42 Rockwell Automation Publication 1756-UM022D-EN-P - May 2017
Chapter 2 Install the Controller
Figure 5 - Operation Mode via the Logix Designer Application
Uninstall an Energy Storage
Module (ESM)
The controllers ship with an ESM installed.
Consider these points before removing the ESM:
• After the controller loses power, either because the chassis power is
turned off or the controller has been removed from a powered chassis,
do not remove the ESM immediately.
Wait until the controller’s OK status indicator transitions from Green to
Solid Red to OFF before you remove the ESM.
• Use the 1756-ESMNSE module if your application requires that the
installed ESM deplete its residual stored energy to 40 μJ or less before
transporting it into or out of your application.
• Once it is installed, you cannot remove the 1756-ESMNRM module
from the controller.
• The Armor™ controller energy storage modules (ESM) cannot be
removed or replaced.
TIP For this example, the controller key switch is set to Remote Mode. If your
controller key switch is set to Run Mode or Program Mode, the menu options
change.
Controller Installed ESM Cat. No.
1756-L7xS controller 1756-ESMCAP
1756-L7xSXT extreme temperature controller 1756-ESMCAPXT
1756-L7SP safety partner 1756-SPESMNSE
1756-L7SPXT extreme temperature safety partner 1756-SPESMNSEXT
IMPORTANT Before you remove an ESM, make necessary adjustments to your
program to account for potential changes to the WallClockTime attribute.
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