Wiki source code of 2. Installation and connection

Version 9.1 by Admin on 2024/12/04 11:26

version	line-number	content
1.1	1	== 2.1 Installation procedure ==
	2
	3	The mounting area of the BMS Logic 18 must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Logic 18 is recommended to be placed close to the cells it controls, but away from high current circuits to reduce interference to measuring circuits and increase overall reliability of installation.
	4
	5	The installation site must provide convenient access for subsequent connection to the device’s headers.
	6
	7	The BMS Logic 18 has a heat sink to dissipate the heat generated during the balancing of the cells. When used in enclosed enclosures, heat must be removed from the sink, otherwise it may damage the device.
	8
	9	Overall and mounting dimensions of the BMS Logic 18 are shown below.
	10
	11	[[image:1733150108388-179.png\|\|data-xwiki-image-style-alignment="center" height="384" width="555"]]
	12
	13	\|Parameter\|Value
2.1	14	\|(((
1.1	15	Overall dimensions (length × width × height), mm
	16	)))\|214 × 140 × 16
	17	\|Mounting dimensions (length × width), mm\|198 × 132
	18	\|Mounting holes\|M4
	19	\|Headers X1-X5 type\|Molex series Micro-Fit
	20
	21	== (% style="color:#333333" %)2.2 (%%)Headers ==
	22
	23	The BMS Logic 18 is designed to measure temperature and voltage of 18 battery cells.
	24
	25	[[image:1733150257403-684.png\|\|data-xwiki-image-style-alignment="center" height="376" width="640"]]
	26
8.1	27	(% class="box warningmessage" %)
	28	(((
	29	Attention!
9.1	30	All headers are shown from the device side!
8.1	31	)))
	32
1.1	33	=== 2.2.1 X1 – header for cells ===
	34
2.1	35	[[image:1733150257406-647.jpeg\|\|data-xwiki-image-style-alignment="center" height="73" width="256"]]
1.1	36
	37	\|Pin\|Name\|Description
	38	\|1\|V-\|Minus of the cell stack
	39	\|2\|C2\|Cell #2
	40	\|3\|C4\|Cell #4
	41	\|4\|C6\|Cell #6
	42	\|5\|C8\|Cell #8
	43	\|6\|C10\|Cell #10
	44	\|7\|C12\|Cell #12
	45	\|8\|C14\|Cell #14
	46	\|9\|C16\|Cell #16
	47	\|10\|C18\|Cell #18 (maximum potential of the cell stack)
	48	\|11\|-\|-
	49	\|12\|C1\|Cell #1 (minimum potential with respect to V-)
	50	\|13\|C3\|Cell #3
	51	\|14\|C5\|Cell #5
	52	\|15\|C7\|Cell #7
	53	\|16\|C9\|Cell #9
	54	\|17\|C11\|Cell #11
	55	\|18\|C13\|Cell #13
	56	\|19\|C15\|Cell #15
	57	\|20\|C17\|Cell #17
	58
2.1	59	=== 2.2.2 X2 – header 1 for temperature sensors ===
1.1	60
2.1	61	[[image:1733150257408-172.jpeg\|\|data-xwiki-image-style-alignment="center" height="81" width="267"]]
1.1	62
	63	\|Pin\|Name\|Description
	64	\|1\|TEMPG9\|Ground of the thermistor #9
	65	\|2\|TEMPG8\|Ground of the thermistor #8
	66	\|3\|TEMPG7\|Ground of the thermistor #7
	67	\|4\|TEMPG6\|Ground of the thermistor #6
	68	\|5\|TEMPG5\|Ground of the thermistor #5
	69	\|6\|TEMPG4\|Ground of the thermistor #4
	70	\|7\|TEMPG3\|Ground of the thermistor #3
	71	\|8\|TEMPG2\|Ground of the thermistor #2
	72	\|9\|TEMPG1\|Ground of the thermistor #1
	73	\|10\|TEMP9\|Signal from the thermistor #9
	74	\|11\|TEMP8\|Signal from the thermistor #8
	75	\|12\|TEMP7\|Signal from the thermistor #7
	76	\|13\|TEMP6\|Signal from the thermistor #6
	77	\|14\|TEMP5\|Signal from the thermistor #5
	78	\|15\|TEMP4\|Signal from the thermistor #4
	79	\|16\|TEMP3\|Signal from the thermistor #3
	80	\|17\|TEMP2\|Signal from the thermistor #2
	81	\|18\|TEMP1\|Signal from the thermistor #1
	82
2.1	83	== 2.2.3 X3 – header 2 for temperature sensors ==
1.1	84
2.1	85	[[image:1733150257410-796.jpeg\|\|data-xwiki-image-style-alignment="center" height="81" width="268"]]
1.1	86
	87	\|Pin\|Name\|Description
	88	\|1\|TEMPG18\|Ground of the thermistor #18
	89	\|2\|TEMPG17\|Ground of the thermistor #17
	90	\|3\|TEMPG16\|Ground of the thermistor #16
	91	\|4\|TEMPG15\|Ground of the thermistor #15
	92	\|5\|TEMPG14\|Ground of the thermistor #14
	93	\|6\|TEMPG13\|Ground of the thermistor #13
	94	\|7\|TEMPG12\|Ground of the thermistor #12
	95	\|8\|TEMPG11\|Ground of the thermistor #11
	96	\|9\|TEMPG10\|Ground of the thermistor #10
	97	\|10\|TEMP18\|Signal from the thermistor #18
	98	\|11\|TEMP17\|Signal from the thermistor #17
	99	\|12\|TEMP16\|Signal from the thermistor #16
	100	\|13\|TEMP15\|Signal from the thermistor #15
	101	\|14\|TEMP14\|Signal from the thermistor #14
	102	\|15\|TEMP13\|Signal from the thermistor #13
	103	\|16\|TEMP12\|Signal from the thermistor #12
	104	\|17\|TEMP11\|Signal from the thermistor #11
	105	\|18\|TEMP10\|Signal from the thermistor #10
	106
2.1	107	=== 2.3.4 X4, X5 – headers for communication with BMS Main ===
1.1	108
2.1	109	[[image:1733150513230-598.png\|\|data-xwiki-image-style-alignment="center" height="89" width="81"]]
1.1	110
	111	\|Pin\|Name\|Description
	112	\|1\|RS485_A\|RS-485 line A for communication with the BMS Main
	113	\|2\|RS485_B\|RS-485 line B for communication with the BMS Main
	114	\|3\|+5V\|Supply voltage 5V
	115	\|4\|GND\|Ground
	116
2.1	117	== 2.4 Switches and Indicators ==
1.1	118
2.1	119	=== 2.4.1 SWD1 – address switch ===
1.1	120
	121	\|Switch number\|Description
	122	\|1\|The first (the lowest) bit of the address. Position ON - bit is 1
	123	\|2\|The second bit is the address. Position ON - bit is 1
	124	\|3\|The third bit of the address. Position ON - bit is 1
	125	\|4\|The fourth bit of the address. Position ON - bit is 1
	126	\|5\|The fifth (the highest) bit of the address. Position ON - bit is 1
	127
2.1	128	(% class="box infomessage" %)
	129	(((
4.1	130	Note: There is no SWD1 switch in the recent revisions of the BMS Logic 18. The device address must be configured in the settings (see the section [[3. Configuration>>doc:drafts.BMS Logic 18.3\. Configuration.WebHome]]).
2.1	131	)))
1.1	132
2.1	133	=== 2.4.2 SWD2 – RS-485 termination resistor switch ===
1.1	134
	135	To connect the termination resistor between the RS485_A and RS485_B lines, switch SWD2 to the ON position.
	136
2.1	137	(% class="box infomessage" %)
	138	(((
	139	Note: There is no SWD2 switch in the recent revisions of the BMS Logic 18. Connect a 120 Ohm termination resistor directly to the X5 connector between the lines RS485_A and RS485_B.
	140	)))
1.1	141
2.1	142	=== 2.4.3 DS1 – mode indicator ===
1.1	143
5.1	144	(% style="width:551px" %)
	145	\|(% style="width:188px" %)State\|(% style="width:362px" %)Description
	146	\|(% style="width:188px" %)Blinking\|(% style="width:362px" %)Connection between the BMS Main and the device is established
	147	\|(% style="width:188px" %)Short flashing (~~50 milliseconds in a second)\|(% style="width:362px" %)The device is measuring voltage and temperature. No communication between the BMS Main and the device
	148	\|(% style="width:188px" %)Long flashing (1 second in a 2 second period)\|(% style="width:362px" %)The device is in the bootloader mode
3.1	149
	150	== 2.5 Connection procedure ==
	151
	152	=== 2.5.1 Connection to BMS Main ===
	153
	154	To connect the BMS Main to BMS Logic 18 do the following steps:
	155
	156	1. Connect the BMS Main to the first BMS Logic 18 (P15 -> X4);
	157	1. Connect the BMS Logic 18 to each other (X5 -> X4);
	158	1. Switch SWD2 on the last BMS Logic 18 to the ON position or connect a 120 Ohm termination resistor directly to the X5 connector of the last BMS Logic 18.
	159
	160	(% class="box infomessage" %)
	161	(((
	162	Recommendations:
	163	~1. The total cable length (the sum of the lengths of all cables) between the BMS Main and the last BMS Logic 18 should not exceed 500 meters.
	164	2. Make all connections with the same cable.
	165	3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
	166	)))
	167
	168	=== 2.5.2 Connecting battery cells ===
	169
	170	To connect the battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Logic 18.
	171
	172	Begin the connection with the negative of the battery: the "V-" of the first BMS Logic 18 is connected to "B-", then the first cell (C1) of the battery is connected, then the second (C2), etc. The “V-“ of the next BMS Logic 18 is connected to the C18 of the previous BMS Logic 18. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the most potential.
	173
	174
	175	[[image:1733151263524-832.jpeg\|\|data-xwiki-image-style-alignment="center" height="492" width="612"]]
	176
	177	(% class="box warningmessage" %)
	178	(((
	179	Attention!
	180	Connect the battery according to the diagram, otherwise the device may be damaged!
	181	)))
	182
	183	=== 2.5.3 Connecting thermistors ===
	184
	185	Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink). For reliable operation, it is recommended to use all thermistors (a temperature sensor per cell).
6.1	186
	187	[[image:1733231170607-745.png\|\|data-xwiki-image-style-alignment="center" height="324" width="806"]]
7.1	188
	189

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