2. Installation and connection

Last modified by Admin on 2025/04/09 08:19

Connection

Safety rules

Before use, configure the system. Proper operation of the BMS IMD is possible only if it is correctly configured.

The BMS can be connected to batteries with life-threatening and health-hazardous voltage levels. When working with high-voltage batteries, observe electrical safety regulations, use safety glasses, protective clothing, insulated tools and appliances. To prevent the damage of device avoid electrostatic discharges while working with the battery.

The system is not designed to operate with batteries whose total voltage exceeds 900V.

Installation

The mounting location must be protected from mechanical obstacles (dust, dirt, large objects) and water. Device placement should provide easy access for connection.

Parameter	Value
Overall dimensions (length × width × height), mm	140 × 60 × 12
Mounting dimensions (length × width), mm	130 × 50
Mounting holes	M3

Headers

The BMS IMD has two headers for connecting the power line (X3 and X4), a header for connecting external equipment and power supply (X2), a chassis connection header (X1) and a jumper which connects a terminal resistor to the CAN bus (J1).

X1 – header for chassis connection

Receptacle Housing: Molex 430250200. Terminals: Molex 43030

Pin	Name	Description
1	CHASSIS	Vehicle chassis connection
2	CHASSIS	Vehicle chassis connection

X2 – header for a top-level controller (v1.1 only)

Receptacle Housing: Molex 430250800. Terminals: Molex 43030

Pin	Name	Description
1	GND	Ground
2	CAN_H	CAN H line for communication with external equipment
3	GND	Ground
4	GND	Ground
5	V+	Device supply line (9-32V)
6	CAN_L	CAN L line for communication with external equipment
7	OUT_WORK	Discrete output for work indication (open drain, max 60V, 1A)
8	OUT_ERROR	Discrete output for error indication (open drain, max 60V, 1A)

X2 – header for a top-level controller (v1.2 only)

Receptacle Housing: Molex 430251200. Terminals: Molex 43030

Pin	Name	Description
1	GND	Ground
2	CAN_H	CAN H line for communication with external equipment
3	GND	Ground
4	GND	Ground
5	GND	Ground
6	GND	Ground
7	V+	Device supply line (9-32V)
8	CAN_L	CAN L line for communication with external equipment
9	OUT_WORK	Discrete output for work indication (open drain, max 42V, 1A)
10	OUT_ERROR	Discrete output for error indication (open drain, max 42V, 1A)
11	KEYRUN_1	Device power on signal
12	KEYRUN_2	Device power on signal

Notes:
The OUT_WORK signal signals the operation of the device’s main program and is generated when the device is turned on.
The OUT_ERROR signal indicates a critical device error or a low insulation resistance value.
The KEYRUN_1 and KEYRUN_2 signals are equivalent and are intended to trigger the device’s power supply circuit. Can be connected to the V+ device supply line.

X3 – header for positive line connection

Receptacle Housing: Molex 436450200. Terminals: Molex 43030

Pin	Name	Description
1	LINE+	Positive line
2	LINE+	Positive line

X4 – header for negative line connection