Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual - Manual (Page 62)

62 Rockwell Automation Publication 1756-UM535D-EN-P - November 2012
Chapter 3 Install the Enhanced Redundancy System
Figure 13 - 1756-RM/A or RM/B and 1756-RMXT Modules
To install the redundancy module, follow these steps.
1. Align the circuit board with top and bottom guides in the chassis.
2. Slide the module into the chassis, making sure the module backplane
connector properly connects to the chassis backplane.
The module is properly installed when it is flush with other installed modules.
This completes the installation of the first chassis and its components. Chassis
power must remain off.
Redundancy Module
PRI COM OK
31941-M 44487
LC Single-
mode
Connector
1756-RM/A or 1756-RM/B Module 1756-RMXT Module
Front View
Backplane
Connector
Bottom View
Backplane
Connector
Front View
Top View Top View
Bottom View
Side View
Side View
Status Indicators
Status Indicators
LC Single-
mode
Connector
IMPORTANT To remove the module, push on the locking clips at the top and bottom of each
module and slide the module out of the chassis.
IMPORTANT If you are adding redundancy to an already operational ControlLogix system,
shut off your process to install the redundancy module. The first chassis you
install the redundancy module into and turn on, becomes the primary chassis.
You can also have to do the following:
• Use RSNetWorx software to configure keeper information in the secondary
ControlNet communication module if the master keeper for ControlNet
communication is in the primary chassis
• Enable redundancy in RSLogix 5000 software and remove any I/O modules
from the chassis