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BMS Main 2.1

Controller

Modular BMS for 24-1200V batteries

BMS Main 2.1 interacts with measuring modules, calculates the battery state, and protects the battery from damage.

BMS Main 2.1 can control up to 23 measuring modules and manage a battery consisting of 414 cells.

BMS Main 2.1

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  • 4 solid-state relays for contactors
  • 4 discrete inputs
  • 4 discrete outputs

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  • SOC, DOD, SOH estimation
  • Cycles, energy counting

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  • CAN, RS-485, Ethernet
  • Wi-Fi (over an extension module)

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  • SD-card logging
  • IoT ready

Links

Documentation

Firmware

Downloads

ElectricDeviceMonitor

Compatible controllers: BMS Main X

Compatible measuring modules: BMS Logic 12S, BMS Logic 12, BMS Logic 18, BMS Logic 2.0

Compatible displays: BMS Display, BMS Indication

Compatible additional modules: BMS IMD, BMS Wi-Fi

ParameterValue
Supply voltage, V 9 to 30
Current consumption @12 V, mA (max) 100
Number of BMS Logic devices 1 to 23
Number of cells (maximum) 414
Number of programmable solid-state relays for contactors (55V, 3A) 4
Number of programmable discrete inputs (dry contact) 4
Number of programmable discrete outputs (+5V, total 200mA) 4
Current sensor type Hall-Effect sensor, bidirectional, supply voltage 5 V (LEM series HASS, HTFS)
Current sensor signal measurement error, V (maximum) ± 0.001
Number of CAN interfaces 1
CAN bus speed, kbps 125, 250 (default), 500, 1000
Number of RS-485 interfaces 2
RS-485 baud rate, bps 600, 1200, 2400, 4800, 9600 (default), 19200, 38400, 57600, 115200
CAN output voltage, V 5.0 ± 0.5
CAN output current, mA (maximum) 400
Number of Ethernet interfaces 1
Ethernet speed, Mbps 10/100
Dimensions (length × width × height), mm 120 × 120 × 17
Weight, g 100 ± 10
Operating temperature range, °С -40 to +85
The degree of protection from external influences IP00

BMS Main 2.1 can be configured using the web interface over Ethernet or a Wi-Fi network (in this case, the BMS Wi-Fi module must be installed).
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Another way to configure BMS Main 2.1 is to use ElectricDeviceMonitor software. A USB-CAN adapter is required to connect to the device.
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