2. Installation and connection

Last modified by Admin on 2025/02/20 13:13

Installation and connection

Installation

The mounting area of the BMS Main X must be protected from mechanical particles (dust, dirt, large objects) and water.

The installation site must provide convenient access for subsequent connection to the device’s headers for connecting other system elements: contactors, temperature sensors, etc.

Overall and mounting dimensions of the BMS Main X are shown below.

1734355103230-973.png
1734355103237-284.png

Parameter

Value 

Overall dimensions (length × width × height), mm

105 × 115 × 15 
Mounting dimensions (length × width), mm99 × 109
Mounting holesM3

Connection

Headers

There are names and locations of the BMS Main X headers in figure below.

1734355208744-833.png  

Х1 – header for power supply

Receptacle Housing: Molex 436450200. Terminals: Molex 43030

1734355208747-667.png

PinNameDescription
1V+Supply voltage 18÷36V
2GNDGround

X2 – header for USB

X3 – header for CAN (INT) interface

Receptacle Housing: Molex 430250400. Terminals: Molex 43030

1734355229969-197.png

PinNameDescription
1СAN_INT_HCAN-H line of the internal CAN bus (communication with battery modules)
2CAN_INT_LCAN-L line of the internal CAN bus (communication with battery modules)
3CAN_INT_5VIsolated 5V power supply for internal devices, max 200 mA
4CAN_INT_GNDIsolated ground

Х4 – header for RS-485 interface

Receptacle Housing: Molex 430250400. Terminals: Molex 43030

1734355229969-197.png

PinNameDescription
1RS485_AA line of the external RS-485 bus
2RS485_BB line of the external RS-485 bus
3--
4RS485_GNDIsolated ground

J1 – jumper for switching RS-485 terminal resistor

To connect the terminal resistor between the RS485_A and RS485_B lines, install the jumper J1 according to the following figure:

1734355346488-798.png

Х5 – header for CAN (EXT) interface

Receptacle Housing: Molex 430250400. Terminals: Molex 43030

1734355229969-197.png

PinNameDescription
1СAN_EXT_HCAN-H line of the external CAN bus (communication with a top-level system)
2CAN_EXT_LCAN-L line of the external CAN bus (communication with a top-level system)
3CAN_EXT_5VIsolated 5V power supply for external devices, max 200 mA
4CAN_EXT_GNDIsolated ground

J2 – jumper for switching CAN (EXT) terminal resistor

To connect the terminal resistor between the CAN_EXT_H and CAN_EXT_L lines, install the jumper J2 according to the following figure:

1734355346488-798.png

Х6 – header for sold-state relays

Receptacle Housing: Molex 430250600. Terminals: Molex 43030

1734355584041-898.jpeg

PinNameDescription
1NO1Normally open contact of the relay 1
2NO2Normally open contact of the relay 2
3NO3Normally open contact of the relay 3
4COM1Common contact of the relay 1 (55V, 2A)
5COM2Common contact of the relay 2 (55V, 2A)
6COM3Common contact of the relay 3 (55V, 2A)

X7 – header for discrete inputs/outputs

Receptacle Housing: Molex 430251800. Terminals: Molex 43030

1734355584043-416.jpeg

PinNameDescription
1GNDDiscrete input 1 “dry contact” (ground)
2GNDDiscrete input 2 “dry contact” (ground)
3GNDDiscrete input 3 “dry contact” (ground)
4GNDDiscrete input 4 “dry contact” (ground)
5--
6GNDDiscrete output 1 (ground)
7GNDDiscrete output 2 (ground)
8GNDDiscrete output 3 (ground)
9GNDDiscrete output 4 (ground)
10D_IN1Discrete input 1 “dry contact” (+5V)
11D_IN2Discrete input 2 “dry contact” (+5V)
12D_IN3Discrete input 3 “dry contact” (+5V)
13D_IN4Discrete input 4 “dry contact” (+5V)
14--
15D_OUT1Discrete output 1 (+5V, 20mA)
16D_OUT2Discrete output 2 (+5V, 20mA)
17D_OUT3Discrete output 3 (+5V, 20mA)
18D_OUT4Discrete output 4 (+5V, 20mA)

Х8 – header for temperature sensors

Receptacle Housing: Molex 430250400. Terminals: Molex 43030

1734355229969-197.png

PinNameDescription
1TEMPG1Ground of the thermistor 1
2TEMPG2Ground of the thermistor 2
3TEMP1Signal from the thermistor 1
4TEMP2Signal from the thermistor 2