BMS Main 3X

Version 8.1 by Admin on 2024/12/25 14:04

BMS Main 3X firmware update procedure is described here.

v3.2.0

new algorithm in the Charging/Discharging controller that allow to control the Charging/Discharging contactor independently from the Charging and Discharging signals (see the "Control - Charge/Discharge" section). The new "Independent" algorithm is preferred in the battery systems with one contactor
new "Need acknowledge" warning signal that is set when a new record is created in the errors journal. The signal can be cleared in the "Service - Errors journal" section
new Max-Min algorithm for calculating the final battery SOC in the "Control - Calculation" section
improved control of the precharging contactor, which can precharge capacitive load using multiple attempts and detect high power dissipated in the precharge resistor (see the "Control - Precharge" section)
ability to select errors that the device saves in the errors journal (see the "Service - Errors journal" section)

ability to finish device initialization even if the number of battery modules found is less than the number of modules enabled
ability to configure and monitor the device via the CAN1 (ext) bus
placing the device input signals to the "Battery" section and adding raw discrete inputs to the "Signals" section
Unibat: support for functional description v3.5 (protocol v1.5)

resolving the problem of incorrect range of temperature parameter values (in the "Control - Coolant pump" section)
resolving the possible problem of saving device parameters
resolving the problem of writing the device's working time to a non-volatile memory very often
resolving the issue of preparing battery module states written to Modbus registers

new parameter to set the minimum number of battery modules allowed to join (see the "Control - Charge" and "Control - Discharge" sections)
ability to rejoin battery modules if their voltage is close to the battery voltage (see the "Control - Charge" and "Control - Discharge" sections)
selection of errors that cause reset of contactor control signals (see the "Control - Main contactor", "Control - Charge", "Control - Discharge", "Control - Heater", "Control - Cooler", "Control - Coolant pump" sections)
new internal signal "General error (modules)" which is the logical sum of the "General error" signals from the battery modules
new assignments "Critical error" and "General error (modules)" for the discrete outputs and power switches (see the "Signals - Output discrete signals - Assignments" and "Signals - Power switches - Assignments" sections)

use the measured voltage before contactors as the battery voltage if the "Control - High voltage" function is enabled
Unibat: new flag to enable sending a control message to start/stop ventilation fans installed in the battery modules (see the "External equipment - Unibat vehicle" section)
rearrangements in the settings sections, which are made to simplify the setup process