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Last modified by Admin on 2025/07/15 17:33
From version 12.2
edited by Admin
on 2024/11/13 17:03
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To version 69.1
edited by Admin
on 2025/07/15 17:31
Change comment: There is no comment for this version

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Title
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1 -2. Connection
1 +2. Installation and connection
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1 -Additional modules.BMS Main 2\.1.WebHome
1 +Battery management systems.BMS Main 2\.1.WebHome
Content
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1 -= ​​​​Headers =
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 =
2 2  
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 +[[image:1752600650898-961.png||data-xwiki-image-style-alignment="center" height="546" width="450"]]
25 +
26 +(% style="width:494px" %)
27 +|**Parameter**|(% style="width:178px" %)**Value**
28 +|Overall dimensions (length × width × height), mm|(% style="width:178px" %)120 × 120 × 17
29 +|Mounting dimensions (length × width), mm|(% style="width:178px" %)114 × 114
30 +|Mounting holes|(% style="width:178px" %)M3
31 +
32 +== Connection procedure ==
33 +
34 +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.
35 +
36 +1. Connect the charging and discharging contactors to the P6-P9 headers.
37 +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.
38 +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.
39 +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.
40 +
41 +== ​​​​Headers description ==
42 +
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"]]
45 +[[image:1731516393377-928.jpeg||alt="1731517946345-632.png" data-xwiki-image-style-alignment="center" height="417" width="451"]]
6 6  
7 -== P1 – header for power supply ==
47 +(% class="box warningmessage" %)
48 +(((
49 +**Attention!**
50 +All headers are shown from the device side!
51 +)))
8 8  
9 -[[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
53 +=== P1 – header for power supply ===
10 10  
55 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
56 +
57 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
58 +
11 11  |**Pin**|**Name**|**Description**
12 12  |**1**|**GND**|Ground
13 13  |**2**|**V+**|Supply voltage 9-30V
14 14  
15 -== P15 – header for BMS Logic ==
63 +=== P15 – header for BMS Logic ===
16 16  
17 -[[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
65 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
18 18  
67 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
68 +
19 19  |**Pin**|**Name**|**Description**
20 20  |**1**|**RS485_A**|RS-485 line A for communication with BMS Logic
21 21  |**2**|**RS485_B**|RS-485 line B for communication with BMS Logic
... ... @@ -22,10 +22,12 @@
22 22  |**3**|**+5V**|Supply voltage for BMS Logic
23 23  |**4**|**GND**|Ground
24 24  
25 -== P12 – header for current sensor ==
75 +=== P12 – header for current sensor ===
26 26  
27 -[[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
77 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
28 28  
79 +[[image:1732198890482-787.png||data-xwiki-image-style-alignment="center" height="77" width="71"]]
80 +
29 29  |**Pin**|**Name**|**Description**
30 30  |**1**|**+5V**|Supply voltage for the current sensor 5V, max 50 mA
31 31  |**2**|**GND**|Ground
... ... @@ -32,10 +32,12 @@
32 32  |**3**|**Vcs**|ADC input (current sensor output)
33 33  |**4**|**Vref**|ADC input (current sensor reference signal)
34 34  
35 -== P13 – header for humidity sensor ==
87 +=== P13 – header for humidity sensor ===
36 36  
37 -[[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
89 +Receptacle Housing: Molex 430250400. Terminals: Molex 43030
38 38  
91 +[[image:1732198896526-660.png||data-xwiki-image-style-alignment="center" height="70" width="64"]]
92 +
39 39  |**Pin**|**Name**|**Description**
40 40  |**1**|**+5V**|Supply voltage 5 V, max 50 mA
41 41  |**2**|**GND**|Ground
... ... @@ -42,50 +42,73 @@
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 ==
99 +=== P8 – header of relay 1 ===
46 46  
47 -[[image:1731517023208-641.png||data-xwiki-image-style-alignment="center"]]
101 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
48 48  
103 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
104 +
49 49  By default, relay 1 is used to control the discharging contactor.
50 50  
51 51  |**Pin**|**Name**|**Description**
52 -|**1**|**V+**|Switching voltage (up to 55V, max 2A)
108 +|**1**|**V+**|Switching voltage (up to 55V, max 3A)
53 53  |**2**|**NO**|Normally open contact
54 54  
55 -== P9 – header of relay 2 ==
111 +Contactor connection example for all relays:
56 56  
57 -[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
113 +[[image:1741619814065-850.png||height="189" width="252"]]
58 58  
115 +=== P9 – header of relay 2 ===
116 +
117 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
118 +
119 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
120 +
59 59  By default, relay 2 is used to output the “Allow charging” signal.
60 60  
61 61  |**Pin**|**Name**|**Description**
62 -|**1**|**V+**|Switching voltage (up to 55V, max 2A)
124 +|**1**|**V+**|Switching voltage (up to 55V, max 3A)
63 63  |**2**|**NO**|Normally open contact
64 64  
65 -== P6 – header of relay 3 ==
127 +Contactor connection example: see relay 1.
66 66  
67 -[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
129 +=== P6 – header of relay 3 ===
68 68  
131 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
132 +
133 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
134 +
69 69  By default, relay 3 is used to control the charging contactor.
70 70  
71 71  |**Pin**|**Name**|**Description**
72 -|**1**|**V+**|Switching voltage (up to 55V, max 8A)
138 +|**1**|**V+**|Switching voltage up to 55V,
139 +up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
73 73  |**2**|**NO**|Normally open contact
74 74  
75 -== P7 – header of relay 4 ==
142 +Contactor connection example: see relay 1.
76 76  
77 -[[image:1731517025702-799.png||data-xwiki-image-style-alignment="center"]]
144 +=== P7 – header of relay 4 ===
78 78  
146 +Receptacle Housing: Molex 39012020. Terminals: Molex 5556
147 +
148 +[[image:1732198827034-560.png||data-xwiki-image-style-alignment="center" height="78" width="41"]]
149 +
79 79  By default, relay 4 is used to control the heater.
80 80  
81 81  |**Pin**|**Name**|**Description**
82 -|**1**|**V+**|Switching voltage (up to 55V, max 8A)
153 +|**1**|**V+**|Switching voltage up to 55V,
154 +up to 8A (board rev. 2.1b), up to 3A (board rev. 2.1c)
83 83  |**2**|**NO**|Normally open contact
84 84  
85 -== P14 – header for CAN and RS-485 interfaces ==
157 +Contactor connection example: see relay 1.
86 86  
87 -[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
159 +=== P14 – header for CAN and RS-485 interfaces ===
88 88  
161 +Receptacle Housing: Molex 430250600. Terminals: Molex 43030
162 +
163 +[[image:1731517180930-597.png||data-xwiki-image-style-alignment="center" height="81" width="113"]]
164 +
165 +(% style="width:641px" %)
89 89  |**Pin**|**Name**|**Description**
90 90  |**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
91 91  |**2**|**CAN_H**|CAN H line for communication with external equipment
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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 ==
174 +=== P21 – CAN termination resistor jumper ===
98 98  
99 -[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center"]]
176 +[[image:1731517188900-976.png||data-xwiki-image-style-alignment="center" height="78" width="149"]]
100 100  
101 101  To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
102 102  
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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 ==
184 +=== P22 - RS-485 termination resistor jumper ===
108 108  
109 -[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center"]]
186 +[[image:1731517195672-298.png||data-xwiki-image-style-alignment="center" height="81" width="155"]]
110 110  
111 111  To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
112 112  
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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 ==
194 +=== P11 – header for discrete inputs/outputs ===
118 118  
119 -[[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
196 +Receptacle Housing: Molex 430251600. Terminals: Molex 43030
120 120  
198 +[[image:1732198937514-731.png||data-xwiki-image-style-alignment="center" height="85" width="272"]]
199 +
121 121  |**Pin**|**Name**|**Description**
122 122  |**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
123 123  |**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
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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 ==
218 +== Indicators ==
140 140  
220 +=== DS1 – power indicator ===
221 +
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 ==
226 +=== 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 ==
232 +=== 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 ==
238 +=== DS4 – error indicator ===
158 158  
159 -|**State**|**Description**
160 -|**Blinking red**|Errors in communication with BMS Logic
161 161  
162 -== DS7 – relay 1 indicator ==
241 +|(**State**|**Description**
242 +|(**Blinking red**|Errors in communication with BMS Logic
163 163  
244 +=== DS7 – relay 1 indicator ===
245 +
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 ==
250 +=== DS8 – relay 2 indicator ===
169 169  
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 ==
256 +=== 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 ==
262 +=== DS6 – relay 4 indicator ===
181 181  
182 182  |**State**|**Description**
183 183  |**Lights green**|Relay #4 is closed
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