eVault Max 18.5 Manual

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V4.2 11-02-21
4.5.4 Battery Communications
The eVault Max 18.5 has a self-contained Battery Management System (BMS). No communication is required
between a battery-based inverter and the eVault Max 18.5 to operate the system, though closed loop
communication is recommended to improve battery and inverter performance.
The Communication Box has five ports next to the battery breaker (refer to communication box picture
below). Those ports are designed to support Inverter RS-485 and CAN communication, battery parallel
communication (see section 4.4.6.) and USB Logging.
These ports also support MODBUS and CANBUS communication. Please consult with Fortress Technical
Support for further assistance.
4.5.5 Grounding
The Fortress eVault Max 18.5 has two grounding lugs on the bottom of battery case.
4.5.6 System Commissioning
If you’re installing a single eVault Max 18.5, please follow the below steps to start up the system.
1. When using a single battery be sure to set the “Battery ID” to 0 or the unit will not start.
2. Check the DC cables for correct polarity.
3. Switch the battery’s 250A breaker to the “ON” position.
4. Switch inverter breaker to the “ON” position.
5. Push the power button on the front of the unit for approximately 8 seconds until the status light and LCD
light up.