Acrel AEW-D20X 100A LoRa 470Mhz RS485 Modbus wireless energy meter

 1  Overview

         AEW 100 wireless measurement module is mainly used for metering three phase active energy on low voltage network. There are functions like RS485 communication and wireless communication on 470MHz in order to help customers check, get and manage the value of energy consumption. This kind of production has the advantage of higher accuracy, more compact and easy installing. It can be installed in distribution box flexibly, achieving the different demand of measurement and statistics of distribution on different areas and different loadings.

Common errors check and solve

1 The meter do not light after powered, or one path of voltage indicator do not light.

Suggestion: Please turn the screw to ensure that the meter needle has been punctured and contacted with the cable inner
conductor cable.

2 Meter’s wireless communication failure

Suggestion: Please connect RS485 interface on the meter and USB convert to 485 serial port to read the parameters, and
confirm whether the parameters are the same as the upper terminal wireless configuration (channel and spread spectrum
factor). If different, please modify the meter’s wireless parameters and retest the master terminal after the same, and if
the same, it may be the meter and master terminal are in a relative long distance. It is too far to communicate or the scene
is seriously disturbed. We can try to use the external antenna at the same time, or consider the newly added wireless
master terminals, and then test it.