IB01602019E
For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2010
Page
7
O&M Manual for the Eaton ATC-100
Automatic Transfer Switch Controller
2.2.1 The Output Function LED’s
Unit Status LED
The green Unit Status LED blinks at a rate of once per second
while the ATC-100 is operational. This indicates that the
ATC-100 has completed a self-diagnostic cycle. The self-diagnos-
tic cycle checks include the:
•
Microprocessor operation and
•
Memory operation.
Utility Available LED
The white Utility Available LED illuminates if the utility power
source meets the criteria to be considered “available”. That is,
when it is within its undervoltage ranges for the nominal voltage
setting.
Utility Connected LED
The green Utility Connected LED illuminates when the utility
switching device and its associated position indicating auxiliary
contacts are closed.
The Utility Connected LED will blink to indicate an alarm condition
for an unsuccessful transfer (see Section 5.2, ATC-100 Trouble-
shooting).
Generator Available
The amber Generator Available LED illuminates if the generator
power source meets the criteria to be considered “available”.
That is, when it is within its undervoltage/underfrequency/overfre-
quency (if applicable) ranges for the nominal voltage and fre-
quency setting.
The Generator Available LED will blink to indicate an alarm condi-
tion if the Generator did not become available within 90 seconds
for a System Test, Generator Test, or Engine Start Test, (see Sec-
tion 5.2, ATC-100 Troubleshooting).
Generator Connected LED
The red Generator Connected LED illuminates when the generator
switching device and its associated position indicating auxiliary
contacts are closed.
The Generator Connected LED will blink to indicate an alarm con-
dition for an unsuccessful transfer (see Section 5.2, ATC-100
Troubleshooting).
2.2.2 The Input Function Components
The Pushbuttons and Combinations
Engine Start Pushbutton
Pressing and holding the Engine Start pushbutton for a period of
five seconds will initiate a No Load Generator Test. The test will
run for 15 minutes and then terminate. If the Engine Start push-
button is pressed while the engine/generator is running, the test
will terminate.
Set Generator Test Pushbutton
The Set Generator Test pushbutton allows the user to test the
generator automatically on a periodic (every 7, 14, or 28 days)
basis. Pressing and holding the Set Generator Test pushbutton for
a period of five seconds will initiate a Generator Test. The Utility
Available and Generator Available LED’s will flash twice indicating
that the Generator Test is programmed.
The Generator Test can be deprogrammed by pressing and holding
the Set Generator Test pushbutton for a period of five seconds.
The Utility Available and Generator Available LED’s will flash four
times, indicating that the Generator Test is no longer programmed.
The Generator Test jumpers can be set to one of three positions to
allow flexibility in how the test is run:
•
No Load Generator Test;
•
Generator Test with Load Transfer; or
•
Disabled.
For complete information on the Generator Test function, see Sec-
tion 3.4.3.
System Test (Engine Start + Set Generator Test Pushbuttons)
Pressing the Engine Start and Set Generator Test pushbuttons simul-
taneously will initiate a System Test. The System Test
will start the
generator, transfer the load to generator, run on generator for a
run time of 15 minutes,
time out TDEN for five minutes, then retrans-
fer, run the engine cool down cycle, and then terminate. To abort the
System Test, simultaneously press the Engine Start and Set Genera-
tor Test pushbuttons.
2.3 Rear Access Area
The rear access area of the ATC-100 is normally accessible from
the rear of an open panel door (see Figure 2).
Figure 2. ATC-100 (Rear View).
All wiring connections to the ATC-100 are made at the rear of the
chassis.
Note:
To allow for uniform identification, the frame of reference when dis-
cussing the rear access area is with the panel door open and the User fac-
ing the back of the ATC-100.
Located at the left rear of the ATC-100 are connectors J1, J2,
and J7. J1 and J2 provide for voltage monitoring of the utility
and generator respectively. J7 is provided for utility and generator
control power input. The J4 and J5 connectors are located at the
bottom of the controller. The J4 connector provides connections
for the control inputs and dry relay contacts for primary control
outputs. The J5 connector provides the Generator Start dry relay
contacts for starting the generator (see Figures 3A and 3B).
See Section 2.5 for contact ratings.
