Product Manual

TP-6804 2/21 27Section 2 Generator Set Operation
2.5.1 Setting the Exerciser
When power is applied to the RDC2 controller (that is,
when the battery is connected), you will be prompted to
set the date and time, and then to set the exerciser.
The first setting will flash. Press the Up and Down arrow
buttons to change the setting. Press Select to save the
setting and move on to the next. See Section 3.5 for
more detailed instructions to change settings on the
RDC2. See Section 3.6 for more detailed instructions to
set the exerciser or change the exercise settings.
2.5.2 Unloaded Cycle Exercise with
Complete System Diagnostics
An unloaded exercise runs the generator set without
signalling the transfer switch to transfer the electrical
load from the utility source to the generator set. The
Unloaded Cycle exercise with diagnostics is the
recommended exercise mode and is the default
exercise setting.
The Unloaded Cycle exercise runs the engine for 20
minutes in the cycle shown in Figure 2-3 and described
below.
 Runs at reduced speed for 10 minutes to warm up
and exercise the engine.
 Ramps up and runs at full speed for 3 minutes.
Engine diagnostics are performed during this
full-speed portion of the cycle, which provides the
best test of engine and alternator power backup
capability. Diagnostic tests at full speed can identify
potential problems with the power output and alert the
operator before an emergency event.
 Ramps down and runs at reduced speed for 5
minutes to cool down the engine before shutting down
automatically.
Engine Speed, RPM
Engine
Exercise
Full-Speed
Diagnostics
Cooldown
3 min.
1 min.
1 min.
10 min. 5 min.
Figure 2-3 Unloaded Exercise Cycle
System Diagnostics
During the unloaded exercise, the controller monitors
the following data. The controller display indicates that
the generator set is running, unless a fault is detected as
described below.
 ATS connection. The controller verifies that the
Model RXT ATS interface board is connected.
 Battery voltage. Battery voltage is checked before
exercise to verify engine starting capability. Battery
voltage provides a measurement of battery health. If
the controller detects low battery voltage, the
condition is indicated on the display.
 Communication integrity tests. J1939, RBUS,
Ethernet, and USB are monitored for messages
indicating that the controller and wiring are reliable.
 Engine speed. Engine speed is measured at
reduced speed and full speed. An overspeed or
underspeed condition will result in a fault condition
and shutdown.
 Generator output frequency and voltage.
Operating the generator at full speed allows the
RDC2 controller to check the output power for correct
voltage, frequency, and stability. When the engine is
running at full speed, the controller verifies that the
voltage and frequency are within acceptable limits. A
fault message is displayed if the voltage or frequency
is out of range.
 Oil pressure. Oil pressure is verified to ensure
proper lubrication of critical engine components.
Pressure is monitored at both reduced and full
speeds. If the oil pressure is low, the Low Oil Pressure
message is displayed and the generator set shuts
down.
Note: See Section 2.5.5 for information about
Advanced Diagnostic Active in the event history.
2.5.3 Unloaded Full-Speed Exercise
The unloaded full-speed exercise runs the generator set
at full speed for 20 minutes without transferring the load.
To set an unloaded full-speed exercise, follow the
procedure in Figure 3-8 and select Exercise Mode:
Unloaded Full.