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Last modified by Admin on 2025/07/15 17:33
From version 12.2
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Title
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1 -2. Connection
1 +2. Connection procedure
Parent
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1 -Additional modules.BMS Main 2\.1.WebHome
1 +Controllers.BMS Main 2\.1.WebHome
Content
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1 -= ​​​​Headers =
1 +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.
2 2  
3 +1. Connect the charging and discharging contactors to the P6-P9 headers.
4 +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.
5 +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.
6 +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.
7 +
8 += ​​​​Headers description =
9 +
3 3  The BMS Main 2.1 headers are shown in figure below.
4 4  
5 -[[The BMS Main 2.1 headers>>image:1731516393377-928.jpeg||height="430" width="428"]]
12 +[[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
6 6  
7 -== P1 – header for power supply ==
14 +(% class="wikigeneratedid" %)
15 +Following chapters describes the BMS Main 2.1 headers pinout.
8 8  
17 +=== P1 – header for power supply ===
18 +
9 9  [[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
10 10  
11 -|**Pin**|**Name**|**Description**
12 -|**1**|**GND**|Ground
13 -|**2**|**V+**|Supply voltage 9-30V
21 +(% style="width:339px" %)
22 +|(% style="width:71px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:174px" %)**Description**
23 +|(% style="width:71px" %)**1**|(% style="width:91px" %)**GND**|(% style="width:174px" %)Ground
24 +|(% style="width:71px" %)**2**|(% style="width:91px" %)**V+**|(% style="width:174px" %)Supply voltage 9-30V
14 14  
15 -== P15 – header for BMS Logic ==
26 +=== P15 – header for BMS Logic ===
16 16  
17 17  [[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
18 18  
19 -|**Pin**|**Name**|**Description**
20 -|**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
21 -|**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
22 -|**3**|**+5V**|Supply voltage for BMS Logic
23 -|**4**|**GND**|Ground
30 +(% style="width:524px" %)
31 +|(% style="width:69px" %)**Pin**|(% style="width:97px" %)**Name**|(% style="width:355px" %)**Description**
32 +|(% style="width:69px" %)**1**|(% style="width:97px" %)**RS485_A**|(% style="width:355px" %)RS-485 line A for communication with BMS Logic
33 +|(% style="width:69px" %)**2**|(% style="width:97px" %)**RS485_B**|(% style="width:355px" %)RS-485 line B for communication with BMS Logic
34 +|(% style="width:69px" %)**3**|(% style="width:97px" %)**+5V**|(% style="width:355px" %)Supply voltage for BMS Logic
35 +|(% style="width:69px" %)**4**|(% style="width:97px" %)**GND**|(% style="width:355px" %)Ground
24 24  
25 -== P12 – header for current sensor ==
37 +=== P12 – header for current sensor ===
26 26  
27 27  [[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
28 28  
29 -|**Pin**|**Name**|**Description**
30 -|**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
31 -|**2**|**GND**|Ground
32 -|**3**|**Vcs**|ADC input (current sensor output)
33 -|**4**|**Vref**|ADC input (current sensor reference signal)
41 +(% style="width:531px" %)
42 +|(% style="width:75px" %)**Pin**|(% style="width:93px" %)**Name**|(% style="width:360px" %)**Description**
43 +|(% style="width:75px" %)**1**|(% style="width:93px" %)**+5V**|(% style="width:360px" %)Supply voltage for the current sensor 5V, max 50 mA
44 +|(% style="width:75px" %)**2**|(% style="width:93px" %)**GND**|(% style="width:360px" %)Ground
45 +|(% style="width:75px" %)**3**|(% style="width:93px" %)**Vcs**|(% style="width:360px" %)ADC input (current sensor output)
46 +|(% style="width:75px" %)**4**|(% style="width:93px" %)**Vref**|(% style="width:360px" %)ADC input (current sensor reference signal)
34 34  
35 -== P13 – header for humidity sensor ==
48 +=== P13 – header for humidity sensor ===
36 36  
37 37  [[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
38 38  
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42 42  |**3**|**Vhs**|ADC input (humidity sensor output)
43 43  |**4**|**Vts**|ADC input (temperature sensor output)
44 44  
45 -== P8 – header of relay 1 ==
58 +=== P8 – header of relay 1 ===
46 46  
47 47  [[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
48 48  
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52 52  |**1**|**V+**|Switching voltage (up to 55V, max 2A)
53 53  |**2**|**NO**|Normally open contact
54 54  
55 -== P9 – header of relay 2 ==
68 +=== P9 – header of relay 2 ===
56 56  
57 57  [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
58 58  
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62 62  |**1**|**V+**|Switching voltage (up to 55V, max 2A)
63 63  |**2**|**NO**|Normally open contact
64 64  
65 -== P6 – header of relay 3 ==
78 +=== P6 – header of relay 3 ===
66 66  
67 67  [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
68 68  
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72 72  |**1**|**V+**|Switching voltage (up to 55V, max 8A)
73 73  |**2**|**NO**|Normally open contact
74 74  
75 -== P7 – header of relay 4 ==
88 +=== P7 – header of relay 4 ===
76 76  
77 77  [[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
78 78  
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82 82  |**1**|**V+**|Switching voltage (up to 55V, max 8A)
83 83  |**2**|**NO**|Normally open contact
84 84  
85 -== P14 – header for CAN and RS-485 interfaces ==
98 +=== P14 – header for CAN and RS-485 interfaces ===
86 86  
87 87  [[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
88 88  
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94 94  |**5**|**CAN_L**|CAN L line for communication with external equipment
95 95  |**6**|**GND_CAN**|Ground
96 96  
97 -== P21 – CAN termination resistor jumper ==
110 +=== P21 – CAN termination resistor jumper ===
98 98  
99 99  [[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
100 100  
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104 104  |**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
105 105  |**2-3**|**-**|Termination resistor 120 Ohm is not connected
106 106  
107 -== P22 - RS-485 termination resistor jumper ==
120 +=== P22 - RS-485 termination resistor jumper ===
108 108  
109 109  [[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
110 110  
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114 114  |**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
115 115  |**2-3**|**-**|Terminating resistor 120 Ohm is not connected
116 116  
117 -== P11 – header for discrete inputs/outputs ==
130 +=== P11 – header for discrete inputs/outputs ===
118 118  
119 119  [[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
120 120  
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136 136  |**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
137 137  |**1**|**GND_OUT_1**|Discrete output #1 (ground)
138 138  
139 -== DS1 – power indicator ==
152 += Indicators =
140 140  
154 +=== DS1 – power indicator ===
155 +
141 141  |**State**|**Description**
142 142  |**Lights red**|The device is powered
143 143  |**Off**|The device is not powered
144 144  
145 -== DS2 – operation indicator ==
160 +=== DS2 – operation indicator ===
146 146  
147 147  |**State**|**Description**
148 148  |**Blinking green**|The BMS firmware is running
149 149  |**Off**|The BMS firmware is not running
150 150  
151 -== DS3 – communication indicator ==
166 +=== DS3 – communication indicator ===
152 152  
153 153  |**State**|**Description**
154 154  |**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
155 155  |**Blinking yellow (25Hz)**|Communication with BMS Logic is established
156 156  
157 -== DS4 – error indicator ==
172 +=== DS4 – error indicator ===
158 158  
159 159  |**State**|**Description**
160 160  |**Blinking red**|Errors in communication with BMS Logic
161 161  
162 -== DS7 – relay 1 indicator ==
177 +=== DS7 – relay 1 indicator ===
163 163  
164 164  |**State**|**Description**
165 165  |**Lights green**|Relay #1 is closed
166 166  |**Off**|Relay #1 is opened
167 167  
168 -== DS8 – relay 2 indicator ==
183 +=== DS8 – relay 2 indicator ===
169 169  
185 +
170 170  |**State**|**Description**
171 171  |**Lights green**|Relay #2 is closed
172 172  |**Off**|Relay #2 is opened
173 173  
174 -== DS5 – relay 3 indicator ==
190 +=== DS5 – relay 3 indicator ===
175 175  
176 176  |**State**|**Description**
177 177  |**Lights green**|Relay #3 is closed
178 178  |**Off**|Relay #3 is opened
179 179  
180 -== DS6 – relay 4 indicator ==
196 +=== DS6 – relay 4 indicator ===
181 181  
182 182  |**State**|**Description**
183 183  |**Lights green**|Relay #4 is closed
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