External Rs 485 Connection - Redx RX Series User Manual

Notice：
1. The grid terminal and off-grid terminal cannot be directly connected together, otherwise the
system will be damaged.
2. The off-grid terminal cannot be connected to the grid, otherwise the system will be damaged.
3. The battery needs to be activated by the grid when the system starts for the first time.
4. The UPS Load on-off switch in Figure 5-3 and Figure 5-4 can be installed by customers
according to their own needs.
5. The customer can use an external RCD if it is required, the unit does not have an in-built RCD.
6. The maximum current of the AC OUT is 10A (The maximum power of the AC OUT is 2500W).
7. Either the DC1 and DC2 can be connected to solar panels or wind power generator via
optimizers/ controllers. The maximum current of the DC1 and DC2 inputs is 25A (each), It is
recommended that the output voltage of photovoltaic optimizer and wind turbine controller be set
to 51.5v

5.3 External RS 485 Connection

RX-2505PU has an USB RS 485 port allowing customers to connect their own devices.
1. Unscrew the rubber nut on the water-proof cover of the system (RS485)；
2. The detail of the USB RS 485 as shown in Figure 5-5；
Note: The RX-2505PU has a Wi-Fi module inside. If customers use another Wi-Fi module or
other communication module, they need use the default USB RS 485 port.
Rev 20220610
PV optimizer / wind turbine controller
+ - +
DC1 DC2
input input
RX-2505PU
AC OUT
L PE L
N
UPS
Load
Figure 5-4 - 240V and DC connections
PV optimizer / wind turbine controller
-
AC IN
N PE
RX2505PU
L
N
PE
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