Wiki source code of 2. Installation and connection

Last modified by Admin on 2025/03/18 12:51

version	line-number	content
49.1	1	(% data-numbered-headings-start="2" style="--numbered-headings-start: 1;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
	2	= Installation and connection =
25.4	3
63.1	4	== Safety rules ==
	5
65.1	6	To perform the protection functions, the BMS must be able to disconnect the battery from the load and charger. To do this, at least one contactor able to break the load and charge circuits must be connected to the BMS.
63.1	7
	8	Before use, configure the system. Proper operation of the BMS is possible only if it is correctly configured.
	9
66.1	10	(% class="box errormessage" %)
63.1	11	(((
	12	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.
	13	)))
	14
	15	(% class="box errormessage" %)
	16	(((
66.1	17	The system is not designed to operate with batteries whose total voltage exceeds 1200 V.
63.1	18	)))
	19
49.1	20	== Installation procedure ==
	21
45.1	22	Overall and mounting dimensions of the BMS Main 2.1 are shown below.
26.2	23
44.1	24	[[image:1732198397369-222.png\|\|data-xwiki-image-style-alignment="center" height="393" width="556"]]
26.2	25
49.3	26	(% style="width:494px" %)
	27	\|Parameter\|(% style="width:178px" %)Value
	28	\|Overall dimensions (length × width × height), mm\|(% style="width:178px" %)120 × 120 × 32
	29	\|Mounting dimensions (length × width), mm\|(% style="width:178px" %)114 × 114
	30	\|Mounting holes\|(% style="width:178px" %)M3
26.2	31
49.1	32	== Connection procedure ==
26.2	33
20.3	34	The mounting area of the BMS Main 2.1 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.
1.2	35
20.3	36	1. Connect the charging and discharging contactors to the P6-P9 headers.
	37	1. Connect a current sensor to the P12 header according to its documentation. The positive current direction (indicated by an arrow on the sensor) corresponds to the battery charging. It is recommended to use a shielded cable to connect the current sensor, the shield should be grounded on the side of the current sensor. The cable should be positioned as far as possible from the high current circuits. If the current sensor has a reference voltage line, connect it to pin 4 of the P12 header.
	38	1. Connect the BMS Main 2.1 to the on-board CAN network. Observe the rules for connecting CAN devices. If the BMS Main 2.1 is the last device on a bus, close pins 1-2 on the P21 jumper, otherwise leave the jumper on pins 2-3.
	39	1. Connect a power supply to the P1 header. It is not recommended to power the BMS Main 2.1 from the battery only, since at a critical discharge of the battery, it is not possible to turn on the BMS and close the charging contactor.
	40
49.1	41	== Headers description ==
20.3	42
1.2	43	The BMS Main 2.1 headers are shown in figure below.
	44
44.1	45	[[image:1731516393377-928.jpeg\|\|alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
1.2	46
48.1	47	(% class="box warningmessage" %)
	48	(((
	49	Attention!
	50	All headers are shown from the device side!
	51	)))
20.3	52
49.1	53	=== P1 – header for power supply ===
2.2	54
55.1	55	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	56
47.1	57	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
2.2	58
46.1	59	\|Pin\|Name\|Description
	60	\|1\|GND\|Ground
	61	\|2\|V+\|Supply voltage 9-30V
4.2	62
49.1	63	=== P15 – header for BMS Logic ===
4.2	64
55.1	65	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	66
47.1	67	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
4.2	68
46.1	69	\|Pin\|Name\|Description
	70	\|1\|RS485_A\|RS-485 line A for communication with BMS Logic
	71	\|2\|RS485_B\|RS-485 line B for communication with BMS Logic
	72	\|3\|+5V\|Supply voltage for BMS Logic
	73	\|4\|GND\|Ground
44.1	74
49.1	75	=== P12 – header for current sensor ===
5.2	76
55.1	77	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	78
47.1	79	[[image:1732198890482-787.png\|\|data-xwiki-image-style-alignment="center" height="77" width="71"]]
5.3	80
46.1	81	\|Pin\|Name\|Description
	82	\|1\|+5V\|Supply voltage for the current sensor 5V, max 50 mA
	83	\|2\|GND\|Ground
	84	\|3\|Vcs\|ADC input (current sensor output)
	85	\|4\|Vref\|ADC input (current sensor reference signal)
5.3	86
49.1	87	=== P13 – header for humidity sensor ===
5.3	88
55.1	89	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	90
47.1	91	[[image:1732198896526-660.png\|\|data-xwiki-image-style-alignment="center" height="70" width="64"]]
6.2	92
46.1	93	\|Pin\|Name\|Description
	94	\|1\|+5V\|Supply voltage 5 V, max 50 mA
	95	\|2\|GND\|Ground
	96	\|3\|Vhs\|ADC input (humidity sensor output)
	97	\|4\|Vts\|ADC input (temperature sensor output)
6.2	98
49.1	99	=== P8 – header of relay 1 ===
6.2	100
55.1	101	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	102
47.1	103	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	104
	105	By default, relay 1 is used to control the discharging contactor.
	106
46.1	107	\|Pin\|Name\|Description
56.2	108	\|1\|V+\|Switching voltage (up to 55V, max 3A)
46.1	109	\|2\|NO\|Normally open contact
6.2	110
60.2	111	Contactor connection example for all relays:
58.2	112
60.2	113	[[image:1741619814065-850.png\|\|height="189" width="252"]]
59.2	114
49.1	115	=== P9 – header of relay 2 ===
11.2	116
55.1	117	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	118
47.1	119	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	120
	121	By default, relay 2 is used to output the “Allow charging” signal.
	122
46.1	123	\|Pin\|Name\|Description
56.2	124	\|1\|V+\|Switching voltage (up to 55V, max 3A)
46.1	125	\|2\|NO\|Normally open contact
6.2	126
61.1	127	Contactor connection example: see relay 1.
	128
49.1	129	=== P6 – header of relay 3 ===
6.2	130
55.1	131	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	132
47.1	133	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
6.2	134
11.2	135	By default, relay 3 is used to control the charging contactor.
6.2	136
46.1	137	\|Pin\|Name\|Description
56.2	138	\|1\|V+\|Switching voltage up to 55V,
	139	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	140	\|2\|NO\|Normally open contact
6.2	141
61.1	142	Contactor connection example: see relay 1.
	143
49.1	144	=== P7 – header of relay 4 ===
6.2	145
55.1	146	Receptacle Housing: Molex 39012020. Terminals: Molex 5556
	147
47.1	148	[[image:1732198827034-560.png\|\|data-xwiki-image-style-alignment="center" height="78" width="41"]]
11.2	149
	150	By default, relay 4 is used to control the heater.
	151
46.1	152	\|Pin\|Name\|Description
56.2	153	\|1\|V+\|Switching voltage up to 55V,
	154	up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
46.1	155	\|2\|NO\|Normally open contact
6.2	156
61.1	157	Contactor connection example: see relay 1.
	158
49.1	159	=== P14 – header for CAN and RS-485 interfaces ===
6.2	160
55.1	161	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	162
47.1	163	[[image:1731517180930-597.png\|\|data-xwiki-image-style-alignment="center" height="81" width="113"]]
6.2	164
21.3	165	(% style="width:641px" %)
46.1	166	\|Pin\|Name\|Description
	167	\|1\|EXT_RS485_A\|RS-485 line A for communication with external equipment
	168	\|2\|CAN_H\|CAN H line for communication with external equipment
	169	\|3\|+5V_CAN\|Supply voltage 5V for external devices, max 200 mA
	170	\|4\|EXT_RS485_B\|RS-485 line B for communication with external equipment
	171	\|5\|CAN_L\|CAN L line for communication with external equipment
	172	\|6\|GND_CAN\|Ground
11.2	173
49.1	174	=== P21 – CAN termination resistor jumper ===
11.2	175
47.1	176	[[image:1731517188900-976.png\|\|data-xwiki-image-style-alignment="center" height="78" width="149"]]
11.2	177
	178	To connect the termination resistor between the lines CAN_H and CAN_L, install a jumper, according to the P21 pinout:
	179
46.1	180	\|Pin\|Name\|Description
	181	\|1-2\|120 Ohm\|Termination resistor 120 Ohm is connected
	182	\|2-3\|-\|Termination resistor 120 Ohm is not connected
11.2	183
49.1	184	=== P22 - RS-485 termination resistor jumper ===
11.2	185
47.1	186	[[image:1731517195672-298.png\|\|data-xwiki-image-style-alignment="center" height="81" width="155"]]
11.2	187
	188	To connect the termination resistor between the EXT_RS485_A and EXT_RS485_B lines, install a jumper according to the P22 pinout:
	189
46.1	190	\|Pin\|Name\|Description
	191	\|1-2\|120 Ohm\|Terminating resistor 120 Ohm is connected
	192	\|2-3\|-\|Terminating resistor 120 Ohm is not connected
11.2	193
49.1	194	=== P11 – header for discrete inputs/outputs ===
11.2	195
55.1	196	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	197
47.1	198	[[image:1732198937514-731.png\|\|data-xwiki-image-style-alignment="center" height="85" width="272"]]
11.2	199
46.1	200	\|Pin\|Name\|Description
	201	\|16\|IN_1\|Discrete input #1 “dry contact” (+5V)
	202	\|8\|GND_1\|Discrete input #1 “dry contact” (ground)
	203	\|15\|IN_2\|Discrete input #2 “dry contact” (+5V)
	204	\|7\|GND_2\|Discrete input #2 “dry contact” (ground)
	205	\|14\|IN_3\|Discrete input #3 “dry contact” (+5V)
	206	\|6\|GND_3\|Discrete input #3 “dry contact” (ground)
	207	\|13\|IN_4\|Discrete input #4 “dry contact” (+5V)
	208	\|5\|GND_4\|Discrete input #4 “dry contact” (ground)
	209	\|12\|OUT_4\|Discrete output #4 (+5V, 20mA)
	210	\|4\|GND_OUT_4\|Discrete output #4 (ground)
	211	\|11\|OUT_3\|Discrete output #3 (+5V, 20mA)
	212	\|3\|GND_OUT_3\|Discrete output #3 (ground)
	213	\|10\|OUT_2\|Discrete output #2 (+5V, 20mA)
	214	\|2\|GND_OUT_2\|Discrete output #2 (ground)
	215	\|9\|OUT_1\|Discrete output #1 (+5V, 20mA)
	216	\|1\|GND_OUT_1\|Discrete output #1 (ground)
11.2	217
49.1	218	== Indicators ==
11.2	219
49.1	220	=== DS1 – power indicator ===
13.1	221
46.1	222	\|State\|Description
	223	\|Lights red\|The device is powered
	224	\|Off\|The device is not powered
11.2	225
49.1	226	=== DS2 – operation indicator ===
11.2	227
46.1	228	\|State\|Description
	229	\|Blinking green\|The BMS firmware is running
	230	\|Off\|The BMS firmware is not running
11.2	231
49.1	232	=== DS3 – communication indicator ===
11.2	233
46.1	234	\|State\|Description
	235	\|Blinking yellow (2Hz)\|Initializing communication with BMS Logic boards
	236	\|Blinking yellow (25Hz)\|Communication with BMS Logic is established
11.2	237
49.1	238	=== DS4 – error indicator ===
11.2	239
	240
46.1	241	\|(State\|Description
	242	\|(Blinking red\|Errors in communication with BMS Logic
	243
49.1	244	=== DS7 – relay 1 indicator ===
11.2	245
46.1	246	\|State\|Description
	247	\|Lights green\|Relay #1 is closed
	248	\|Off\|Relay #1 is opened
11.2	249
49.1	250	=== DS8 – relay 2 indicator ===
11.2	251
46.1	252	\|State\|Description
	253	\|Lights green\|Relay #2 is closed
	254	\|Off\|Relay #2 is opened
19.1	255
49.1	256	=== DS5 – relay 3 indicator ===
11.2	257
46.1	258	\|State\|Description
	259	\|Lights green\|Relay #3 is closed
	260	\|Off\|Relay #3 is opened
11.2	261
49.1	262	=== DS6 – relay 4 indicator ===
11.2	263
46.1	264	\|State\|Description
	265	\|Lights green\|Relay #4 is closed
	266	\|Off\|Relay #4 is opened
11.2	267
5.3	268

Wiki source code of 2. Installation and connection

Applications

Navigation

Table of Contents