Rockwell Automation Allen-Bradley CENTERLINE 2500, Instruction Manual

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1 Publication 2500-IN001A-EN-P—May 2006
Chapter
9
Motor Control Center Options
DeviceNet Motor Control
Centers DeviceNet Cable System
If your CENTERLINE 2500 MCC is equipped with DeviceNet, terminating
resistors must be installed prior to commissioning. If your MCC consists of
more than one shipping block, DeviceNet splicing cables need to be installed
as columns are joined together.
Basic information is provided in the following sections. For additional
information, refer to publication 2500-TD002
x …, DeviceNet Motor Control
Centers (MCCs) .
Terminating Resistors
The DeviceNet network will operate correctly only when there are
exactly two terminating resistors, one at each end of the network trunk
line.
Terminating resistors are necessary at the ends of trunk lines to reduce
reflections of the communication signals on the network. Refer to Figure 9.1
and follow the steps below 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. (Figure 9.1)
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 leftmost column in the network. 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 rightmost column of the network. 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 9-2.)