Using an AGS Module: Setup
©
2017 Sensata Technologies
Page 87
How does the Gen Run Temp feature work?
When the temperature around the remote
temperature sensor (based on the
METER: 04D AGS Temp
display) increases to the
Gen Run
Start Temp
setting, the generator immediately starts and runs based on the
Gen Temp Run Time
setting. When this run time period is
fi
nished, the temperature sensor reading is checked. If the
temperature sensor (or thermostat control if using optional pigtail adapter) reading is below the
Start Temp
setting, the generator autostops. If the temperature sensor (or thermostat control)
reading is above the
Start Temp
setting, the generator continues to run for a another run time
period. At the end of this run time period, the temperature sensor reading (or thermostat control)
is checked again. If the temperature sensor reading is still above the
Start Temp
setting, the
generator continues to run as long as the
CTRL: 03 Gen Control
menu is set to
AUTO
and the
SETUP: 04F Max Gen Run Time
setting has not been reached.
Why would I use Gen Run Temp?
Typically, in a mobile application such as in an RV or on
a boat where the air conditioning (A/C) unit is too much power for the inverter to run from the
batteries, this feature is used to start a generator to run the A/C unit. Many RV and marine
customers travel with pets and they do not want to leave the pets inside on a hot day. With this
feature, you could set the A/C unit to turn on and leave. Whenever the inside temperature rises to
the start setting, the AGS commands the generator to autostart; which provides power to the A/C
unit so that it can now run and cool the pet area. This would keep the area cool and comfortable—
plus, while the generator is on, the inverter batteries are being charged.
Should I use the Remote Temperature Sensor or the External Input?
If your A/C unit
provides a thermostat connection or you want to set up an external relay control circuit, then
the external input (
ExtInput
) selection works for you. When using the external input setting, you
must connect an optional AGS pigtail adapter (ME-PT1 or ME-PT2) to the AGS’s REMOTE port.
When the pigtail adapter recognizes an external command, the AGS begins a generator autostart
sequence.
Info:
The ME-PT1 requires a +12-volt to common ground input, and the ME-PT2
requires a two-terminal dry contact input.
Without any connection to an external control circuit, the remote temperature sensor cable must
be used. This cable is provided with the AGS and is 60’ in length with the sensor wired to the end
and covered with heat shrink. The sensor must be placed in the location that is required to be
monitored for temperature and the
Gen Run Temp Start
setting must be set.
Where should I set Gen Run Temp Start?
If you are using this feature to power an A/C
unit, the
Start Temp
setting should be slightly above the temperature setting of the thermostat
controlling the air conditioner unit—to ensure the A/C unit runs once the generator starts. Once
the
Start Temp
setting is reached, the generator starts providing power to the A/C unit.
If the
Start Temp
setting is below that of the A/C unit’s thermostat setting, the generator could
be commanded to autostart; but because the thermostat has not reached its start temperature,
the A/C unit wouldn’t have turned on yet. In other words, your generator would be running, but
the A/C unit would not be running—resulting in wasted fuel and the area not being cooled down.
Info:
If using the temperature autostart feature to start a generator that is powering
two air conditioners, it is suggested that the second air conditioner’s thermostat be
set 2° to 5° higher than the
fi
rst air conditioner. This staggered setting allows the
fi
rst
air conditioner to start and run in an effort to keep the coach cool. If the temperature
continues to rise inside the coach, the second air conditioner would then turn on.
How long should I set the Gen Run Temp Time?
When using the remote temperature sensor
cable and setting the
Gen Run Temp Start
temperature, the
Run Time
setting must be set. When
the temperature rises to the
Start Temp
setting, the generator autostarts and runs until either
the
Run Time
setting or the
SETUP: 04F Max Gen Run Time
when Autostarted
setting is reached,
whichever occurs
fi
rst. At the end of the
Run Time
setting, the temperature around the sensor is
checked. If the temperature is still above the
Temp Start
setting, the generator continues to run
for another
Run Time
setting. This means you could set the time to the lowest time setting (
0.5
Hrs
), knowing the generator attempts to run until the temperature setting is met.
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