MVME 162-222PLC将模拟量输入的输出值转换为实际的物理量:
转换时应考虑变送器的输入/输出量程和模拟量输入模块的量程,找出被测物理量与D转换后的数字值之间的比例关系。(例题如下)
例MVME 162-222题:某发电机的电压互感器的电压比为10KV/100KV(线电压),电流互感器的电流比为1000A/5A,PLC控制功率变送器的额定输入电压和额定输入电流分别为AC100V和5A,额定输出电压为DC±5V模块输入信号转换为数字-3200~+3200。设转换后得到的数字为N,试求以KW为单位的有功功率值?
解:设计功率变送器时已考虑功率因数对功率计算的影响,因此在推导转换公式时,可以按功率因数1来处理。根据互感器额定值计算的一次回路的有功功率值为
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MVME 162-222
A15290500A
VIG-4W PC卡
SYS68K/CPU-30ZBE
DPCI-204-1203
MB60-046
M406D-B0101
DE-6411-PB4-C-N-K
BA30-320-S
30350-10352
ACM2N1200-4/3-6
FTL010H-A10
ACM2N0480-4/2-3-CW
3-531-3454A
GWS8-100CE
YN-100 0-1.6mpa
SUPER32-L.L302Z
TPC105-TD33H
MVME147-013
FCP270
TRD-Y1024P6
VS-068
CV110
fw-epc-10vrs10
UNS 0863A-P V1
HIEE-305082-R1
C216DA00001 SDC21
WHIRLPOOL WEFV16M-1A 4 TON MULTI-POSITION AIR HANDLER 2
ALLTECH 13683 GC CAPILLARY COLUMN 146154
CARRIER 30GX403120 NOZZLE ASSY FOR 19XR/XRT CHILLER
CARRIER 02XR45000777 CHILLER DIFFUSER 26" DIA 150324
COPELAND ZR68KCE-TFD-230?/34B0050N04 5T AC/HP SCROLL COM
WATTS 995QT-1 1" BACKFLOW PREVENTER 160109
FAST HEPA650 HIGH EFFICIENCY AIR CLEANER 120V 161547
RAPID ENGINEERING 501R05899010 HEAT EXCHANGER REPLACEME
CARRIER 19D211064 CHILLER IMPELLER 1-3/8" BORE 150144
LITHONIA 552770 1,000 WATT LARGE FLOODLIGHT WITH LAMP
RAPID ENGINEERING 501R05899010 HEAT EXCHANGER REPLACEME
DAYTON 15 HP INDUSTRIAL ELECTRIC MOTOR 208-230/460 VOLT
CM 622/5W560 2 TON MANUAL HOIST CHAIN 33662
RHEEM RXRD-NDCM3 HORIZONTAL AIRFLOW ECONOMIZERS 153624
RHEEM RXRD-LDCM3 ECONOMIZER 151454