8.2 PYLONTECH BATTERIES IN PARALLEL
3.1 Battery connection
In case of MULTIPLE BATTERIES, connect the communication cable from the
COM
port of the inverter to
the
BMS-CAN
port of the MASTER battery, after having defined the correct positioning of the DIP Switches
(see following pages).
9.1.2 WECO 4K4 BATTERIES IN PARALLEL
Communication connections between batteries and inverter:
Batteries
are connected
IN PARALLEL
to each other.
•
BMS-CAN of
master battery
COM Port of
inverter
•
RS485-B of
master battery
RS485-A of
slave 1 battery
•
RS485-B of
slave 1 battery
RS485-A of
slave 2 battery
•
…
•
RS485-B of
slave N-1 battery
(second last)
RS485-A of
slave N battery
(last)
Power connections between batteries and inverter:
Batteries must be connected in a “loop.”
•
Positive input (+) of
master battery
connected to positive input (+) of
inverter
.
•
Positive input (+) of
master battery
connected to positive input (+) of
slave 1 battery
.
•
Negative input (-) of
master battery
connected to negative input (-) of
slave 1 battery
.
•
…..
•
Positive input (+) of
slave N-1 battery
(second-last) connected to positive input (+) of
slave N battery
(last).
•
Negative input (-) of
slave N-1 battery
(second-last) connected to negative input (-) of
slave N battery
(last).
•
Negative input (-) of
slave N battery
(second-last) connected to negative input (-) of
inverter
.
NOTE:
When switched on for the first time, the WeCo batteries receive a command from the inverter to
start regular operation only when all of them have collectively reached a state of full charge (i.e. a SOC
level of 100%).
