Rockwell Automation Publication ICSTT-RM447M-EN-P - July 2019 31
The AADvance Safety Controller Chapter 2
Module Locking Mechanism
Figure 3 - Locking Screw
Each module carries a locking mechanism, which secures the module onto its
base unit. The locking mechanism is in the form of a clamp screw, which can be
seen on the front panel of the module and engaged by a quarter turn of a flat
blade screwdriver. The module senses the locking mechanism position and
notifies the controller accordingly. This acts as an interlock device and helps
prevent the module from going on-line when it is not in the locked position.