18
In table 10 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 11. CAN bus restrictions
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 these resistors at the end nodes to prevent reflections on the line. The value of this
resistor should be
±
120 ohms.
Please note that the terminator can be connected directly to the second connector on the
Li-ion battery by using the available Super B terminators.
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 the CAN power cable (see figure 9).
This situation may occur when a USB-to CAN interface is directly connected to the Li-ion
battery. When using the SB BCI with one Li-ion battery, the CAN power cable is required.
When using the SB BCI with 2 to 16 Li-ion batteries, the CAN power cable isn’t required. The
power is provided by the BCI.
Содержание NOMADA 12V105Ah
Страница 1: ...Manual NOMADA 12V105Ah Version April 2020 ...
Страница 25: ...25 Be in charge Super B ...