Pylontech PowerCube-X1-V2 Operation Manual page 39

Warning: If it has failure during the self-check, must
debug the failure then it can start next step.
If the "STATUS" lamp shows red from beginning, it means has failure
in the battery string, the Power Relays in BMS will switch ON, must
debug at first.
Caution: During first time power on, the system will
require to do fully charge progress for SOC calibration
purpose.
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. There will be
a regularly
operation as well, it will be handled automatically by the
communication between BESS and external device.
Warning: if the black-start function is used, the terminal
of DC "D+" and DC "D-" will be electricity dangerous with
high DC voltage output.
3.7.2.4. Black Start
If long press the start button 30s AFTER power on. The "STATUS"
lamp will become green.
if the black start function is enabled. If "STATUS" lamp remain red,
the black start function is failed to active, it needs long press
start button again. System will close relay and output for 10mins.
Warning: if the black-start function is enabled, the terminal
of D+ and D- will be electricity dangerous with high DC voltage
output.
3.7.2.5. Pre-charge function (Soft start)
The BMS has Pre-charge function. In each parallel operation, Pre-
charge function will work.
If the pre-charge failure, it will retry the function after 30s.
Pre-charge failed for 3 consecutive times, the battery system will
be Pre-charge error.
fully charge requesting
34
during continuous