Magnum Energy ME-RTR Router - Manual (Page 36)

©
2014 Magnum Energy, Inc. Page 28
Setup
Where should I set AC In – Volts DC? Check with your battery manufacturer to determine the
correct settings for your batteries. Typically, battery manufacturers do not recommend discharging
the batteries below 50%, which when related to a voltage setting is approximately 12.0-12.2
VDC, 24.0-24.4 VDC and 48-48.8 VDC for 12, 24 and 48-volt batteries, respectively. In order to
protect the batteries from over-discharging, set the connect voltage setting to 12.2 VDC, 24.4
VDC, or 48.8 VDC, respectively.
Set the disconnect voltage setting higher than the absorb voltage setting in order to reduce cycling
of the system. A setting higher than the absorb voltage requires the energy source (e.g., solar,
wind, etc.,) to raise the DC voltage above the charger settings. This ensures the battery gets at
least an 80-85% charge (preferably 100%) before the AC is disconnected and the inverter resumes
powering from the batteries.
• 02E AC In – SOC: This setting determines when the inverter automatically connects and
disconnects the incoming utility power based on the SOC of the inverter battery bank.
Note: Requires a ME-BMK battery monitor to provide SOC values to the inverter.
◊ Connect
– This setting determines at what battery SOC% the inverter connects to incoming
utility power and transfers the loads from the inverter battery power to the utility grid.
Default setting: 80% SOC
Range: 20-99%
◊ Disconnect – Once the inverter has connected to the incoming AC—based on the SOC
Connect setting—this setting determines the battery SOC% at which the inverter disconnects
from incoming utility power and resumes powering the loads from the inverter’s battery power.
Default setting: 100% SOC
Range: 21-100%
Info: The transfer to/from incoming AC occurs immediately when the Connect SOC or
Disconnect SOC setting is reached.
Info: A ME-BMK is required in order to use the 2E AC In – SOC setting. If this setting is
selected and there is no ME-BMK installed in the system, or if a valid SOC number is not
displayed under the METER/05 BMK Meters/05A SOC menu (i.e., Think’n, No Comm,
Pwr-up Fault and Factory Fault are not valid SOC numbers), then the inverter will not
connect to the incoming AC power.
What is the AC In – SOC feature? This feature allows the inverter system to automatically
switch between utility connected and standalone battery operation based on the inverter’s battery
SOC that is provided by the ME-BMK battery monitor. When using this feature, the inverter loads
are normally powered from the battery and a solar array (or other energy source such as wind,
and/or hydro). In the event the solar array cannot deliver enough power and the battery’s SOC
drops to the Connect SOC setting, the inverter connects to the utility to continue powering the
loads connected to the inverter’s output and to charge the battery. Once the solar array can
again deliver enough power to charge the battery to the Disconnect SOC setting, the inverter
disconnects from the utility and again powers the inverter loads from the battery.
Where should I set AC In – SOC? Check with your battery manufacturer to determine the correct
settings for your batteries. For the Connect SOC setting, most manufacturers do not recommend
discharging the batteries below 50% to maintain the life of the battery. For the Disconnect SOC
setting, set it to a value to get at least an 80-85% charge (preferably 100%) before the AC is
disconnected and the inverter resumes powering from the batteries.
Info: When using AC In – SOC, ensure the SETUP: 03D Absorb Done SOC setting is
higher than the Disconnect SOC setting, or the inverter may not disconnect from the
incoming AC because the battery may not be charged to a high enough SOC level to
meet the Disconnect SOC setting.