Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual - Manual (Page 84)

84 Rockwell Automation Publication 2500-IN001C-EN-P - April 2014
Chapter 9 IntelliCENTER Options
Terminating Resistors
Terminating resistors are necessary at the ends of trunk lines to reduce reflections
of the communication signals on the network.
Refer to Figure 29 for more information.
Follow these procedures to install terminating resistors.
1. Locate the terminating resistor kit.
Terminating resistor kits are shipped in the top horizontal wireway. A
removable white label indicates the location of the kit.
2. Remove the top horizontal wireway cover from each column in the
network.
3. Plug the first terminating resistor into the left port in the top horizontal
wireway of the left end column in the network and torque the connector
screws to 0.55 N•m.
4. Plug the second terminating resistor into the right port in the top
horizontal wireway of the right end column of the network and torque the
connector screws to 0.55 N•m.
5. Do not replace the horizontal wireway covers until all shipping blocks in
the network have been spliced together.
Refer to Joining DeviceNet Cables on page 86 .
IMPORTANT The DeviceNet network only operates correctly when there are exactly two
terminating resistors, one at each end of the network trunk line.