6AV6545-0CA10-0AX1電量信號的采樣需要采集電壓和電流信號并轉(zhuǎn)換成有效值，調(diào)理成 MCU需要的0－5V信號，同時需要正弦－方波的轉(zhuǎn)換，送到 MCU的中斷接口處，便于相位計算。電壓信號的調(diào)理電路如圖 4所示，電流型電壓互感器將取樣電壓信號轉(zhuǎn)換成 mA電流信號經(jīng)運放 U2放大成電壓信號，經(jīng) U1A比較電路取得交流電壓過零方波的檢測信號，供頻率轉(zhuǎn)換和相位計算用，運放 U1B，U1C電路構(gòu)成整流電路，U1D電路為濾波電路，其輸出為 MCU需要的0－5V電壓信號。電壓信號采樣考慮到變化幅度有限，選擇 1.5倍額定電壓對應(yīng) MCU昀大輸入5V，而電流信號變化比較大，特別是大電機起動時，電流可以達到其額定電流6－8倍，電流的保護控制也需要能有效地實現(xiàn)8－10倍的保護控制，所以同一個電流的采樣分成三個等級來實現(xiàn)，一是 2倍額定電流對應(yīng) MCU對答輸入5V，一是 4倍額定電流對應(yīng) MCU的 5V輸入，另一是 10倍額定電流對應(yīng) 5V輸入。電路原理與圖 4所示類似，這樣，一臺發(fā)電機輸出的三相電壓和電流的采樣要用到 12個模擬量輸入，3個電壓過零中斷輸入，3個電流過零中斷輸入。根據(jù)上述信號 MCU將不僅得到相應(yīng)的電壓值、電流值，還要計算出相位差，功率因素，有功功率，無功功率，視在功率，有功電能統(tǒng)計等，同時需要根據(jù)額定值確定是否有過電壓、欠電壓、長延時過電流、短延時過電流、瞬時過電流，逆功率等故障信號，所以本電量變送器含多重功能。

6AV6545-0CA10-0AX1

HONEYWELL 51304421-200 PLCG Relay Panel 51304421200

HONEYWELL 51201557-150 I/O Link 51201557150

HONEYWELL 51191561-100 SPC Firmware Kit 51191561100 

TR-Systemtechnik MSSI-2 Submodule 24 Bit Fox-20

Sun Hydraulics NCEB-LCN Relief Valve - 

HONEYWELL 51400712-100 REV D Power Supply 51400712100

CHEROKEE INTERNATIONAL SP125 3F C POWER SUPPLY

HONEYWELL 51400712-100 REV K Power Supply 51400712100

LOMA METAL DETECTOR D19 (400 x 200) 110V

Reliance Electric 45C912 5 Slot Rack 

Reliance Electric 45C900 SHARK Processor Module

Lot of 3 REDUCED VOLTAGE STARTER, 150 HP, CUTLER HAMMER

Baghouse - Dust Collector 

Trim Saw, 5HP, Double Edge, Adjustable Cut Length

170 Gal. Stainless Steel Tank, Open Top – Flat Bottom

170 Gal. Stainless Steel Tank, Dish Top – Dish Bottom

150 Gal. Stainless Steel Tank, Flat Top – Dish Bottom

HONEYWELL 80366177-200 Analog Output 16 Card MU-TAOY 23

HONEYWELL 51304270-100 EPDG I/O Card 51304270100

HONEYWELL 51402447-100 EPDGC I/O Card 51402447100

YAMATAKE-HONEYWELL 82407372-001 Term Panel 82407372001

HONEYWELL 38500148-300 Hub Pwr Supply 38500148300 

HONEYWELL 38500148-300 Hub Pwr Supply 38500148300

Hydrostatic Steam Blancher Conveyor, 30ft Stainless

Airtek Blower Purge Air Dryer TWB500, 500 SCFM

Air Compressor, 100 PSI, 50 HP Gardner Denver ESHAE

GE 55-501493G004 Starter Contactor Coil - 

BANNER RWB4, Wiring Base Block, , RWB4

Hoyt K430, GE 232A6724G009 Size 6, 3 Pole Contact Kit

Dodge Reducer, Ratio 38.4 w/50HP Motor

HONEYWELL 51304421-200 PLCG Relay Panel 51304421200

HONEYWELL 51201557-150 I/O Link 51201557150

HONEYWELL 51191561-100 SPC Firmware Kit 51191561100 

TR-Systemtechnik MSSI-2 Submodule 24 Bit Fox-20

Sun Hydraulics NCEB-LCN Relief Valve - 

HONEYWELL 51400712-100 REV D Power Supply 51400712100

CHEROKEE INTERNATIONAL SP125 3F C POWER SUPPLY