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Wiki source code of 2. Connection procedure

Version 25.2 by Admin on 2024/11/20 11:04
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Admin 20.3 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.
Admin 1.2 2
Admin 20.3 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
Admin 1.2 10 The BMS Main 2.1 headers are shown in figure below.
11
Admin 17.2 12 [[The BMS Main 2.1 headers>>image:1731517946345-632.png||height="417" width="451"]]
Admin 1.2 13
Admin 20.3 14 (% class="wikigeneratedid" %)
Admin 21.1 15 Following chapters describes the BMS Main 2.1 headers pinout.
Admin 20.3 16
Admin 13.1 17 === P1 – header for power supply ===
Admin 2.2 18
Admin 24.1 19 [[image:1731516593096-166.png||height="80" width="42"]]
Admin 2.2 20
Admin 21.2 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
Admin 4.2 25
Admin 13.1 26 === P15 – header for BMS Logic ===
Admin 4.2 27
Admin 23.1 28 [[image:1731516577472-301.png||height="77" width="71"]]
Admin 4.2 29
Admin 21.2 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
Admin 5.2 36
Admin 13.1 37 === P12 – header for current sensor ===
Admin 5.2 38
Admin 23.1 39 [[image:1731516685999-633.png||height="74" width="68"]]
Admin 5.3 40
Admin 21.2 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)
Admin 5.3 47
Admin 13.1 48 === P13 – header for humidity sensor ===
Admin 5.3 49
Admin 23.1 50 [[image:1731516942455-641.png||height="70" width="64"]]
Admin 6.2 51
Admin 21.3 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)
Admin 6.2 58
Admin 13.1 59 === P8 – header of relay 1 ===
Admin 6.2 60
Admin 23.1 61 [[image:1731517023208-641.png||height="80" width="42"]]
Admin 6.2 62
63 By default, relay 1 is used to control the discharging contactor.
64
Admin 21.3 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
Admin 6.2 69
Admin 13.1 70 === P9 – header of relay 2 ===
Admin 11.2 71
Admin 23.1 72 [[image:1731517025702-799.png||height="71" width="37"]]
Admin 11.2 73
74 By default, relay 2 is used to output the “Allow charging” signal.
75
Admin 21.3 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
Admin 6.2 80
Admin 13.1 81 === P6 – header of relay 3 ===
Admin 6.2 82
Admin 23.1 83 [[image:1731517025702-799.png||height="67" width="35"]]
Admin 6.2 84
Admin 11.2 85 By default, relay 3 is used to control the charging contactor.
Admin 6.2 86
Admin 21.3 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
Admin 6.2 91
Admin 13.1 92 === P7 – header of relay 4 ===
Admin 6.2 93
Admin 24.1 94 [[image:1731517025702-799.png||height="65" width="34"]]
Admin 11.2 95
96 By default, relay 4 is used to control the heater.
97
Admin 21.3 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
Admin 6.2 102
Admin 13.1 103 === P14 – header for CAN and RS-485 interfaces ===
Admin 6.2 104
Admin 23.1 105 [[image:1731517180930-597.png||height="81" width="113"]]
Admin 6.2 106
Admin 21.3 107 (% 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
Admin 11.2 115
Admin 13.1 116 === P21 – CAN termination resistor jumper ===
Admin 11.2 117
Admin 23.1 118 [[image:1731517188900-976.png||height="78" width="149"]]
Admin 11.2 119
120 To connect the termination resistor between the lines **CAN_H** and **CAN_L**, install a jumper, according to the P21 pinout:
121
Admin 21.4 122 (% 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
Admin 11.2 126
Admin 13.1 127 === P22 - RS-485 termination resistor jumper ===
Admin 11.2 128
Admin 22.2 129 [[image:1731517195672-298.png||height="81" width="155"]]
Admin 11.2 130
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
Admin 21.4 133 (% 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
Admin 11.2 137
Admin 13.1 138 === P11 – header for discrete inputs/outputs ===
Admin 11.2 139
Admin 23.1 140 [[image:1731517206246-979.png||height="81" width="258"]]
Admin 11.2 141
Admin 21.4 142 (% 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)
Admin 11.2 160
Admin 13.1 161 = Indicators =
Admin 11.2 162
Admin 13.1 163 === DS1 – power indicator ===
164
Admin 21.4 165 (% 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
Admin 11.2 169
Admin 13.1 170 === DS2 – operation indicator ===
Admin 11.2 171
Admin 21.4 172 (% 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
Admin 11.2 176
Admin 13.1 177 === DS3 – communication indicator ===
Admin 11.2 178
Admin 21.4 179 (% 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
Admin 11.2 183
Admin 13.1 184 === DS4 – error indicator ===
Admin 11.2 185
Admin 21.4 186 (% 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
Admin 11.2 189
Admin 13.1 190 === DS7 – relay 1 indicator ===
Admin 11.2 191
Admin 21.4 192 (% 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
Admin 11.2 196
Admin 13.1 197 === DS8 – relay 2 indicator ===
Admin 11.2 198
199
Admin 22.1 200 (% style="width:542px" %)
201 |(% style="width:180px" %)**State**|(% style="width:359px" %)**Description**
202 |(% style="width:180px" %)**Lights green**|(% style="width:359px" %)Relay #2 is closed
203 |(% style="width:180px" %)**Off**|(% style="width:359px" %)Relay #2 is opened
Admin 19.1 204
Admin 13.1 205 === DS5 – relay 3 indicator ===
Admin 11.2 206
Admin 22.1 207 (% style="width:542px" %)
208 |(% style="width:183px" %)**State**|(% style="width:356px" %)**Description**
209 |(% style="width:183px" %)**Lights green**|(% style="width:356px" %)Relay #3 is closed
210 |(% style="width:183px" %)**Off**|(% style="width:356px" %)Relay #3 is opened
Admin 11.2 211
Admin 13.1 212 === DS6 – relay 4 indicator ===
Admin 11.2 213
Admin 22.1 214 (% style="width:542px" %)
215 |(% style="width:187px" %)**State**|(% style="width:352px" %)**Description**
216 |(% style="width:187px" %)**Lights green**|(% style="width:352px" %)Relay #4 is closed
217 |(% style="width:187px" %)**Off**|(% style="width:352px" %)Relay #4 is opened
Admin 11.2 218
Admin 5.3 219