10 Issue
Number:
2
3.2 DeviceNet
Connections
To connect the Commander SE to the DeviceNet network, make the
connections as shown in the diagram below. The length of the "pigtail"
shield connection should be kept as short as possible.
CAN-L
CAN-H
0V
+24V
Shield
1 2 3 4 5
0V
+24V
CAN-L
CAN-H
3.3 DeviceNet
Cable
DeviceNet networks (like most fieldbus systems) run at high data rates,
and consequently require cable specifically designed to carry high
frequency signals. Low quality cable may attenuate the signals, and
thus render the signal unreadable for the other nodes on the network.
Details of approved cables types and their manufacturers can be found
on the Open DeviceNet Vendors Association web site at
“www.odva.org”.
NOTE
The Open DeviceNet Vendors Association and Control Techniques
can only guarantee correct and reliable operation of a DeviceNet
network if all components (including the network cable) installed have
full Product Conformance Certification from the ODVA.
3.4
DeviceNet Cable Screen Connections
The Unidrive DeviceNet interface should be wired with the cable shields
isolated from earth at each Drive. The cable shields should be linked
together at the point where they emerge from the cable, and formed into
a short pigtail to be connected to pin 3 on the DeviceNet connector.
(See section 3.2)
