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Wiki source code of 2. Installation and connection

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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 =
3
4 == ​​​​​Safety rules ==
5
6 Before use, **configure the system**. Proper operation of the BMS is possible only if it is correctly configured.
7
8 It is not recommended to use the system in batteries formed by several series of cells connected in parallel. To increase capacity, it is recommended to connect several cells in parallel groups, and then connect the groups in series.
9
10 (% class="box warningmessage" %)
11 (((
12 Communication cable between BMS Main and BMS Logic devices must be deattached during connection of battery cells to BMS Logic. Connecting the battery cells while BMS Logic attached the the BMS Main may cause device damage!
13 )))
14
15 (% class="box errormessage" %)
16 (((
17 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.
18 )))
19
20 == Installation procedure ==
21
22 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.
23
24 The installation site must provide convenient access for subsequent connection to the device’s headers.
25
26 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.
27
28 Overall and mounting dimensions of the BMS Logic 18 are shown below.
29
30 [[image:1736771889450-259.png||data-xwiki-image-style-alignment="center" height="405" width="600"]]
31
32 |**Parameter**|**Value**
33 |(((
34 Overall dimensions (length × width × height), mm
35 )))|214 × 140 × 16
36 |Mounting dimensions (length × width), mm|198 × 132
37 |Mounting holes|M4
38
39 == Headers ==
40
41 The BMS Logic 18 is designed to measure temperature and voltage of 18 battery cells.
42
43 [[image:1736770801015-488.png||data-xwiki-image-style-alignment="center" height="350" width="600"]]
44
45 (% class="box warningmessage" %)
46 (((
47 **Attention!**
48 All headers are shown from the device side!
49 )))
50
51 === X1 – header for cells ===
52
53 Receptacle Housing: Molex 430252000. Terminals: Molex 43030
54
55 [[image:1733150257406-647.jpeg||data-xwiki-image-style-alignment="center" height="73" width="256"]]
56
57 |**Pin**|**Name**|**Description**
58 |**1**|**V-**|Minus of the cell stack
59 |**2**|**C2**|Cell #2
60 |**3**|**C4**|Cell #4
61 |**4**|**C6**|Cell #6
62 |**5**|**C8**|Cell #8
63 |**6**|**C10**|Cell #10
64 |**7**|**C12**|Cell #12
65 |**8**|**C14**|Cell #14
66 |**9**|**C16**|Cell #16
67 |**10**|**C18**|Cell #18 (maximum potential of the cell stack)
68 |**11**|-|-
69 |**12**|**C1**|Cell #1 (minimum potential with respect to V-)
70 |**13**|**C3**|Cell #3
71 |**14**|**C5**|Cell #5
72 |**15**|**C7**|Cell #7
73 |**16**|**C9**|Cell #9
74 |**17**|**C11**|Cell #11
75 |**18**|**C13**|Cell #13
76 |**19**|**C15**|Cell #15
77 |**20**|**C17**|Cell #17
78
79 === X2 – header 1 for temperature sensors ===
80
81 Receptacle Housing: Molex 430251800. Terminals: Molex 43030
82
83 [[image:1733150257408-172.jpeg||data-xwiki-image-style-alignment="center" height="81" width="267"]]
84
85 |**Pin**|**Name**|**Description**
86 |**1**|**TEMPG9**|Ground of the thermistor #9
87 |**2**|**TEMPG8**|Ground of the thermistor #8
88 |**3**|**TEMPG7**|Ground of the thermistor #7
89 |**4**|**TEMPG6**|Ground of the thermistor #6
90 |**5**|**TEMPG5**|Ground of the thermistor #5
91 |**6**|**TEMPG4**|Ground of the thermistor #4
92 |**7**|**TEMPG3**|Ground of the thermistor #3
93 |**8**|**TEMPG2**|Ground of the thermistor #2
94 |**9**|**TEMPG1**|Ground of the thermistor #1
95 |**10**|**TEMP9**|Signal from the thermistor #9
96 |**11**|**TEMP8**|Signal from the thermistor #8
97 |**12**|**TEMP7**|Signal from the thermistor #7
98 |**13**|**TEMP6**|Signal from the thermistor #6
99 |**14**|**TEMP5**|Signal from the thermistor #5
100 |**15**|**TEMP4**|Signal from the thermistor #4
101 |**16**|**TEMP3**|Signal from the thermistor #3
102 |**17**|**TEMP2**|Signal from the thermistor #2
103 |**18**|**TEMP1**|Signal from the thermistor #1
104
105 === X3 – header 2 for temperature sensors ===
106
107 Receptacle Housing: Molex 430251800. Terminals: Molex 43030
108
109 [[image:1733150257410-796.jpeg||data-xwiki-image-style-alignment="center" height="81" width="268"]]
110
111 |**Pin**|**Name**|**Description**
112 |**1**|**TEMPG18**|Ground of the thermistor #18
113 |**2**|**TEMPG17**|Ground of the thermistor #17
114 |**3**|**TEMPG16**|Ground of the thermistor #16
115 |**4**|**TEMPG15**|Ground of the thermistor #15
116 |**5**|**TEMPG14**|Ground of the thermistor #14
117 |**6**|**TEMPG13**|Ground of the thermistor #13
118 |**7**|**TEMPG12**|Ground of the thermistor #12
119 |**8**|**TEMPG11**|Ground of the thermistor #11
120 |**9**|**TEMPG10**|Ground of the thermistor #10
121 |**10**|**TEMP18**|Signal from the thermistor #18
122 |**11**|**TEMP17**|Signal from the thermistor #17
123 |**12**|**TEMP16**|Signal from the thermistor #16
124 |**13**|**TEMP15**|Signal from the thermistor #15
125 |**14**|**TEMP14**|Signal from the thermistor #14
126 |**15**|**TEMP13**|Signal from the thermistor #13
127 |**16**|**TEMP12**|Signal from the thermistor #12
128 |**17**|**TEMP11**|Signal from the thermistor #11
129 |**18**|**TEMP10**|Signal from the thermistor #10
130
131 === X4, X5 – headers for communication with BMS Main ===
132
133 Receptacle Housing: Molex 430250400. Terminals: Molex 43030
134
135 [[image:1733150513230-598.png||data-xwiki-image-style-alignment="center" height="89" width="81"]]
136
137 |**Pin**|**Name**|**Description**
138 |**1**|**RS485_A**|RS-485 line A for communication with the BMS Main
139 |**2**|**RS485_B**|RS-485 line B for communication with the BMS Main
140 |**3**|**+5V**|Supply voltage 5V
141 |**4**|**GND**|Ground
142
143 == Switches and Indicators ==
144
145 === SWD1 – address switch ===
146
147 |**Switch number**|**Description**
148 |**1**|The first (the lowest) bit of the address. Position ON - bit is 1
149 |**2**|The second bit is the address. Position ON - bit is 1
150 |**3**|The third bit of the address. Position ON - bit is 1
151 |**4**|The fourth bit of the address. Position ON - bit is 1
152 |**5**|The fifth (the highest) bit of the address. Position ON - bit is 1
153
154 (% class="box infomessage" %)
155 (((
156 **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:Battery management systems.BMS Logic 18.3\. Configuration.WebHome]]).
157 )))
158
159 === SWD2 – RS-485 termination resistor switch ===
160
161 To connect the termination resistor between the **RS485_A** and **RS485_B** lines, switch SWD2 to the ON position.
162
163 (% class="box infomessage" %)
164 (((
165 **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.
166 )))
167
168 === DS1 – mode indicator ===
169
170 (% style="width:551px" %)
171 |(% style="width:188px" %)**State**|(% style="width:362px" %)**Description**
172 |(% style="width:188px" %)**Blinking**|(% style="width:362px" %)Connection between the BMS Main and the device is established
173 |(% 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
174 |(% style="width:188px" %)**Long flashing (1 second in a 2 second period)**|(% style="width:362px" %)The device is in the bootloader mode
175
176 == Connection procedure ==
177
178 === Connection to BMS Main ===
179
180 To connect the BMS Main to BMS Logic 18 do the following steps:
181
182 1. Connect the BMS Main to the first BMS Logic 18 (P15 -> X4);
183 1. Connect the BMS Logic 18 to each other (X5 -> X4);
184 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.
185
186 (% class="box infomessage" %)
187 (((
188 **Recommendations:**
189 ~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.
190 2. Make all connections with the same cable.
191 3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
192 )))
193
194 === Connecting battery cells ===
195
196 To connect the battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Logic 18.
197
198 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.
199
200
201 [[image:1733151263524-832.jpeg||data-xwiki-image-style-alignment="center" height="492" width="612"]]
202
203 (% class="box warningmessage" %)
204 (((
205 **Attention!**
206 Connect the battery according to the diagram, otherwise the device may be damaged!
207 )))
208
209 === Connecting thermistors ===
210
211 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).
212
213 [[image:1733231170607-745.png||data-xwiki-image-style-alignment="center" height="324" width="806"]]
214
215