On the test, I have OLT Huawei SmartAX MA5683T and EPS30-4815AF power supply.
Connect them with a regular twisted pair patchcord with RJ45 connectors.
From the OLT side, we connect the cable to the ESC port on the control board, and on the EPS30-4815AF to RS485.
After this, the OLT will be able to send commands to the EPS30-4815AF.
RS232 port is active by default, and RS485 is reserved, they cannot be used at the same time.
Open the OLT console and add EPS30-4815AF:
enable config emu add 1 POWER4830L 0 0 4815AF
On the EPMU03 monitoring module, it is necessary to set the DIP switches correctly, for example, enable 1 and 2, turn off the rest (this will result in subnode id 3), 6 DIP determines the speed if 9600 bit/s is enabled, if 19200 bit/s is disabled. By default, only 6 DIPs are enabled, and the rest are disabled. 7 and 8 DIPs are reserved, they are always off.
If the required model is not in the list, you can choose a similar one, as I did, for example, instead of 4815AF I chose POWER4830L, at the end of the line 4815AF is just a note.
Now let’s move on to managing added emu:
interface emu 1
Let’s look at the current parameters:
display power system parameter display power environment parameter
Using the question mark “?” you can watch the available commands and subcommands.
The standard settings were 100Ah and a battery test every 60 days.
With the following command, I changed the period to 30 days and the battery capacity to 26Ah (as they were going to connect four batteries in series to 12V / 26Ah which were idle):
power battery parameter 0.15 30 1 26
After the settings, we’ll exit the emu 1 interface settings and save the configuration:
Example for removing emu:
emu del 1
The EPS30-4815AF power supply has two independent rectifier modules GERM4815T, which is more reliable, for example, if the RUN indicator on one of them stops illuminating, the module must be replaced. In 2021, in China, GERM4815T was $36, EPS30-4815AF for 15A – $150, and for 30A – $180, + shipping and customs clearance. The MA5608T has an input current of 10A DC and 6A AC.
See also my article:
Configuring Huawei SmartAX MA5683T via the console