Electrical installation
Page 124
Product Manual „Servo drives ARS 2320, ARS 2340, ARS 2320W, ARS 2360W“
Version 8.0
8.13.5
Connection notes [X4]
Caution!
When cabling the servo drive via the CAN bus, make sure to observe the following
information and notes in order to set up a stable and interference-free system. Improper
cabling may cause the CAN bus to malfunction which in turn can cause the servo drive
to shut down with an error due to safety reasons.
The CAN bus provides an easy and fail-safe way of interconnecting all components of a system. This
requires, however, compliance with the following notes on cabling.
Figure 42:
CAN bus cabling example
The individual nodes of the network are always connected in line so that the CAN cable is looped
through from servo drive to servo drive (see
Figure 42
).
A terminating resistor of 120
Ω
/-5% has to be present on both ends of the CAN bus cable. CAN
boards or PLCs often come supplied with such a terminating resistor which has to be taken into
consideration accordingly.
Shielded
cables with exactly two
twisted
pairs must be used for cabling.
Use a twisted pair to connect CAN-H and CAN-L.
The cores of the other pair are used
jointly
for CAN-GND.
The shield of the cable is led to the CAN shield connections for all nodes.
For suitable cables and cables recommended by Metronix please refer to
chapter 8.13.4 Cable
type and configuration [X4]
.
We advise against the use of plug adapters for cabling the CAN bus. Should this be necessary
nonetheless, make sure to use metal connector housings to connect the cable shield.
In order to keep interferences as low as possible, make sure that
motor cables are not laid parallel to signal lines.
motor cables comply with Metronix specifications.
motor cables are properly shielded and grounded.
For further information on interference-free CAN bus cabling, please refer to the Controller Area
Network protocol specification, version 2.0, by Robert Bosch GmbH, 1991.
Содержание ARS 2320
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