Rockwell Automation Publication 1769-IN088A-EN-P - February 2011 17
Install a 1769 Module Chapter 1
Replace a Module
To replace the module while the system is mounted to a panel or DIN rail, follow
these steps.
1. Remove power.
2. On the module to be removed, use a screwdriver to remove the upper and
lower mounting screws from the module or open the DIN latches.
3. Move the bus lever to the right to disconnect or unlock the bus.
4. On the right-side adjacent module, move its bus lever to the right to
disconnect it from the module to be removed.
5. Gently slide the disconnected module forward.
If you feel excessive resistance, check that the module has been
disconnected from the bus, and that both mounting screws have been
removed or DIN latches have been opened.
6. Before installing the replacement module, be sure that the bus lever on the
module to be installed and the bus lever on the right-side adjacent module
are in the unlocked (fully right) position.
7. Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus levers on the
replacement module and the right-side adjacent module.
9. Replace the mounting screws or snap the module onto the DIN rail.
Ground the Module
This product is intended to be mounted to a well-grounded mounting surface,
such as a metal panel. Additional grounding connections from the module’s
mounting tabs or DIN rail are not required unless the mounting surface cannot
be grounded. Refer to the Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
, for additional information.
It may be necessary to rock the module slightly from front to back to
remove it, or, in a panel-mounted system, to loosen the screws of
adjacent modules.
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