712 3PNU LNC

Micro Motion Remote Flow Transmitter Model RFT97121PNU E1~ 40426LR

Micro Motion Remote Flow Transmitter RFT9712

MICRO MOTION REMOTE FLOW TRANSMITTER RFT9712 1PNU

MICRO MOTION REMOTE FLOW TRANSMITTER RFT9712 1PNU

MICRO MOTION REMOTE FLOW TRANSMITTER RFT9712 1PNU

MICRO MOTION REMOTE FLOW TRANSMITTER RFT9712 1PRU Serial # 53145              (J#1)

Micro Motion Remote Flow Transmitter RFT-9712 RFT9712 1PNU

Micro Motion Remote Flow Transmitter RFT9712-1KNU 115/230VAC

Micro Motion Remote Flow Transmitter RFT97121PNU

MICRO MOTION REMOTE FLOW TRANSMITTER RFT97121PNU

MICRO MOTION REMOTE FLOW TRANSMITTER RFT97121PNU

MICRO MOTION REMOTE FLOW TRANSMITTER RFT97121PNU             

MICRO MOTION REMOTE FLOW TRANSMITTER RFT97121PRU

Micro Motion Remote Flow Transmitter RFT97121PRU

Micro Motion Remote Flow Transmitter RFT9712IPNU RFT9712

MICRO MOTION REMOTE FLOW TRANSMITTER RFT9739E1SUJ, 100/115VAC, WITH COVER

MICRO MOTION REMOTE FLOW TRANSMITTER, MODEL: RFT9712 1PNU, SN: 45595/161418,            

MICRO MOTION REMOTE FLOW TRANSMITTER, MODEL: RFT97121KDU, SN: 65721,             

MICRO MOTION REMOTE FLOW TRANSMITTER, RFT97121PNU

MICRO MOTION REMOTE FLOW TRANSMITTER, SN: 13259, OUTPUT 15 VOLTS,             

MICRO MOTION RFT 9739E4SUJ TRANSMITTER NNB V3.7 SOFTWARE

Micro Motion RFT 9739E4SUJ Transmitter Software Version 3.6           

MICRO MOTION RFT9712 *            *

MICRO MOTION RFT9712 1KN REMOTE FLOW TRANSMITTER RFT97121KN

MICRO MOTION RFT9712 1PDU

Micro Motion RFT9712 1PDU Transmitter D15 (1945)

MICRO MOTION RFT9712 1PNU FLOW 100/115V-AC TRANSMITTER D350677

Micro Motion RFT9712 1PNU Remote Flow Transmitter

Micro Motion RFT9712 1PNU Transmitter A1 (1980)

Micro Motion RFT9712 1PNU Transmitter D19 (1629)

Micro Motion RFT9712 1PNU Transmitter E7 (1766)

Micro Motion RFT9712 1PNU Transmitter F12 (1480)

Micro Motion RFT9712 1PNU Transmitter F8 (1766)

Micro Motion RFT9712 1PNU Transmitter un            

MICRO MOTION RFT9712 1PRC REMOTE FLOW TRANSMITTER (            )

MICRO MOTION RFT9712 1PRC REMOTE FLOW TRANSMITTER 115/230VAC *            *

Micro motion RFT9712 1PRU

MICRO MOTION RFT9712 1PRU FLOW TRANSMITTER

Micro Motion RFT9712 1PRU Remote Flow Transmitter w/Display & Reset Button 115V

Micro Motion RFT9712 1PRU Transmitter H4 (1945)

Micro Motion RFT9712 Remote Flow Transmitter

Micro Motion RFT9712-1KN Remote Flow Transmitter RFT97121KN             

MICRO MOTION RFT97121KN    RFT97121KN

Micro Motion RFT9712-1KNU Remote Flow Transmitter RFT97121KNU

MICRO MOTION RFT9712-1KNU    RFT97121KNU

Micro Motion RFT97121PN Remote Flow Transmitter

MICRO MOTION RFT97121PN    RFT97121PN

MICRO MOTION RFT9712-1PNC REMOTE FLOW TRANSMITTER 115/230V-AC D521004

MICRO MOTION RFT9712-1PNC    RFT97121PNC

MICRO MOTION RFT97121PNU ELITE TYPE REMOTE FLOW TRANSMITTER

MICRO MOTION RFT97121PNU FLOW TRANSMITTER *           OUT OF BOX*

MICRO MOTION RFT9712-1PNU      RFT97121PNU

MICRO MOTION RFT9712-1PNU REMOTE FLOW TRANSMITTER

MICRO MOTION RFT97121PNU REMOTE FLOW TRANSMITTER 115/230 VAC 14 WATT

MICRO MOTION RFT9712-1PNU    RFT97121PNU

MICRO MOTION RFT9712-1PRC 115/230V-AC REMOTE FLOW TRANSMITTER D521010

MICRO MOTION RFT9712-1PRC    RFT97121PRC

MICRO MOTION RFT97121PRU ELITE TYPE REMOTE FLOW TRANSMITTER

Micro Motion RFT9712-1PRU Remote Flow Transmitter,             

MICRO MOTION RFT9712-1PRU    RFT97121PRU

MICRO MOTION RFT9712-3KN    RFT97123KN

Micro Motion RFT97123PRU Transmitter

MICRO MOTION RFT97123PRU    RFT97123PRU

MICRO MOTION RFT971Z1PN FLOW TRANSMITTER *            *

Micro Motion RFT9739 D4SUA Elite Remote Flow Rev 3.9 Transmitter B3 (1953)

Micro Motion RFT9739 D4SUA Elite Remote Flow Rev 3.9 Transmitter E1 (1952)

Micro Motion RFT9739 D4SUA Elite Remote Flow Rev 3.9 Transmitter E20 (1953)

Micro Motion RFT9739 D4SUA Elite Remote Flow Rev 4.0 Transmitter C6 (1963)

Micro Motion RFT9739 E1SU Elite Remote Flow Transmitter H15 (1747)

Micro Motion RFT9739 E1SUJ Elite Remote Flow Transmitter F3 (1700)

Micro Motion RFT9739 E3SU Elite Remote Flow 12-30 VDC Transmitter H4 (1176)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Rev 3.5 Transmitter C12 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Rev 3.6 Transmitter D19 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Rev 3.9 Transmitter A7 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Rev 3.9 Transmitter F8 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Rev 4.1 Transmitter H7 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Transmitter

Micro Motion RFT9739 E4SUJ Elite Remote Flow Transmitter A19 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Transmitter B7 (1992)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Transmitter C18 (1935)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Transmitter C3 (1539)

Micro Motion RFT9739 E4SUJ Elite Remote Flow Transmitter H3 (1992)

Micro Motion RFT9739 E4SUK Elite Remote Flow Transmitter D14 (1741)

Micro Motion RFT9739 MVD 61UAEZZX Remote Flow Transmitter            P18 (1918)

Micro Motion RFT9739 MVD Multivariable Transmitter B17 (1992)

Micro Motion RFT9739 R3EBF Elite Remote Flow Transmitter E2 (1808)

MICRO MOTION RFT9739 REMOTE FLOW 100/115V-AC TRANSMITTER D467826

MICRO MOTION RFT-9739    RFT9739

MICRO MOTION RFT9739D4EBB    RFT9739D4EBB

MICRO MOTION RFT-9739D4EUA        RFT9739D4EUA

MICRO MOTION RFT9739D4SCA ELITE REMOTE FLOW TRANSMITTER 85-250V-AC D520534

MICRO MOTION RFT9739D4SUA 85-250 VAC EXPLOSIVE ATMOSPHERE FLOW TRANSMITTER NIB

MICRO MOTION RFT9739D4SUA      RFT9739D4SUA

MICRO MOTION RFT9739D4SUA    RFT9739D4SUA

MICRO MOTION RFT9739D5SUA      RFT9739D5SUA

MICRO MOTION RFT9739D5SUA    RFT9739D5SUA

MICRO MOTION RFT9739-DISPLAY    RFT9739DISPLAY

MICRO MOTION RFT9739E1SU ELITE TYPE REMOTE FLOW TRANSMITTER

Micro Motion RFT9739E1SU Transmitter

MICRO MOTION RFT9739-E1SU    RFT9739E1SU

Micro Motion RFT9739E1SUJ Elite Remote Flow Transmitter 0-100GPM 4-20mA 100/115V

Micro Motion RFT9739E1SUJ Elite Remote Flow Transmitter w/ 1/2" Reducer 100/115V

MICRO MOTION RFT-9739-E1SUJ        RFT9739E1SUJ

MICRO MOTION RFT9739E1SUJ REMOTE FLOW 100/115V-AC TRANSMITTER D468101

MICRO MOTION RFT-9739-E1SUJ    RFT9739E1SUJ

Micro Motion RFT9739E4SUJ

MICRO MOTION RFT9739E4SUJ ELITE REMOTE FLOW TRANSMITTER

Micro Motion RFT9739E4SUJ Elite Remote Flow Transmitter

Micro Motion RFT9739E4SUJ Transmitter

MICRO MOTION RFT9739-E4SUJ    RFT9739E4SUJ

MICRO MOTION RFT9739-E4SUJEZ      RFT9739E4SUJEZ

Micro Motion RFT9739E4SUJEZ Software Version 4.0 Transmitter            IN BOX

MICRO MOTION RFT9739E4SUJEZ SW4.1 *           OUT OF BOX*

MICRO MOTION RFT9739E4SUJEZ TRANSMITTER *           IN A BOX*

MICRO MOTION RFT9739-E4SUJEZ    RFT9739E4SUJEZ

MICRO MOTION RFT9739E5SUJ , ELITE REMOTE FLOW TRANSMITTER

MICRO MOTION S/S STAINLESS MASS FLOW SENSOR 1-1/2" B16 150# SA182 F316L D2663

MICRO MOTION S100S123D FLOW METER

MICRO MOTION S100S128 MASS FLOW SENSOR

MICRO MOTION S100S128 MASS FLOW SENSOR

MICRO MOTION S100S128 S/S MASS AIR FLOW SENSOR

MICRO MOTION S100S128 S/S MASS AIR FLOW SENSOR

MICRO MOTION S100S128 S/S MASS AIR FLOW SENSOR

MICRO MOTION S100S128 S/S MASS AIR FLOW SENSOR

MICRO MOTION S100S128    S100S128

MICRO MOTION S100S138 *            *

MICRO MOTION S150H148 MASS FLOW SENSOR

MICRO MOTION S150S141 S/S MASS AIR FLOW SENSOR

MICRO MOTION S150S142 S/S MASS AIR FLOW SENSOR

MICRO MOTION S60GYSHG-6029    S60GYSHG6029

Micro Motion Safety Barrier 3600663

Micro motion sanitary mass flow sensor

Micro Motion Sanitary T050 Sensor W/1700R Transmitter

MICRO MOTION STAINLESS STEEL MASS FLOW SENSOR CMF100M339N2BMEZZZ

Micro Motion T075623SRACEZZZX T075623RACEZZZ FLOW SENSOR

MICRO MOTION TRANSMITTER - MODEL: 2700R11BBAEGZZ (EE)

MICRO MOTION TRANSMITTER 2700I13CBAEZZZ

MICRO MOTION TRANSMITTER 2700R11BBAEZZZ