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12 ControlLogix Voltage/Current Input Module
Assemble the Removable Terminal Block and the Housing
1. Align the grooves at the bottom of the housing with the side edges of the RTB.
Groove
Side edge of the RTB
2. Slide the RTB into the housing until it snaps into place.
Install the Removable Terminal Block onto the Module
WARNING
!
Publication 1756-IN040C-EN-P - October 2000
Groove
The RTB is designed to support Removal and Insertion
Under Power (RIUP). However, when you remove or
insert an RTB with field-side power applied, unintended
machine motion or loss of process control can
occur. Exercise extreme caution when using this feature.
It is recommended that field-side power be removed
before installing the RTB onto the module.
When you remove or insert a module while field-side
power is applied, you may cause an electrical arc. An
electrical arc can cause personal injury or property
damage because it may:
• send an erroneous signal to your system's field
devices, causing unintended machine motion or loss
of process control.
• cause an explosion in a hazardous environment.
Repeated electrical arcing causes excessive wear to
contacts on both the module and its mating connector.
Worn contacts may create electrical resistance.
When you insert or remove the module while backplane
power is on, or you connect or disconnect the 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
non-hazardous before proceeding.
Side edge of the RTB
Strain relief area
20858–M
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