Siemens SIMOVERT MASTERDRIVES Manual page 465

Communication / CBC
8.4.3.2 EMC measures
Shielding
NOTICE
8.4-10
♦ When stripping the insulation off the shield, make sure that the
shield is not damaged!
♦ When stripping the insulation off the core ends, make sure that the
copper core is not damaged!
Data transfer rate
10 kBit/s
20 kbit/s
50 kBit/s
100 kBit/s
125 kBit/s
250 kBit/s
500 kBit/s
800 kBit/s
1 Mbit/s
Table 8.4-2 Cable length in relation to the baud rate
For fault-free CAN bus operation, the following measures are
necessary:
The bus cables must be twisted and shielded and are to be routed
separately from power cables, the minimum clearance being 20 cm.
The shield must be connected through the largest possible surface area
on both sides, i.e. the shield of the bus cable between 2 converters
must be connected to the converter housing or the connector housing
at both ends. The same applies to the shield of the bus cable between
the CAN bus master and the converter.
If bus and power cables intersect, they must do so at an angle of 90 °.
Max. cable length (in m)
6SE7087-6QX70 (Version AD)
Compendium Motion Control
10.2004
1000
1000
1000
750
530
270
100
20
9
Siemens AG
SIMOVERT MASTERDRIVES