Magnum Energy Battery Monitor Kit ME-BMK - Manual (Page 32)

© 2010 Magnum Energy, Inc. 28
Using the ME-RTR Router with the BMK
04A BMK SOC – This menu selection offers read only displays that give the
current operating status of the battery monitor if there is a fault condition.
BM: Pwr-up Fault – The battery monitor faulted when it was powered-
up. The fault occurred because the power-up self-test failed. See the
Troubleshooting section.
BM: No Comm – The battery monitor is not communicating with the
router. This typically means a ME-BMK is not installed in the system. If
installed, view the Sense Module LED and use Table 6-1 to help deter-
mine the issue.
BM: Ready (will not display) – The battery monitor is connected and
actively monitoring the battery system. Router will display the battery’s
current state of charge (SOC).
The SOC display is the best way to monitor the actual state of the battery.
The read only display shows the state of charge for the connected battery
bank. The SOC represents the condition of the battery as a percentage of the
available capacity left in the battery. The range is 0% to 100%, where 100%
represents a fully charged battery and 0% means the battery is completely
discharged.
When the Sense Module is fi rst connected, the batteries will need to be fully
charged (i.e., SOC = 100%) at least once to establish a SOC reference point.
While this reference point is being calculated, the display will show “Think’n”,
to indicate that the SOC reference point is being calculated. After the batter-
ies are fully charged, the display will change from “Think’n” to “100%” and
begin to provide accurate SOC percentage values.
If the Sense Module is disconnected from power, this display resets to “Think’n”
and the batteries will require another full charge before this display begins
providing SOC percentage information.
Info: Try to limit battery discharging to 50% of capacity (keep
battery above 50% SOC). If batteries are allowed to be continually
discharged below 50% SOC, their effective service life will be con-
siderably shorter. This 50% rule has been determined to be the best
compromise between available energy and the maximum number of
discharge cycles a battery can provide.04B DC Volts-BMK – This
meter displays the real-time battery voltage from 07.00 to 70.00
volts (± 0.02 volts).
04C DC Amps-BMK – This meter displays the real-time charge current (amps
into the battery) or discharge current (amps out of the battery). Charging is
shown as a positive (+) number and discharging is shown as a negative (-)
number. The range is from ±0.1 to 999 amps, with a 1.0% accuracy.
04D AH In/Out – This meter displays the amp-hours returned to or
removed from the battery. When this value is positive, it represents amp-
hours returned to the battery during any subsequent charging. A nega-
tive value represents amp-hours removed from a full battery. The range is
±32,768 AH.
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