Operation Manual

Automatic Generator Start (AGS)
The Automatic Generator Start (AGS) allows the generator to start based upon the battery level.
The trigger voltage is configurable via a configuration parameter. The entire feature can be
enabled/disabled by a configuration parameter. The AGS feature is currently disabled, by default.
Safety Monitoring And Shutdown
The PCM monitors inputs for safety limitations which might damage the generator. If any input is
outside of the safe operating range, the generator is immediately shutdown and the PCM enters
the FAULT state. The PCM remains in the FAULT state until a power cycle or reset occurs. The
shutdown reason is displayed by blinking the LED.
The thresholds used in determining faults are set by configuration parameters.
These inputs are only monitored when the generator is in the RUNNING state. Before starting the
generator, the following inputs are checked to see whether a start should be attempted: High
Coolant Temperature, Auxiliary switch, Ignition Sense, DC Voltage and High Ambient
Temperatures.
These inputs are averaged over 0.6 seconds to help eliminate noise and settling issues. This
averaging helps to eliminate falsely signaled shutdowns.
Shutdown Reasons
Fault Reason Fault Code Description
Failure to Start 1
The generator was not able to start.
High Coolant
Temperature
2
The generator coolant temperature has reached a
high threshold.
Low Oil Pressure 3
The generator oil pressure has reached a critically
low pressure.
High Ambient (Air)
Temperature
4
The PCM measures an ambient air temperature
above a specific threshold.
NOTE: Temperature inside the Control Box.
AC Fault 5
A Fault with the AC was detected.
DC Fault 6
A Fault with the DC (Battery) was detected.
Auxiliary Input Active 7
The Auxiliary input is active.
Sensor Malfunction 8
One of the sensors has malfunctioned..
Ignition Sense 9
Ignition Sense is active.
The fault codes are displayed on the LED by blinking a number of times equal to the fault code,
then going dark for two seconds. Multiple fault codes are displayed in the order that they have
occurred. This cycle repeats until the fault is cleared by a power cycle, reset or via RV-C.
LED Sequences
The LED on the Start Button is used to communicate the state of the generator in addition to any
fault conditions. The PCM states are different from the Fault Codes in that the states are
displayed continuously (i.e. no two second pause).
PCM State
PCM State LED Notes
Idle State
off
Pre-Heat
Blink (25% duty cycle)
Cranking State
Blink (50% duty cycle)
Running State
on
Fault State
<various> See “Shutdown Reasons”
Section
4