Kohler Decision-Maker MPAC 750, Operation

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TP-6865 4/14 10 Section 1 Operation
1.3.2 LED Indicators
LEDs on the user interface indicate contactor position,
source availability, faults, and other conditions. The
table in Figure 1-2 describes the functions of the LED
indicators. Source N is connected to the normal side of
the ATS and is typically the utility source. Source E is
connected to the emergency side of the ATS and is
typically the generator set.
The Source E Available and Source E Position LEDs
also indicate test and exercise runs as described in
Figure 1-3. See Sections 1.4 and 1.6 for more
information.
See Section 1.7 for more information about warnings
and faults.
Some programmable inputs will trigger the LEDs to light
or flash. See Section 3.6.
LED Indicator Condition
Source N Available,
Green
Source N is available.
Source E Available, Red Source E is available.
Position N, Green Contactor is in Normal position.
Position E, Red Contactor is in Emergency position.
System Alert, Red Fault. Identify and correct the cause
of the fault condition, then reset faults
at the controller. See Section 1.7.
Input active: Low Battery Voltage or
Remote Common Alarm. See
Section 3.6.
Not in Auto, Red ATS is not set for automatic
operation.
Flashes for manual transfer waiting.
Inhibit Transfer input is active. See
Section 3.6.
Figure 1-2 User Interface LED Indicators
Condition
Source E
Available (RED)
Source E
Position (RED)
Unloaded Test Flash 1sec/1sec OFF
Loaded Test Flash 1sec/1sec Flash 1sec/1sec
Unloaded Exercise Flash 0.5 sec/2 sec OFF
Loaded Exercise Flash 0.5 sec/2 sec Flash 0.5 sec/2 sec
Figure 1-3 Test and Exercise Indication
1.4 Test
Use the Test button to:
D
Start and run the generator set (unloaded test).
D
Simulate a Source N failure, resulting in a transfer to
Source E (loaded test).
If the emergency source is lost during a system test, the
test is terminated. If the contactor is in the standby
position, it transfers immediately to the preferred
position.
For remote test information, also see Section 3.6.1.
1.4.1 Unloaded System Test
Press and hold the Test button for 3--5 seconds to start
an unloaded test. The generator set will start without
waiting for the engine start time delay. The load is not
transferred to the generator set. The generator runs
until the test is ended.
During an unloaded test, the Source E available LED
flashes, 1 second on and 1 second off.
Press and hold the Test pushbutton for about 2 seconds
to end the test. Time delays will execute as programmed
when the test is ended. The Source E available LED
lights during the time delays. The generator set shuts
down.
If the normal source fails during the test, the contactor
transfers to the emergency source. The ATS then
monitors the sources and operates automatically when
the normal source returns.
1.4.2 Loaded System Test
A loaded test simulates a failure of source N. Press and
hold the Test button for 6 seconds or longer to start a
loaded test. The generator set will start without waiting
for the engine start time delay. The ATS then transfers
the load to the generator set.
Since the loaded test transfer will be between two live
sources, the in-phase monitor feature will be activated if
it is enabled.
During a loaded test, the Source E available and Source
E position LEDs flash, 1 second on and 1 second off.