2-1
Copyright 2017 Cummins Inc.
2. Control Operation
GENERAL
The following describes the function and operation
of the PowerCommand
generator set control. All in-
dicators, displays, meters and control switches are
located on the face of the control panel as illustrated
in Figure 2-1.
Normally, generator set configuration options are
set at the factory. When a new control is installed on
a generator set or when parts are replaced, the con-
trol must be configured for that generator set with
the use of the “Initial Start Setup” portion of the inter-
nal software. Setup and calibration procedures are
described in Section 5.
The automatic voltage regulator (AVR) and gover-
nor operation characteristic adjustments are also
described in Section 5.
SAFETY CONSIDERATIONS
AC power is present when the set is running. Do not
open the alternator output box while the set is run-
ning.
WARNING
Contacting high voltage compo-
nents can cause electrocution, resulting in se-
vere personal injury or death. Do not open the
alternator output box while the set is running.
Read and observe all WARNINGS and CAU-
TIONS in your generator set manuals.
The PCC control cabinet must be opened only by
technically qualified personnel.
CAUTION
The PCC control cabinet must be
opened only by technically qualified personnel.
Lower level voltages (18 VAC to 24 VDC) are
present in PCC control cabinet. These voltages
can cause electrical shock, resulting in person-
al injury.
Even with power removed, improper handling
of components can cause electrostatic dis-
charge and damage to circuit components.
PCC POWER ON/STANDBY MODE
Standby Mode
In the Standby (sleep) mode (selector switch S5 on
the Digital Board is set to the right and the generator
set is not running), the control’s operating software
is inactive and the LEDs and displays on front panel
are all off.
The operating software is initialized and the front
panel is turned on in response to a run signal or any
one of eight “wake up” inputs from remote sensing
switches.
The wake up signals are:
Emergency Stop
Low Coolant Level
Low Coolant Temperature
Low Fuel
Customer Fault Inputs 2 and 3
Run Selected on Run/Off/Auto Switch
Remote Start Signal in Auto Mode
Self Test switch
To activate and view the menu displays, press and
release the Self Test switch. The PCC will initialize
the operating software and permit operation of the
menu display panel. If no menu selections are
made, the power to the control panel will shut down
after 30 seconds.
Power On Mode
In the Power On (awake) mode (selector switch S5
on the Digital Board is set to the left), the PCC will
initialize the operating software and permit opera-
tion of the menu display panel. (Refer to Figure 3-1
for S5 location.) Power will stay on until switch (S5)
is set to the Standby mode. It is recommended that
switch S5 be left in the Power On mode in all ap-
plication, except those where auxiliary battery
charging is not available.
CAUTION
Electrostatic discharge will damage
circuit boards. Always wear a grounding wrist
strap when touching or handling circuit boards
or socket-mounted ICs and when disconnect-
ing or connecting harness connectors.
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