22
ProcessLogix and ControlLogix System Redundancy Module
Publication
1757-IN092E-EN-P - November 2007
Install or Remove the Module Under Power
You can install or remove this module while chassis power is applied.
Resetting the 1757-SRM Module
There are two ways that you can reset the module.
•
If you can cycle power to the chassis without losing control of your
process, then cycle power to the chassis.
•
If you would lose control of the process by removing power to the
chassis, then do not cycle power the chassis. The module can be
removed from the chassis and reinserted.
WARNING
When you insert or remove the module while backplane power is on,
an electrical arc can occur. This could cause an explosion in hazardous
location installations. Be sure that power is removed or the area is
nonhazardous before proceeding. Repeated electrical arcing causes
excessive wear to contacts on both the module and its mating
connector. Worn contacts may create electrical resistance that can
affect module operation.
