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Last modified by Admin on 2025/03/18 13:04
From version 2.1
edited by Admin
on 2024/12/02 14:50
Change comment: There is no comment for this version
To version 3.1
edited by Admin
on 2024/12/02 14:57
Change comment: There is no comment for this version

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139 139  |**Blinking**|Connection between the BMS Main and the device is established
140 140  |**Short flashing (~~50 milliseconds in a second)**|The device is measuring voltage and temperature. No communication between the BMS Main and the device
141 141  |**Long flashing (1 second in a 2 second period)**|The device is in the bootloader mode
142 +
143 +== 2.5 Connection procedure ==
144 +
145 +=== 2.5.1 Connection to BMS Main ===
146 +
147 +To connect the BMS Main to BMS Logic 18 do the following steps:
148 +
149 +1. Connect the BMS Main to the first BMS Logic 18 (P15 -> X4);
150 +1. Connect the BMS Logic 18 to each other (X5 -> X4);
151 +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.
152 +
153 +(% class="box infomessage" %)
154 +(((
155 +**Recommendations:**
156 +~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.
157 +2. Make all connections with the same cable.
158 +3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
159 +)))
160 +
161 +=== 2.5.2 Connecting battery cells ===
162 +
163 +To connect the battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Logic 18.
164 +
165 +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.
166 +
167 +
168 +[[image:1733151263524-832.jpeg||data-xwiki-image-style-alignment="center" height="492" width="612"]]
169 +
170 +(% class="box warningmessage" %)
171 +(((
172 +**Attention!**
173 +Connect the battery according to the diagram, otherwise the device may be damaged!
174 +)))
175 +
176 +=== 2.5.3 Connecting thermistors ===
177 +
178 +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).
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