Spectrum Controls 1756sc-OF8H Series A User Manual
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Chapter 2: Installing And Wiring Your Module 11
!
WARNING
These modules are to be used only with the Allen-Bradley 1756 ControlLogix
System.
To insert your module into the rack, follow these steps:
1. Align the circuit board of your module with the card guides at the top
and bottom of the chassis.
Figure 2.1 (Module insertion into a rack)
2. Key the RTB in positions that correspond to unkeyed module
positions. Insert the wedge-shaped tab on the RTB with the rounded
edge first. Push the tab onto the RTB until it stops.
Keying the Removable Terminal Block
Key the RTB to prevent inadvertently connecting the incorrect RTB to
your module.
When the RTB mounts onto the module, keying positions will match up.
For example, if you place a U-shaped keying band in position #4 on the
module, you cannot place a wedge-shaped tab in #4 on the RTB or your
RTB will not mount on the module.
We recommend that you use a unique keying pattern for each slot in the
chassis.