2. Connection

Version 2.1 by Admin on 2024/12/12 13:19

Connection

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 × 14
Mounting dimensions (length × width), mm	130 × 50
Mounting holes	M3
Header types	Molex series Micro-Fit

Headers

The BMS IMD 1.x 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

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

X2 – header for a top-level controller (rev1.1 only)

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)

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.

X2 – header for a top-level controller (rev1.2 only)

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

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

X4 – header for negative line connection

Pin	Name	Description
1	LINE-	Negative line
2	LINE-	Negative line

J1 – CAN terminal resistor jumper

To connect the terminal resistor between the CANH and CANL lines, install jumper on pins 2 and 3 like shown on the picture below.