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Wiki source code of 2. Connection

Version 25.5 by Admin on 2024/11/21 14:11
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1 == 2.1 Connection procedure ==
2
3 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.
4
5 1. Connect the charging and discharging contactors to the P6-P9 headers.
6 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.
7 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.
8 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.
9
10 == 2.2 ​​​​Headers description ==
11
12 The BMS Main 2.1 headers are shown in figure below.
13
14 [[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
15
16 (% class="wikigeneratedid" %)
17 Following chapters describes the BMS Main 2.1 headers pinout.
18
19 === 2.2.1 P1 – header for power supply ===
20
21 [[image:1731516593096-166.png||height="80" width="42"]]
22
23 (% style="width:339px" %)
24 |(% style="width:71px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:174px" %)**Description**
25 |(% style="width:71px" %)**1**|(% style="width:91px" %)**GND**|(% style="width:174px" %)Ground
26 |(% style="width:71px" %)**2**|(% style="width:91px" %)**V+**|(% style="width:174px" %)Supply voltage 9-30V
27
28 === 2.2.2 P15 – header for BMS Logic ===
29
30 [[image:1731516577472-301.png||height="77" width="71"]]
31
32 (% style="width:524px" %)
33 |(% style="width:69px" %)**Pin**|(% style="width:97px" %)**Name**|(% style="width:355px" %)**Description**
34 |(% style="width:69px" %)**1**|(% style="width:97px" %)**RS485_A**|(% style="width:355px" %)RS-485 line A for communication with BMS Logic
35 |(% style="width:69px" %)**2**|(% style="width:97px" %)**RS485_B**|(% style="width:355px" %)RS-485 line B for communication with BMS Logic
36 |(% style="width:69px" %)**3**|(% style="width:97px" %)**+5V**|(% style="width:355px" %)Supply voltage for BMS Logic
37 |(% style="width:69px" %)**4**|(% style="width:97px" %)**GND**|(% style="width:355px" %)Ground
38
39 === 2.2.3 P12 – header for current sensor ===
40
41 [[image:1731516685999-633.png||height="74" width="68"]]
42
43 (% style="width:531px" %)
44 |(% style="width:75px" %)**Pin**|(% style="width:93px" %)**Name**|(% style="width:360px" %)**Description**
45 |(% style="width:75px" %)**1**|(% style="width:93px" %)**+5V**|(% style="width:360px" %)Supply voltage for the current sensor 5V, max 50 mA
46 |(% style="width:75px" %)**2**|(% style="width:93px" %)**GND**|(% style="width:360px" %)Ground
47 |(% style="width:75px" %)**3**|(% style="width:93px" %)**Vcs**|(% style="width:360px" %)ADC input (current sensor output)
48 |(% style="width:75px" %)**4**|(% style="width:93px" %)**Vref**|(% style="width:360px" %)ADC input (current sensor reference signal)
49
50 === 2.2.4 P13 – header for humidity sensor ===
51
52 [[image:1731516942455-641.png||height="70" width="64"]]
53
54 (% style="width:531px" %)
55 |(% style="width:77px" %)**Pin**|(% style="width:92px" %)**Name**|(% style="width:359px" %)**Description**
56 |(% style="width:77px" %)**1**|(% style="width:92px" %)**+5V**|(% style="width:359px" %)Supply voltage 5 V, max 50 mA
57 |(% style="width:77px" %)**2**|(% style="width:92px" %)**GND**|(% style="width:359px" %)Ground
58 |(% style="width:77px" %)**3**|(% style="width:92px" %)**Vhs**|(% style="width:359px" %)ADC input (humidity sensor output)
59 |(% style="width:77px" %)**4**|(% style="width:92px" %)**Vts**|(% style="width:359px" %)ADC input (temperature sensor output)
60
61 === 2.2.5 P8 – header of relay 1 ===
62
63 [[image:1731517023208-641.png||height="80" width="42"]]
64
65 By default, relay 1 is used to control the discharging contactor.
66
67 (% style="width:527px" %)
68 |(% style="width:82px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:351px" %)**Description**
69 |(% style="width:82px" %)**1**|(% style="width:91px" %)**V+**|(% style="width:351px" %)Switching voltage (up to 55V, max 2A)
70 |(% style="width:82px" %)**2**|(% style="width:91px" %)**NO**|(% style="width:351px" %)Normally open contact
71
72 === 2.2.6 P9 – header of relay 2 ===
73
74 [[image:1731517025702-799.png||height="71" width="37"]]
75
76 By default, relay 2 is used to output the “Allow charging” signal.
77
78 (% style="width:524px" %)
79 |(% style="width:89px" %)**Pin**|(% style="width:91px" %)**Name**|(% style="width:341px" %)**Description**
80 |(% style="width:89px" %)**1**|(% style="width:91px" %)**V+**|(% style="width:341px" %)Switching voltage (up to 55V, max 2A)
81 |(% style="width:89px" %)**2**|(% style="width:91px" %)**NO**|(% style="width:341px" %)Normally open contact
82
83 === 2.2.7 P6 – header of relay 3 ===
84
85 [[image:1731517025702-799.png||height="67" width="35"]]
86
87 By default, relay 3 is used to control the charging contactor.
88
89 (% style="width:524px" %)
90 |(% style="width:101px" %)**Pin**|(% style="width:88px" %)**Name**|(% style="width:332px" %)**Description**
91 |(% style="width:101px" %)**1**|(% style="width:88px" %)**V+**|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
92 |(% style="width:101px" %)**2**|(% style="width:88px" %)**NO**|(% style="width:332px" %)Normally open contact
93
94 === 2.2.8 P7 – header of relay 4 ===
95
96 [[image:1731517025702-799.png||height="65" width="34"]]
97
98 By default, relay 4 is used to control the heater.
99
100 (% style="width:530px" %)
101 |(% style="width:102px" %)**Pin**|(% style="width:93px" %)**Name**|(% style="width:332px" %)**Description**
102 |(% style="width:102px" %)**1**|(% style="width:93px" %)**V+**|(% style="width:332px" %)Switching voltage (up to 55V, max 8A)
103 |(% style="width:102px" %)**2**|(% style="width:93px" %)**NO**|(% style="width:332px" %)Normally open contact
104
105 === 2.2.9 P14 – header for CAN and RS-485 interfaces ===
106
107 [[image:1731517180930-597.png||height="81" width="113"]]
108
109 (% style="width:641px" %)
110 |(% style="width:107px" %)**Pin**|(% style="width:127px" %)**Name**|(% style="width:404px" %)**Description**
111 |(% style="width:107px" %)**1**|(% style="width:127px" %)**EXT_RS485_A**|(% style="width:404px" %)RS-485 line A for communication with external equipment
112 |(% style="width:107px" %)**2**|(% style="width:127px" %)**CAN_H**|(% style="width:404px" %)CAN H line for communication with external equipment
113 |(% style="width:107px" %)**3**|(% style="width:127px" %)**+5V_CAN**|(% style="width:404px" %)Supply voltage 5V for external devices, max 200 mA
114 |(% style="width:107px" %)**4**|(% style="width:127px" %)**EXT_RS485_B**|(% style="width:404px" %)RS-485 line B for communication with external equipment
115 |(% style="width:107px" %)**5**|(% style="width:127px" %)**CAN_L**|(% style="width:404px" %)CAN L line for communication with external equipment
116 |(% style="width:107px" %)**6**|(% style="width:127px" %)**GND_CAN**|(% style="width:404px" %)Ground
117
118 === 2.2.10 P21 – CAN termination resistor jumper ===
119
120 [[image:1731517188900-976.png||height="78" width="149"]]
121
122 To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
123
124 (% style="width:643px" %)
125 |**Pin**|(% style="width:122px" %)**Name**|(% style="width:400px" %)**Description**
126 |**1-2**|(% style="width:122px" %)**120 Ohm**|(% style="width:400px" %)Termination resistor 120 Ohm is connected
127 |**2-3**|(% style="width:122px" %)**-**|(% style="width:400px" %)Termination resistor 120 Ohm is not connected
128
129 === 2.2.11 P22 - RS-485 termination resistor jumper ===
130
131 [[image:1731517195672-298.png||height="81" width="155"]]
132
133 To connect the termination resistor between the **EXT_RS485_A** and **EXT_RS485_B** lines, install a jumper according to the P22 pinout:
134
135 (% style="width:644px" %)
136 |**Pin**|(% style="width:121px" %)**Name**|(% style="width:402px" %)**Description**
137 |**1-2**|(% style="width:121px" %)**120 Ohm**|(% style="width:402px" %)Terminating resistor 120 Ohm is connected
138 |**2-3**|(% style="width:121px" %)**-**|(% style="width:402px" %)Terminating resistor 120 Ohm is not connected
139
140 === 2.2.12 P11 – header for discrete inputs/outputs ===
141
142 [[image:1731517206246-979.png||height="81" width="258"]]
143
144 (% style="width:584px" %)
145 |(% style="width:98px" %)**Pin**|(% style="width:157px" %)**Name**|(% style="width:326px" %)**Description**
146 |(% style="width:98px" %)**16**|(% style="width:157px" %)**IN_1**|(% style="width:326px" %)Discrete input #1 “dry contact” (+5V)
147 |(% style="width:98px" %)**8**|(% style="width:157px" %)**GND_1**|(% style="width:326px" %)Discrete input #1 “dry contact” (ground)
148 |(% style="width:98px" %)**15**|(% style="width:157px" %)**IN_2**|(% style="width:326px" %)Discrete input #2 “dry contact” (+5V)
149 |(% style="width:98px" %)**7**|(% style="width:157px" %)**GND_2**|(% style="width:326px" %)Discrete input #2 “dry contact” (ground)
150 |(% style="width:98px" %)**14**|(% style="width:157px" %)**IN_3**|(% style="width:326px" %)Discrete input #3 “dry contact” (+5V)
151 |(% style="width:98px" %)**6**|(% style="width:157px" %)**GND_3**|(% style="width:326px" %)Discrete input #3 “dry contact” (ground)
152 |(% style="width:98px" %)**13**|(% style="width:157px" %)**IN_4**|(% style="width:326px" %)Discrete input #4 “dry contact” (+5V)
153 |(% style="width:98px" %)**5**|(% style="width:157px" %)**GND_4**|(% style="width:326px" %)Discrete input #4 “dry contact” (ground)
154 |(% style="width:98px" %)**12**|(% style="width:157px" %)**OUT_4**|(% style="width:326px" %)Discrete output #4 (+5V, 20mA)
155 |(% style="width:98px" %)**4**|(% style="width:157px" %)**GND_OUT_4**|(% style="width:326px" %)Discrete output #4 (ground)
156 |(% style="width:98px" %)**11**|(% style="width:157px" %)**OUT_3**|(% style="width:326px" %)Discrete output #3 (+5V, 20mA)
157 |(% style="width:98px" %)**3**|(% style="width:157px" %)**GND_OUT_3**|(% style="width:326px" %)Discrete output #3 (ground)
158 |(% style="width:98px" %)**10**|(% style="width:157px" %)**OUT_2**|(% style="width:326px" %)Discrete output #2 (+5V, 20mA)
159 |(% style="width:98px" %)**2**|(% style="width:157px" %)**GND_OUT_2**|(% style="width:326px" %)Discrete output #2 (ground)
160 |(% style="width:98px" %)**9**|(% style="width:157px" %)**OUT_1**|(% style="width:326px" %)Discrete output #1 (+5V, 20mA)
161 |(% style="width:98px" %)**1**|(% style="width:157px" %)**GND_OUT_1**|(% style="width:326px" %)Discrete output #1 (ground)
162
163 = 2.3 Indicators =
164
165 === 2.3.1 DS1 – power indicator ===
166
167 (% style="width:442px" %)
168 |(% style="width:138px" %)**State**|(% style="width:301px" %)**Description**
169 |(% style="width:138px" %)**Lights red**|(% style="width:301px" %)The device is powered
170 |(% style="width:138px" %)**Off**|(% style="width:301px" %)The device is not powered
171
172 === 2.3.2 DS2 – operation indicator ===
173
174 (% style="width:442px" %)
175 |(% style="width:137px" %)**State**|(% style="width:302px" %)**Description**
176 |(% style="width:137px" %)**Blinking green**|(% style="width:302px" %)The BMS firmware is running
177 |(% style="width:137px" %)**Off**|(% style="width:302px" %)The BMS firmware is not running
178
179 === 2.3.3 DS3 – communication indicator ===
180
181 (% style="width:539px" %)
182 |(% style="width:175px" %)**State**|(% style="width:361px" %)**Description**
183 |(% style="width:175px" %)**Blinking yellow (2Hz)**|(% style="width:361px" %)Initializing communication with BMS Logic boards
184 |(% style="width:175px" %)**Blinking yellow (25Hz)**|(% style="width:361px" %)Communication with BMS Logic is established
185
186 === 2.3.4 DS4 – error indicator ===
187
188 (% style="width:539px" %)
189 |(% style="width:176px" %)**State**|(% style="width:360px" %)**Description**
190 |(% style="width:176px" %)**Blinking red**|(% style="width:360px" %)Errors in communication with BMS Logic
191
192 === 2.3.5 DS7 – relay 1 indicator ===
193
194 (% style="width:541px" %)
195 |(% style="width:179px" %)**State**|(% style="width:359px" %)**Description**
196 |(% style="width:179px" %)**Lights green**|(% style="width:359px" %)Relay #1 is closed
197 |(% style="width:179px" %)**Off**|(% style="width:359px" %)Relay #1 is opened
198
199 === 2.3.6 DS8 – relay 2 indicator ===
200
201 (% style="width:542px" %)
202 |(% style="width:180px" %)**State**|(% style="width:359px" %)**Description**
203 |(% style="width:180px" %)**Lights green**|(% style="width:359px" %)Relay #2 is closed
204 |(% style="width:180px" %)**Off**|(% style="width:359px" %)Relay #2 is opened
205
206 === 2.3.7 DS5 – relay 3 indicator ===
207
208 (% style="width:542px" %)
209 |(% style="width:183px" %)**State**|(% style="width:356px" %)**Description**
210 |(% style="width:183px" %)**Lights green**|(% style="width:356px" %)Relay #3 is closed
211 |(% style="width:183px" %)**Off**|(% style="width:356px" %)Relay #3 is opened
212
213 === 2.3.8 DS6 – relay 4 indicator ===
214
215 (% style="width:542px" %)
216 |(% style="width:187px" %)**State**|(% style="width:352px" %)**Description**
217 |(% style="width:187px" %)**Lights green**|(% style="width:352px" %)Relay #4 is closed
218 |(% style="width:187px" %)**Off**|(% style="width:352px" %)Relay #4 is opened
219
220