Rockwell Automation 1756-SPESMNRMXT GuardLogix Controllers User Manual - Manuel (Page 45)

Rockwell Automation Publication 1756-UM020I-EN-P - August 2012 45
Install the Controller Chapter 2
1. Remove the key from the keyswitch.
2. Use your thumb to press down on the black release and pull the ESM away
from the controller.
IMPORTANT The next step depends on which of the following conditions applies to
your application:
• If you are removing the ESM from a powered 1756-L7xS(XT)
controller, go to step 2 .
• If you are removing the ESM from a 1756-L7xS(XT) controller that
is not powered, 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.
After the OK status indicator transitions to OFF, go to step 2 .
Logix 55xx
RUN FORCESD OK
Logix 55xx
RUN FORCESD OK