IB140024EN
For more information visit: www.eaton.com
Instruction Booklet
Effective: October 2014
Page
31
ATC-300/900 40-400A (480/600Vac)
3-Postion Contactor Based Transfer Switch
Section 11: ATC-900 Controlled ATS
Quick Start Instructions
The ATC-900 is fully programmable from the device’s faceplate
or through the communications port. Users can reprogram set-
points as well as other parameters. Up to four optional I/O mod-
ules, each having four in and four out programmble I/Os can be
used with the ATC-900. That is a total of 20 Input and Outputs
that can be user programmed. Some inputs will require controller
setpoints to be set to a certain configuration.
To enter the program mode, the keyboard under the color display
is used (the color display is not a touch screen) Using the left/
right arrow keys, navigate to the desired screen icon and press
the Enter key. The "Change Setpoints" screen will require a pass-
word to access (factory default is 0900).
Eaton’s ATC-900 brings intelligence, adaptability, supervisory
and programming capabilities to automatic transfer switch equip-
ment. The smartEST
TM
(smart Eaton Switch Technology) brings
a new standard in Automatic Transfer Switches. Extreme reliabil-
ity makes the ATC-900 ideal for mission critical applications in
healthcare, wastewater, data center and other industries. Typi-
cally used for utility-to-utility, utility-to-generator, generator-to-
generator and three source transfer systems, the ATC-900 can
address virtually any system requirements. With this said, the
user should refer to the ATC-900's instruction booklet for pro-
gramming.