Rockwell Automation 1769-BOOLEAN Compact I/O Module Reference Manual - Manual (Page 34)

Publication 1769-RM016A-EN-P - July 2006
34 Installation and Wiring
DIN Rail Mount
The module can be mounted using the following DIN rails:
35 x 7.5 mm (EN 50 022 - 35 x 7.5) or 35 x 15 mm (EN 50 022 - 35 x 15).
Before mounting the module on a DIN rail, close the DIN rail latches. Press
the DIN rail mounting area of the module against the DIN rail. The latches
will momentarily open and lock into place.
Replace a Single Module
Within a System The module can be replaced while the system is mounted to a panel (or DIN
rail). Follow these steps in order.
1. Remove power.
2. Remove the upper and lower mounting screws from the module to be
removed (or open the DIN latches using a flat-blade or Phillips
screwdriver).
3. Move the bus lever to the right to disconnect (unlock) the bus.
4. Move the right-side adjacent module's bus lever to the right (unlock) 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 opened).
ATTENTION
Remove power before removing or inserting this module. When
you remove or insert a module with power applied, an electrical
arc may occur. An electrical arc can cause personal injury or
property damage by:
• sending an erroneous signal to your system’s field devices,
causing unintended machine motion.
• causing an explosion in a hazardous environment.
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector and may lead to premature
failure.
TIP
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.