Networking Discover Lithium Batteries with LYNK II

NOTE
Turn OFF all devices before connecting cables. Do not plug a LYNK RJ45 network cable or terminator into the 10/100 Ethernet port of the LYNK II. Do not connect a CAT5 cable from the LYNK or Ethernet ports of the LYNK II to a WAN or MODEM port of a network router. Mixing the LYNK Network with other networks may result in equipment malfunction and damage.

NOTE
Unless specified by Discover Energy Systems, power electronics must not be connected directly to the LYNK network.

Refer to the LYNK II Installation and Operation Manual (805-0033) for detailed instructions on network layouts, connections, and terminations for compatible Discover Lithium battery models. Some key reminders are repeated here for convenience.

At least one battery must be connected to the LYNK Port on LYNK II.
A network of batteries will communicate as one battery.
No more than one network of batteries may be connected to LYNK II.
Network termination is required for the system's proper functioning - note some batteries and devices may auto-terminate.
LYNK II requires power from three possible sources (13-90 VDC power supply, LYNK Port enabled Discover Lithium battery, or a USB device).
Discover Lithium batteries must be set to ON to supply power and communicate data with LYNK II.

AES RACKMOUNT

Both LYNK II and AES RACKMOUNT Battery Modules are internally terminated. No extra termination is required.

HELIOS ESS

Both LYNK II and HELIOS ESS batteries are internally terminated. No extra termination is required.

NOTICE

TERMINATION REQUIREMENT

HELIOS ESS Batteries prior to serial number DLPHD48B251080001 are supplied with a termination resistor. When setting up closed-loop communication with these HELIOS ESS Batteries, plug the termination resistor into the COM3/COM4 port on the last battery in the LYNK network.

Failure to follow these instructions may result in equipment damage.

NOTE
HELIOS ESS batteries also support closed-loop communication with SAJ H2 Series inverters without using the LYNK II Communication Gateway. Connect a CAT5e or higher straight cable from the HELIOS ESS COM2 port to the inverter’s BMS port.