2. BMS1601 Pinouts and Descriptions

On BMS1601 there are connectors for the cell connections, temperature sensors, relay outputs, isolated communications and I/Os, and screw terminals for the battery, the load, the MOSFET middle point and the precharge and pre-discharge resistors. Arrange the cables with the pinouts below; a number in the figures opens the table of that connector.

Danger

Check every connection and cable before you plug a connector into the BMS1601.

Fig.2.1: BMS1601, Board Pinout (TOP)

Fig.2.2: BMS1601, Board Pinout (FRONT)

Fig.2.3: BMS1601, Board Pinout (BACK)

Table.2.1: Connector No#1 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.2)
1	1	ISO GND Output
1	2	CAN 2.0b Low Pin (CAN-L)
1	3	ISO 5V Output
1	4	CAN 2.0b High Pin (CAN-H)

Table.2.2: Connector No#2 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.2)
2	1	RS232 No.0 Transmit Data (Service Port)
2	2	RS485 B Pin
2	3	ISO GND Output
2	4	RS232 No.0 Receive Data (Service Port)
2	5	RS485 A Pin
2	6	ISO 5V Output

Table.2.3: Connector No#3 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.2)
3	1, 2, 3, 4	ISO GND Output
3	5	ISO 5V Output
3	6	Isolated TTL Input 2 (LiMon INPUT 2)
3	7	Isolated TTL Input 1 (LiMon INPUT 1)
3	8	Isolated TTL Output 1 (LiMon OUT 1)
3	9	Isolated TTL Output 2 (LiMon OUT 2)
3	10	Isolated TTL Input 3 (LiMon INPUT 3)

Table.2.4: Connector No#6 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.2)
6	1	Relay 1 Common Pin (LiMon OUT 3)
6	2	Relay 2 Normally Open Pin (LiMon OUT 4)
6	3	Relay 2 Normally Closed Pin (LiMon OUT 4)
6	4	Relay 1 Normally Closed Pin (LiMon OUT 3)
6	5	Relay 1 Normally Open Pin (LiMon OUT 3)
6	6	Relay 2 Common Pin (LiMon OUT 4)

Table.2.5: Connector No#9 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.3)
9	1	Board VIN+ (Board Main Power, 16 to 80 V; B+ and B− do not supply the board)
9	2	Board VIN+ Output
9	3	External Button Input
9	4	Board GND (Board Main Power)

Table.2.6: Connector No#10 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.3)
10	1	Board VIN+ Output (for the external button)
10	2	External LED- Output (LED GND)
10	3	External Button Input
10	4	+12V Output (for the external LED)

Table.2.7: Connector No#11 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.3)
11	1, 2	Bottom of the battery string, 1st cell's negative tab (C1-)
11	3	2nd cell's positive tab (C2+)
11	4	4th cell's positive tab (C4+)
11	5	6th cell's positive tab (C6+)
11	6	8th cell's positive tab (C8+)
11	7	10th cell's positive tab (C10+)
11	8	12th cell's positive tab (C12+)
11	9	14th cell's positive tab (C14+)
11	10	Top of the battery string, 16th cell's positive tab (C16+)
11	11	Bottom of the battery string, 1st cell's negative tab (C1-)
11	12	1st cell's positive tab (C1+)
11	13	3rd cell's positive tab (C3+)
11	14	5th cell's positive tab (C5+)
11	15	7th cell's positive tab (C7+)
11	16	9th cell's positive tab (C9+)
11	17	11th cell's positive tab (C11+)
11	18	13th cell's positive tab (C13+)
11	19	15th cell's positive tab (C15+)
11	20	Not Connected

Table.2.8: Connector No#12 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1 and Fig.2.3)
12	1, 2, 3	Temperature Sensor Return (Board GND)
12	4	External Temperature Sensor No.1
12	5	External Temperature Sensor No.2
12	6	External Temperature Sensor No.3

Table.2.9: Connector No#13 Descriptions

Connector No.	Pin No.	Description (see Fig.2.1)
13	-	CAN and RS485 Termination Switch

Table.2.10: Power Terminals

Terminal	Description (see Fig.2.1)
B−	Battery Negative (BATT−)
B+	Battery Positive (BATT+)
L−	Load Negative (PACK−)
L+	Load Positive (PACK+)
MID	Middle Point of the Charge and Discharge MOSFETs (MID)
PC	Precharge Resistor Connection (resistor not fitted in the standard product)
PD	Pre-discharge Resistor Connection (resistor not fitted in the standard product)