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From version 67.1
edited by Admin
on 2025/07/15 17:30
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To version 11.1
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on 2024/11/13 16:59
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Title
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1 -2. Installation and connection
1 +2. Connection
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1 -Battery management systems.BMS Main 2\.1.WebHome
1 +Additional modules.BMS Main 2\.1.WebHome
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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 -== Safety rules ==
5 -
6 -To perform the protection functions, the BMS must be able to disconnect the battery from the load and charger. To do this, **at least one contactor** able to break the load and charge circuits must be connected to the BMS.
7 -
8 -Before use, **configure the system**. Proper operation of the BMS is possible only if it is correctly configured.
9 -
10 -(% class="box errormessage" %)
11 -(((
12 -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.
13 -)))
14 -
15 -(% class="box errormessage" %)
16 -(((
17 -The system is not designed to operate with batteries whose total voltage exceeds 1200 V.
18 -)))
19 -
20 -== Installation procedure ==
21 -
22 -Overall and mounting dimensions of the BMS Main 2.1 are shown below.
23 -
24 -
25 -(% style="width:494px" %)
26 -|**Parameter**|(% style="width:178px" %)**Value**
27 -|Overall dimensions (length × width × height), mm|(% style="width:178px" %)120 × 120 × 17
28 -|Mounting dimensions (length × width), mm|(% style="width:178px" %)114 × 114
29 -|Mounting holes|(% style="width:178px" %)M3
30 -
31 -== Connection procedure ==
32 -
33 -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.
34 -
35 -1. Connect the charging and discharging contactors to the P6-P9 headers.
36 -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.
37 -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.
38 -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.
39 -
40 -== ​​​​Headers description ==
41 -
42 42  The BMS Main 2.1 headers are shown in figure below.
43 43  
44 -[[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:1731516393377-928.jpeg||height="430" width="428"]]
45 45  
46 -(% class="box warningmessage" %)
47 -(((
48 -**Attention!**
49 -All headers are shown from the device side!
50 -)))
7 +== P1 – header for power supply ==
51 51  
52 -=== P1 – header for power supply ===
9 +[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center" height="93" width="49"]]
53 53  
54 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
55 -
56 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
57 -
58 58  |**Pin**|**Name**|**Description**
59 59  |**1**|**GND**|Ground
60 60  |**2**|**V+**|Supply voltage 9-30V
61 61  
62 -=== P15 – header for BMS Logic ===
15 +== P15 – header for BMS Logic ==
63 63  
64 -Receptacle Housing: Molex 430250400. Terminals: Molex 43030
17 +[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center" height="90" width="83"]]
65 65  
66 -[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
67 -
68 68  |**Pin**|**Name**|**Description**
69 69  |**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
70 70  |**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
... ... @@ -71,12 +71,10 @@
71 71  |**3**|**+5V**|Supply voltage for BMS Logic
72 72  |**4**|**GND**|Ground
73 73  
74 -=== P12 – header for current sensor ===
25 +== P12 – header for current sensor ==
75 75  
76 -Receptacle Housing: Molex 430250400. Terminals: Molex 43030
27 +[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center" height="98" width="90"]]
77 77  
78 -[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
79 -
80 80  |**Pin**|**Name**|**Description**
81 81  |**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
82 82  |**2**|**GND**|Ground
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83 83  |**3**|**Vcs**|ADC input (current sensor output)
84 84  |**4**|**Vref**|ADC input (current sensor reference signal)
85 85  
86 -=== P13 – header for humidity sensor ===
35 +== P13 – header for humidity sensor ==
87 87  
88 -Receptacle Housing: Molex 430250400. Terminals: Molex 43030
37 +[[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
89 89  
90 -[[image:1732198896526-660.png||data-xwiki-image-style-alignment="center" height="70" width="64"]]
91 -
92 92  |**Pin**|**Name**|**Description**
93 93  |**1**|**+5V**|Supply voltage 5 V, max 50 mA
94 94  |**2**|**GND**|Ground
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95 95  |**3**|**Vhs**|ADC input (humidity sensor output)
96 96  |**4**|**Vts**|ADC input (temperature sensor output)
97 97  
98 -=== P8 – header of relay 1 ===
99 99  
100 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
46 +1.
47 +11.
48 +111. P8 – header of relay 1
101 101  
102 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
50 +[[image:file:///C:/Users/INASIB~~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.emz]]
103 103  
104 104  By default, relay 1 is used to control the discharging contactor.
105 105  
54 +
106 106  |**Pin**|**Name**|**Description**
107 -|**1**|**V+**|Switching voltage (up to 55V, max 3A)
56 +|**1**|**V+**|Switching voltage (up to 55V, max 2A)
108 108  |**2**|**NO**|Normally open contact
109 109  
110 -Contactor connection example for all relays:
111 111  
112 -[[image:1741619814065-850.png||height="189" width="252"]]
60 +1.
61 +11.
62 +111. P9 – header of relay 2
113 113  
114 -=== P9 – header of relay 2 ===
64 +[[image:file:///C:/Users/INASIB~~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.emz]]
115 115  
116 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
117 -
118 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
119 -
120 120  By default, relay 2 is used to output the “Allow charging” signal.
121 121  
122 -|**Pin**|**Name**|**Description**
123 -|**1**|**V+**|Switching voltage (up to 55V, max 3A)
124 -|**2**|**NO**|Normally open contact
125 125  
126 -Contactor connection example: see relay 1.
127 -
128 -=== P6 – header of relay 3 ===
129 -
130 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
131 -
132 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
133 -
134 -By default, relay 3 is used to control the charging contactor.
135 -
136 136  |**Pin**|**Name**|**Description**
137 -|**1**|**V+**|Switching voltage up to 55V,
138 -up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
70 +|**1**|**V+**|Switching voltage (up to 55V, max 2A)
139 139  |**2**|**NO**|Normally open contact
140 140  
141 -Contactor connection example: see relay 1.
142 142  
143 -=== P7 – header of relay 4 ===
144 144  
145 -Receptacle Housing: Molex 39012020. Terminals: Molex 5556
146 -
147 -[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
148 -
149 -By default, relay 4 is used to control the heater.
150 -
151 -|**Pin**|**Name**|**Description**
152 -|**1**|**V+**|Switching voltage up to 55V,
153 -up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
154 -|**2**|**NO**|Normally open contact
155 -
156 -Contactor connection example: see relay 1.
157 -
158 -=== P14 – header for CAN and RS-485 interfaces ===
159 -
160 -Receptacle Housing: Molex 430250600. Terminals: Molex 43030
161 -
162 -[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center" height="81" width="113"]]
163 -
164 -(% style="width:641px" %)
165 -|**Pin**|**Name**|**Description**
166 -|**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
167 -|**2**|**CAN_H**|CAN H line for communication with external equipment
168 -|**3**|**+5V_CAN**|Supply voltage 5V for external devices, max 200 mA
169 -|**4**|**EXT_RS485_B**|RS-485 line B for communication with external equipment
170 -|**5**|**CAN_L**|CAN L line for communication with external equipment
171 -|**6**|**GND_CAN**|Ground
172 -
173 -=== P21 – CAN termination resistor jumper ===
174 -
175 -[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center" height="78" width="149"]]
176 -
177 -To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
178 -
179 -|**Pin**|**Name**|**Description**
180 -|**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
181 -|**2-3**|**-**|Termination resistor 120 Ohm is not connected
182 -
183 -=== P22 - RS-485 termination resistor jumper ===
184 -
185 -[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center" height="81" width="155"]]
186 -
187 -To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
188 -
189 -|**Pin**|**Name**|**Description**
190 -|**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
191 -|**2-3**|**-**|Terminating resistor 120 Ohm is not connected
192 -
193 -=== P11 – header for discrete inputs/outputs ===
194 -
195 -Receptacle Housing: Molex 430251600. Terminals: Molex 43030
196 -
197 -[[image:1732198937514-731.png||data-xwiki-image-style-alignment="center" height="85" width="272"]]
198 -
199 -|**Pin**|**Name**|**Description**
200 -|**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
201 -|**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
202 -|**15**|**IN_2**|Discrete input #2 “dry contact” (+5V)
203 -|**7**|**GND_2**|Discrete input #2 “dry contact” (ground)
204 -|**14**|**IN_3**|Discrete input #3 “dry contact” (+5V)
205 -|**6**|**GND_3**|Discrete input #3 “dry contact” (ground)
206 -|**13**|**IN_4**|Discrete input #4 “dry contact” (+5V)
207 -|**5**|**GND_4**|Discrete input #4 “dry contact” (ground)
208 -|**12**|**OUT_4**|Discrete output #4 (+5V, 20mA)
209 -|**4**|**GND_OUT_4**|Discrete output #4 (ground)
210 -|**11**|**OUT_3**|Discrete output #3 (+5V, 20mA)
211 -|**3**|**GND_OUT_3**|Discrete output #3 (ground)
212 -|**10**|**OUT_2**|Discrete output #2 (+5V, 20mA)
213 -|**2**|**GND_OUT_2**|Discrete output #2 (ground)
214 -|**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
215 -|**1**|**GND_OUT_1**|Discrete output #1 (ground)
216 -
217 -== Indicators ==
218 -
219 -=== DS1 – power indicator ===
220 -
221 -|**State**|**Description**
222 -|**Lights red**|The device is powered
223 -|**Off**|The device is not powered
224 -
225 -=== DS2 – operation indicator ===
226 -
227 -|**State**|**Description**
228 -|**Blinking green**|The BMS firmware is running
229 -|**Off**|The BMS firmware is not running
230 -
231 -=== DS3 – communication indicator ===
232 -
233 -|**State**|**Description**
234 -|**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
235 -|**Blinking yellow (25Hz)**|Communication with BMS Logic is established
236 -
237 -=== DS4 – error indicator ===
238 -
239 -
240 -|(**State**|**Description**
241 -|(**Blinking red**|Errors in communication with BMS Logic
242 -
243 -=== DS7 – relay 1 indicator ===
244 -
245 -|**State**|**Description**
246 -|**Lights green**|Relay #1 is closed
247 -|**Off**|Relay #1 is opened
248 -
249 -=== DS8 – relay 2 indicator ===
250 -
251 -|**State**|**Description**
252 -|**Lights green**|Relay #2 is closed
253 -|**Off**|Relay #2 is opened
254 -
255 -=== DS5 – relay 3 indicator ===
256 -
257 -|**State**|**Description**
258 -|**Lights green**|Relay #3 is closed
259 -|**Off**|Relay #3 is opened
260 -
261 -=== DS6 – relay 4 indicator ===
262 -
263 -|**State**|**Description**
264 -|**Lights green**|Relay #4 is closed
265 -|**Off**|Relay #4 is opened
266 -
267 267  
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