Installation Manual

Page 64
© 2014 Magnum Energy, Inc.
Using an AGS Module: Setup
Info: The METER: 05B Battery SOC meter must have a valid SOC number for the Gen
Run SOC feature to determine when to start and stop based on the battery SOC. Under
the METER: 05B Battery SOC menu, Think’n, No Comm, or any BMK fault (i.e., Factory
Fault, Power-up Fault, or Unknown Fault ##) are not valid SOC numbers.
Info: When the Gen Run SOC feature is enabled and a generator SOC start is triggered,
the remote issues a one-time “Start Bulk” command to the inverter/charger. This
ensures—after the generator connects—that regardless of battery voltage, a Bulk/
Absorb charge cycle is started.
Where should I set Gen Run SOC? Most battery manufacturers recommend that for optimum
battery life, deep-cycle batteries should not be discharged below 50% SOC. The ME-BMK deter-
mines the battery’s SOC by using a DC shunt to measure the fl ow of current in and out of the
battery. Many refer to a SOC meter as a “fuel gauge” for your batteries, since this meter gives
you an accurate reading of how much capacity is remaining in the battery bank.
Set the Start Gen SOC level to 50%, or to 60% if you do not want to discharge the batteries quite
as much. When considering the Stop Gen SOC setting, keep in mind that running the generator
past 90% SOC delivers very little current to get that last 10% into the batteries. Thus, it is com-
mon to stop the generator at 90% to save fuel and run time on the generator. However, if the
Stop Gen SOC setting is less than 100%, the batteries should be charged to 100% as often as
possible (~ once per week, or every other discharge cycle) in order to avoid sulfation of the bat-
tery plates (see the SETUP: 04K Gen 100% SOC Start Days menu).
SETUP: 04E Gen Run Temp Menu
This menu allows you to automatically start the generator, either from an external temperature
sensor, or by receiving an external input command from an A/C thermostat—typically, to power
an A/C unit for cooling—based on an increase in temperature.
Note: This temperature autostart feature requires that the AGS’s remote temp sensor cable or
an optional ME-PT1 or ME-PT2 pigtail adapter be connected to the AGS’s REMOTE (purple) port.
Info: The optional ME-PT1 or ME-PT2 pigtail adapters can be used to connect an A/C or
relay control circuit. For more information, refer to the instruction sheet for each pigtail
adapter (PN: 64-0025 for ME-PT1 instructions, or PN: 64-0026 for ME-PT2 instructions).
• Set Gen Run Temp Start – This menu is used to enable and set the temperature that trig-
gers a generator autostart. If the temperature start feature is not needed, set to the OFF
position.
Default setting: OFF
Range: OFF, Ext Input, 65F - 95F (or 18C - 35C)
◊ Ext Input – This setting is used when an optional pigtail adapter (ME-PT1, or ME-PT2) is
used. When an AGS pigtail adapter is connected to the AGS’s REMOTE port, an external
command—either from a thermostat connection on an air conditioner control circuit or
an external relay control circuit—is recognized and causes the AGS to begin a generator
autostart sequence. Once the external command is no longer recognized, an autostop se-
quence is given and the generator stops after a minimum two-minute delay.
◊ 65F - 95F (18C - 35C) – These settings determine the rising temperature value that trig-
gers a generator temperature autostart.
□ Set Gen Run Temp Time – This menu sets the amount of time the generator runs
after a temperature autostart (when using the remote temp sensor).
Default setting: 2.0 Hrs
Range: 0.5-25.5 Hrs (0.5 hour increments)
Info: The Run Time in this menu uses the METER: 04C Gen Run Time menu’s displayed
value to determine the generator’s run time.