Sol-Ark Integration Guide

Notes
a) At 'Shutdown' voltage, inverter prevents battery from powering the loads. The battery(s) will renew/continue providing
power to the loads when the battery bank is recharged to 'Restart' voltage. 'Shutdown' and 'Restart' voltage set-points can be
increased to increase the "reserve capacity" of the system, but that will cause less battery charge usage. The correct
'Shutdown' level is specific to the project site.
b) Low battery is an alarm also specific to the project site, integrated with the Sol-Ark monitoring app. We suggest a 51.4V
as a low battery alarm level. But it is a good idea to increase it if the 'Shutdown' and 'Restart' set-points are increased.
c) The battery empty voltage should not be lower than 48V. The last statement from the previous note applies to the 'Batt
Empty V'. Usually this set-point does not exceed 50V.
Setting-up Communication EVMX
eVault Max batteries have four Ethernet ports: two COM Parallel Ports, CAN port, and RS485 port. The latter two are used
for battery to inverter communication purposes, whereas the COM Parallel ports are used to establish battery to battery
communication. COM Parallel ports are bi-directional. CAN Bus terminators are built into the communication board and
are applied as needed using a switch. To set up a closed-loop communication with eVault Max batteries, please follow the
instructions and refer to the graphic below. Also, refer to the following link for a short demo
video: https://www.youtube.com/watch?v=z5OWjNpz9X0&feature=youtu.be
· While having the batteries turned off and having their DC breakers in the off position, daisy-chain the battery
to battery communication cables using the bi-directional COM Parallel ports.
· After daisy-chaining the battery to battery communication cables, plug the battery to inverter communication
cable into the RS485 port into the first eVault max in the sequence and the other end of this cable into the
Battery CAN Bus port on the Sol-Ark (if you need to make your own modified cable for battery to inverter
communication, refer to the diagram given in the graphic below).
· CAN Bus terminator switch must be in the "120Ω"position on the first and the last batteries in the sequence,
having the switch in the "OFF" position on all other batteries.
· If you have not received a modified Ethernet cable, you can make your own. You may use the yellow ethernet
cable included with the inverter. Simply disable pins 1-5 (cut them, so no signal can pass through), having pins
6, 7, and 8 active.
Tape the Ethernet jacket back up when finished.
· Connect the CANbus terminator to the other (remaining) empty port of the battery bank.
· Refer to the diagram below for a visual insight.
The instructions given above must be followed precisely to establish a closed-loop communication.