ESD C.3030.02, Manual

Page: 34 / 103

Wiring Notes
Manual • Doc.-No.: C.3030.21 / Rev. 1.4
CAN-CBX-AI420 Page 34 of 103
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5.2.2 Device Cabling
Attention:
If single shielded double twisted pair cables are used, realize the T-connections by
means of connectors that support connection of two CAN cables at one connector
where the cable’s shield is looped through e.g. DSUB9-connector from ERNI (ERBIC
CAN BUS MAX, order no.:154039).
The usage of esd’s T-connector type C.1311.03 is not recommended for single shielded
double twisted pair cables because the shield potential of the conductive DSUB
housing is not looped through this T-connector type.
Furthermore, mixed use of single twisted and double twisted cables should be avoided!
Fig. 17: Example for proper wiring with single shielded double twisted pair cables
5.2.3 Termination
)
If the used CAN interface is not equipped with an integrated CAN termination and it is at an end of
the bus, use external termination plugs.
)
A 9-pin DSUB-connector with integrated switchable termination resistor can be ordered e.g. from
ERNI (ERBIC CAN BUS MAX, female contacts, order no.:154039).