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Last modified by Admin on 2025/07/15 17:33
From version 21.3
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To version 20.1
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Summary

Details

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Title
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1 -2. Connection procedure
1 +2. Connection
Parent
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1 -Controllers.BMS Main 2\.1.WebHome
1 +Additional modules.BMS Main 2\.1.WebHome
Content
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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.
1 += ​​​​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 -
10 10  The BMS Main 2.1 headers are shown in figure below.
11 11  
12 12  [[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
13 13  
14 -(% class="wikigeneratedid" %)
15 -Following chapters describes the BMS Main 2.1 headers pinout.
16 -
17 17  === P1 – header for power supply ===
18 18  
19 19  [[image:1731516593096-166.png||data-xwiki-image-style-alignment="center"]]
20 20  
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
11 +|**Pin**|**Name**|**Description**
12 +|**1**|**GND**|Ground
13 +|**2**|**V+**|Supply voltage 9-30V
25 25  
26 26  === P15 – header for BMS Logic ===
27 27  
28 28  [[image:1731516577472-301.png||data-xwiki-image-style-alignment="center"]]
29 29  
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
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
36 36  
37 37  === P12 – header for current sensor ===
38 38  
39 39  [[image:1731516685999-633.png||data-xwiki-image-style-alignment="center"]]
40 40  
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)
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)
47 47  
48 48  === P13 – header for humidity sensor ===
49 49  
50 50  [[image:1731516942455-641.png||data-xwiki-image-style-alignment="center"]]
51 51  
52 -(% style="width:531px" %)
53 -|(% style="width:77px" %)**Pin**|(% style="width:92px" %)**Name**|(% style="width:359px" %)**Description**
54 -|(% style="width:77px" %)**1**|(% style="width:92px" %)**+5V**|(% style="width:359px" %)Supply voltage 5 V, max 50 mA
55 -|(% style="width:77px" %)**2**|(% style="width:92px" %)**GND**|(% style="width:359px" %)Ground
56 -|(% style="width:77px" %)**3**|(% style="width:92px" %)**Vhs**|(% style="width:359px" %)ADC input (humidity sensor output)
57 -|(% style="width:77px" %)**4**|(% style="width:92px" %)**Vts**|(% style="width:359px" %)ADC input (temperature sensor output)
39 +|**Pin**|**Name**|**Description**
40 +|**1**|**+5V**|Supply voltage 5 V, max 50 mA
41 +|**2**|**GND**|Ground
42 +|**3**|**Vhs**|ADC input (humidity sensor output)
43 +|**4**|**Vts**|ADC input (temperature sensor output)
58 58  
59 59  === P8 – header of relay 1 ===
60 60  
... ... @@ -62,10 +62,9 @@
62 62  
63 63  By default, relay 1 is used to control the discharging contactor.
64 64  
65 -(% style="width:527px" %)
66 -|(% style="width:82px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:351px" %)**Description**
67 -|(% style="width:82px" %)**1**|(% style="width:91px" %)**V+**|(% style="width:351px" %)Switching voltage (up to 55V, max 2A)
68 -|(% style="width:82px" %)**2**|(% style="width:91px" %)**NO**|(% style="width:351px" %)Normally open contact
51 +|**Pin**|**Name**|**Description**
52 +|**1**|**V+**|Switching voltage (up to 55V, max 2A)
53 +|**2**|**NO**|Normally open contact
69 69  
70 70  === P9 – header of relay 2 ===
71 71  
... ... @@ -73,10 +73,9 @@
73 73  
74 74  By default, relay 2 is used to output the “Allow charging” signal.
75 75  
76 -(% style="width:524px" %)
77 -|(% style="width:89px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:341px" %)**Description**
78 -|(% style="width:89px" %)**1**|(% style="width:91px" %)**V+**|(% style="width:341px" %)Switching voltage (up to 55V, max 2A)
79 -|(% style="width:89px" %)**2**|(% style="width:91px" %)**NO**|(% style="width:341px" %)Normally open contact
61 +|**Pin**|**Name**|**Description**
62 +|**1**|**V+**|Switching voltage (up to 55V, max 2A)
63 +|**2**|**NO**|Normally open contact
80 80  
81 81  === P6 – header of relay 3 ===
82 82  
... ... @@ -84,10 +84,9 @@
84 84  
85 85  By default, relay 3 is used to control the charging contactor.
86 86  
87 -(% style="width:524px" %)
88 -|(% style="width:101px" %)**Pin**|(% style="width:88px" %)**Name**|(% style="width:332px" %)**Description**
89 -|(% style="width:101px" %)**1**|(% style="width:88px" %)**V+**|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
90 -|(% style="width:101px" %)**2**|(% style="width:88px" %)**NO**|(% style="width:332px" %)Normally open contact
71 +|**Pin**|**Name**|**Description**
72 +|**1**|**V+**|Switching voltage (up to 55V, max 8A)
73 +|**2**|**NO**|Normally open contact
91 91  
92 92  === P7 – header of relay 4 ===
93 93  
... ... @@ -95,23 +95,21 @@
95 95  
96 96  By default, relay 4 is used to control the heater.
97 97  
98 -(% style="width:530px" %)
99 -|(% style="width:102px" %)**Pin**|(% style="width:93px" %)**Name**|(% style="width:332px" %)**Description**
100 -|(% style="width:102px" %)**1**|(% style="width:93px" %)**V+**|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
101 -|(% style="width:102px" %)**2**|(% style="width:93px" %)**NO**|(% style="width:332px" %)Normally open contact
81 +**Pin**|**Name**|**Description**
82 +**1**|**V+**|Switching voltage (up to 55V, max 8A)
83 +**2**|**NO**|Normally open contact
102 102  
103 103  === P14 – header for CAN and RS-485 interfaces ===
104 104  
105 105  [[image:1731517180930-597.png||data-xwiki-image-style-alignment="center"]]
106 106  
107 -(% style="width:641px" %)
108 -|(% style="width:107px" %)**Pin**|(% style="width:127px" %)**Name**|(% style="width:404px" %)**Description**
109 -|(% style="width:107px" %)**1**|(% style="width:127px" %)**EXT_RS485_A**|(% style="width:404px" %)RS-485 line A for communication with external equipment
110 -|(% style="width:107px" %)**2**|(% style="width:127px" %)**CAN_H**|(% style="width:404px" %)CAN H line for communication with external equipment
111 -|(% style="width:107px" %)**3**|(% style="width:127px" %)**+5V_CAN**|(% style="width:404px" %)Supply voltage 5V for external devices, max 200 mA
112 -|(% style="width:107px" %)**4**|(% style="width:127px" %)**EXT_RS485_B**|(% style="width:404px" %)RS-485 line B for communication with external equipment
113 -|(% style="width:107px" %)**5**|(% style="width:127px" %)**CAN_L**|(% style="width:404px" %)CAN L line for communication with external equipment
114 -|(% style="width:107px" %)**6**|(% style="width:127px" %)**GND_CAN**|(% style="width:404px" %)Ground
89 +|**Pin**|**Name**|**Description**
90 +|**1**|**EXT_RS485_A**|RS-485 line A for communication with external equipment
91 +|**2**|**CAN_H**|CAN H line for communication with external equipment
92 +|**3**|**+5V_CAN**|Supply voltage 5V for external devices, max 200 mA
93 +|**4**|**EXT_RS485_B**|RS-485 line B for communication with external equipment
94 +|**5**|**CAN_L**|CAN L line for communication with external equipment
95 +|**6**|**GND_CAN**|Ground
115 115  
116 116  === P21 – CAN termination resistor jumper ===
117 117  
... ... @@ -129,9 +129,9 @@
129 129  
130 130  To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
131 131  
132 -|**Pin**|(% style="width:108px" %)**Name**|(% style="width:1296px" %)**Description**
133 -|**1-2**|(% style="width:108px" %)**120 Ohm**|(% style="width:1296px" %)Terminating resistor 120 Ohm is connected
134 -|**2-3**|(% style="width:108px" %)**-**|(% style="width:1296px" %)Terminating resistor 120 Ohm is not connected
113 +|**Pin**|**Name**|**Description**
114 +|**1-2**|**120 Ohm**|Terminating resistor 120 Ohm is connected
115 +|**2-3**|**-**|Terminating resistor 120 Ohm is not connected
135 135  
136 136  === P11 – header for discrete inputs/outputs ===
137 137