1. Technical specifications
Technical specifications
The BMS Main 3X is a device that controls a complex battery system consisting of multiple battery modules. The BMS Main 3X interacts with battery modules based on the BMS Main 3, provides dynamic connection of battery modules for charging and operating on load, calculates and transmits information about the state of the battery system to a top-level system.
Specifications
| Parameter | Value |
| Power supply | |
| Supply voltage, V | 9 to 32 |
| Current consumption at supply voltage 24 V, mA, max | 150 |
| KEYRUN or CHARGE_ON signal for turning on the device, V, min | 8.5 |
| Scalability | |
Number of battery modules connected in parallel, max | 32 |
| Controls | |
| Number of programmable switches for controlling 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 |
| Sensors | |
| Number of connected current sensors (two signal lines for each sensor) | 3 |
Error in measuring signals from current sensors, V, max At ambient temperature 25 ± 5 ºС | 0.001 |
| Current sensor types | Bidirectional with 5V supply voltage (LEM series HASS, HTFS, DHAB or analogues) |
| Number of high voltage measurement inputs (two signal lines for each input) | 2 |
| High voltage measurement range, V | 10 to 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, ºС, max In the measurement range from -20 to +85 ºС | ± 2 |
| Temperature measurement error using a built-in temperature sensor, ºС, max | ± 2 |
| Humidity measurement error using a built-in humidity sensor, %, max | ± 10 |
| High-voltage interlock loop (HVIL) | |
| Current in the HVIL, mA, typical | 25 |
| Total resistance in the HVIL, Ohm, max | 200 |
| Interfaces | |
| Number of USB interfaces | 1 |
| USB speed, Mbit/s | 12 |
| Number of CAN interfaces | 3 |
| CAN speed, kbit/s | 125, 250 (by default), 500, 1000 |
| Number of RS-485 interfaces | 2 |
| RS-485 speed, bit/s | 600, 1200, 2400, 4800, 9600 (by default), 19200, 38400, 57600, 115200 |
| Output voltage of CAN2 power supply, V | 5.0 ± 0.5 |
| Output current of CAN2 power supply, mA, max | 400 |
| Connecting an additional expansion interface module | BMS Wi-Fi, BMS GSM, BMS LANmodule |
| Galvanic isolation | |
Rated insulation voltage, VRMS, min Conditions: duration 1 minute, AC 50 Hz, 1) between connectors of CAN1, RS-485-1, discrete inputs/outputs interfaces and device power circuits, 2) between connectors of CAN1, RS-485-1, discrete inputs/outputs interfaces and high voltage measurement circuits, 3) between the device power supply circuits and the high voltage measurement circuits | 3500 |
| Weight and overall dimensions | |
| Overall dimensions (length × weight × height), mm | 200 × 123 × 12 |
| Weight, g, max | 160 ± 5 |
| Operating conditions | |
| Operating temperature range, °С | -40 to +85 |
Overall and mounting dimensions
