Filter
Top Products
TP-6843 1/13 Section 2 Generator Set Operation 19
Figure 2-3
Figure 2-3 Output Block
2.5 Exercise
The VSC controllers can be set to automatically run
the generator set at the same time and day each
week. Exercising the generator set weekly or every
two weeks is required to keep the engine and
alternator in good operating condition.
When power is applied to the VSC controller (that is,
when the battery is connected), you will be prompted
to set the date and time, and then to set the exerciser.
See Section 3.1, VSC Generator Set Controller, for
more information
An exercise can be started at any time using Kohler
®
OnCue
®
, or can start automatically according to the
exercise schedule programmed on the VSC controller.
Three exercise modes are available. During some
exercise modes the engine speed increases and
decreases. This is normal.
1. Unloaded Full Speed Exercise. The generator
regulates the output load below 5% of capacity.
The generator will stop after 20 minutes.
2. Unloaded Cycle Exercise. The generator set
engine speed varies during the 20-minute
exercise according to the following cycle:
a. The generator set regulates the output load
below 5% of capacity for 11 minutes to warm
up.
b. The output regulation is moved to the Genset
Maximum Percent Capacity for 3 minutes to
test ability to output power.
c. The load limit is returned to 5% for 6 minutes
to allow the generator to cool down before
stopping.
3. Loaded Full Speed Exercise. The generator
operates normally. Voltage is regulated to Voltage
Regulator Average Voltage Adjustment, and load
is regulated to Genset Maximum Percent
Capacity. The generator stops after 20 minutes,
regardless of the load on the generator.
2.6 Faults
The VSC controller displays fault messages for
generator set warnings and shutdowns. Selected fault
messages are shown in Figure 2-5.
2.6.1 Warnings
The controller displays a fault message but the
generator set does not shut down on a warning. The
controller resets automatically after a warning
condition is corrected.
2.6.2 Shutdowns
Under a fault shutdown condition, the generator set
shuts down automatically and the controller displays a
fault message. The OFF LED flashes. In some cases,
the engine cooldown cycle runs before the engine
shuts down. See Figure 2-5.
Shutdown switches (such as the low oil pressure
switch or high engine temperature switch) on the
generator set will automatically reset when the
problem is corrected. However, the fault condition at
the controller does not clear until the controller is reset.
The generator set cannot be restarted until the fault
condition is corrected and the controller is reset. See
Section 2.6.3 for instructions to reset the controller
after a fault shutdown.
1
2
KPS_043B
1. Positive (+)
2. Negative (–)