Bosch PAVIRO PVA-2P500 Operation Manual page 22

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22
en | Connection
The following table allows initial estimates for the required cable cross-section for different
bus lengths and various numbers of bus participants.
Bus length (in m)
100
250
500
Table 6.4: CAN BUS cable cross-section
If a participant cannot be directly connected to the CAN bus, a stub line (branch line) must be
used. Since there must always be precisely two terminating resistors on a CAN bus, a stub line
cannot be terminated. This creates reflections, which impair the rest of the bus system. To
minimize these reflections, these stub lines must not exceed a maximum individual length of
2 m at data transmission rates of up to 125 kbit/s, or a maximum length of 0.3 m at higher bit
rates. The overall length of all branch lines must not exceed 30 m.
The following applies:
See also
18-Jun-2015 | 04 | F01U306898
Number of devices on the CAN Bus
32
0.25 mm² or AWG24
0.34 mm² or AWG22
0.75 mm² or AWG18
In terms of rack wiring, standard RJ-45 patch cables with 100-ohm impedance (AWG 24/
AWG 26) can be used for short distances (up to 10 m).
The guidelines specified above for the network cabling must be used when wiring the
racks with each other and for the building installation.
Configuring the CAN baud rate, page 24
64
0.34 mm² or AWG22
0.5 mm² or AWG20
0.75 mm² or AWG18
Operation manual
PAVIRO Amplifier
100
0.34 mm² or AWG22
0.5 mm² or AWG20
1.0 mm² or AWG17

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