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9. Analysis of common fault
Check whether the power supply voltage is in the working voltage range.
Incorrect reading of
voltage and current
Check the rated voltage and current of the primary side and secondary side is correct.
Check whether the wiring mode setting is consistent with the actual wiring.
Check voltage transformer, current transformer is in good condition.
Incorrect power or power
factor
Check whether the wiring mode setting is consistent with the actual wiring.
Check the voltage and current phase sequence is correct.
Check whether the address, baud rate, parity, etc. in the communication settings are
consistent with the host computer.
Check the RS485 converter is normal.
Parallel over 120 Ω resistance at the end of communication.
Ethernet communication is
abnormal
Check whether the IP address, subnet mask, gateway address, and port number
settings are correct.
Check whether the host computer and the meter network address is the same network
segment
The extended module
flashes red
As with the TF card, check if the TF card is loose or damaged (view in
communication or display).
Check whether the meter time is accurate. If the meter system time is set incorrectly,
the TF card will not be read.
If there is still a malfunction and the fault is not eliminated after the meter is restarted,
it is necessary to return to the factory for repair.
The thermometer reads 0
or -100
Check whether the module wiring is correct
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