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Last modified by Admin on 2025/07/15 17:33
From version 55.1
edited by Admin
on 2025/02/20 12:59
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To version 20.1
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on 2024/11/13 17:27
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Title
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1 -2. Installation and connection
1 +2. Connection
Parent
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1 -Battery management systems.BMS Main 2\.1.WebHome
1 +Additional modules.BMS Main 2\.1.WebHome
Content
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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 =
1 += ​​​​Headers =
3 3  
4 -== Installation procedure ==
5 -
6 -Overall and mounting dimensions of the BMS Main 2.1 are shown below.
7 -
8 -[[image:1732198397369-222.png||data-xwiki-image-style-alignment="center" height="393" width="556"]]
9 -
10 -(% style="width:494px" %)
11 -|**Parameter**|(% style="width:178px" %)**Value**
12 -|Overall dimensions (length × width × height), mm|(% style="width:178px" %)120 × 120 × 32
13 -|Mounting dimensions (length × width), mm|(% style="width:178px" %)114 × 114
14 -|Mounting holes|(% style="width:178px" %)M3
15 -|Headers P1, P6-P9 type |(% style="width:178px" %)Molex series Mini-Fit
16 -|Headers P11-P15 type |(% style="width:178px" %)Molex series Micro-Fit
17 -
18 -== Connection procedure ==
19 -
20 -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.
21 -
22 -1. Connect the charging and discharging contactors to the P6-P9 headers.
23 -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.
24 -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.
25 -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.
26 -
27 -== ​​​​Headers description ==
28 -
29 29  The BMS Main 2.1 headers are shown in figure below.
30 30  
31 -[[image:1731516393377-928.jpeg||alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
5 +[[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
32 32  
33 -(% class="box warningmessage" %)
34 -(((
35 -**Attention!**
36 -All headers are shown from the device side!
37 -)))
38 -
39 39  === P1 – header for power supply ===
40 40  
41 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
9 +[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
42 42  
43 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
44 -
45 45  |**Pin**|**Name**|**Description**
46 46  |**1**|**GND**|Ground
47 47  |**2**|**V+**|Supply voltage 9-30V
... ... @@ -48,10 +48,8 @@
48 48  
49 49  === P15 – header for BMS Logic ===
50 50  
51 -Receptacle Housing: Molex 430250400. Terminals: Molex 43030
17 +[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
52 52  
53 -[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
54 -
55 55  |**Pin**|**Name**|**Description**
56 56  |**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
57 57  |**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
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60 60  
61 61  === P12 – header for current sensor ===
62 62  
63 -Receptacle Housing: Molex 430250400. Terminals: Molex 43030
27 +[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
64 64  
65 -[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
66 -
67 67  |**Pin**|**Name**|**Description**
68 68  |**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
69 69  |**2**|**GND**|Ground
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72 72  
73 73  === P13 – header for humidity sensor ===
74 74  
75 -Receptacle Housing: Molex 430250400. Terminals: Molex 43030
37 +[[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
76 76  
77 -[[image:1732198896526-660.png||data-xwiki-image-style-alignment="center" height="70" width="64"]]
78 -
79 79  |**Pin**|**Name**|**Description**
80 80  |**1**|**+5V**|Supply voltage 5 V, max 50 mA
81 81  |**2**|**GND**|Ground
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84 84  
85 85  === P8 – header of relay 1 ===
86 86  
87 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
47 +[[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
88 88  
89 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
90 -
91 91  By default, relay 1 is used to control the discharging contactor.
92 92  
93 93  |**Pin**|**Name**|**Description**
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96 96  
97 97  === P9 – header of relay 2 ===
98 98  
99 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
57 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
100 100  
101 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
102 -
103 103  By default, relay 2 is used to output the “Allow charging” signal.
104 104  
105 105  |**Pin**|**Name**|**Description**
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108 108  
109 109  === P6 – header of relay 3 ===
110 110  
111 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
67 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
112 112  
113 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
114 -
115 115  By default, relay 3 is used to control the charging contactor.
116 116  
117 117  |**Pin**|**Name**|**Description**
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120 120  
121 121  === P7 – header of relay 4 ===
122 122  
123 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
77 +[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
124 124  
125 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
126 -
127 127  By default, relay 4 is used to control the heater.
128 128  
129 -|**Pin**|**Name**|**Description**
130 -|**1**|**V+**|Switching voltage (up to 55V, max 8A)
131 -|**2**|**NO**|Normally open contact
81 +**Pin**|**Name**|**Description**
82 +**1**|**V+**|Switching voltage (up to 55V, max 8A)
83 +**2**|**NO**|Normally open contact
132 132  
133 133  === P14 – header for CAN and RS-485 interfaces ===
134 134  
135 -Receptacle Housing: Molex 430250600. Terminals: Molex 43030
87 +[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
136 136  
137 -[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center" height="81" width="113"]]
138 -
139 -(% style="width:641px" %)
140 140  |**Pin**|**Name**|**Description**
141 141  |**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
142 142  |**2**|**CAN_H**|CAN H line for communication with external equipment
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147 147  
148 148  === P21 – CAN termination resistor jumper ===
149 149  
150 -[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center" height="78" width="149"]]
99 +[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
151 151  
152 152  To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
153 153  
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157 157  
158 158  === P22 - RS-485 termination resistor jumper ===
159 159  
160 -[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center" height="81" width="155"]]
109 +[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
161 161  
162 162  To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
163 163  
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167 167  
168 168  === P11 – header for discrete inputs/outputs ===
169 169  
170 -Receptacle Housing: Molex 430251600. Terminals: Molex 43030
119 +[[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
171 171  
172 -[[image:1732198937514-731.png||data-xwiki-image-style-alignment="center" height="85" width="272"]]
173 -
174 174  |**Pin**|**Name**|**Description**
175 175  |**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
176 176  |**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
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189 189  |**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
190 190  |**1**|**GND_OUT_1**|Discrete output #1 (ground)
191 191  
192 -== Indicators ==
139 += Indicators =
193 193  
194 194  === DS1 – power indicator ===
195 195  
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211 211  
212 212  === DS4 – error indicator ===
213 213  
161 +|**State**|**Description**
162 +|**Blinking red**|Errors in communication with BMS Logic
214 214  
215 -|(**State**|**Description**
216 -|(**Blinking red**|Errors in communication with BMS Logic
217 -
218 218  === DS7 – relay 1 indicator ===
219 219  
220 220  |**State**|**Description**
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223 223  
224 224  === DS8 – relay 2 indicator ===
225 225  
172 +
226 226  |**State**|**Description**
227 227  |**Lights green**|Relay #2 is closed
228 228  |**Off**|Relay #2 is opened
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