Super B NOMIA 12V210AH, Руководство пользователя

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5.4.1. CAN Bus network topology
The CAN Bus must be used in a bus network topology. Do not use a ring- or a star topology.
The maximum CAN bus length is limited. The Li-ion battery has a fixed bitrate of 250kbps.
In table 12 is an overview of these restrictions.
Bit rate Bus length (L) Max. stub length (S) Accumulated stub length
250 kbps
250 m
11 m
55 m
Table 12. CAN bus speed
5.4.2. Termination Resistors
The CAN bus requires termination at the two ends of the bus. The USB-to-CAN interface may
be connected anywhere to the CAN bus.
Use termination resistors at the end nodes to prevent reflections on the line. The value of this
resistor should be +/- 120 ohms.
5.4.3. CAN bus power
Due to the galvanic isolation between the BMS and the Li-ion battery’s CAN interface an
external power supply is needed on the CAN bus.
The CAN bus can be powered through Con 2 (I/O Connection 7) or the CAN power cable (see
figure 17).
This situation may occur when a USB-to CAN interface is directly connected to the Li-ion
battery (see figure 16).
1. Connect Pin 1 of Con2 to the + terminal of the Li-ion battery.
2. Connect Pin 7 of Con2 to the - terminal of the Li-ion battery.