1. GENERAL STEPS
Make sure to always use the latest version of this service document, available at:
Please proceed first with the installation steps by:
No.
Name
Description
1
Configuration
Check if the configuration is correct. Refer to latest “BYD Battery-Box Premium LVS
Minimum Configuration List” (V1.7 or above) available at:
Make sure the inverter is configured correctly.
2
Correct external
cabling
1.
Communication to inverter
a.
Depending on the choice of inverter the cable between the BMU port
and the inverter must be specially made. Please check the
specifications in the installation manual.
b.
Recommended CAT5 or higher;
c.
Check the cables and replace them if necessary
2.
Grounding
a.
Battery-Box connected directly to the ground-bus of the house.
b.
The battery must not be earthed via the inverter! Otherwise,
communication problems are possible.
3.
Ethernet-Cable for Internet (
strongly recommended!
)
4.
Correct parallel connection cabling if applicable
5.
DC-Ports - Make sure that
+
and
-
are properly connected. (Male DC Connector
piece required)
Notes about DC connection:
- DC cable cross section: depends on the respective configuration. BYD does not specify
a necessary cable cross-section herePlease pay attention to the power and current of
the battery and the inverter, as well as the local rules.
- The DC male connectors (35mm² / 50m² / 70mm²) are not included in the PDU scope
of delivery. They need to be ordered separately from your PV distributor.
3
Latest Firmware
Always update the
newest Firmware
! (with using the latest App Version)
Note: If not stated otherwise, wifi password is BYDB-Box
4
App Configuration
To complete the commissioning, the configuration of the battery via “Be Connect” App
or PC tool “Be Connect Plus” (BCP) is
mandatory
! Please restart battery afterwards.
5
Proper Restart
Switch off:
1.
Press BMU LED Button for 5 seconds. All modules should be off then. Make
sure all LEDs of the battery are completely off. Note: if the modules do not
turn off then, something is wrong in the PDU<>BMU connection. Replace
comm cable and try again.
Switch on (mind the sequence!)
1.
Switch on the fuse between Inverter and Battery (if there is any)
2.
Switch on the Battery (press LED Button on the topmost module for 3
seconds. All modules should become active then)
3.
Turn on the inverter
6
Checking the correct
operation
The system runs properly if:
- Inverter displays battery SOC correctly
- System charges / discharges
Note:
If you can not complete the commissioning, then turn off the battery before you
leave the site and make sure all LEDs are off to avoid a discharge of the battery.
3
