TP-6487 8/0716 Section 2 Operation
Note: Resetting the controller clears the exerciser
setting. Set the exercise time and day as
described in Section 2.8 after resetting the
controller.
2.7 Running a Test
Follow the instructions below to start and stop a loaded
or unloaded test. Once started, a test sequence will
continue to run until ended by the operator as described
in the procedures below.
If the standby source fails during a test run and the
normal source is available, the load is transferred back
to the Normal source and the test function is
deactivated. The standby source available LED stops
flashing when the standby source is no longer available.
See Figure 2-1 for the location of the Test button.
2.7.1 Unloaded Test
During an unloaded test, the generator set starts and
runs, but the electrical load is not transferred to the
standby source.
To start an unloaded test:
D Press and hold the Test button for 3 seconds. The
standby source available LED flashes.
D After the engine start time delay, the generator set
starts. (The load is not transferred.)
D The Generator Available LED flashes at 1 Hz.
To end the test:
D Press and hold the test button for 2 seconds.
D The generator set stops.
D The Generator Available LED stops flashing when
the standby source is no longer available.
2.7.2 Loaded Test
During a loaded test, the generator set starts and runs.
The ATS transfers the electrical load from the normal
source to the standby source. At the signal to end the
test, the ATS transfers the load back to the normal
source before signalling the generator set to stop.
Note: If the optional load shed kit is installed, the loads
connected to the remote-controlled circuit
breakers will be turned off during a loaded test.
To start a loaded test:
D Press and hold the Test button for 6 seconds, until the
standby source available and standby position LEDs
flash.
D After the engine start time delay, the generator starts.
The Generator Available LED flashes at 1 Hz.
D The load control contact opens.
D The optional load shed circuit breakers open.
D After the normal-to-standby time delay, the ATS
transfers the load to the standby source.
To end the test:
D Press and hold the test button for 2 seconds.
D After the standby-to-normal time delay, the ATS
transfers the load back to the normal source.
D The load control contact closes.
D The optional load shed circuit breakers close.
D After the engine cooldown time delay, the generator
set stops.
D The Generator Available LED stops flashing when
the standby source is no longer available.
2.8 Exerciser
Follow the instructions below to set the exercise timer to
automatically start and run the generator set for
20 minutes every week. The exerciser can be set for
loaded or unloaded exercise runs. The factory settings
fortheexerciseraresummarizedinFigure2-7.
Exerciser
Parameter Setting
Frequency * Weekly
Duration * 20 minutes
Type Unloaded: Hold Exercise button for 3--5
seconds
Loaded: Hold Exercise button for 6+
seconds
* The time delay option board allows adjustment of these
parameters.
Figure 2-7 Exerciser Settings
The time delay option board allows setting the exerciser
for biweekly exercise runs and adjustment of the
exercise run duration from 5 to 50 minutes. See
Section 4.1.
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