Instructional Booklet
Page
24
Effective: March 2021
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
For more information visit: www.eaton.com
IB140012EN
The I/O's are programmed similar to the setpoint programming.
The user may view the I/O's programmed by going into the View
Setpoints area or one can program the I/O, including the I/O Mod-
ule by going into the Change Setpoints Menu. Figure 12 shows
the Programmable Inputs screen. Figure 13 shows the Program-
mable Outputs screen. Programming an I/O module is done in the
same manner. Figure 14 shows the Module's final programming.
Be sure to press the enter key when you have completed each
input (or output). “Save” your choices for each Module before
changing screens, or your settings will be lost.
Figure 12. Setpoints Inputs
Figure 13. Setpoints Outputs
Figure 14. I/O-Module Display Example
When the I/O is "Fixed" the display will show the particular I/O in
the designated slot. The display will show a fixed I/O as black
instead of blue.
Table 8 shows the features and the I/O of the controller. There are
several more switch features and options not shown in Table 8.
See Appendix B for more information and definitions. This IB is
updated during the year but some features may not be shown
because of the time element of the IB getting published. Eaton is
constantly adding in more features to the ATC-900. As men-
tioned, the user will receive all software features except for the
optional closed transition.The "P" and "S" (programmable, stan-
dard) included in all ATC-900's.The difference is that the "P"
refers to the I/O programming. If the switch requires more I/O
than 4 in or 4 out, an I/O Module will be required. The right col-
umn shows the I/O required for that particular option.
The fixed I/O is required when a switch on the door may be used
to enable an option. An example would be a two position switch
on the front of the door to enable Load Shed.
