Electric Energy Measurement Scheme | Ruineng Micro | Vipan Micro | Rongpai Digital Isolation Chip

11-24 2022: Whether im1281b electric energy metering module can be directly connected to MCU without isolation. Answer: im1281b electric energy metering module adopts double isolation sampling of voltage and current. Therefore, during actual test and application, MCU can be directly connected to the pin of the module for normal communication and data reading. 查看详情

11-24 2022: When the im1281b module is actually measuring, why is the measured voltage and current multiplied by the power not equal? Answer: the calculation formula of standard active power is: voltage x current x power factor (uxixcos Φ）, Never lower the power factor. Our electric energy measurement mainly measures the active power, and the voltage x current is the apparent power. 查看详情

11-24 2022: How to test the performance of im1281b electric energy metering module after receiving the goods? A: it is recommended that you purchase at least 2pcs or more for the first time to facilitate testing. After purchasing the module, our salesmen will provide you with a set of information packages, including manuals, upper computers, packaging libraries and other information. 查看详情

11-24 2022: Can im1281b electric energy metering module measure AC and DC? A: im1281b can only conduct AC measurement. If you need DC measurement, you need to choose another module im1253b. 查看详情

11-24 2022: How to conduct simple test when im1253b is first used? GND of 5V output of this power supply cannot be grounded with PC / laptop terminal .Generally, DC source can be used for power supply. If the USB of another laptop is used as the power supply, the power supply of this laptop needs to be unplugged from the socket (at this time, the ground of this laptop is suspended), otherwise it may damage the laptop. 查看详情

11-24 2022: How to connect the im1253b single-phase electric energy metering module with external high current manganese copper? Answer: the wiring diagram of im1253b single-phase electric energy metering module with external high current manganese copper is as follows: 查看详情

11-24 2022: How should the im1253b single-phase electric energy metering module of the external transformer be wired? Answer: the wiring diagram of im1253b single-phase electric energy metering module of external transformer is as follows: 查看详情

11-24 2022: Is there anything else you need to pay attention to when applying the module? Answer: when the module is applied, such as direct plug-in welding, it is forbidden to use strong current lines on the PCB surface at the bottom of the module, and try to avoid wiring.There is a one-to-one correspondence between the modules and their supporting transformers. 查看详情

11-24 2022: How is the im1253b electric energy metering module connected to the actual load? Does it matter if the fire zero line is connected reversely? Users do not need to worry that the module will be burnt or not measured if the live line and zero line are connected reversely. The module has been processed by hardware design and program to ensure that the positive and negative connection will not affect the use of the module and that the electric energy and electric parameters will be measured correctly. 查看详情

11-24 2022: Can im1253b electric energy metering module communicate with multiple modules through one serial port? If yes, what should I do? Answer: the communication port of im1253b is UART port. This communication port belongs to one-to-one communication port and cannot realize 1-to-many communication. If it is really necessary, one serial port can communicate with multiple modules. It can be realized by adding CD4051 single ended 8-channel multi-channel switch chip between modules and serial ports. 查看详情