Specifications

IB01602019E For more information visit: www.eatonelectrical.com
Instructional Booklet
Effective: May 2006 Page 7
O&M Manual for the Eaton ATC-100
Automatic Transfer Switch Controller
Figure 3. Connectors and Jumpers on the ATC-100.
2.3.1 Programming Jumpers
The ATC-100 is programmable via the jumpers on the back of the
unit. The jumper selections are discussed in Section 5, Program-
ming.
2.3.2 Reset Pushbutton
The ATC-100 has a Reset pushbutton in the top right corner to
reset the following alarm conditions:
• “Utility Connected” LED is blinking;
• “Generator Connected” LED is blinking; and
• “Generator Available” LED is blinking.
See Section 5.2, ATC-100 Troubleshooting for further information
on these alarm conditions.
Note: Pressing the Reset pushbutton will also clear the Generator Test pro-
gramming. It will be necessary to set up the Generator Test again after
pressing the Reset pushbutton.
2.4 Control Inputs
The ATC-100 has two individual control input signals that are
used to sense transfer switch position. The inputs require and
external contact closure to the DC_Output pin (J4, Pin1). The
DC_Output pin is connected internally to the unregulated DC sup-
ply (26 V) and appropriate current-limiting to provide a nominal
current of 10 mA per channel.
2.4.1 Control Input Descriptions
The Control Input “State” definitions are as follows.
Connected - When the input is shorted by an external contact or
connection.
Unconnected - When the input is NOT shorted by an external con-
tact or connection.
The Control Input operations are defined as follows.
1
23
4
5
6
7
8
12
J4
J7
J2
J1
J5
Phase C
Phase B
Phase A
Utility
Phase C
Phase B
Phase A
Utility
Phase C
Phase B
Phase A
Generator
Phase C
Phase B
Phase A
Generator
Utility
Utility
Generator
Control
Power
Generator
K1 - (Com)
K1 - (NO)
DC_Output
Generator Closed
K2 – (Com)
K2 - (NO)
Earth Ground
Gen Start - (Com)
Gen Start - (NO)
Control Inputs
Utility Closed
Control Outputs
3
Gen Start - (NC)
Generator Start Contacts
Reset
120
208
220
230
240
380
415
480
Voltage
1φ
3φ
Phases
50 Hz
60 Hz
Frequency
2 sec
15 sec
TDNE
On
Off
Overfreq
Off
No Load
Load
Generator Test
7 day
14 day
28 day