Allen-Bradley 1734-SSI - Remove a Mounting Base

Rockwell Automation Publication 1734-UM007E-EN-P - October 2015 13
Install the Module Chapter 1
3. If an I/O module is installed, snap the RTB handle into place on the
module.
Remove a Mounting Base
To remove a mounting base, you must remove any installed module, and the
module installed in the base to the right. Remove the removable terminal block,
if wired.
1. Unlatch the RTB handle on the I/O module.
2. Pull on the RTB handle to remove the removable terminal block.
3. Press in on the module lock on the top of the module.
4. Pull up on the I/O module to remove from the base.
5. Remove the module to the right of the base you are removing. The
interlocking portion of the base sits under the adjacent module.
6. Use a small-bladed screwdriver to rotate the orange DIN-rail locking screw
on the mounting base to a vertical position. This releases the locking
mechanism.
7. Lift the mounting base straight up to remove.
WARNING: When you connect or disconnect the removable terminal block
(RTB) with field-side power applied, an electrical arc can occur. This could cause
an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
WARNING: When you insert or remove the module while backplane power is
on, an electrical arc can occur. This could cause an explosion in hazardous
location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
Repeated electrical arcing causes excessive wear to contacts on both the module
and its mating connector. Worn contacts may create electrical resistance that can
affect module operation.