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Questions

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 b...
2022-11-24
When the module is applied, how to operate if 3.3V power supply is required?

Answer: if 3.3V power supply is required, the rdj of the module needs to be short circuited (as shown in the figure below). This operation ...
2022-11-24
How is the im1281b 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...
2022-11-24
Can im1281b electric energy metering module communicate with multiple modules through one serial port? If yes, what should I do?

Answer: the communication port of im1281b is UART port. This communication port belongs to point-to-point communication. In principle, it i...
2022-11-24
Can the im1281b electric energy metering module replace the electric energy meter / guide rail meter?

Answer: the im1281b electric energy metering module supports MODBUS and DL / T 645-2007 protocols at the same time. Therefore, it can direc...
2022-11-24
Im1281b electric energy metering module test does not communicate. What are the possible reasons?

Answer: if the im1281b electric energy metering module encounters communication failure, first check whether the communication parameters o...
2022-11-24
What is the current range of im1281b electric energy metering module? What if I want to measure a larger current?

Answer: the maximum measuring current of im1281b standard is 50A. If AC current or power with larger current range is required, this module...
2022-11-24
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 ...
2022-11-24
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. ...
2022-11-24
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 sal...
2022-11-24
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.
2022-11-24
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 t...
2022-11-24
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 follow...
2022-11-24
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:
2022-11-24
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 b...
2022-11-24
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...
2022-11-24
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...
2022-11-24
Can im1253b electric energy metering module be compatible with im1253?

A: im1253b is an upgraded version based on im1253 and according to customer requirements. It has a great improvement in function compared w...
2022-11-24
Can the im1253b electric energy metering module measure the battery?

Answer: im1253b can measure the voltage, current, power and electric energy generated on the charging or discharging line of the battery, b...
2022-11-24
What is the current range of im1253b electric energy metering module? What if I want to measure a larger current?

Answer: the maximum measuring current of im1253b standard is 16A. If DC or AC current or power with larger current range is required, this ...
2022-11-24

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