BMS Main 3 / BMS Main 3X
Controller / Strings controller
Modular BMS controller for 24-2000V batteries
Depending on firmware, device can act as a battery controller (BMS Main 3) that interacts with measuring modules, or as a controller of parallel batteries (BMS Main 3X).
BMS Main 3 can control up to 40 measuring modules and manage a battery consisting of 720 cells.
BMS Main 3X controls up to 32 batteries connected in parallel, each of them is managed by the BMS Main 3.
- 6 switches for contactors
- 8 discrete inputs
- 4 discrete outputs
- SOC, DOD, SOH estimation
- Cycles, energy counting
- 3xCAN, RS-485, USB
- Wi-Fi, LAN, GSM (over an extension modules)
- SD-card logging
Links
Documentation for BMS Main 3Downloads
ElectricDeviceMonitorCompatible controllers (for BMS Main 3X only): BMS Main 3
Compatible measuring modules (for BMS Main 3 only): BMS Logic 12S, BMS Logic 18S, BMS Logic 12, BMS Logic 18, BMS Logic 2R
Compatible displays (for BMS Main 3X only): BMS Display
Compatible displays (for BMS Main 3 only): BMS Display, BMS Indication
Compatible additional modules: BMS IMD, BMS Wi-Fi, BMS LANmodule, BMS GSM
| Parameter | Value |
|---|---|
| Supply voltage, V | 9 to 32 |
| Current consumption @24 V, mA (max) | 150 |
| KEYRUN or CHARGE_ON signal for powering on the device, V, (minimum) | 8.5 |
| Number of BMS Logic devices (relevant for BMS Main 3) | 1 to 40 |
| Number of cells (maximum) (relevant for BMS Main 3) | 720 |
| Number of parallel batteries (relevant for BMS Main 3X) | 1 to 32 |
| Number of programmable switches for contactors (9-32V, 2.5A) | 6 |
| Number of programmable discrete inputs (dry contact) | 6 |
| Number of programmable discrete inputs 9-32V | 2 |
| Number of programmable discrete outputs (open drain, 40V, 1A) | 4 |
| Number of connected current sensors (two signal lines for each sensor) | 3 |
| Error in measuring signals from current sensors, V, max | ± 0.001 |
| Current sensor types | Hall-Effect sensor, bidirectional (LEM series: HASS, HTFS, DHAB or analogues) |
| Number of HV measurement inputs (two signal lines on each input) | 2 |
| High voltage measurement range, V | 10 ÷ 1000 |
| High voltage measurement error, V, max | ± 2 |
| Number of connected external temperature sensors (100 kOhm NTC-thermistors) | 2 |
| Temperature measurement error using external temperature sensors, ºC, max | ± 2 |
| Temperature measurement error using a built-in temperature sensor, ºC, max | ± 2 |
| Humidity measurement error using a built-in humidity sensor, %, max | ± 10 |
| Current in the HVIL, mA, typical | 25 |
| Total resistance in the HVIL, Ohm, max | 200 |
| Number of USB interfaces | 1 |
| USB speed, Mbit/s | 12 |
| Number of CAN interfaces | 3 |
| CAN speed, kbps | 125, 250 (default), 500, 1000 |
| Number of RS-485 interfaces | 2 |
| RS-485 bus speed, bps | 600, 1200, 2400, 4800, 9600 (by default), 19200, 38400, 57600, 115200 |
| Output voltage of CAN2 power supply, V | 5 ± 0.5 |
| Output current of CAN2 power supply, mA, max | 400 |
| Rated insulation voltage, AC 50Hz, 1 minute, VRMS (minimum): 1) Between CAN1, RS-485-1, discrete inputs/outputs and power lines, 2) Between CAN1, RS-485-1, discrete inputs/outputs and HV measurement lines, 3) Between power lines and HV measurement lines | 3500 |
| Dimensions (length × width × height), mm | 200 × 120 × 12 |
| Weight, g | 150 ± 10 |
| Operating temperature range, °C | -40 ÷ 85 |
| The degree of protection from external influences | IP00 |
