Pylontech PowerCube-X1 Operation Manual page 34

(3) Switch the MBMS on after all the BMS turn on successful:
And check whether MBMS is working. The "STATUS" lamp will light green.
When the voltage difference between strings is smaller than the parameter, the battery string
will do the parallel operation. Then the power relays in BMS will switch ON after 30 seconds.
The "STATUS" lamp of the BMS will light green;
When the voltage difference between strings is bigger than the parameter, the battery string
will NOT do the parallel operation, the "STATUS" lamp of the BMS will light red, but it is normal;
Such battery string will be paralleled in during charging stage automatically.
Note: If there is no communication between MBMS and upper controller, the system can't
work normally. External device should communicate with battery system through LAN, CAN
or MODBUS RTU. Otherwise maybe cause battery system work abnormal.
Caution: During first time power on, the system will require to do fully charge progress for SOC
calibration purpose.
Attention: Lors de la première mise sous tension, le système devra effectuer une procédure de
recharge complète pour l'étalonnage SOC.
Caution: The whole Battery Energy Storage System (BESS) after installation or restart the system when
long time not in using should charge it to full at first.
Pour l'ensemble du système de stockage d'énergie de batterie (BESS) après l'installation ou le
redémarrage du système après une longue période d'inactivité, il faut le charger complètement au
début.
There will be a regularly (3 month) fully charge requesting during continuous operation as well, it will
be handled automatically by the communication between BESS and external device.
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