Instructional Booklet
Page
12
Effective: March 2010
O&M Manual for the Eaton ATC-100
Automatic Transfer Switch Controller
For more information visit: www.eaton.com
IB01602019E
3.4 Test Modes
There are three test modes:
1. Engine Start – a no load generator test;
2. System Test – a generator test with load transfer; and
3. Generator Test – a programmed generator test with or
without load transfer.
3.4.1 Engine Start
The Engine Start test is intended to start and run the engine/gen-
erator under no-load conditions. The load remains connected to
the utility source for this test.
The Engine Start test is initiated by pressing and holding the
Engine Start pushbutton for a period of five seconds. The test will
run for 15 minutes and then terminate.
If the generator source does not become available within 90 sec-
onds of the ATC-100 providing the generator start command, the
Engine Start test will abort and the Generator Available LED will
blink. This alarm condition can be reset by pressing the Reset
pushbutton on the rear of the unit.
The Engine Start test may be aborted in the following ways:
1. Press the Engine Start pushbutton;
2. If the generator source does not become available within
90 seconds of the ATC-100 providing the generator start
command; and
3. If the utility source becomes unavailable.
3.4.2 System Test
Pressing the Engine Start and Set Generator Test pushbuttons
simultaneously will initiate a System Test. The System Test will
start the generator, time out TDNE, transfer the load to generator
source, run on generator for a run time of 15 minutes, time out
TDEN for five minutes, then retransfer, run the engine cool down
cycle, and then terminate.
If the generator source does not become available within 90 sec-
onds of the ATC-100 providing the generator start command, the
Engine Start test will abort and the Generator Available LED will
blink. This alarm condition can be reset by pressing the Reset
pushbutton on the rear of the unit.
All operations are “failsafe”, that is they prevent disconnection
from the only available power source and also force a transfer or
re-transfer operation to the only available power source.
A System Test may be aborted in the following ways:
1. Simultaneously press the Engine Start and Set Generator Test
pushbuttons;
2. If the generator source does not become available within
90 seconds of the ATC-100 providing the generator start
command;
3. If, during the TDNE countdown, the generator source goes
unavailable more than three times (TDNE will restart each
time);
4. If the generator source is powering the load and it goes
unavailable for more than the TDEF setting of six seconds;
and
5. If the utility source becomes unavailable.
3.4.3 Generator Test
The Generator Test is a feature that provides an automatic test of
the generator. The Generator Test is initiated by pressing and
holding the Set Generator Test pushbutton for five seconds. The
Utility Available and Generator Available LED’s will blink twice,
indicating that the Generator Test is programmed. The test will
run with a 15-minute engine run time. The Generator Test will
then run again automatically every 7 days, every 14 days, or
every 28 days depending on the Generator Test jumper setting.
Two optional modes of generator testing are available which are
also based on the Generator Test jumper setting:
•
No-load Test – the generator starts and runs for 15 minutes
with no transfer and
•
Load Transfer Test – the load is transferred to the generator for
15 minutes.
Once the Generator Test is programmed, it may be deprogrammed
by pressing and holding the Set Generator Test pushbutton for
five seconds. The Utility Available and Generator Available LED’s
will blink four times. The Generator Test can also be disabled by
placing the Generator Test jumper in the “OFF” position.
Generator testing in the Load Transfer Test mode is “failsafe”. If
the generator fails during testing for any reason, the ATC-100 will
signal the transfer switch to return to the utility power source.
A Generator Test may be aborted in the following ways:
1. Press and hold the Set Generator Test pushbutton for 5 sec-
onds;
2. If the generator source does not become available within
90 seconds of the ATC-100 providing the generator start
command;
3. If, during the TDNE countdown, the generator source goes
unavailable more than three times (TDNE will restart each
time);
4. If the generator source is powering the load and it goes
unavailable for more than the TDEF setting of six seconds;
and
5. If the utility source becomes unavailable.
NOTICE
IF THE ATS IS UNABLE TO PROCESS A SYSTEM TEST REQUEST
DUE TO THE ATS STATUS, THE REQUEST IS IGNORED.
NOTICE
THE GENERATOR TEST FEATURE ALLOWS FOR AUTOMATIC PRO-
GRAMMING OF THE DESIRED TEST CYCLE ON A 7-DAY, 14-DAY,
OR 28-DAY BASIS. IF THE ATS IS UNABLE TO PROCESS A GENERA-
TOR TEST REQUEST DUE TO THE ATS STATUS, THE REQUEST IS
IGNORED.
