Magnum Energy AGS Network (ME-AGS-N) - Manual (Page 70)

© 2012 Magnum Energy, Inc. 64
10.0 Using the ME-RTR Router
where to set the Stop Gen Volts setting, it must be lower than the inverter’s
Absorb Voltage setting (determined by the SETUP: 03B Battery Type menu).
Otherwise, the charger will enter Absorption Charge mode — which is re-
quired to maintain the batteries at a constant voltage level — and the bat-
tery voltage will not reach the Stop Gen Volts setting, which will cause the
generator to run until it is out of fuel or until it reaches the SETUP: 04F Max
Gen Run Time setting.
Therefore, after reading this some will think that they should just set the
Stop Gen Volts setting slightly lower than the absorption level to ensure
the charger always reaches the Stop Gen Volts setting before it goes into
the Absorption Charge mode. However, temperature changes can affect the
absorb voltage setting¹ and may require you to readjust the Stop Gen Volts
setting seasonally. If you are in a normally cold climate (<32°F), the actual
absorb charge voltage will increase. So, the Stop Gen Volts setting should be
set well above the absorb voltage setting (~.5V above for 12-volt systems).
If you are normally in a hot climate (>95°F), the actual absorb charge volt-
age will decrease. In that case, the Stop Gen Volts setting should be set well
below the absorb voltage setting (~.5V below for 12-volt systems).
A simpler way to charge the batteries to 80-85% and to automatically allow
a temperature-compensated charge to the batteries (no seasonal adjust-
ment required) is accomplished using the settings below:
• Set
the Stop Gen Volts setting to Float
• Set the Absorb Volts setting (SETUP: 03B Battery Type) to the voltage
level at which you want the generator to turn off (normally ~ 14.5 volts
for fl ooded batteries in a 12-volt system)
• Set the Absorb Done Time setting (SETUP: 03E Absorb Done Time) to
0.1 hours (lowest setting)
Using these settings, when the batteries reach a low voltage level the gen-
erator turns on (per the Start Gen Volts setting) and charges the battery to
the temperature-compensated Absorb Voltage setting. After reaching the
absorption voltage level, the inverter/charger goes into Absorption Charge
mode and is there for only 6 minutes (0.1 hours) before it goes to Float
Charge mode. Once the inverter/charger enters Float Charge mode, the AGS
will autostop the generator.
Info: Battery life will be reduced if the batteries are only charged to
80-85% regularly. It is highly recommended to charge the batteries
to 100% as often as possible (~ once a week, or every other dis-
charge cycle) in order to avoid sulfation of the battery plates. Using
the SETUP: 03E Absorb Done Time menu, the absorption charge time
can easily be changed to a longer duration to increase the batteries’
state of charge.
• Set Stop Volts Delay – This setting determines the amount of time
the generator will run after the Set Stop Gen Volts setting has been
satisfi ed.
Default setting: Set Stop Volts Delay = 60 Seconds
Range: OFF, 1 - 120 Seconds, 3 - 127 Minutes
Note¹: When the inverter’s Battery Temperature Sensor (BTS) is connected,
the actual absorb charge voltage will increase or decrease to ensure correct
charging as the battery temperature changes.