Eaton ATC-900 - Page 7

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Instructional Booklet
Effective: March 2021 Page 7
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
Figure 1 . ATC-9 0 0 Operator Panel.
1. ATC-900 Faceplate (UV resistant)
2. Operational Mode LEDs (highlighting ATC-900’s pres-
ent operational condition)
3. System Status Mimic Bus (easy-to-read and under-
stand LED type)
4. Color Display Window (easy-to-read monitored param-
eters, setpoints, and messages)
5. Bypass Timer (used simultaneously to bypass timers
such as TDNE, TDEN, and TDEC)
6. Help Pushbutton (provides help information in any
operational mode)
7. Arrow Pushbuttons (used individually, pushbuttons
move through displayed information and adjust set-
tings up or down through all possibilities)
8. Lamp Test (test all LEDs on the mimic bus #3)
9. Enter Pushbutton (used to enable the screen selec-
tions)
10. Engine Test Pushbutton (used to start/stop a self-test)
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