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Last modified by Admin on 2025/07/15 17:33
From version 21.4
edited by Admin
on 2024/11/19 07:57
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To version 20.2
edited by Admin
on 2024/11/13 17:33
Change comment: Update document after refactoring.

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -2. Connection procedure
1 +2. Connection
Content
... ... @@ -1,60 +1,46 @@
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  
... ... @@ -119,10 +119,9 @@
119 119  
120 120  To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
121 121  
122 -(% style="width:643px" %)
123 -|**Pin**|(% style="width:122px" %)**Name**|(% style="width:400px" %)**Description**
124 -|**1-2**|(% style="width:122px" %)**120 Ohm**|(% style="width:400px" %)Termination resistor 120 Ohm is connected
125 -|**2-3**|(% style="width:122px" %)**-**|(% style="width:400px" %)Termination resistor 120 Ohm is not connected
103 +|**Pin**|**Name**|**Description**
104 +|**1-2**|**120 Ohm**|Termination resistor 120 Ohm is connected
105 +|**2-3**|**-**|Termination resistor 120 Ohm is not connected
126 126  
127 127  === P22 - RS-485 termination resistor jumper ===
128 128  
... ... @@ -130,76 +130,69 @@
130 130  
131 131  To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
132 132  
133 -(% style="width:644px" %)
134 -|**Pin**|(% style="width:121px" %)**Name**|(% style="width:402px" %)**Description**
135 -|**1-2**|(% style="width:121px" %)**120 Ohm**|(% style="width:402px" %)Terminating resistor 120 Ohm is connected
136 -|**2-3**|(% style="width:121px" %)**-**|(% style="width:402px" %)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
137 137  
138 138  === P11 – header for discrete inputs/outputs ===
139 139  
140 140  [[image:1731517206246-979.png||data-xwiki-image-style-alignment="center"]]
141 141  
142 -(% style="width:584px" %)
143 -|(% style="width:98px" %)**Pin**|(% style="width:157px" %)**Name**|(% style="width:326px" %)**Description**
144 -|(% style="width:98px" %)**16**|(% style="width:157px" %)**IN_1**|(% style="width:326px" %)Discrete input #1 “dry contact” (+5V)
145 -|(% style="width:98px" %)**8**|(% style="width:157px" %)**GND_1**|(% style="width:326px" %)Discrete input #1 “dry contact” (ground)
146 -|(% style="width:98px" %)**15**|(% style="width:157px" %)**IN_2**|(% style="width:326px" %)Discrete input #2 “dry contact” (+5V)
147 -|(% style="width:98px" %)**7**|(% style="width:157px" %)**GND_2**|(% style="width:326px" %)Discrete input #2 “dry contact” (ground)
148 -|(% style="width:98px" %)**14**|(% style="width:157px" %)**IN_3**|(% style="width:326px" %)Discrete input #3 “dry contact” (+5V)
149 -|(% style="width:98px" %)**6**|(% style="width:157px" %)**GND_3**|(% style="width:326px" %)Discrete input #3 “dry contact” (ground)
150 -|(% style="width:98px" %)**13**|(% style="width:157px" %)**IN_4**|(% style="width:326px" %)Discrete input #4 “dry contact” (+5V)
151 -|(% style="width:98px" %)**5**|(% style="width:157px" %)**GND_4**|(% style="width:326px" %)Discrete input #4 “dry contact” (ground)
152 -|(% style="width:98px" %)**12**|(% style="width:157px" %)**OUT_4**|(% style="width:326px" %)Discrete output #4 (+5V, 20mA)
153 -|(% style="width:98px" %)**4**|(% style="width:157px" %)**GND_OUT_4**|(% style="width:326px" %)Discrete output #4 (ground)
154 -|(% style="width:98px" %)**11**|(% style="width:157px" %)**OUT_3**|(% style="width:326px" %)Discrete output #3 (+5V, 20mA)
155 -|(% style="width:98px" %)**3**|(% style="width:157px" %)**GND_OUT_3**|(% style="width:326px" %)Discrete output #3 (ground)
156 -|(% style="width:98px" %)**10**|(% style="width:157px" %)**OUT_2**|(% style="width:326px" %)Discrete output #2 (+5V, 20mA)
157 -|(% style="width:98px" %)**2**|(% style="width:157px" %)**GND_OUT_2**|(% style="width:326px" %)Discrete output #2 (ground)
158 -|(% style="width:98px" %)**9**|(% style="width:157px" %)**OUT_1**|(% style="width:326px" %)Discrete output #1 (+5V, 20mA)
159 -|(% style="width:98px" %)**1**|(% style="width:157px" %)**GND_OUT_1**|(% style="width:326px" %)Discrete output #1 (ground)
121 +|**Pin**|**Name**|**Description**
122 +|**16**|**IN_1**|Discrete input #1 “dry contact” (+5V)
123 +|**8**|**GND_1**|Discrete input #1 “dry contact” (ground)
124 +|**15**|**IN_2**|Discrete input #2 “dry contact” (+5V)
125 +|**7**|**GND_2**|Discrete input #2 “dry contact” (ground)
126 +|**14**|**IN_3**|Discrete input #3 “dry contact” (+5V)
127 +|**6**|**GND_3**|Discrete input #3 “dry contact” (ground)
128 +|**13**|**IN_4**|Discrete input #4 “dry contact” (+5V)
129 +|**5**|**GND_4**|Discrete input #4 “dry contact” (ground)
130 +|**12**|**OUT_4**|Discrete output #4 (+5V, 20mA)
131 +|**4**|**GND_OUT_4**|Discrete output #4 (ground)
132 +|**11**|**OUT_3**|Discrete output #3 (+5V, 20mA)
133 +|**3**|**GND_OUT_3**|Discrete output #3 (ground)
134 +|**10**|**OUT_2**|Discrete output #2 (+5V, 20mA)
135 +|**2**|**GND_OUT_2**|Discrete output #2 (ground)
136 +|**9**|**OUT_1**|Discrete output #1 (+5V, 20mA)
137 +|**1**|**GND_OUT_1**|Discrete output #1 (ground)
160 160  
161 161  = Indicators =
162 162  
163 163  === DS1 – power indicator ===
164 164  
165 -(% style="width:442px" %)
166 -|(% style="width:138px" %)**State**|(% style="width:301px" %)**Description**
167 -|(% style="width:138px" %)**Lights red**|(% style="width:301px" %)The device is powered
168 -|(% style="width:138px" %)**Off**|(% style="width:301px" %)The device is not powered
143 +|**State**|**Description**
144 +|**Lights red**|The device is powered
145 +|**Off**|The device is not powered
169 169  
170 170  === DS2 – operation indicator ===
171 171  
172 -(% style="width:442px" %)
173 -|(% style="width:137px" %)**State**|(% style="width:302px" %)**Description**
174 -|(% style="width:137px" %)**Blinking green**|(% style="width:302px" %)The BMS firmware is running
175 -|(% style="width:137px" %)**Off**|(% style="width:302px" %)The BMS firmware is not running
149 +|**State**|**Description**
150 +|**Blinking green**|The BMS firmware is running
151 +|**Off**|The BMS firmware is not running
176 176  
177 177  === DS3 – communication indicator ===
178 178  
179 -(% style="width:539px" %)
180 -|(% style="width:175px" %)**State**|(% style="width:361px" %)**Description**
181 -|(% style="width:175px" %)**Blinking yellow (2Hz)**|(% style="width:361px" %)Initializing communication with BMS Logic boards
182 -|(% style="width:175px" %)**Blinking yellow (25Hz)**|(% style="width:361px" %)Communication with BMS Logic is established
155 +|**State**|**Description**
156 +|**Blinking yellow (2Hz)**|Initializing communication with BMS Logic boards
157 +|**Blinking yellow (25Hz)**|Communication with BMS Logic is established
183 183  
184 184  === DS4 – error indicator ===
185 185  
186 -(% style="width:539px" %)
187 -|(% style="width:176px" %)**State**|(% style="width:360px" %)**Description**
188 -|(% style="width:176px" %)**Blinking red**|(% style="width:360px" %)Errors in communication with BMS Logic
161 +|**State**|**Description**
162 +|**Blinking red**|Errors in communication with BMS Logic
189 189  
190 190  === DS7 – relay 1 indicator ===
191 191  
192 -(% style="width:541px" %)
193 -|(% style="width:179px" %)**State**|(% style="width:359px" %)**Description**
194 -|(% style="width:179px" %)**Lights green**|(% style="width:359px" %)Relay #1 is closed
195 -|(% style="width:179px" %)**Off**|(% style="width:359px" %)Relay #1 is opened
166 +|**State**|**Description**
167 +|**Lights green**|Relay #1 is closed
168 +|**Off**|Relay #1 is opened
196 196  
197 197  === DS8 – relay 2 indicator ===
198 198  
199 199  
200 -|(% style="width:180px" %)**State**|(% style="width:1342px" %)**Description**
201 -|(% style="width:180px" %)**Lights green**|(% style="width:1342px" %)Relay #2 is closed
202 -|(% style="width:180px" %)**Off**|(% style="width:1342px" %)Relay #2 is opened
173 +|**State**|**Description**
174 +|**Lights green**|Relay #2 is closed
175 +|**Off**|Relay #2 is opened
203 203  
204 204  === DS5 – relay 3 indicator ===
205 205