Operating Manual

Installation, assembly and commissioning for
the first time
Version 1.1 Page 63 of 92
4.13 Configuration of firmware for parallel mode
Use the BMZ service tool to configure the battery using the USB service port.
The following files must be available to configure the battery parameters:
1. ESS30ServiceTool.exe (example: current service tool V0.0.26)
2. System.Windows.Interactivity.dll
3. Optional for firmware update: 31502A_V205.flash (example: current firmware V2.05)
Important: All three files must be in the same folder.
Figure 4-28: file structure of the BMZ ESS service tool
4.13.1 Setting the master battery mode
In a group of multiple BMZ ESS 7.0 batteries connected in parallel, configure one battery as a master.
Important:
1. Set the “Master” mode and configure the battery parameters by clicking on “set mode”.
2. In a group of multiple BMZ ESS 7.0 batteries connected in parallel, only one battery may be configured as a
master.
Figure 4-29: representation of configuration of the parameters of a BMZ ESS battery
3. IMPORTANT: Configure the parameters of the battery with the maximum voltage level and the maximum
charge status as the master battery.