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SUN-BATT-5.12R | Installer Manual
Each SUN-BATT-5.12R has two pairs of power cable terminals, two P+, and two P-. The con-
nec- tion terminals of each pair have the same function.
Single Module
In a single module application, any of the terminals of each pair can be used.
Parallel System
Multiple batteries can be connected in parallel to expand the capacity and power. When using
multiple batteries in parallel, one will operate as a master and the others as slaves. One of the
Master
pack P+ terminals should connect to the PCS, and the other should connect to another
battery for capacity expansion.
One of the P- terminals of the last
Slave
pack should connect to PCS, and the other should
connect to another battery for capacity expansion.
For the other
Slave
packs, each P terminal should be connected to another battery's terminal.
4.2. Parallel Cascade Connection
4.2.1. Power Cable Wiring Instructions
The connection to the protection devices should use the P+ terminal from the Mas-
ter pack and the P- terminal from the last Slave pack.
The Master battery can automatically identify the Slaves batteries connected in parallel using
its internal software control. The communication terminals Port In and Port Out (RJ45 port) are
integrated with the signal for automatic coding function.
The following describes the connections of a system with four batteries packs, one Master, and
three Slaves.
The
CAN
communication port of the
Master pack should connect to PCS
;
Port In from the Master pack should not be connected;
The Port Out from the master PACK should connect the Port In of the first slave PACK using
a parallel communication wire;
The Port Out of the first Slave pack should connect to the Port In of the second Slave PACK;
Following the same pattern, the Port Out of the second Slave pack should connect to the
Port In of the third Slave PACK;
The Port Out of the third and last slave PACK should not be connected.
4.2.2. Communication Cable Connections
